高三英语情态动词2
广东梅州东山中学英语组 凌海峰
情态动词表示可能、必要、允许、愿望、猜测等意义，它们本身虽有一定词义，但不能独立用作谓语、也没有人称和数的区别，其后必有动词原形，共同构成复合谓语。
can与could的用法
1)表能力
can表能力时意味着凭体力或脑力或技术等可以无甚阻力地去做某事。
I can climb this pole. 我能爬这根杆子。
He is only four , but he can read. 他只有4岁，但已认得字了。
Fire can’t destroy gold. 火烧不毁金子。
因为can不能和其他助动词连用，所以表示将来式时用will be able to
You will be able to skate after you have practiced it two or three times.
你练习两三次后就会溜冰了。
2)表可能性
多用于否定与疑问结构中，但也可用在肯定句中。
Can the news be true? 这消息可能是真的吗？
It can’t be true. 它不可能是真的。
What can he possibly mean? 他可能是什么意思？
can 用在肯定句中表示理论上的可能性。
The road can be blocked. 这条路可能会不通的。
may 在肯定句中表示现实的可能性。
The road may be blocked. 这条路可能不通了。
3)表示允许（和may意思相近）常见于口语。
Can (May) I come in ? 我能进来吗？
Can I smoke here ? 我可以在这里抽烟吗？
could的用法
1)表过去的可能和许可，（多用于间接引语中）
At that time we thought the story could not be true. 那时我们认为所说的事不可能是真的。
Father said I could swim in the river. 爸爸说我可以在河里游泳。
2)表过去的能力
I could swim when I was only six. 我刚六岁就能游泳。
Could在肯定句中表示过去的能力时，常表抽象的一般的能力。
He could be very naughty when a child. 他小时候会是很顽皮的。
如表具体做某一件事的能力时，则须用 were/was able to .
He was able to translate the article without a dictionary. 他可以不用词典翻译那篇文章。
3) could 加完成式用于肯定句时一般表过去可能完成而却未完成的动作。
I could have passed my examination easily but I made too many stupid mistakes.
我本可以轻易通过考试，但我犯了太多不该犯的错误。
情态动词may与 might 的用法
may 的主要用法
1)表示请求、可以、允许。
You may drive the tractor. 你可以开那台拖拉机。
2)当回答由may 引起的问题时，否定答语要用must not,表示“不许可”、“不应该”、“不行”。
May I come in?
Yes, you may.
No, you mustn’t.
3)表建议（可和as well 连用）
You may as well stay where you are.
你还是原地待着好。（may as well 有“还是……的好”的含义）
might的主要用法
1)表过去的“可能”和“允许”多用于间接引语。
She said that he might take her dictionary. 她说他可以拿她的词典去用。
除在间接引语中外，might一般不表示过去的“可能”与“许可”。表过去的“可能”可用could，表过去的“许可”可用were (was) allowed to。
2)表现在的“可能”，其可能性要比may小。
Electric irons could be dangerous; they might give you a severe shock.
电熨斗会有危险，它可能电着人。
3)may (might) + have +done 表示对过去发生行为的推测，含有“想必”、“也许是”的意思。
It may have been true. 这事也许是真的。
He might not have settled the question. 他可能尚未解决那个问题。
情态动词 must与have to 的用法
1、must 的主要用法。
1)表示必须、必要
We must do everything step by step .我们必须按部就班地做一切事情。
2)must be + 表语的结构，通常表示猜测，含有“一定”之意。（只用在肯定句中）
He must be an honest boy. 他一定是个诚实的男孩。
This must be your room. 这一定是你的房间。
3)must 的否定式有两个：当回答由must引起的问题时，否定答复要用needn’t或don’t have to 表示“不必”、“无须”、“用不着”、“不一定”的意义。当表示“不应该”、“不许可”、“禁止”时，就用must not。
Must I go tomorrow?明天我必须去吗？
Yes, please.是的，请吧！
No , you needn’t. 不，你不必去。
4)must +have +过去分词的结构，常用在肯定句中，表示对过去发生行为的推测，含有“一定”、“准是”的意思。否定和疑问句用can。
She must have studied English before.她以前一定学过英语。
2、have to的含义与must是很接近的,只是have to 比较强调客观需要，must着重说明主观看法。
I must clean the room.（主观想法）
I have to clean the room.（客观需要）
另外，have to 能用于更多时态：
