1.I promised to get there before 5 o’clock, but now the rain is pouring down. They ______ for me impatiently.
A. may wait
B. ought to wait
C. could wait
D. must be waiting
2. He was very brave. Even though she’d hurt her leg, she ________ go bac k alone.
A. could
B. might
C. have to
D. was able to
3. You ________ pay too much attention to your reading skill, as it is so important.
A. cannot
B. should
C. must
D. needn’t
4. I’ve tried several times, but the car just _______.
A. doesn’t start
B. wouldn’t start
C. won’t start
D. didn’t start
5. Always the old lady ______ sit for hours doing nothing at all.
A. was used to
B. would
C. used to
D. should
6. There used to be a small school,___________?
A. was there
B. wasn’t it
C. usedn’t there
D. usedn’t it
7. Our house is on the top of the hill, so in summer the wind _____ be pretty cold.
A. must
B. can
C. ought to
D. need
8. Haven’t I told you that you __________ have t he answer tomorrow morning?
A. will
B. shall
C. should
D. would
9. I’m surprised that he _______ in the match.
A. should fail
B. should have failed
C. would have failed
D. may have failed
10. Better go to see my sick colleague right now, ________I?
A. hadn’t
B. didn’t
C. don’t
D. won’t
11. Sir, you ______ be hunting deer here, for they are preserved by the government.
A. oughtn’t to
B. can’t
C. won’t
D. needn’t
12. 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
13. — There were already five people in the car, but they managed to take me as well.
— It __________ a comfortable journey.
A. can’t
B. shouldn’t be
C. must have been
D. couldn’t have been
14. To be on the safe side, we should fill up the tank now, because we ______ run out of gas on the way.
A. can
B. would
C. might
D. should
15. ____ three people who travel together, there _____ be at least one who ____ be my teacher.
A. Between; can; will
B. In; should; could
C. Among; will; may
D. Of; must; can
16. —Could you lend me that book you ______ me about when I telephoned you? —No, I am sorry, I can’t. I gave it to a friend.
A. were telling
B. would tell
C. had told
D. had been telling
17. —We need a person badly to think up such an idea.
—_______ the new comer have a try?
A. Shall
B. May
C. Should
D. Need
18. We ________ so tired. We’ve only been to a party.
A. mustn’t have felt
B. wouldn’t have felt
C. shouldn’t have felt
D. couldn’t have felt
19. Professor Smith, many students want to see you. __________ they wait here or outside?
A. Do
B. Shall
C. Will
D. Would
20. —How about paying a visit to Mr. Richardson, our former history teacher? —Good idea. I will e-mail him today so he _____know _________ to expect us.
A. shall; why
B. may; when
C. would; why
D. will; how
21. —I went to work on foot yesterday, though it _________ cats and dogs.
—You __________ by bus. It was likely to get a cold.
A. is raining; must have gone
B. rained; would go
C. was mining; should have gone
D. have rained; could have gone
22. You ______ pay too much attention to your reading skill, as it is so important.
A. cannot
B. should
C. must
D. needn’t
23. I told Sally to fix him up with this job, but perhaps I _________ it out for her.
A. had to write
B. must have written
C. should have written
D. ought to write
24. My sister met him at the Grand Theatre yesterday afternoon, so he ________ your lecture.
A. couldn’t have attended
B. needn’t have attended
C. mustn’t have attended
D. shouldn’t have attended
25. Research findings show we spend about two hours dreaming every night, no matter what we ________ during the day.
A. should have done
B. would have done
C. may have done
D. must have done
26. —Is there any flight to Tokyo today?
— I think there _____, for the weather is too bad.
A. mustn’t be
B. mightn’t be
C. needn’t be
D. can’t be
27. —I’m told that John had another car accident this morning.
— I believe not. He _____ so careless.
A. shouldn’t have been
B. wouldn’t have been
C. couldn’t have been
D. mustn’t have been
28. It was playing computer games that cost the boy a lot of time that he __________ doing his lessons.
A. might have spent
B. ought to have spent
C. must have spent
D. could have spent
29. —I didn’t know you were good friends.
—You _______. I have known her since she moved here. You were studying abroad then.
A. may have
B. needn’t have
C. couldn’t have
D. must have
30. They must have finished the work by the end of last month, __________?
A. mustn’t they
B. haven’t the y
C. hadn’t they
D. didn’t they
31. —I didn’t see her yesterday.
— Of course, you _____, because he had gone for a trip.
A. can’t
B. may not have
C. can’t have
D. mustn’t have
32. You ________ phone him if you want to, but you _________. He is sure to phone you.
A. may; mustn’t
B. have to; needn’t
C. can; doesn’t need
D. can; needn’t
33. — She must have gone back to the valley.
— ______, she _____ have. The entrance to it was nowhere to be found.
A. No; mustn’t
B. Yes; might
C. Yes; could
D. No; couldn’t
34. He _____ full marks, but he was so careless as to make a spelling mistake.
A. must have gained
B. can have gained
C. could have gained
D. must gain
35. From what you said, she _____ you about it.
A. mustn’t have told
B. can’t have told
C. mustn’t tell
D. can’t tell
36. — You ought to have made an apology to Tom yesterday evening.
— Yes, I know I _________.
A. ought to
B. have to
C. should have
D. must have
37. —Is there a fog in the evening?
—There _______ be. I’ll make a phone call to find it out.
