高中情态动词练习及解析

高中情态动词练习及解析(一)
高中情态动词练习及答案

情态动词练习

1. It is usually warm in my hometown in March, but it ____ be rather cold sometimes.

A. must B. can C. should D. would

2. You ______ be hungry already ---- you had lunch only two hours ago!

A. wouldn’t B. can’t C. mustn’t D. needn’t

3. ---- What do you think we can do for our aged parents?

---- You ____ do anything except to be with them and be yourself.

A. don’t have to B. oughtn’t to C. mustn’t D. can’t

4. John promised his doctor he ______ not smoke. And he has never smoked ever since.

A. might B. should C. could D. would

5. What a pity! Considering his ability and experience, he ______ better.

A. need have done B. must have done C. can have done D. might have done

6. Liza ______ well not want to go on the trip ---- she hates traveling.

A. will B. can C. must D. may

7. She ______ have left school, for her bike is still here.

A. can’t B. wouldn’t C. shouldn’t D. needn’t

8. According to the air traffic rules, you _____ switch off your mobile phone before boarding.

A. may B. can C. would D. should

9. ---- I can’t find my purse anywhere.

---- You ______ have lost it while shopping.

A. may B. can C. should D. would

10. ---- I’m sorry. I _______ at you the other day.

---- Forget it. I was a bit out of control myself.

A. shouldn’t shout B. shouldn’t have shouted C. mustn’t shout D. mustn’t have shouted

11. ---- What sort of house do you want to have? Something big?

---- Well, it _______ be big ---- that’s not important.

A. mustn’t B. needn’t C. can’t D. won’t

12. ---- What does the sign over there read?

---- “No person _______ smoke or carry a lighted cigarette, cigar or pipe in this area.”

A. will B. may C. shall D. must

13. Some aspects of a pilot’s job ______ be bring; and pilots often _______ work at inconvenient.

A. can; have to B. may; can C. have to; may D. ought to; must

14. My MP4 player isn’t in my bag. Where _______ I have put it?

A. can B. must C. should D. would

15. The weather turned out to be fine yesterday, I _____ the trouble to carry my umbrella with me.

A. should have taken B. could have taken C. needn’t have taken D. mustn’t have taken ANSWERS：1—5 BBADD 6—10 DADAB 11—15 BCAAC

16. In crowded places like airports and railway stations, you ______ take care of your luggage.

A. can B. may C. must D. will

17. ---- She looks very happy. She ______ have passed the exam.

---- I guess so. It’s not difficult after all.

A. should B. could C. must D. might

18. I told your friend how to get to the hotel, but perhaps I _______ have driven her there.

A. could B. must C. might D. should

19. ---- Mr. Gordon asked me to remind you of the meeting this afternoon. Don’t forget it! ----OK, I _______.

A. won’t B. don’t C. can’t D. needn’t

20. ---- How is your tour around the North Lake? Is it beautiful?

---- It _______ be, but it is now heavily polluted.

A. will B. would C. should D. must

21. The biggest problem for most plants, which ______ just get up and run away when threatened,

is that animals like to eat them.

A. shan’t B. can’t C. needn’t D. mustn’t

22. ---- Where is my dictionary? I remember I put it here yesterday.

---- You _______ it in the wrong place.

A. must put B. should have put C. might put D. might have put

23. ---- What’s the name?

---- Khulaifi. ______ I spell that for you?

A. Shall B. Would C. Can D. Might

24. ---- Who is the girl standing over there ?

---- Well, if you ______ know, her name is Mabel.

A. may B. can C. must D. shall

25. I was really anxious about you. You _______ home without a word.

A. mustn’t have left B. shouldn’t have left C. couldn’t have left D. needn’t have left

26. My sister met him at the Grand Theatre yesterday afternoon, so he ______ have attended your

lecture.

A. couldn’t B. needn’t C. mustn’t D. shouldn’t

27. ---- Are you coming to Jeff’s party?

---- I’m not sur. I _______ go to the concert instead.

A. must B. would C. should D. might

28. Johnny, you ________ play with the knife. You ________ hurt yourself.

A. won’t; can’t B. mustn’t; may C. shouldn’t; must D. can’t; shouldn’t

29. You _______ pay too much attention to your reading skill, as it is so important.

A. shouldn’t B. cannot C. mustn’t D. needn’t

30. ---- Is John coming by train?

---- He should, but he ______ not. He likes driving his car.

A. must B. may C. can D. need

ANSWERS: 16—20 CCDAC 21—25 BDACB 26—30 ADBBB

31. ---- Will you stay for lunch?

---- Sorry, I _______. My brother is coming to see me.

A. mustn’t B. can’t C. needn’t D. won’t

32. Sir, you _______ be sitting in this waiting room. It is for women and children only.

A. oughtn’t to B. can’t C. won’t D. needn’t

33. It is raining very hard. We _________ stay here until the rain stops.

A. dare B. must C. have to D. are able to

34. It’s a fine day. Let’s go fishing, ________ ?

A. won’t we B. will you C. don’t you D. shall we

35. When he was there, he ______ go to that coffee shop at the corner after work every day.

A. would B. should C. might D. had better

36. My brother _____ come to your party tonight because he _____ prepare for tomorrow’s exam.

A. can’t; should B. mustn’t; can C. can’t; must D. mustn’t; had to

37. English is a language that many people around the world _____ not speak perfectly but _____ at least understand.

A. would; might B. will; must C. might; could D. can; may

38. ---- ________ I book a table for dinner a few days ahead of time?

---- Yes, you ________. The restaurant is always full, especially during the holidays.

A. Must; will B. Must; can C. Shall; shall D. Shall; must

39. ---- It _______ be Mary in the office.

---- I’m sure it _______ be her. I saw her off at the bus station just ten minutes ago.

A. must; shouldn’t B. should; can’t C. must; can’t D. can; mustn’t

40. Their answers are exactly the same ---- one of them ______ from the other.

A. must copy B. must have copied C. should copy D. should have copied

41. ---- _________ I tell John about it?

---- No, you needn’t. I have told him already.【高中情态动词练习及解析】

A. Shall B. Will C. Can D. May

42. ________ you please help me with my English?

A. Would B. Do C. Shall D. Can

43. ---- Must I start at once?

---- No, you ___________.

A. needn’t B. mustn’t C. can’t D. won’t

44. ---- Need I hand in my exercise book at once?

---- Yes, you __________

A. must B. need C. can D. will

45. ---- Could I borrow your dictionary?

---- Yes, of course you _______.

A. might B. will C. can D. should

ANSWERS: 31—35 BACDA 36—40 CCDCB 41—45 AAAAC

46. ---- Listen! Someone is knocking at the door. I ________ be Father.

---- It _______ be him; he is supposed to be back home tomorrow.