We had to be there at ten. 我们得在十点钟到那里。
We will have to reconsider the whole thing. 这一切我们将不得不重新加以考虑。
have to 的否定式：don’t have to do 表示“不必做……”之意。
情态动词ought to 的用法。
Ought to 后接动词原形，表义务，但不及must 那样具有信心，如：
You don’t look well. You ought to go to see the doctor. 你气色不好，应该去看病。
Ought to 用于否定句，其否定形式可缩略为oughtn’t ，如：
You oughtn’t to smoke so much. 你不应该抽这么多烟。
也可以用于疑问句，如：
Ought you to smoke so much? 你应该抽这样多烟吗？
Ought to 在间接引语中表过去时形式不变，如：
He said you ought to tell the police. 他说你应该去报告警察。
情态动词shall与should 的用法
1、shall的用法
1)用于第一人称征求对方的意见，如：
What shall I wear on the journey? 我路上穿什么好呢？
Shall we dance? 我们跳舞好吗？
2)shall 用于第二、三人称时表允诺（现已少见），如：
She shall get her share. 她可以得到她的一份。
You shall have it back tomorrow.你明天可以将它拿回。
情态动词should一般不应被认为是情态动词shall的过去式，主要用法有：
1)用于第一人称疑问句中询问对方的意愿，但语气较委婉温和，如：
What should we do now? 我们现在该怎么办？
2)表示应该、必须，常与must 换用。例如：
We should (must) master a foreign language at least. 我们应当至少掌握一门外语。
3)“should+be+表语”的结构，表示推测或惊奇。例如：
They should be back by now. 他们现在应该回来了吧。
I am sorry that she should be so careless. 我感到遗憾她竟会那样粗心。
4)“should+have+过去分词”的结构，表示过去该做而实际上尚未做的动作或行为；其否定则表示发生了不应该发生的行为。其同义结构“ought to have +过去分词”,表示过去“早应该”、“本当”之意，语气较强。例如：
I should have thought of that. 这一点我是应当想到的。（但没想到）
They should not have left so soon.他们不应当走得这么早。（但已走了）
5) 在“It is natural (strange, necessary, surprised, impossible, important ) that……”句型中，主语从句中的谓语动词要用should +动词原形”表示“理所当然”、“奇怪”、“必要”、“惊异”等的意思。在lest（以免）、for fear (that) (以防)、in case（以备万一）等之后也要用“should+动词原形”例如：
It is necessary that he(should) be sent there at once. 有必要马上派他到那里去。
It is strange that he should say so. 他会说这样的话真是奇怪。
Let us go at once lest we should be late for the train. 我们马上走吧，以免赶不上火车。
情态动词will和would的用法
1）表示意志，决心或愿望。例如：
Surely we will support all the people in the world in their struggle for peace.
我们一定要支持全世界人民争取和平的斗争。
He would not let me try it . 他不肯让我去试。
2）will表示经常性、习惯性、倾向性，would表示过去的习惯行为。
He will sit there hour after hour looking at the traffic go by.
他会经常一连几个小时坐在那儿观看来往的车辆。
He would come to see me when he was in Beijing.
他在北京时，常来看望我。
3）用于第二人称作主语的疑问句中，表示对对方的请求，would的语气比will委碗。如: Would/Will you kindly tell me the way to the station? 请问到火车站怎么走？
情态动词need和dare的用法
这两个词只能算“半情态动词”，它们作情态动词用时，一般用在否定句和疑问句中，如果用在肯定句中，多数是实义动词，一般现在时单数第三人称就要加s，并有时态变化，后接不定式时须带to, 试比较：
Need I explain once more? 需要我再解释一次吗？（情态动词）
The question needs to be discussed. 这个问题需要加以讨论。（实义动词）
She dare not tell the truth to him. 她不敢向他讲真话。（情态动词）
We should dare to think, to speak and to act. 我们应该敢想、敢说、敢干。（实义动词）
need与have to 用法辨析
1) need表示需要，主要用于否定句和疑问句。用于疑问句，肯定回答用must，否定回答用needn't。have to表示他人或客观情况要求“必须”，也可以翻译为“不得不”，have to否定形式意思是“不一定”或“没有必要”。
【例如】
You needn't come if you don't want to.