A. must
B. would
C. will
D. might
38. — _______ he help you with the problem?
—Well, though it is very hard, __________ I’ll do what I can to work it out.
A. Shall; but
B. Can; and
C. Must; however
D. Will; still
39. —How is that, Joan?
—Yeah, it’s from the boss. She _________ first, whether she likes it.
A. shall go
B. ought to have gone
C. should go
D. must have gone
40. —Would you like to watch the video, in which you can see foreigners making jiaoji during the Spring Festival?
—Sure, it ______ be very interesting.
A. should
B. may
C. can
D. will
41. —The door was open.
—It _________ open. I had locked it myself and the key was in my pocket.
A. can not be
B. must not be
C. can not have been
D. must not have been
42. —Where ________ Margaret have put the empty bottles?
—She ________ them away. They must be somewhere.
A. can; can’t have thrown
B. must; needn’t
C. must; must have thrown
D. cant; must throw
43. —Mum, I climbed to get the Teddy Bear from the top of the shelf.
—My goodness! You _______ yourself. You ______ do that next time.
A. must have hurt; mustn’t
B. should have hurt; can’t
C. may have hurt; mustn’t
D. might have hurt; won’t be able to
44. —Shall I go and buy more food and drinks for the party?
—No, we have prepared a fridge of those. That _______ be quite enough.
A. can
B. may
C. might
D. ought to
45. —Hurry up, Michael! It’s ten to three.
—Goodness me! The class_______. I’ll be late again.
A. must begin
B. may begin
C. should have begun
D. must have begun
46. When he was there, he ____ go to that coffee shop at the street comer after work every day.
A. would
B. should
C. had better
D. might
47. —I hear you have written a novel.
—Yes, the book ________ be out in a month or so.
A. can
B. dare
C. should
D. need
48. —How could I thank you enough?
—Don’t mention it. Any other man _________ that.
A. must do
B. could do
C. would have done
D. should have done
49. —Why aren’t they here yet?
—They ________ the bus.
A. can have missed
B. must be late for
C. may have missed
D. might be late for
50. Mike _______ come to see me I don’t want to go out in case he comes.
A. can
B. must
C. may
D. will
51. The thief ________ in from the kitchen window as the door was closed.
A. may climb
B. must have climbed
C. could have climbed
D. should have climbed
52. —You didn’t invite Bill?
— __________ him too?
A. Must I invite
B. Must I have invited
C. Should I invite
D. Should I have invited
53. —Why didn’t you attend the lecture yesterday?
—I didn’t think that we _______ on Sundays.
A. should
B. ought to have
C. shouldn’t have
D. will have to
54. It’s said that there are plenty of hotels in that town. There ______ be any difficulty for you to find somewhere to stay.
A. wouldn’t
B. mustn’t
C. shouldn’t
D. needn’t
55. —Would you be here to attend the English party this evening?
—Yes, we _________.
A. shall
B. would
C. will
D. must
56. On Sundays when I was a child, Father and I _______ get up early and go fishing.
A. could
B. would
C. might
D. should
57. —You’d better keep quiet in class.
—Sometimes I ________ Yesterday, I was very quiet during my English class.
A. would
B. do
C. did
D. have
58. I lived with my sister this summer and didn’t have to pay rent. So I ______ save most of my salary.
A. could
B. would
C. was able to
D. should
59. —Look, John’s fallen asleep.
— Oh, he _______ too late last night.
A. might sit up
B. should have sat up
C. could sit up
D. must have sat up
60. —I posted the letter a week ago.
—Then they __________ the letter by now. It usually takes four days.
A. can have received
B. must receive
C. should receive
D. ought to have received
61. He used to teach in that university and I _________ ride past it on my way to work.
A. would
B. could
C. should
D. might
62. —So you have to leave now.
—Yes, I __________.
—How nice it would be if you could stay a bit longer!
A. have to
B. ought to
C. do
D. have
63. He _______ Shanghai, for I saw him talking with the headmaster a moment ago.
A. must have gone to
B. can’t ha ve gone to
C. mustn’t have been to
D. can’t have been to
64. From what I learn about their hotel, the service and the weather, they _____ their holiday very much.
A. wouldn’t have enjoyed
B. shouldn’t have enjoyed
C. needn’t have enjoyed
D. can’t have enjoyed
65. It is not like Jack to be unfriendly, so he _________ you when you called.
A. can’t have seen
B. should not have seen
C. must not have seen
D. need not have seen
66. —Many people in England love to give advice on weather reporting.
—Yes, but I think the weather office’s computers _________ be more accurate.
A. can
B. must
C. ought to
D. might
67. —The farmers lived near the high way.
—________ very noisy.
A. It must have been
B. They must be
C. That might be
D. There must be
68. She is too slow. She ________ pass the test, but she __________ too little.
A. would; knew
B. will; knows
C. would; knows
D. will; knew
69. —Mary didn’t turn up last time, did she?
—No. She_________. We had changed our plan.
A. shouldn’t have come
B. needn’t have to come
C. didn’t need to come
D. needn’t have come
70. —They haven’t finished the work up to now.
—Well, they________.
A. should
B. should have
C. would
D. must have
71. —Shall I go and buy more fruit for the party?
—No, I have already bought 3 baskets. That _________ be enough.
A. can
B. ought to
C. may
D. might
72. —Why hasn’t the speaker turned up?
—He _________ the flight. I’ll find it out at once.