A. may; may B. must; can’t C. can; can’t D. could; must

47. Twenty minutes have passed; the bus _______ come at any moment.

A. shall B. should C. can D. must

48. She ________ have flown to Beijing last night, for I stayed with her all the time.

A. mustn’t B. may not C. shouldn’t D. can’t

49. You ______ the work better, but you didn’t try your best.

A. must have done B. will have done C. could have done D. can have done

50. The light is on. We _______ have forgotten to turn it off before we went out.

A. should B. must C. could D. might

51．May I stop my car here? No, you_＿＿＿.

A. can't B. mustn't C. needn't D. don't have to 52 Must we clean the house now? No, you _______.

A. needn't B. may not C. mustn't D. can't

53. John ________ his father about his failure in the exam.

A. dares not tell B. dares not telling

C. dare not tell D. dares not to tell

54. You________ return the book now. You can keep it next week if you like.

A. can't B. mustn't C. needn't D. may not

55. Johnny, you _______ play with the knife, you hurt yourself.

A. won't; can't B. mustn't; may C. shouldn't, must D. can't; shouldn't

56. The fire spread through the hotel very quickly but everyone ________ get out.

A. had to B. would C. could D. was able to

57. ---- Would you go out for a walk with me?

---- No, I______ . My girl friend is coming.

A. wouldn't B. shall not C. won't D. shouldn't

58. Man _______ die without water.

A. will B. can C. need D. shall

59. If he started at 9 0'clock, he _______ be there by now.

A. need B. shall C. ought to D. must

60. I mailed the letter two weeks ago. She _____ it.

A. must receive B. can't receive C. might receive D. must have received ANSWERS: 46—50 BBDCB 51----55 BACCB 56----60 DCADD

61.The professor gave orders that the experiment _______ before 5:30p.m.

A. be finished B. will finish

C. must be finished D. would be finished

62. There was plenty of time. You _____.

A. mustn't hurry B. mustn't have hurried

C. needn't hurry D. needn't have hurried

63. Tom was a diligent boy. He ________ go to school though it was raining hard.

A .was able to B. could C. couldn't D. wasn't able to

64. ______I go back before lunch? No, I don't think you________.

A. Need; must B. Do; need to C. Must; have to D. May; ought to

65. The teacher __________ do all the exercises, but a pupil _______.

A. needn't; must B. may not; must C. needn't; needn't D. can't; must

66. ---- Would you open the window please ?

---- Yes, I______.

A. will B. would C. do D. can

67. A lion _______ only attacks a human being when it is hungry.

A. should B. can C. will D. shall

68. ---- Must I finish this novel this morning ?

---- No, you_____.

A. mustn't B. might not C. don't have to D. can't

69. The taxi ____ only hold six passengers. It is full. You _______ take the next one.

A. may...may B. can...may C. may...can D. must...can

70. I _______ a little earlier, but I met a friend of mine on the way.

A. may come B. may have come C. could have come D. must have come

71. I wish to go home now, _______ I?

A. may B. can't C. must D. do

72. He must have finished his homework, __________ he?

A. mustn't B. didn't C. needn't D. hasn't

73. This pen looks like mine, yet it isn't. Whose _________ it be?

A. must B. can C. may D. might

74. He didn't do well in the exam. He ________ hard at his lessons.

A. must have worked B. ought to have worked

C. would have worked D. has worked

75. I wonder how he __________ that to the teacher.

A. dare to say B. dare saying C. not dare say D. dared say ANSWERS: 61----65 ADACA 66----70 ACCBC 71----75 ADBBD

76. Mr. Baker, a number of students want to see you. _____ they wait here or outside?

A. Should B. Will C. Shall D. Are

77. You __________ the trees. Look, it is raining now.

A. mustn't have watered B. needn't have watered

C. could have watered D. might have watered

78. I ________ give you an answer tomorrow. I promise!

A. must B. will C. may D. shall

79. As a soldier, you ________ do as the head tells you.

A. will B. shall C. may D. ought to

80. The streets are all dry. It _____ during the night.

A. can't have rained B. must have rained

C. couldn't rain D. shouldn't have rained

81.Mary was not in her bedroom yesterday afternoon. She ____ in her classroom.

A. should have been B. must have been C. must be D. should be

82. Eve was late for class again. She ____earlier.

A. should get up B. must get up C. need to get up D. should have got up

83. Walking alone in the deserted village, John was scared. He thought he ______ Tom to go with

him.

A. might have asked B. should asked

C. must have asked D. should have asked

84. When I got to the cinema, the film had already started; I____ there earlier.

A. ought to get B. ought to have got C. must have got D. must get

85. She can speak quite fluent English. She____.

高中情态动词练习及解析(二)
高一英语情态动词专题训练及答案

高一英语情态动词专题训练

概 说

助动词(auxiliary)主要有两类：基本助动词(primary auxiliary)和情态助动词(modal auxiliary)。基本助动词有三个：do, have和be；情态助动词有十三个：may, might; can, could; will, would; shall, should; must, need, dare, used to, ought to. 上述两类助动词的共同特征是，在协助主动词构成限定动词词组时，具有作用词的功能： 1） 构成否定式：

He didn’t go and neither did she.

The meeting might not start until 5 o‟clock. 2） 构成疑问式或附加疑问式：

Must you leave right now?

You have been learning French for 5 years, haven’t you? 3） 构成修辞倒装：

Nowhere can he obtain any information about his sister. Hardly had he arrived when she started complaining. 4） 代替限定动词词组：【高中情态动词练习及解析】

A: Who can solve this crossword puzzle? B: Tom can.

A: Shall I write to him? B: Yes, do.

情态助动词的特征

基本助动词与情态助动词最主要的区别之一是，基本助动词本身没有词义，而情态助动词则有自己的词义，能表示说话人对有关动作或状态的看法，或表示主观设想：

What have you been doing since? （构成完成进行体，本身无词义） I am afraid I must be going. （一定要）

You may have read some account of the matter. （或许已经） 除此之外，情态助动词还有如下词法和句法特征：

1） 除ought和used以外，其他情态动词后面只能接不带to的不定式。如果我们把ought to

和used to看做是固定词组的话，那么，所有情态动词无一例外地只能接不带to的不定式：

We used to grow beautiful roses.

I asked if he would come and repair my television set.

2） 情态助动词在限定动词词组总总是位居第一：

They need not have been punished so severely.

3） 情态助动词用于第三人称单数现在时的时候，没有词形变化，即其词尾无-s形式：

She dare not say what she thinks.

4） 情态动词没有非限定形式，即没有不定式、-ing分词和-ed分词形式：

Still, she needn’t have run away.

5） 情态助动词的“时”的形式并不是时间区别的主要标志。在不少场合，情态助动词的现

在时和过去时形式都可以表示现在、过去或将来时间：

Would you mind very much if I ask you to do something?

She told him he ought not to have done it.