I don't think you need be so polite to her.
You don't have to work so hard if you just want to pass Band 4.
Because of the heavy rain, the children have had to get up earlier than usual this week.
【例如】
It was very kind of you to do the washing-up, but you ____it.
A) mustn't have done B) would not have done
C) might not have done D) didn't have to
本句译为：你把这些东西洗了，你真是太好了。但是你没有必要洗。must, would, might后面接动词的完成式，都很少用否定式，而didn't have to表示没有必要，符合题意，故答案为D.
2) need后面接动词的完成式，主要用于否定句，表示本可不必做某事。
【例如】
You ____ all those calculations! We have a computer to do that sort of thing. (CET-4 1991)
A) needn't have done B) must not have done
C) shouldn't have done D) can not have done
“needn't +不定式完成式”表示“本来不必做，但实际做了”。题意是：你没有必要做全部计算，这类计算我们用计算机来做。故答案为A.
情态动词must用法详解
1) must表示必须，否定回答时用needn't. mustn't表示不许可。
【例如】
You must get to the station before 3, otherwise you will miss the train. Must I hand in my homework tomorrow?
No, you needn't. You can turn it in the day after tomorrow.
You mustn't smoke in the hospital.
2) must用于肯定句，可以表示推测，翻译为：一定或想必。后面接动词的一般时，表示对现在的推测，接动词的完成式，表示对过去的推测。对过去的推测是考试的重点。
【例如】
She must live near here, for she comes to work on foot.
She was absent from class. There must have been something wrong with her.
The light was out. They must have gone to bed.
Mary's score on the test is the highest in her class. She ____ have studied very hard.
A) may B) should C) must D) ought to
“must +不定式完成式”表示对过去发生事情的推测。题意为：玛丽的考试成绩全班第一，她学习一定很刻苦。答案为C.
情态动词难点透视
英语中的情态动词虽然为数不多，但是要掌握好它们的用法并不容易。本文结合同学们在使用情态动词时不易掌握的难点谈几点看法。
1．can表示可能性时，指的是理论上的可能，它通常不用来表示某事实际发生的可能性或真实性。如：
Accidents can happen．Anybody can make mistakes．
如果我们要表达某事发生的实际可能性，要用may, could或might等。
We may spend our summer holidays in Hangzhou this year．
Will you answer the telephone﹖ It could／may／might be your mother．
2．could用来征求意见时，语气要比can委婉，但在回答问题时我们不能用could,因为语气委婉，可能性就变小了。如：
—Could I use your telephone﹖
—Yes, please go ahead．
3．在过去时态的肯定句中需要某种条件或努力做成某事，我们要用was/were able to而不能用could。如：
It was a holiday and the children were able to go to the seaside．
The girl worked hard so she was able to pass the final test．
4．must与have to都可以表示“必须”的意思，但要注意以下两点区别。
1) must只有现在时，而have to有现在时、过去时和将来时。如：
We must work hard, or we’ll fail in the examination．
Two years ago, the poor girl had to leave school for lack of money．
2) must表示主观看法，have to则侧重于客观需要。如：
We must be strict with ourselves in everything．
In cities with many cars, some people have to wear masks．
5．must表示推测时，其反意问句有好几种形式。
1) “must＋动词原形”对目前的情况进行推测时以及用must＋be＋-ing形式对目前正在发生的情况进行推测时，疑问短语部分要与must之后的动词相一致。如：
The mathematics teacher must be in the office now, isn’t he﹖
2) “must＋have＋过去分词”用来表示对已经发生的事情进行推论。如果句子中有过去的时间状语，疑问部分用助动词didn’t否则，疑问部分用haven’t或hasn’t。如：
The children must have watered the tomatoes yesterday, didn’t they﹖
The minister must have arrived in Shanghai, hasn’t he﹖
6．shall可以用来征求对方意见。用于第一、三人称。此外它也可以用来表示说话人的命令、警告、允诺、威胁或决心等，这时它用于第二、三人称。如：
Shall she go to the concert with us this evening﹖ (征求意见)
You shall go to the front at once．(命令)
Don’t worry．You shall get the answer this very afternoon．（允诺）
He shall be sorry one day．I tell you．(警告)
Nothing shall stop us from fighting against pollution．(决心)
7．在表示将来的时间、条件状语从句中，不能用will（这时的will不是情态动词，而是助动词，帮助构成将来时）。如： If it will rain tomorrow, we shall not go to the mountain village．(误)