A. must have missed
B. might have missed
C. would have missed
D. could have missed
73. I _______ pay Tom a visit, but I am not sure whether I will have time this Sunday.
A. should
B. might
C. would
D. could
74. —Who is the girl standing over there?
— Well, if you _____ know, her name is Mabel.
A. may
B. can
C. must
D. shall
75. It has been announced that candidates (考生)________ remain in their seats until all the papers have been collected.
A. can
B. will
C. may
D. shall
【答案解析】
1．D。must表示推测。根据句意：他们一定正在等我们。所以用must be waiting。2．D。由even though可知该题意为：她很勇敢，尽管她腿受了伤，她仍然设法独自回家了。而be able to= manage to，有克服困难设法成功之意。
3．A。cannot / can not / never … too/ enough是一固定搭配，表示“越……越好”、“再……也不过分”。
4．C。考查情态动词will的用法。will表示意志、意愿和决心。
5．B。used to和would都有“过去常常”之意，但used to有今昔对比之意，现在再也不这样了。而would无此用法。
6．C。解此题的关键：一、掌握反意疑问句的基本构成，即“前肯后否，前否后肯”。二、了解used to构成的反意疑问句有两种（didn’t和usedn’t或usen’t）。
三、知道there构成的反意疑问句可由there直接构成，而不用it，所以选择C。7．B。can作为情态动词，它有一特殊用法，即：表示“有时会”= is sometimes 等一般情况。句意为：我们家住山顶，所以有时夏天风会很大。
8．B。shall用于第一、三人称疑问句时表示征求对方意见或指示。二、三人称表示说话人的命令、警告、允诺或威胁。
9．B。should意为“竟然”。should have done意为“竟然做了某事”。句意：我很惊讶，他竟然比赛输了。
10．A。had better是一特殊情态动词，它可以写成better，但无论是had better，还是better，其反意疑问句均由had引导。此外，还遵循“前肯后否”的原则。故选A。
11．A。此题考查情态动词ought to的特殊用法。它有表示“道德法律上的必须”之意。此句意为：“先生，您不能在这捕鹿，它们是国家保护动物”。can’t虽有“不能、不准”之意，但它不表示“法律上的不准，道义上的不能”之意，所以排除B。oughtn’t to相当于shouldn’t，但前者语气更为强烈。won’t表示“不愿、不能”，故排除。needn’t表“不必”，不符合题意。因此排除D。
12．A。can不能用于肯定句中表示推测；will表将来或意愿；should have done 意为“本应该……却未……”。句子表达的是一种对过去的猜测，但可能性不大。13．D。因对话是对过去事情的推测，所以不能选择A和B。从上句意义可知：
已坐了5个人的小车里再挤一个人一定不是舒服的旅行。答案为D。14．C。表示对未来可能出现的一种事实的推测，但不是很肯定。
15．D。谚语：“三人行，必有我师”。
16．A。本句意为“你能把那本我给你打电话时你提到的那本书借给我吗?”，用过去进行时表示对过去情节，场面的描述。
17．A。shall用于第一、第三人称表示请求允许，“让这个新来者试试好吗?”18．C。“我们本不该觉得这么累，我们只是参加了个聚会嘛”。have been to是已发生的事实，“本不该”也是已经存在的状况。shouldn’t have felt是对已存在的情况的虚拟。shouldn’t“(照常理)本不应该”。
19．B。shall用于第三人称表示征求许可。
20．B。第一句表示要“拜访Mr Richardson”；第二个人因此说我给他发个电子邮件“so (that) he may know”以便于他可以知道“什么时候接我们(期待我们到达)”故选B。
21．C。说话人在主句中使用了过去时态，因此，用来修饰从句的让步状语从句就必定是过去时态，这样，就排除了A、D项。should have done表示的是责备对方应该做某事而没有做，上句已经说明是走路而不是乘车，这样，就把可would go排除了。
22．A。cannot / can not / never … too / enough是一固定搭配，表示“越……越好”、“再……也不过分”。
23．C。should have done意为“本该干某事”。must have done 意为“准是做了”，不合题意。
24．A。couldn’t have done表示对过去情况的推测，“过去不大可能发生某事”。B项表示本不必做某事而实际上却已做了。C项形式错。D项含有责备批评意味，用于肯定句表示在某时间之前应该完成的事而没完成，用于否定句表示本不该做的事却做了。
25．C。根据句意：研究结果表明我们每天都会有2小时在做梦，不管我们白天做了什么。空格处应是表示对白天所做的事情的不肯定的推测。故选C。25．D。对现在所发生的事情的否定推测。
27．C。对过去发生的事情的否定推测。句意：—有人告诉我John今天上午又
出车祸了。—我不相信。他不可能那么粗心的。couldn’t have done意为“不可能做了……”。
28．B。句意：就是玩电脑游戏浪费了这个小男孩很多时间，其实他本应当把时间化在学业上的。ought to have done含有责备批评之意。故答案为B。29．C。根据此对话的语境，此空应是“你不可能知道，你当时正在国外读书呢”。you couldn’t have是you couldn’t have known we were friends的简略形式。该句式表示对过去有把握的否定推测。A项表示“也许知道”；B项表示“没必要知道”；D项表示“一定知道”。均不合题意。
30．C。前句是must have +过去分词时，若前句强调对过去情况的推测（一般都有过去时间状语），疑问部分的谓语动词用didn’t + 主语；若前句强调动作的完成，疑问部分的谓语动词用haven’t/ hasn’t +主语。根据题意，by the end of last month（到上月底为止），表示动作的完成。
31．C。can’t have done 表示对过去发生的行为不肯定。
32．D。考查情态动词的用法。can表“可以”，needn’t表“不必”。
33．D。句意：—她一定回到峡谷了。—不，不可能的。峡谷口找不到的。must have done的否定形式应是：can’t / couldn’t have done。
34．C。could have done意为“本来可以干某事”。