6） 情态助动词之间是相互排斥的，即在一个限定动词词组中只能出现一个情态助动词，但

有时却可以与have和be基本助动词连用：

You should have washed the wound. Well, you shouldn’t be reading a novel.

情态助动词的意义和用法

情态助动词从最普通的意义上来说，是修饰分句意义的一种方式，它可以反映说话者对其表述是否真实和可能的程度作出判断。但不同的情态助动词本身所包含的意义和用法又不同，下面逐个分析。

1） can和could的用法

1． 表示能力或客观可能性，还可以表示请求和允许。如：

Can you finish this work tonight? Man cannot live without air.

— Can I go now? — Yes, you can.

注意：①could也可表示请求，预期委婉，主要用于疑问句，不可用于肯定句，答语应用can（即could不能用于现在时态的简略答语中）。如：

Could I come to see you tomorrow?

Yes, you can. （否定答语可用No, I‟m afraid not.） ②can表示能力时，还可用be able to代替。如： I‟ll not be able to come this afternoon. 2． 表示惊异、怀疑、不相信的态度。（主要用在否定句、疑问句或惊叹句中）

Can this be true?

How can you be so careless! This cannot be done by him.

3． “can(could) + have + 过去分词”的疑问或否定形式表示对过去发生的行为怀疑或

不肯定。如：

He cannot have been to that town. Can he have got the book?

2） may和might的用法

1． 表示许可。

表示请求、允许时，might比many的语气更委婉一些，否定回答时要用mustn‟t表示“不可以”、“禁止”、“阻止”之意。如： You may drive the car.

— Might I use your pen? — No, you mustn’t.

用May I ... 征询对方许可在文体上比较正式，在口气上比较客气。在日常口语中，用Can I ... 征询对方意见在现代口语中更为常见。 2． 用于祈使句中表示祝愿。如：

May you succeed!

3． 表示推测、可能（疑问句不能用于此意）。

He may be very busy now.

4． “may(might) + have + 过去分词”表示对过去发生的行为的推测。如：

He may not have finished the work.

3） must和have to的用法

1． 表示必须、必要。如：

You must come in time.

回答must引出的问句时，如果是否定的回答，不能用mustn‟t，而要用needn‟t或don‟t have to。

— Must we hand in our exercise books today? — Yes, you must. (No, you don‟t have to.)

2． “must be + 表语”的结构表示推测，它的否定或疑问式用can代替must。 This must be your pen.

3． “must + have + 过去分词”的结构常用在肯定句中，表示对过去发生的行为的推测。

它的否定或疑问式用can代替must。 He must have been to Shanghai. 4． have to的含义与must相似，两者往往可以互换使用，但have to有各种形式，随have

的变化而定。must与have to有下列几点不同：

① must表示的是说话人的主观看法，而have to则往往强调客观需要。如：

The play is not interesting. I really must go now. I had to work when I was your age.

② must一般只表现在，have则有更多的时态形式。 ③ 二者的否定意义不大相同。如：

You mustn’t go. 你可不要去。 You don’t have to go. 你不必去。 ④ 询问对方的意愿时应用must。如：

Must I clean all the room?

4） dare和need的用法

1． need表示“需要”或“必须”，作情态动词时，仅用于否定句或疑问句中，在肯定

句中一般用must, have to, ought to,或should代替。如： You needn’t come so early.

— Need I finish the work today? — Yes, you must.

注意：needn‟t + 不定式的完成式“表示本来不必做某事而实际上做了某事”。如： You needn’t have waited for me. 2． Dare作情态动词时，主要用于疑问句、否定句和条件从句中，一般不用在肯定句中。

如：

How dare you say I‟m unfair.

He daren’t speak English before such a crowd, dare he?

3． Dare和need常用作实义动词，有时态、人称和数的变化，所不同的是，作实义动

词时，在肯定句中，dare后面通常接带to的不定式，在否定和疑问句中，dare后面可接带to或不带to的不定式。如： I dare to swim across this river. He does not dare (to) answer. Don‟t you dare (to) touch it! I wondered he dare (to) say that. He needs to finish it this evening.

5） shall和should的用法

1． Shall用于第一人称，表示征求对方的意愿。如：

What shall we do this evening? 2． Shall用于第一、第三人称疑问句中，表示说话人征求对方的意见或向对方请示。如：

Shall we begin our lesson?

When shall he be able to leave the hospital?

3． Shall用于第二、第三人称，表示说话人给对方命令、警告、允诺或威胁。如：

You shall fail if you don‟t work harder. （警告）

He shall have the book when I finish reading. （允诺） He shall be punished. （威胁）

4． Should表示劝告、建议、命令，其同义词是ought to；在疑问句中，通常用should

代替ought to。如：

You should go to class right away. Should I open the window?

Should的含义较多，用法较活，现介绍三种其特殊用法。请看下面的句子： ① I should think it would be better to try it again. 我倒是认为最好再试一试。 ② You are mistaken, I should say. 依我看，你是搞错了。 ③ I should advise you not to do that. 我倒是劝你别这样做。

④ This is something I should have liked to ask you. 这是我本来想问你的。

从以上例句可以看出：情态动词should用于第一人称时可以表示说话人的一种谦逊、客气、委婉的语气。

Should还可以用在if引导的条件从句，表示一件事听起来可能性很小，但也不是完

全没有可能。相当于“万一”的意思。从句谓语由should加动词原形构成，主句谓语却不一定用虚拟语气。如：

⑤ Ask her to ring me up if you should see her. 你万一见到她，请让她给我打个电话。 ⑥ If you should change your mind, please let us know. 万一你改变主意，请通知我

们。

⑦ Should I (If I should) be free tomorrow I will come. 万一我明天有时间，我就来。 此外，Why(or How) + should结构表示说话人对某事不能理解，感到意外、惊异等意思。意为“竟会”。如：

⑧ Why should you be so late today? 你几天怎么来得这么晚？ ⑨ — Where is Betty living? — 贝蒂住在哪里？ — How should I know? — 我怎么会知道呢？

⑩ I don‟t know why you should think that I did it. 我真不知道你凭什么认为这件事

是我干的。

5． “should + have + 过去分词”结构一般表示义务，表示应该做到而实际上没有做到，

并包含一种埋怨、责备的口气。如： She should have finished it.

I should have helped her, but I never could. You should have started earlier.

6） will和would的用法

1． 表示请求、建议等，would比will委婉客气。如：

Would you pass me the book? 2． 表示意志、愿望和决心。如：

I will never do that again.

They asked if we would do that again.

3． 用“will be”和“will(would) + have + 过去分词”的结构表示推测，主要用于第二、

三人称。前者表示对目前情况的推测，后者表示对已经完成的动作或事态的推测。如：

This will be the book you want. He will have arrived by now.

The guests would have arrived by that time. I thought you would have finished this by now. 4． Would可表示过去反复发生的动作或某中倾向。Would表过去习惯时比used to正式，

并没有“现已无此习惯”的含义。如： The wound would not heal.