If it rains tomorrow, we shall not go to the mountain village．(正)
当情态动词will表示意愿或决心时，是可以用于条件状语从句的。如：
If you will listen to me, I’ll give you some advice on how to learn English．
如果你愿意听我的话，我将给你提点学习英语的建议。
If you will come this way, the manager will meet you． 请您往这边走，经理现在要见你。
8．should除表示必要或义务外，还可表示推测或可能。如：
The American friends should be here now．
“should／ought to＋have＋过去分词”既可表示本该做而事实上没有做的事，也可以表示惊讶、赞叹等情绪。如：You should have told her about it the day before yesterday．
It’s wonderful that you should have achieved so much in these years．
“情态动词＋have＋过去分词”是很重要的一种句型，除should外，may, might, must, couldn’t, needn’t, ought to等都可以用于这一句型，但要注意使用不同的情态动词,句子的意思就有所不同。
9．ought to与should意思接近，大多数情况下二者可以互换，但是should谈的是自己的主观看法，ought to则更多反映客观情况，在谈到法律、义务和规定时使用。如：
We should／ought to help each other and learn from each other in our work．
She is your mother, so you ought to support her．
We ought to go and see Mary tomorrow, but I don’t think we will．
10．need用作情态动词，仅用于否定句和疑问句，而不用于肯定句。在肯定句中要用must, have to, should, ought to或将need当作行为动词使用。如：
We need report the matter to the boss immediately．(误)
We must report the matter to the boss immediately．（正）
We need to report the matter to the boss immediately．（正）
情态动词表推测精炼精析
1. Michael __ be a policeman, for he's much too short.
A. need't B. can't C. should D. may
2. Johnny, you __ play with the knife. You ___ hurt youself.
A. won't, can't B. mustn't, may C. shouldn't, must D. cant't, shouldn't
3. Peter __ come with us tonight, but taken he isn't very sure yet.
A. can B. may C. will D. must
4. Put on more clothes. You ___ be taken feeling cold with only a shirt on.
A. must B. can C. could D. would
5. It's nearly seven o'clock. Jack __ be here at any moment.
A. must B. need C. should D. can
6. I didn't hear the phone. I __ asleep.
A. must be B. must have been C. should be D. should have been
7. Jack __ yet, otherwise he would have telephoned me.
A. mustn't have arrived B. shouldn't have arrived
C. can't have arrived D. need not have arrived
8. --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
9. He __you more help, even though he was very busy.
A. might have given B. might give C. may have given D. may give
10. Yesterday Jane walked away from the discussion. Otherwise, she __ something she would regret later.
A. had said B. said C. might say D. might have said
11. There was plenty of time. She ____.
A. mustn't have hurried B. needn't have hurried
C. should have written it out D. couldn't have hurried
12. Tom ought not to ____ me your secret, but be meant no harm.
A. have told B. tell C. be telling D. haven't told
13. I told Sally how to get there, but perhaps I ____ for her.
A. had to write it out B. must have written it out
C. should have written it out D. ought to write it out
14. If you had worked harder, you ____.
A. would succeed B. had succeeded
C. should succeed D. would have succeeded
15. --If he ____, he ____ that food.
--Luckily he was sent to the hospital immediately.
A. was warned; would not take B. had been warned; had not taken
C. would be warned; had not taken D. would have been warned; had not taken
16. --I stayed at a hotel while in New York.
--Oh, did you? You ____ with Barbara.