35．B。can’t have done表示对过去发生的行为的不肯定推测，意为“不可能干过某事”。
36．C。因为题目中由ought to，其表示过去动作的have在省略回答时不能舍弃。
37．D。might表示把握性小的判断，意为“也许”。从第二句话说话人要打电话查明，说明他不太清楚，所以用might。must表示有把握的推测．would和will表示推测时把握性仅决于must，意为“大概是……”。
38．D。A、B项因为第二空有并列连词，排除，C项第一空意思不对，排除；D项第一空表示“将来”的时间，第二空表示“转折”的含义。
39．A。shall用于第二、三人称。表示意图、意志、允诺、命令、命运或必然结果等，此处表示必然结果“她必须先去”。因为后面的从句说明了这种情况：“不管她是不是喜欢”，说明不由她个人决定。选项C表达不了这种意思。
40．A。should用于情态动词时可以表示“应该会……，一定……吧”。外国人善于做饺子，他们做饺子的情形一定会很有趣。may只是用于不太确定的推测，不足以表达文中的含义can通常情况下用于疑问句和否定句的推测；will表示将来的情况，而外国人做饺子有趣是一般情况下都会发生的事情。
41．C。应该注意上句时态是was，“当时门是开着的”。对过去的事件的否定推测用can not have been。
42．A。must表猜测时，只用于肯定句，而依据They must be somewhere可以判断答案。
43．C。mustn’t表示“禁止”“绝对不可能”，must表示猜测时，语气比may更加肯定。
44．D。ought to可以表示“根据外界的事实或条件做出判断”。can用于推测时常出现在否定句或疑问句中；may和might表示推测的不确定性。
45．D。根据语境，表示有把握的推测，“一定开始上课了”。must + 动词原形是对现在情况推测，must + have done表示对过去或已发生的情况的推测，may 表示把握性较小的推测。should表示预期，“应该会，一定会……吧”。46．A。would在这里的意思是“过去经常做某事”，符合语境，而B、C、D均无法使此句合理通顺。
47．C。should do的意思是“应该会……，—定……吧”，表示“预期”。48．C。根据语境，是对过去了的事情表示感谢。情态动词+ have done，表示过去。would意为“会，将”。
49．C。根据上下文，他们还没到这里的原因有可能是他们错过了汽车。错过汽车，没按时到一定是一个过去的动作，所以排除B、D项。can表示推测时常用于否定句和疑问句中。故C项是最佳答案。
50．C。may在此表示对将来的事实进行猜测。
51．B。该句表示对过去的事实进行猜测，用C、D项含义均不对。
52．D。问句中使用了过去时态，说明动作发生在“过去”；A、C项表示“现在”或者“将来”，排除。must不能和完成时一起用于疑问句，排除。这里should have done表示应该做某事而没有做，带有批评的口气。
53．A。此句应该用情态动词的省略形式，根据意思应用should。
54．C。wouldn’t表“不会”，一般用在过去时态；mustn’t表“一定不可以，千万不要”；shouldn’t表“应该不会”；needn’t表“没必要”。
55．C。首先排除B、D，B表示一种委婉，此时没必要，D项must语气不对。shall表单纯的将来，而will更好，表示我们将来愿意去。
56．B。“would”表示一种经常性动作，相当于“used to do”，但意思不完全相同。57．B。do这一助动词既指代了上文的“keep quiet in class”，又表强调，由于此题设置的是通常状态下，故选do，如果用来指过去的动作，则用did。58．C。would表“会”，should为“应该”，题中could和was able to表“能够”，符合题意。could为天生所能达到的，而was able to是经努力所能达到的，因此符合“省钱”语境。
59．D。译为：—看！约翰睡着了。—他一定是昨天晚上熬夜熬得大晚了。must 表示有根据的，较为肯定的推测。
60．D。从by now看应该是完成时态，排除B、C，从It usually takes four days 看，应是ought to“应该”，选D。
61．A。would表示过去某一段时间一直重复做的事情。
62．A。have to表示由于客观原因“不得不”，不能分开；ought to等于should，表示“应该”，do在此句中不能用，不能代替have to。
63．B。can’t have done表示对过去情况的一种比较有把握的判断。根据下半句：因为一会儿时间前我看见他正和校长谈话可判断：他不可能去了上海。64．D。can’t have done表示对过去的行为动作的否定，从上文来看“根据我所了解的情况，他们不可能这个假期很快乐”，A项表示“可能已经，该已”，B 项表示“过去该做而未做”，C项表示“本来不需做而实际上做了”。
65．A。can’t have done表示对过去事实的推测，意为“肯定没有……”。should not have done表示不该做而做了；need not have done表示没必要做而做了；只有must have done，无mustn’t have done形式，mustn’t表禁止。根据句意“不像是Jack不友好”，下句是表推测的，“所以肯定是当你喊他时他没看到你”。66．C。此题考查的是情态动词的用法。can是“可以、可能、能够”的意思；must则是“必须”；might表推测。联系上下文意，均不可选。而ought to意为“应该”，有更大的事实依据。根据实际情况，the weather office’s computers也确实
更准确些，故选C。
67．A。对话中第一句是对过去一件事情的陈述，因此下一句中对过去某种情况的推测应该用must have done句型，故选A。
68．C。前一个空填would，意为“(在过去某个时间)她想要通过考试”，后一空用knows，是在陈述一个事实，意为“但她知道的太少了”。
69．C。shouldn’t have come意为“本不应该来” ，暗含“她来过了” 的意思，与题意不符；needn’t have to come中need为情态动词，倾向于主观上的“必要”，与题中给出条件“We had changed our plan”不符；didn’t need to come中的need to do表示“(有责任、有义务)做某事”，符合题意。
70．B。should have done意为“本应该做某事(但实际上没做)”。
71．B。四个选项在句中都不错，只根据说话人语气，“已经买了三篮水果”因为不必再买了，说明她认为已经够了，是一种比较肯定的语气，而不是猜测语气。
72．B。在不确定问题答案之前，我们用不肯定的语气“may”或“might”表推测，又因为推测的动作已经发生，B项最正确，符合语境。
73．A。选项A表示“在某种意义上应该干……”；选项B、D均表示“过去的一种可能性”。根据题意，只能选A。
74．C。选项A表示允许，意为“可以”；选项B表示能力，意为“能够”；选项C表示主张，意为“偏偏，偏要”；选项D表示说话者的意图、命令或决心，意为“必须、一定”。故选C。又如：The car must broke down just as we were going on our holiday.