During the vacation he would visit me every week. 5． 表料想或猜想。如：

It would be about ten when he left home. What would she be doing there?

I thought he would have told you all about it.

7） ought to的用法

1． Ought to表示应该。如：

高中情态动词练习及解析(三)
高中情态动词讲解及练习

情态动词

情态动词表示说话人对某一动作或状态的态度，可以表示“可能”、“可以”、“需要”、“必须”或“应当”等之意。情态动词没有人称和数的变化。但不能单独作谓语动词用，必须和不带to的不定式连用构成谓语动词。只有情态动词ought要和带to的动词不定式连用，在句中作谓语用。

一． can/ be able to

can 表客观的能力，be able to表通过主观的努力，能够„„

eg. He is a native speaker of English, so he can speak English well.

The fire was big, but he was able to escape.

二．shall 用于二、三人称表命令，警告，威胁。宣布法律，法规时用shall. eg. The judge declared that all the money shall belong to the wife.

—What does the sign over there read?

—“No person smoke or carry a lighted cigarette，cigar or pipe in this

area.”

A.will B.may C.shall D.must

三．1. should 表推测时指确定或期望，即合乎理想的情况或结果。

It’s nearly seven o’clock. Jack should be here at any moment.

2. should 表“竟然”

How should he do like this?

四. 情态动词表推测。

1. must may might 用于肯定句，语气减弱。

can’t couldn’t 意为“不可能”，用于否定句，疑问句。

不存在mustn’t have done

eg. He must be at home.

He may go out .

He can’t be watching Tv.

He couldn’t have finished the job yesterday, for he was badly ill.

2. could have done 本可以„„（实际没有）

He could have been admitted to the college, but he failed.

五．1. may 表征求对方意见。

May I have a look at it ?

2． 表推测时may 表不确定。

eg. The train might leave at six, but I’m not sure.

3. may /might as well 不妨„„，不如„„

eg. It is dark and you may as well stay here .

Since the flight was cancelled， you might as well go by train.

六．情态动词+ have done

1. should (not) have done

ought (not) to have done 本应该做某事。

eg. You should have come here earlier.

You oughtn’t to have eaten too much.

2. must have done 表示对过去已经发生的行为进行推测，意为“一定做了某事” eg. It must have rained last night, for the road was quite muddy.

3.may / might have +过去分词，表示对已发生的事情做不肯定、可能性很小的推测，或事实上根本没发生，译为“也许……”。如：

4. couldn’t have done / can’t have done 表示对已发生情况的否定推测,“不可能做了某事”

eg.Time was limited, so he couldn’t have finished the task.

my letter; otherwise she would have replied before now.

[A] couldn’t have received [B] ought to have received

[C] has received [D] shouldn’t have received

5. needn’t have done “本没有必要做了某事”

eg. You needn’t have taken a taxi here, for it was near to your house.

needn’t do “没必要去做某事”

You needn’t go now.

As it turned out to be a small house party， so formally.

[A] needn’t dress up [B]did not need have dressed up

[C] did not need dress up [D] needn’t have dressed up

七．can’t be too can’t never be too

eg. You cannot be too careful when you drive a car.

八．It couldn’t be better. / It couln’t be worse. (交际用语)

How do you find the restaurant?

It couldn’t be better. / It couln’t be worse.

情态动词试题

1. Sorry I’m late. I ____have turned off the alarm clock and gone back to sleep again.

A. might B. should C. can D. will

2.----Write to me when you get home.

----________.

A. I must B.I should C. I will D.I can

3.I was really anxious about you . You ______home without a word.

A. mustn’t leave B. shouldn’t have left

C. couldn’t have left D. needn’t leave

4. --------I hear you’ve got a set of valuable coins. ______ I have a look?

-------- Yes, certainly.

A. Do B. May C. Shall D. Should

5. Oh, I’m not feeling well in the stomach . I_____ so much fried chicken just now.

A. shouldn’t eat B. mustn’t have eaten

C. shouldn’t have eaten D. mustn’t eat

6. -------I heard they went skiing in the mountains last winter.

-----It _______true because there was little snow there.

A. may not be B. won’t be C. couldn’t be D. mustn’t be

7. -------The room is so dirty ._____we clean it?

-------Of course.

A. Will B. Shall C. Would D. Do

8. My dictionary has disappeared. Who _____have taken it?

A. should B. must C. could D. would

9. I often see lights in that empty house. Do you think I ____ report it to the police ?

A. should B. may C. will D. can

10.Mr. White ______at 8:30 for the meeting , but he didn’t show up.

A. should have arrived B. should arrive

C. should have had arrived D. should be arriving

11.----Isn’t that Ann’s husband over there ?

-----No, it _____ be him. I’m sure he doesn’t wear glasses.

A. can’t B. must not C. won’t D. may not

12.------Tom graduated from college at a very young age.

----- oh, he _____ have been a very smart boy then.

A. could B. should C. might D. must

13.------- I don’t mind telling you what I know.

--------You _____. I’m not asking you for it.

A. mustn’t B. may not C. can’t D. needn’t

14. -----Who is the girl standing over there?

------- Well, if you _____know, her name is Mabel.

A. may B. can C. must D. shall

15.----I’ll tell Mary about her new job tomorrow.

-----You _____her last week.

A. ought to tell B. would have told

C. must tell D. should have told

16. （2008福建卷）It is usually warm in my hometown in March， but it _____ be rather cold sometime。

A. must B. can C. should D. would

17.（2008湖南卷）You don't have to know the name of the author to find a book. You _____ find the book by the title。

A. must B. need C. can D. would

18.（2008江苏卷）

—I'm sorry. I ______ at you the other day。

—Forget it. I was a bit out of control myself。

A. shouldn't shout B. shouldn't have shouted

C. mustn't shout C. mustn't have shouted

19（2008山东卷） Thank you for all your hard work last week. I don't think we ______ it without you。

A. can manage B. could have managed

高中情态动词练习及解析(四)
高考情态动词讲解及习题(附答案)

may 可以

will，would （表意愿） need 需要 dare 敢 must 必须 have to 不得不

shall，should 应该（表义务） ought to 应该

1.can，could 的用法

1.1表能力，有“能”、“会”、“能够”的意思 例如：Can you drive a car? 你会开车吗？ -----Yes, I can. 我会。 -----No, I can't. 我不会。

1.2表允许，在口语中代替 may，有“可以”的意思

例如：Can I use your bike? 我可以用你的自行车吗？ 1.3表示可能性，常用于否定句和疑问句 例如：Can it be true? 那会是真的吗？

Today is Sunday. He can't be at school. 今天是星期天。他不可能在学校里。

1.4过去式could表示的语气更加委婉、客气

例如：Could I come to see you tomorrow? 明天我可以来见你吗？

1.5 can 和 be able to 的比较

1) can 只有一般现在时和一般过去时两种时态(could)，其他时态要用be able to的形式

例如：I haven't been able to get in touch with her. 我一直没能和她联系上。

2) 通常can 和 be able to 可以互换

例如：He will come if he can.如果可能的话，他一定会来。 2.may，might的用法

2.1表示许可或征求对方的许可，有“可以”的意思。 例如：You may go now. 你可以走了。

May I use your computer? 我用一下你的电脑可以吗？ 2.2回答以may开头的疑问句有如下表达法： 例如：May I smoke here? 我可以在这儿抽烟吗？ -----Yes, you may. -----Yes, please. ------No, you can't. ------No, you mustn't. ------No, you'd better not.