A. could have stayed B. could stay C. would stay D. must have stayed
17. Sorry I'm late. I ____ have turned off the alarm and gone back to sleep again.
A. might B. should C. can D. will
18. --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
19. The new airport ____ if they had not stopped working on it.
A. would complete B. had been completed
C. had completed D. would have been completed
20. I didn't see her in the meeting-room this morning. She ____ at the meeting.
A. mustn't have spoken B. shouldn't have spoken
C. needn't have spoken D. couldn't have spoken
21. That young man has made so much noise that he ____ not have been allowed to attend the concert.
A. could B. must C. would D. should
22. Susan ____ written a report like this.
A. can have B. mustn't have C. can't have D. ought to not have
23. There was a lot of fun at yesterday's party. You ____ come, but why didn't you?
A. must have B. should C. need have D. ought to have
[答案及难点解析]
1. B 2. B mustn't表示“禁止”，may表示“不可能” 3. B can表示“理论上的可能、普遍性的可能、当然的可能，并非说话人主观认为可能，即并非猜测”，故不可选A。4. A 5. C at any moment/minute意为“随时，马上”。 6. B 由句中的时态可知是在对过去的事件进行推测，故用情态动词+have done。7. C 由otherwise…一句可知说话人对Jack没有来持确定的态度。除所给答案外，A也正确。 8. D与7题相似，C也是正确的，意为“肯定不舒服”。 9. A may不可表示过去的事。 10. D 11. B表示“当时本没必要那么匆忙”。 12. A 13. C 14. D 15. B 16. A二人相遇的可能性不大。17. A 18. A 19. D对过去情况的虚拟假设，注意要用被动语态。20. D 21. D 22. C据常识可知是在对过去的事进行推测。23. D
情态动词练习
1．May I stop my car here?
No, you_＿＿＿.
A. can't B. mustn't C. needn't D. don't have to
2. Must we clean the house now?
No, you _______.
A. needn't B. may not C. mustn't D. can't
3. 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
4. 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
5. 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
6. The fire spread through the hotel very quickly but everyone _______ get out.
A. had to B. would C. could D. was able to
7. 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
8. Man _______ die without water.
A. will B. can C. need D. shall
9. If he started at 9 0'clock, he _______ be there by now.
A. need B. shall C. ought to D. must
10. I mailed the letter two weeks ago. She _____ it.
A. must receive B. can't receive C. might receive D. must have received
11. The professor gave orders that the experiment _______ before 5:30 p.m.
A. be finished B. will finish C. must be finished D. would be finished
12. There was plenty of time. You _____.
A. mustn't hurry B. mustn't have hurried C. needn't hurry D. needn't have hurried
13. 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
14. ______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
15. 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
16. Would you open the window please?
Yes, I______.
A. will B. would C. do D. can
17. A lion _______ only attack a human being when it is hungry.
A. should B. can C. will D. shall
18. ____Must I finish this novel this morning ?
____No, you_____.
A. mustn't B. might not C. don't have to D. can't
19. 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
20. 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
21. I wish to go home now, _______ I?
A. may B. can't C. must D. do
22. He must have finished his homework, _______ he?
A. mustn't B. didn't C. needn't D. hasn't
23. This pen looks like mine, yet it isn't. Whose it _______ be?
A. must B. can C. may D. might
24. 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
25. I wonder how he _______ that to the teacher.
A. dare to say B. dare saying C. not dare say D. dared say
26. Mr. Baker, a number of students want to see you. _____ they wait here or outside?
A. Should B. Will C. Shall D. Are
27. 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
28. I _______ give you an answer tomorrow. I promise!
A. must B. will C. may D. shall
29. As a soldier, you _______ do as the head tells you.
A. will B. shall C. may D. ought
30. 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
31. "When _____ he leave the hospital?" I asked the doctor.
A. will B. shall C. can D. may
32. They have not finish the work up to now.
____Well, they ______
A. should have B. should C. ought to D. ought have
33. Since it is already midnight, we______.
A. had better leaving B. ought to have leave
C. should take our leave D. might as well leave
34. _______ you be happy!
A. May B. Can C. Must D. Would
35. Must we come tomorrow?
A. No, you can't B. No, you needn't
C. No, you mustn't D. No, you may not
36. You _______ miss the lesson, though we _______ have it on Thursday.
A. mustn't...needn't B. needn't....mustn't
C. mustn't...mustn't D. needn't...needn't
37. To succeed in a difficult task, _____.
A. one needs to work hard B. to work hard is needed
C. you need be a hard working person D. to work hard is what one needs
38. In case I______, I would try again.
A. will fail B. would miss C. should fail D. shall miss
39. Some people feel that handguns______.
A. should control B. should be controlled
C. must be controlling D. can be control
40. ______ open the door for you ?