75．D。shall 用于陈述句第二、第三人称时，表示说话人的意图、允诺、警告、命令、决心等，意思是“必须、应该、可以”。句意：据宣布，考生在收卷前必须坐在自己的座位上。
情态动词专题(含答案)经典 一、初中英语情态动词 1．——Do you have any plans for this summer vacation? ——I'm not sure. I ___ take a trip to Taiwan. A. must B. need C. may D. should 【答案】C 【解析】【分析】句意:一今天暑假你有什么计划吗?一我还不确定。我可能去台湾去旅行。A.必须，一定;B.需要，必要;C.可能;D.应该。根据句中I'm not sure可知，说话人还没有确定的计划，所以这只是一个可能，应选C。 2．—Where is Monica? I can't find her anywhere. —She be in the library. She loves reading books when she is free. A. must B. need C. can't 【答案】 A 【解析】【分析】句意：——莫妮卡在哪？我到处都找不到她。——她肯定在图书馆，她喜欢空闲时看书。A肯定，肯定句中表示推测，B需要，C不可能，否定句中表示推测，根据 She loves reading books when she is free ，可知是肯定句表示推测，故选A。 【点评】考查情态动词，注意情态动词表推测的用法。 3．You be tired after walking for such a long time. Sit down and have a rest. A. can B. can't C. mustn't D. must 【答案】 D 【解析】【分析】句意：走了这么长时间你一定很累了。坐下休息一下吧。can能，能够，can't不能，对事物进行否定推测；mustn't一定不是，禁止，must一定，对事物进行肯定推测，根据after walking for such a long time，可以肯定你一定很累，所以是进行肯定推测，情态动词使用must，故选D。 【点评】此题考查情态动词。弄清每个情态动词的使用规则，根据句意确定所使用的情态动词。 4．—Where is Mom now? —I'm not sure. She _________ be in the kitchen. A. shall B. may C. need D. must 【答案】 B 【解析】【分析】句意：—妈妈现在在哪里？—我不确定，她也许在厨房。A. shall 将要； B. may 可以，可能； C. need 需要； D. must必须，一定；根据I'm not sure可知是不确定；故选B。
最新情态动词专项练习题及答案详解 一、单项选择情态动词 1．—Daddy, would you please buy me an iPhoneX? —If you can pass this midterm examination, you __________ have one as a reward. A．must B．need C．would D．shall 【答案】D 【解析】 【详解】 考查情态动词。句意：爸爸，你可以给我买部iPhone X吗？--如果你通过考试，你就会得到一部作为奖励。A. must一定；B. need必要；C. would将，会；D. shall会。根据语境可知，这句话是父亲对子女的允诺，故选D。 【点睛】 shall的用法。 1. shall作为助动词，一般用于第一人称Ⅰ和We，表示一个将来的动作，构成将来时态。shall后面接动词原形。例如： （1）I shall think it over and Let you know my idea.我将考虑一下此事，然后告诉你我的想法。 （2）We shall have a good time in the park.我们在公园里会玩得很高兴的。 2. shall用于第一人称，表示征求对方的意愿。如：What shall we do this evening? 3. 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? 4. 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） 比如本题，根据语境可知，这句话是父亲对子女的允诺，故选D。 2．Paul did a great job in the speech contest. He many times last week. A．need have practised B．might practise C．must have practised D．could practise 【答案】C 【解析】 【详解】 考查情态动词。句意：保罗在演讲比赛中表现得很好。他上星期一定练习了很多次。must have done是对过去发生的动作最有把握的猜测，意思是“一定”。故C选项正确。 3．Ann said whenever her father was unhappy he ________ go out and buy something, usually something large and useless. A．should B．could
人教版英语英语情态动词专项练习含答案百度文库 一、初中英语情态动词 1．—Mum, I play football this afternoon? —Sure, but you finish your homework first. A. may; could B. can; must C. can; mustn't D. may; can't 【答案】 B 【解析】【分析】句意：－妈妈，今天下午我能踢足球吗？－当然，但是你必须先完成作业。前句提请求，can,may都可以；后句，由sure可知后句用肯定回答。Could表示一种委婉的语气；must表示主观愿望：必须。妈妈要求孩子“必须”先完成作业。故选B。 【点评】考查情态动词辨析，may表示请求时候的回答用语。 2．—How amazing this robot is! —Wow, it has video cameras in its eyes, so it “see” and interact with people. A. may B. can C. must D. should 【答案】 B 【解析】【分析】句意：—这个机器人多么惊人啊！—哇，在它的眼睛里有摄像机，因此它能看见和人打交道。A. may 可以，可能；表示许可，B. can 能；表示能力，C. must 必须；D. should应该；根据it has video cameras in its eyes,可知是有能力看见，故选B。 【点评】考查情态动词辨析。熟记情态动词的含义和用法。 3．