2.3表示猜测，通常只用于陈述句

例如：You may be right. 你可能是对的。 2.4过去式might表示的语气更加委婉、客气

例如：Might I use your pen for a while? 我能用用你的钢笔吗？【高中情态动词练习及解析】

2.5在口语中can可以代替may表示许可，但can较随便，may更正式

例如：Can I use your bike, John? 约翰，我可以用一下你的自行车吗？

May I have a look at your license please, sir? 先生，我可以看一下你的执照吗 3.must 的用法 3.1表义务，“必须” 例如：You must talk to them about their study. 你必须同他们谈谈关于他们学习的事。

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例如：You must come and see us as soon as you get to Shanghai. 一到上海你就得马上来见我们。 3.4表推测，暗含有很大的可能性

例如：He must be ill. He looks so pale. 他肯定是病了。他的脸色那么苍白。 ［注意］

may 暗含的可能性较小，must 暗含的可能性较大。 3.5关于must的简短回答：

例如：Must I clean the dining room at once? 我必须马上打扫餐厅吗？

------Yes, you must. ------No, you needn't. ------No, you don't have to. 4.have to的用法

have to 虽属于情态动词，但它有人称、数的变化，它的疑问句否定句的构成也和其他情态动词有所不同。 4.1 have to表客观的需要和义务，must表主观认识

例如：I missed the train, so I had to take a taxi. 我没搭上火车，所以我只得打的。

4.2在疑问句和否定句中，have to多用助动词do构成，must则直接提前或加not。

例如：Did he have to do it? 他得做那件事吗？

―――He didn't have to do it. 他不需要做那件事。 4.3在否定句中，have to表示不需要，must表不允许。 例如：You don't have to go there. 你不需要去那儿。 You mustn't go there? 你不可去那儿。

4.4虽然must可以用在过去时态中，但是have to更能直接了当的表达过去时间概念。

例如：She must see Hubert that very night. 她必须在那个晚上见到休伯特。

I had to leave at six yesterday. 我得在昨天6点离开。 5.need 的用法

need既可用作情态动词，又可用作实义动词。作情态动词时，没有数和人称的变化，后接动词原形；作实义动词时，有数的变化和人称的变化，后接带to的不定式。 5.1用于否定句，表“不必”

例如：You needn't worry. 你不必担心。

I don't think you need worry. 我想你不必担心。 5.2用于疑问句，表“需要吗” 例如：Need you go? 你得去吗？ -----No, I needn't. 不必。

-----Yes, I must. 是的，我必须去。

5.3 need用作实义动词时，要注意始终以实义动词的标准贯彻到底 例如：（正确）Do you need to go there? （错误）Do you need go there? 6.will和would的用法

6.1 will，用于构成将来时是助动词。用于表示“意志”“决心”“请求”是情态动词。would亦同理。

例如：He'll be here this afternoon. 今天下午他会来这儿。（助动词）

Will you tell her that I'm here? 请您告诉她说我在这儿，好吗？（情态动词）

6.2用于各种人称，表示“意志”“决心”“允诺” 例如：I will try. 我愿一试。

Will you type this, please? 请打印这个，好吗？ Won't you sit down? 请坐下，好吗？ 6.4 would比will客气委婉

例如：Would you help us, please? 请您帮助我们，好吗？（表请求）

I'd go there with you. 我要和你一块到那儿去。（表意愿） Dad wouldn't allow it. 爸爸不会允许这件事。（表许可） 7.shall和should的用法

7.1 shall用于构成将来时是助动词，shall用于征求对方的意见，表示“决心”是情态动词

例如：Perhaps I shall pay a visit to England this winter. 可能今年冬天我会去英国观光。（构成一般将来时，助动词） Shall I turn on the light, Mom? 妈妈，我把灯打开好吗？（用于征求对方的意见，情态动词） I shall be there. 我会到那儿去的。（表“决心”，情态动词） 7.2 should用于构成将来时是助动词。should用于表示“应当”“猜测”是情态动词

例如：We thought we should never see you again. 我们以为再也见不到你了。（构成一般过去将来时，助动词） I should write some letters tonight.今晚我得写几封信。（表“应当”，情态动词）

They should be there by now.他们现在可能到了。（表“猜测”，情态动词） 8.ought to的用法

ought to 表示应该、理应做什么

例如：You ought to clean the classroom , for it is your turn today.你应该把教室打扫了，因为今天是你值日。 9.情态动词表示“推测”的用法

情态动词表示“推测”时，要记住以下两种推测和形式 推测： ①对过去发生动作或状态的推测； ②对现在状态的推测。 两种形式：

①用情态动词加完成时态表示对过去发生动作或状态的推测；

②用情态动词加动词原型表示对现在发生动作或状态的推测。

具体用法如下：

9.1 must have done表示过去一定做了什么，语气十分肯定 例如：You must have finished your work.你一定完成了你的工作。

9.2 can’t have done表示过去不可能做了什么，语气也比较肯定(是上面的否定形式)

例如：He can’t have gone to Beijing, for I had a talk with him just now.他不可能去过北京，因为我刚和他交谈过。 9.3 needn’t have done表示过去没有必要做什么但已经做了。

例如：You needn’t have come earlier. 你不需要来这么早的。

9.4 should have done过去该做什么但没有做。(含有责备的意思)。 例如：You should have started earlier.你本应该早点开始的。 9.5 shouldn’t have done表示过去不该做什么但做了。(含有责备的意思)

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责和义务) 例如：You ought to have helped him. (but you didn’t.)你应该帮助他的。

9.7 can/could do sth.表示对现在情况的猜测，常用于否定句、疑问句或感叹句中。

例如：This news can’t be true. 这消息不可能是真的。 9.8 may/might do sth. 表示对现在情况的猜测，常用于肯定句中。

例如：Mr.Wang may know Professor Li’s telephone number.王先生也许知道李教授的电话号码。

A) needn't have washed B) shouldn't have washed

C) must not have washed D) can not have washed

2) John's score on the test is the highest in the class; he____

last night.