A. Would you like that I B. Do you want that I
C. Will I D. Shall I
41. My son ____ the examination, but he wasn't careful enough.
A. might be able to pass B. must have passed
C. could have passed D. were able to pass
42. Isn't it strange that the lazy boy pass the exam?
A. should B. has C. might D. would
43. We _______ the work so early without your help.
A. couldn't finish B. can't finish
C. couldn't have finished D. can't have finished
44. We the manager, but no one _____ his telephone number.
A. could have called, knew B. could have called, had known
C. could call, had known D. could call, knew
45. "Would you come and join them?"
"I wish I _______. But I am busy at this moment.
A. can't B. couldn't C. could D. can
46. If Alice _______ this afternoon, the meeting should be put off.
A. would not come B. might not come
C. should not come D. could not come
47. I didn't see her in the meeting room this morning. She _______ at the meeting.
A. mustn't have spoken B. shouldn't have spoken
C. needn't have spoken D. couldn't have spoken
48. With so much work on hand, you _______ to see the game last night.
A. mustn't go B. shouldn't go
C. couldn't have gone D. shouldn't have gone
49. I thought you _______ like something to read, so I have brought you some books.
A. may B. might C. could D. must
50. 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
51. It's still early, you ______.
A. mustn't hurry B. wouldn't hurry
C. may not hurry D. don't have to hurry
52. Please open the window, ________?
A. can't you B. aren't you C. do you D. will you
53. We _______ for her because she never came.
A. mustn't have waited B. shouldn't have waited
C. mustn't wait D. needn't wait
54. May I stop here? No, you ____.
A. mustn't B. might not C. needn't D. won't
55. He _____ you more help, even though he was very busy.
A. might have given B. might give
C. may have given D. may give
56. I didn't see her in the meeting room this morning. She _______ at the meeting.
A. mustn't have spoken B. shouldn't have spoken
C: needn't have spoken D. couldn't have spoken
57. Could I borrow your dictionary? Yes, of course you______.
A. might B. will C. can D. should
58. Please don't make a noise. _______ . I'll be as quiet as a mouse.
A. Yes, I won't B. No, I won't C. No, I will D. Yes, I will
59. The young man has made so much noise that he _______ not have been allowed to attend the concert.
A. could B. must C. would D. should
60. One ought _______ for what one has done.
A. not to be punished B. to not be punished
C. to not punished D. not be punished
61. If you really want yourself to be in good health, you must _______ always _______ so much.
A. not, be smoking B. not, have smoked
C. not, to smoke D. be not, smoking
62. Where is Mary? She isn't here. I think she_____.
A. may have gone home B. must have gone home
C. might have gone home D. All the above
63. I think Helen is at home.
No, she _______ be at home, for she phoned me from the airport just five minutes ago.
A. mustn't B. needn't C. can't D. dared not
64. She is already two hours late. What _______ o her?
A. can have happened B. may have happened
C. should have happened D. must happen
65. “_______ he be watching TV now?”
"Yes, he _______ be watching TV now."
"No, he _______ be watching TV now."
A. Must, can, mustn't B. Can, must, can't
C. Can, can, mustn't D. May, must, needn't
66. You must be a writer, ______?
A. mustn't you B. are you C. must you D. aren't you
67. You must have seen him last night, _______?
A. haven't you B. didn't you C. don't you D. must you
68. I got up early this morning, but I _______so because I had no work to do.
A. mustn't have done B. didn't need to do
C. needn't have done D. can't have done
69. Let's say that you could go there again, how _______ feel?
A. will you B. should you C. would you D. do you
70. I daren't tell you what he did for fear that he _______ angry with.
A. will be B. is C. was D. should be
71. Without the leadership of the Party, there _______ no New China.
A. would be B. has been C. was D. should be
72. It is necessary that we _______ a foreign language.
A. must master B. ought to master C. master D. should master
73. Most of the students felt rather disappointed at the English party. They say that it ___ better organized.
A. had been B. had to be C. must have been D. could have been
74. I am surprised that he _______ to help me when I needed it most.
A. should refuse B. would have refused
C. should have refused to D. may have refused
75. Look! Tom is too sleepy to work. He ____ up watching TV.
A. mustn't have stayed B. shouldn't have stayed
C. mustn't stay D. ought not to say.
练习题答案
1－10 BACCB DCADD 11－20 ADACA ACCBC 21－30 ADBBD CBBBA
31－40 BADAB AACBD 41－50 CACAC CDDBD 51－60 DDBAA DCBDA
61－70 ADCAB DBCCB 71－75 ADDCB