—Shall we meet at the station at 9 a.m.? —In fact we ______. The train ______until 11a.m. A. needn't; will leave B. needn't; won't leave C. mustn't; leaves D. mustn't; doesn't leave 【答案】 B 【解析】【分析】句意：—我们上午9点在车站见面好吗？—事实上我们不需要。火车直到11点才离开。needn't情态动词，不需要，没必要；mustn't情态动词，不允许，语气强烈，本题含义只是“不需要”,并没有“禁止、不许”这样强烈的语义。not...until...，意为“直到...才...”，表示将来发生的事情，所以使用一般将来时态的否定形式won't。故选：B。 【点评】考查情态动词辨析，固定搭配not...until...。一般将来时态。 4．—Where is Mom now? —I'm not sure. She _________ be in the kitchen. A. shall B. may C. need D. must 【答案】 B 【解析】【分析】句意：—妈妈现在在哪里？—我不确定，她也许在厨房。A. shall 将要； B. may 可以，可能； C. need 需要； D. must必须，一定；根据I'm not sure可知是不确定；故选B。 【点评】此题考查情态动词表推测的用法。
英语情态动词专项练习题及答案含答案解析 一、初中英语情态动词 1．— _______ you play tennis? —Yes, and I'm a good player. A. Can B. May C. Must D. Should 【答案】 A 【解析】【分析】句意：——你会打网球吗？——会，我是一名优秀的网球员。Can能，表示能力；may可以，表示允许；must必须，表示要求；should应该，表示建议；结合句意，此处表示能力，故用情态动词can，故选A。 【点评】此题考查情态动词的用法。 2．All passengers ______ go through safety check before they take a plane. A. can B. may C. must D. could 【答案】 C 【解析】【分析】句意：所有乘客登机前必须接受安全检查。A. can能够，表示能力；B. may可以，表示许可；C. must必须；D. could可能，可以。登机前必须安检。故选C。【点评】情态动词词义辨析。以及can、may、must、could四个词的词义和用法。 3．You be tired after walking for such a long time. Sit down and have a rest. A. can B. can't C. mustn't D. must 【答案】 D 【解析】【分析】句意：走了这么长时间你一定很累了。坐下休息一下吧。can能，能够，can't不能，对事物进行否定推测；mustn't一定不是，禁止，must一定，对事物进行肯定推测，根据after walking for such a long time，可以肯定你一定很累，所以是进行肯定推测，情态动词使用must，故选D。 【点评】此题考查情态动词。弄清每个情态动词的使用规则，根据句意确定所使用的情态动词。 4．—Where is Mom now? —I'm not sure. She _________ be in the kitchen. A. shall B. may C. need D. must 【答案】 B 【解析】【分析】句意：—妈妈现在在哪里？—我不确定，她也许在厨房。A. shall 将要； B. may 可以，可能； C. need 需要； D. must必须，一定；根据I'm not sure可知是不确定；故选B。 【点评】此题考查情态动词表推测的用法。 5．—Who it be that is knocking at the door? —It be father, but I'm not sure.
情态动词归纳及专项练习题 一、单项选择情态动词 1．If we had paid enough attention to the issue of the heavily-overloaded vehicles, the tragedy of the collapse of an overpass in Wuxi _____ avoided. A．should B．could be C．should have been D．could have been 【答案】D 【解析】 【详解】 考查情态动词用法。句意：如果我们对超载车辆问题给予足够的重视，就可以避免无锡立交桥垮塌的悲剧。本句为“情态动词+have done”结构，结合句意表示“本来可以；本来能够”应用could have done结构，且主语与谓语动词avoid构成被动关系，故应用be done形式。故选D。 【点睛】 情态动词+have done的结构和用法有以下几种： 一、must have done sth.“一定做了某事”。表示对过去事情的较有把握的推测，这时只能用在肯定句中，“肯定/必须已经干过……”，在否定句和疑问句中用can’t或co uldn’t或can/ could，例如： 1.From what you said, she must have told you all about it. 从你的话看，她一定告诉了你所有的事情。 二、can/could have done sth.本来能够做某事，而实际上未做； 1.But we could have done it all so much better. 但是，我们本可以把这一切做得更好。 三、can't/couldn't have done sth.不可能做过某事； 1. We could't have done it without you. 没有你我们办不成这事。 四、ought to/should have done sth.过去本应该做某事而实际上并没有做。 You should have done it when you first saw them blooming this spring. 你应该在今年春天第一次看到它们盛开的时候就挖一些的。 2.Even if it’s something you should have done earlier in the wee k or missed a detail on. 甚至你在一个星期前的就提早完成了一件事或者忽略了一个小细节。 2．—I don’t really like Janes. Why did you invite him? —Don’t worry. He come. He said he was’t certain what his plans were. A．must not B．need not C．would not D．might not 【答案】D 【解析】 考察情态动词，题干中的he wasn’t certain说明他可能不来，可能来，因此使用不完全否定，might not。 3．--- Oh, my God! I just missed the last bus back home.