A) should study B) should have studied C) must

have studied D) must have to study

3) The room is in a terrible mess; it ____cleaned. (CET-4,

1996,6)

A) can't have been B) shouldn't have been C) mustn't

have been D) wouldn't have been

4) Nobody knows how people first came to these islands.

They ____ from South America on rafts.

A) must have sailed B) can sail C) might have

sailed D) should have sailed

5) Mary was not in her bedroom yesterday afternoon. She

____ in her classroom.

A) should have been B) must have been C) must

be D) should be

6) Bob said he was going to join our club but he didn't. He

____ his mind.

A) can't have changed B) wouldn't have changed

C) must have changed D) shouldn't have changed

7) You____ to town to see the film yesterday. It will be on

TV tonight.

A) needn't go B) had better not go C) should not

go D) needn't have gone

8) We____ the letter yesterday, but it didn't arrive.

A) must receive B) ought to receive C) must have

received D) ought to have received

9) With all the work on hand, he____ to the cinema last night.

A) mustn't go B) shouldn't have gone C) could not

go D) couldn't have gone

10) Eve was late for class again. She ____earlier.

A) should get up B) must get up C) need to get up D) should have got up

11) I am feeling sick. I____ so much chocolate.

A) needn't have eaten B) couldn't have eaten

C) mustn't have eaten D) shouldn't have eaten

12) I didn't send out my application form last week, but I

____.

A) had B) would do C) should have D)

might have to

13) Walking alone in the deserted village, John was scared.

He thought he____ Tom to go with him.

A) might have asked B) should asked C) must

have asked D) should have asked

14) When I got to the cinema, the film had already started;

I____ there earlier.

A) ought to get B) ought to have got C) must

have got D) must get

15) The road was muddy. It____ last night.

A) must rained B) must have rained C) must be

rained D) could have rained

16) She can speak quite fluent English. She____.

A) must been in the U.S.A. for some time

B) must have been in the U.S.A. for some time

C) should have been in the U.S.A. for some time

D) May be in the U.S.A. for some time

17) You should bear in mind that he is not so strong as

he____. A) was used to be B) used to be C) was used to 3

have gone to see D) may see 19) Mary ____my letter, otherwise she would have replied before now. A) should have received B) has received C) Couldn't have received D) ought to have received 20) I ____ you a valuable present for your birthday, but I was short of money. A) would have liked to give B) liked to give C) have liked to give D) would like to give 21)--- “Where ____ my umbrella?” --- “Somebody ____ it away by mistake.” A) is, must have taken B) is, must take C) have been, must take D) is, takes 22) What ____ would happen if the director knew you felt that way? A) will you suppose B) you suppose C) do you suppose D) you would suppose 23) Two eyes ____see more than one. A) can B) may C) will D) should 24) ____ you continue in your efforts and achieve new and greater successes. A) Would B) Will C) May D) Should 25) We ought to help each other in our work, ____? A) oughtn't we B) should we C) shouldn't we D) ought to we 26) Tom ____ better than to ask Dick for help. A) shall know B) shouldn't know C) has known D) should have known 27) You ____ your tooth pulled out before it rot completely. A) had better got B) had to get better C) had better to get D) had better get 28) When we got to the cinema, the film hasn't started yet, so we ____.

A) needn't hurry B) didn't need hurry C) needn't to hurry D) needn't have hurried 29) It was really very dangerous; you ____ him seriously. A) might have injured B) could injure C) should have injured D) must injure 30) As he had heart attack, he was told that he ____ continue the work. A) needn't B) may not C) mustn't D) can't 31) An Englishman who ____not speak Italian was once traveling in Italy. A) must B) could C) may D) might 32) I ____like to make a suggestion. A) could B) would C) must D) might 33) I know things are hard with you, but you ____try to get over the difficulties. A) can B) may C) must D) ought 34 I can't find the recorder in the room. It ____ by somebody. A) may have been taken away B) may leave C) may take away D) must have taken away 35) He ____the 9:20 train because he didn't leave home till 9:25. A) can reach B) could catch C) may not catch D) couldn't have caught 情态动词部分练习题答案 1)A 2)C 3)A 4)C 5)B 6)C 7)D 8)D 9)D 10)D 11)D 12)C 13)D 14)B 15)B 16)B 17)B 18)C 19)C 20)A 21)A 22)C 23)A

need not bank when the boat sank. 2. “It _______Mary who is in the office.” A. could B. might C. succeeded to D. was able to

“I’m sure it _____her. I saw her off at the airport just 21. _____ repeat the question? twenty minutes ago.” A. Shall I B. Will I C. Would you like that A. can’t be, can’t be B. must be, mustn’t be I D. Do you want that I C. must be, can’t be D. can’t be, mustn’t be 22. Since the ground is wet, it ______ last night. 3. You look pale. You _____ill. A. should have rained B. has rained C. must rain D. A. can be B. must be C. should be must have rained D. has to be 4. You _____in your exercises in time so that you can get them back now. A. should hand B. shall hand C. Shall have handed D. should have handed 5. He saw her only a minute ago, so he said that she ______ not have gone to Tibet. A. must B. could C. might D. need 6. “Won’t you tell me more about your problems?” “I ______talk about it any more.” A. would rather not to B. wouldn’t rather C. would rather not D. wouldn’t rather to 7. “My goodness I just missed the train.” “That’s too bad. I am sure you ___ it, if you had hurried.” A. could have caught B. had caught C. would catch D. could catch 8. I _____ tell her the truth. A. cannot help B. cannot but C. may not help D. could but 9. It was so dark outside that he didn’t _______. A. dare to go out to fetch some water B. dare fetch some water C. dare to go out bring some water D. to dare to fetch some water 10. He left yesterday, so he ______ in Beijing. A. may arrive B. may have arrived C. must arrive D. arrived 11. Comrade Li ____ be in Beijing because I saw him in town only a few minutes ago. A. mustn’t B. can’t C. may not D. isn’t able to 12. You ______ go now. It’s getting late. A. had rather B. would rather C. had better D. would better 13. Since she is angry, we ______. A. had better to leave her alone B. should leave her alone C. might as well leave her alone D. must leave her alone 14. Look, what you’ve done! You _____ more careful. A. may be B. had to C. should have been D. would be 15. She _____ for what she has done. A. ought to praise B. ought be praised C. ought to praised D. ought to be praised 16. I _____ get this done immediately or it will be too late. A. can B. shall C. may D. must 17. _____ I ask your name, please? A. Will B. Shall C. May D. Must 18. Why _____ you always interrupt me? A. can B. will C. may D. must 4

23.______open the door for you? A. Would you like me B. Do you want me

C. Will you mind me D. Shall I 24.Professor Li, many students want to see you. _____they wait here or outside? A. Do B. Will C. Shall D. Are

25.I wasn’t sure whether I _______offer to help or not. A. should B. might C. would D. could 26. “I haven’t felt well for a week.”

“You____ see a door.” A. had ought to B. had better C. should have to D. had rather 27.You _____read that book if you don’t want to.

A. haven’t B. can’t C. mustn’t D. needn’t 28.Although he tried he_____ not make it. A. would B. should C. might D. could 29.I have neither a raincoat nor an umbrella. That’s why I ___wait until the rain stops. A. must B. should C. ought to D. have to 30.He ought ____have done so even if possible. A. not to B. to not C. not D. never 31.It ______be difficult to learn Tibetan. A. shall B. must C. should D. need 32.He promised he _____not do it any more.

A. would B. should C. might D. could 33.I ______ have been here, but I_____ not find the time. A. should, would B. should, could C. might, could D. could, could 34.I want to go the doctor, but you ____with me. A. need not to go B. do not need go C. need not go D. need go not 35.I don’t believe him. He _____ be serious. A. needn’t B. can’t C. mayn’t D. mustn’t 36.Would you like to see the movie tonight? I _____ meet you at the gate of the Student Center. A. may B. will C. must D. ought to 37.I ____ not get away any sooner although I had planned to leave earlier. A. should B. would C. could D. might 38. She quickened her pace in order that she ____ with the others. A. may catch up B. might catch up

say “ You _____ better not.” 40. _____ you rather sit at the back? A. should B. could C. would D. must A. Won’t B. Wouldn’t C. Don’t 7. Put on more clothes. You _____ be feeling cold with only D. Will 41. You _____ yourself about money. A. need not worry B. have worry C. are not being worried D. need not be worried 42. How _______ so? A. dare you to say B. dare you say C. do you dare say D. dare to say 43. The plant is dead. I ____ it more water. A. will give B. would have given C. must give D. should have given 44. There was plenty of time. She ____. A. mustn’t have hurried B. couldn’t have hurried C. mustn’t hurry D. needn’t have hurried 45. “They have changed the program without notice.” “That’s a pity; ________ yesterday’s football match.” A. I like to watch B. I liked watching C. I’d like watching D. I’d like to have watched 46. “Would you like to join us in the game?” “ ______.” A. Much obliged B. You are welcome C. I’d love to D. If you please 47. I think that you had better ____ earlier. A. start getting up B. to get up C. to start to get up D. started getting up 48. To learn to swim well, ________. A. much practice is needed by one B. one is needed much practice C. much practice is needed D. one needs much practice 49. The streets are all dry. It _____ during the night. A. can’t have rained B. mustn’t have rained C. couldn’t rain D. shouldn’t have rained 50. ---- “Did you blame him for his mistakes?” ---- “Yes, but _____ it.” A. I shouldn’t have done B. I shouldn’t do C. I should have done D. I should do 1~5 CCBDB 6~10 CABAB 11~15 BCCCD 16~20 DCDDD 21~25ADDCA 26~30BDDDA 31~35 BABCB 36~40BCBBB 41~45ABDDD 46~50 CADAA 1. “ Must we do it now?” “ No, you ______.” A. won’t B. needn’t C. can’t D. don’t 2. He said he would rather not ____ it right now. A. doing B. to do C. do D. to be doing 3. You _____ to the meeting this afternoon if you have something important to do. A. needn’t to come B. don’t need come C. don’t need coming D. needn’t come 4. “ May I pick a flower in the garden?” “ _________.” A. No, you needn’t B. Not, please C. No, you mustn’t D. No, you won’t

5

a shirt on. A. can B. could C. would D. must 8. I thought you _____ like something to read, so I have brought you some books. A. may B. might C. could D. must 9. There was plenty of time. She ________. A. mustn’t have hurried B. couldn’t have hurried C. must not hurry D. needn’t have hurried 10. The plant is dead. I _____ it more water. A. will give B. would have given C. must give D. should have given 11. It’s freezing outside. You _____ put on your overcoat. A. had better to B. had better C. would better D. would better to 12. You _________ return the book now. You can keep it till next week if you like. A. can’t B. mustn’t C. needn’t D. may not 13. Where is my pen? I _______ it. A. might lose B. would have lost C. should have lost D. must have lost 14. I didn’t hear the phone. I ______asleep. A. must be B. must have been C. should be D. should have been 15. He _____ you more help, even though he was very busy. A. might have given B. might give C. may have given D. may give 16. A computer ______ think for itself; it must be told what to do. A. can’t B. couldn’t C. may not D. might not 17．----Could I borrow your dictionary? ---- Yes, of course you _______. A. might B. will C. can D. should 18. ---- Shall we go skating or stay at home? ---- Which ______ do yourself? A. do you rather B. would you rather C. will you rather D. should you rather 19. Tom ought not to _____ me your secret, but he meant no harm. A. have told B. tell C. be telling D. having told 20. Peter _______ come with us tonight, but he isn’t very sure yet. A. must B. may C. can D. will 21. ----Shall I tell John about it? ---- No, you _______. I’ve told him already. A. needn’t B. wouldn’t C. mustn’t D.

shouldn’t 22. ----- Don’t forget to come to my birthday party tomorrow. ----- ___________. A. I don’t B. I won’t C. I can’t D. I haven’t 23. ---- There were already five people in the car but they managed to take me as well. ---- It ______ a comfortable journey. A. can’t be B. shouldn’t be C. mustn’t have been D. couldn’t have been

高中情态动词练习及解析(五)
高中英语情态动词用法归纳与练习

高中英语情态动词用法归纳与练习

A: can / could = be able to

1 表示能力两种时态can (could)，其他时态要用be able to的形式 He can speak French.

Was/were able to 可以表示成功做成某事的含义* managed to do / succeeded in doing

With our help, he was able to build the house.

2 表示请求或许可 Could 比 Can 更加客气* may

Can I go now? Yes, you can.

3 表示推测或可能性，常用于否定句和疑问句

Can he be at school?

Today is Sunday. He can't be at school.

Can’t couldn’t/ Can ? Could? have done

There is no light in the room. Can she have gone to bed?

She can’t have gone to school----- it’s Sunday.

Could have done 可用在肯定句中表示过去存在的可能性* may have done She could have gone out with some friends yesterday.

Could have done 可以表示虚拟语气

某事可能发生（并没有发生）

It was silly to throw the TV out of the window. It could have hit somebody. 批评某人没有完成某事(本可以做某事)

You are late again. You could have got up earlier.

4 can 表示客观上的可能性*

Anybody can make mistakes.

B: may and might

1 表示请求和允许 类似用法can could(更加口语化)

May I watch TV now? Yes, you may.

2 表示可能性; 猜测might比may更加不确定may/might have done 对过去的揣测*

He may be busy these days.

May not 可能不；不可能；一定不可

3 表示祝愿 Wish you success!

May you succeed!*

C: must and have to

1 表示必须；一定要 可以用 have to 代替

must 现在；将来的必须 而且是主观看法*

have to 有多种时态 而且强调客观情况

I really must stop smoking now.