人教版英语英语情态动词专项练习经典含答案 一、初中英语情态动词 1．—Must I clean the classroom now? —No, you_______. A. mustn't B. can't C. needn't 【答案】 C 【解析】【分析】句意：--我必须现在把教室打扫干净吗？--不，你不必。must I do …?的否定回答是No, you needn't 或者 No , you don't have to 。根据是否定回答，故选C。 2．—Where is Monica? I can't find her anywhere. —She be in the library. She loves reading books when she is free. A. must B. need C. can't 【答案】 A 【解析】【分析】句意：——莫妮卡在哪？我到处都找不到她。——她肯定在图书馆，她喜欢空闲时看书。A肯定，肯定句中表示推测，B需要，C不可能，否定句中表示推测，根据 She loves reading books when she is free ，可知是肯定句表示推测，故选A。 【点评】考查情态动词，注意情态动词表推测的用法。 3．Please don't make so much noise. I ________ hear the speaker very well. A. needn't B. can't C. shouldn't D. mustn't 【答案】 B 【解析】【分析】句意：请不要发出那么多噪音。我不能很好地听清楚发言者的话。needn't不必；can't不能；shouldn't不应该；mustn't禁止。根据前半句的Please don't make so much noise.可知别人发出了太多噪音，所以他无法听见演讲者的话，故用情态动词can't。故选B。 【点评】考查情态动词，结合句意和词义做出判断。 4．A hard-working man ______ become a great scientist, but a great scientist _______ be a hard-working man. A. can't; can B. may not; must C. can't; must D. may not; can 【答案】 B 【解析】【分析】句意：一个勤奋的人可能不会成为一位伟大的科学家，但是一位伟大的科学家一定是一个勤奋的人。can't不可能，不会；can可能，能，会；may not 可能不；must 必须，一定；结合句意，可知，第一个空为“可能不”，第二个空为“一定”，故答案为B。
【英语】高三英语情态动词专项训练及答案及解析 一、单项选择情态动词 1．It wasn’t right to me that such near neighbors not know one another. A．could B．would C．should D．might 【答案】C 【解析】 【详解】 考查情态动词。句意：对我来说，很不正常，如此近的邻居居然不认识。A. could可能，能够；B. would将；C. should竟然；D. might可能，也许。should 作为情态动词，可以用来表示意外、惊喜或者在说话人看来是不可思议的，常常译为"竟会"、"居然"，住的这么近的邻居居然不认识。表示意外，所以答案选C。 【点睛】 should的用法 1、should 作为情态动词,通常用来表示现在或将来的责任或义务,译作“应该”、“应当”,这时它可以和 ought to, be supposed to 互换使用.例如：You should （= ought to ） tell your mother about it at once. 2、should 作为情态动词,可以用在条件状语从句中,表示语气较强的假设,译作“万一”、“竟然”,这时也可将 should 置于从句之首,即将 should 放在主语前面,而省略从属连词 if。例如：If you should fail to come, ask Mrs Chen to work in your place. （= Should you fail to come, ask Mrs Chen to work in your place. ） 3、should 作为情态动词,可以表示谦逊、客气、委婉之意,译为“可……”、“倒……”。例如：I should say that it would be better to try it again. 4、should 作为情态动词,可以用来表示意外、惊喜或者在说话人看来是不可思议的.尤其在以 why, who, how 等开头的修辞疑问句或某些感叹句中常常译为“竟会”、“居然”。例如：How should I know it ? 我怎么会知道这件事? 5、should 作为情态动词,可以用来表示有较大可能实现的猜测、推论,通常译为“可能”、“总该……吧”,相当于 be expected to 。例如：They should be home by now, I think. 我想现在他们总该到家了吧。 6、should 作为情态动词,用在由 so that, for fear that, lest 引导的目的状语从句和 in case （that）引导的条件状语从句中,有“能够”、“可能”、“会”之意。例如：They got up early so that they should （= could/ might） catch the first bus in time. 7、should 作为情态动词,可以用于下列虚拟语气句中： (1）用在表示与将来事实相反的条件状语从句中,构成“ If …… should （do sth）……, …… would/ could/ might （do sth.）…… ”句式。 (2) 用在 suggest （propose）, arrange, plan, decide, advise, order, demand, request, desire, insist 等表示“建议”、“要求”、“命令”、“决定”、“安排”、“计划”、“主张”的动词后面接的宾语从句中。这里的 should 也可以省略。 本句中should 作为情态动词，可以用来表示意外、惊喜或者在说话人看来是不可思议的，