I had to leave early because I wasn’t feeling well.

Must I come here?

Yes, you must. No, you needn’t. needn’t / don’t have to must not 一定不能

做某事 mustn’t

2 must 表示推测 意思非常肯定 “一定是”“一定会”

It must be raining outside.

Must have done 对过去/完成的推测* must have done, didn’t / hasn’t Must be doing 推测现在正在进行

He must have gone over the article, hasn’t he?

It must have rained last night, didn’t it?

D: need and dare 过去时 dared

情态动词和实意动词的区别

A 人称变化 B do / to do C 直接否定 / 间接否定 can work

Need /dare 肯定句中，实义动词

She needs to do it. I dare to do it.

使用在否定句,疑问句中，情态动词，实义动词。

I dare not do it. I don’t dare (to) do it.

I need not do it. I don’t need to do it.

1 need 情态动词 无时态；人称的变化 多用于疑问句和否定句

You needn’t try to explain.

Needn’t = don’t have to

Needn’t have done sth 过去本不必做某事* 虚拟语气

2 need 实义动词 有时态；人称的变化 后接to do You need to tell us the truth.

The car needs repairing. The car needs to be repaired.

3 dare 情态动词 过去时 dared 无人称的变化 多用在疑问句和否定句 Dare he tell them what he knows?

4 dare 实义动词 有时态；人称的变化后接to do

用于疑问句和否定句时 其后的to 有时可省略

Do you dare (to) jump off the high wall?

E: will and would

1 表示征求对方(第二人称)意见或询问对方意愿 would 比will 更客气委婉 Will you have some more wine?

Would you mind my smoking here?

2 will 表示习惯性动作或某种倾向 would 表示过去习惯性动作或某种倾向 Fish will die out of water.

When I was young, I would play badminton on Sundays.

Would 与 used to 的区别*

Would 只能用来表示重复的动作而不能表示状态

Used to 既可表示动作也可表示状态, 强调现在不如此

He used to be a university student.

3 will 表示意愿 决心

I will never do that again.

F: shall, should and ought to

1 shall 在问句中表示征求对方意见或请求 用于第一，三人称

What shall we do now?

2 shall 肯定句中 表示说话人强烈的感情 允许，命令，禁止和威胁 * 或表示按规定，规章和义务等用于第二，三人称

If you dare to do that, you shall be punished.

These rules shall be obeyed.

Shall not 禁止，不许

3 shall 决心，意愿 = will

I shall come if I want to.

4 should 表示劝告，建议 = ought to 应该

You should wash your hands first.

Should 主要表示主观看法*

Ought to 客观情况 法律、规定、义务的使用

Should have done / ought to have done sth 虚拟语气*

Shouldn’t have done / ought not to have done sth

You should have done it today.

5 should 推测 推论 可能性 = ought to *估计

They should/ ought to be there by now.

6 should说话人的感情。如惊奇、愤怒、失望等、“竟然” 否定句疑问句 You can’t imagine that well-behaved gentleman should be so rude to a lady Why should he do such a thing?

推测 肯定性 可能性 由强到弱

must / shall* / ought to / should / would* / could* / may / might /can 理论上的可能/ can? Could? / can’t couldn’t

must 用于表示"必定"，"必会"：

All mankind must die. (表示必然会发生的事)

所有的人一定会死的。

shall用于表示"必定"：

I shall be rich one day. (shall be )

总有一天我发达的。

ought to / should用于表示"想必会"(语气较must 弱)：

They should / ought to be there by now.

他们想必已到那儿了。

will 和 would 用于表示"预测"或"习惯性"：

I think he will be all right now. (will be 表示一定会)

我想他现在一定好了。

Could 表推测

No, but the shop could be in the east of the city.

may 和 might 用于表示"事实上的可能性"或"预测"：

It may snow later this afternoon. (表示预测)

今天下午可能会下雪。

You might be right. (表示有可能)

你可能是对的。

Can理论上的可能

Anybody can make mistakes. (只表示理论上的可能性)

任何人都可能犯错误。

Can? Could? / can’t couldn’t 疑问否定

He can't be at home. (否定句)

他不可能在家。

Can the news be true ? (将情态动词 can 置于主语 the news 前就成疑问句) 这消息可能是真的吗?

情态动词 be doing

情态动词 have done

must / could / may / might / Can; could? have done / can’t ; couldn’t have done

请求和允许

Can could I; he /may might I; he / will would you / shall should ought to I; he? / Must I?

不同类型语气分析

Can I go with you ? (请求)

我能跟你一起走吗？

Could I ask you something ? (请求,用 could 比 can 更婉转)

我可以问你一件事吗？

May I make a suggestion ?

我可以提个建议吗？

Might I take a look of your work ?

我看看您的大作行吗？

Will you kindly tell me the way to the post office ? (表示客气请求) 请问到邮局怎么走？

Would you give me your address ? (用 would 比 will 表示更客气) 请你告诉我你的地址，好吗？

Shall we talk?

我们谈谈好吗？

What should we do next ? (用should 比 shall 表示更客气)

下一步我们该怎么做？

Shall he come to see you ? (用于第三人称疑问句)

要不要他来看你？

Must I finish the work right now?

Must I pay now ? (用于疑问句) (如回答不必时，需用 needn't 或 don't have to)

我现在就得付款吗？

情态动词的用法：表示“应该”、“必须”命令和建议

（Must, have to , Shall, ought to, Should, May*, Might*,）

Must 用于表示“必须”、“务必”：

You must keep the place clean. (务必)

你务必保持地方干净。

Shall 和 Should 用于表示“必须”：

Each member shall wear a name card. (表示规定)

每一个会员必须配带名卡。

I should answer his letter as soon as possible. (表示应该)

我应该尽快给他回信。

The rules shall take effect on Jan. 1st. (shall 用于规章等，表示义务和规定) 新规则于一月一日起生效。

Ought to 用于表示“应该”(强调客观上)：(大多情况可用 should 代替) You ought to go to see the doctor. (ought to 的语气比must 弱)

你应该去看看医生。

You oughtn't (ought not) to smoke so much. (oughtn't 用于否定句)

你不应该抽这么多烟。

May 和 Might 用于表示“应该"(多用于法律等条文，一般上多用 shall ): Payment may be paid by check. (表示规定)

应以支票付款。

You might ask before you use my computer. (might表示应该)

你应该先问过再使用我的电脑。

情态动词的用法：表示“意图”、“打算” “意愿” “决心”

(will, would* shall, should*)

情态动词+完成式

对过去或完成的猜测must / may /might / could / can’t / couldn’t/can?/could? have done 虚拟语气could have done 本来可以；有可能

needn’t have done 本没必要做某事

should / ought to have done 本应该做某事

shouldn’t / oughtn’t to have done本不应该做某事