【英语】情态动词专项练习综合经典1 一、初中英语情态动词 1．——Do you have any plans for this summer vacation? ——I'm not sure. I ___ take a trip to Taiwan. A. must B. need C. may D. should 【答案】C 【解析】【分析】句意:一今天暑假你有什么计划吗?一我还不确定。我可能去台湾去旅行。A.必须，一定;B.需要，必要;C.可能;D.应该。根据句中I'm not sure可知，说话人还没有确定的计划，所以这只是一个可能，应选C。 2．—Where is Monica? I can't find her anywhere. —She be in the library. She loves reading books when she is free. A. must B. need C. can't 【答案】 A 【解析】【分析】句意：——莫妮卡在哪？我到处都找不到她。——她肯定在图书馆，她喜欢空闲时看书。A肯定，肯定句中表示推测，B需要，C不可能，否定句中表示推测，根据 She loves reading books when she is free ，可知是肯定句表示推测，故选A。 【点评】考查情态动词，注意情态动词表推测的用法。 3．A hard-working man ______ become a great scientist, but a great scientist _______ be a hard-working man. A. can't; can B. may not; must C. can't; must D. may not; can 【答案】 B 【解析】【分析】句意：一个勤奋的人可能不会成为一位伟大的科学家，但是一位伟大的科学家一定是一个勤奋的人。can't不可能，不会；can可能，能，会；may not 可能不；must 必须，一定；结合句意，可知，第一个空为“可能不”，第二个空为“一定”，故答案为B。 【点评】考查情态动词。掌握情态动词表推测时的意义和用法。 4．—Shall we meet at the station at 9 a.m.? —In fact we ______. The train ______until 11a.m. A. needn't; will leave B. needn't; won't leave C. mustn't; leaves D. mustn't; doesn't leave 【答案】 B 【解析】【分析】句意：—我们上午9点在车站见面好吗？—事实上我们不需要。火车直到11点才离开。needn't情态动词，不需要，没必要；mustn't情态动词，不允许，语气强
最新高一情态动词专项练习题 一、单项选择情态动词 1．I use a clock to wake me up because at six o'clock each morning the train comes by my house. A．couldn't B．mustn't C．shouldn't D．needn't 【答案】D 【解析】 试题分析：考查情态动词辨析。A不可能；B禁止，千万不能；C不应该；D不需要；句意：我不需要使用闹钟叫醒我，因为每天早上六点都有一列火车经过我的家旁边。根据句意可知我不需要使用闹钟。故D正确。 考点：考查情态动词词义辨析 2．Mr. Baker, some students want to see you. ______ they wait here or outside? A．May B．Should C．Shall D．Will 【答案】C 【解析】 【详解】 考查Shall的用法。句意：贝克先生，有些学生想见你。他们是在这里等还是在外面 等?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。故选C。 【点睛】 Shall的用法 Shall作为助动词，一般用于第一人称Ⅰ和We，表示一个将来的动作，构成将来时态。Shall后面接动词原形。例如： （1）I shall think it over and Let you know my idea.我将考虑一下此事，然后告诉你我的想法。 （2）We shall have a good time in the park.我们在公园里会玩得很高兴的。常考的特殊用法 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） 3．--- Oh, my God! I just missed the last bus back home. --- That’s really bad. I’m sure you ______ it, but you just didn’t hurry up. A．had caught B．could have caught C．could catch D．can catch
情态动词 情态动词是一种本身有一定的词义，但要与动词原形及其被动语态一起使用，给谓语动词增添情态色彩，表示说话人对有关行为或事物的态度和看法，认为其可能、应该或必要等。情态动词后面加动词原形。 情态动词有四类： ①只做情态动词：must,can(could),may(might)…… ②可做情态动词又可做实义动词：need，will ③具有情态动词特征：have(had,has) to,used to，ought to ④情态动词表猜测：一肯一否三不定（must一肯，can not一否，may，might，could，三不定。） 注：mustn't代表强烈禁止 must表示主观，have to表示客观。 常用的有：can may could must have use . 情态动词无人称和数的变化，情态动词后面跟的动词须用原形，否定式构成是在情态动词后面加 "not"。个别情态动词有现在式和过去式两种形式，过去式用来表达更加客气，委婉的语气，时态性不强，可用于过去，现在或将来。情态动词属非及物动词，故没有被动语态。 情态动词表推测的用法小结 （一）情态动词表推测的三种句式 1．在肯定句中一般用must （一定），can,could（可能），might /may（也许，或许）。 e.g:(1)He must/can/may,might know the answer to this question. 他一定/可能/也许知道这个问题的答案。 (2)It is cold in the room. They must have turned off the heating. 屋里很冷，他们肯定把暖气关了。 2．否定句中用can’t / couldn’t（不可能），may not/might not（可能不）。
最新情态动词专项练习及答案详解 一、单项选择情态动词 1．Look! There are so many mistakes in your composition. You ________ have fixed full attention on it. A．can B．should C．need D．might 【答案】B 【解析】 【详解】 考查情态动词。句意：看！你的作文里有那么多的错误。你本应该把所有的注意力都集中在它上面的。表示“本应该做但实际上没有做”应该用should have done结构，can have done 表示可能；need表示需要；might have done表示可能做过某事；故选B。 2．Keep up your spirits even if you _____ fail hundreds of times. A．must B．need C．may D．should 【答案】C 【解析】 【详解】 考查情态动词。A. must必须；B. need需要；C. may可能，或许；D. should应该。句意：即使失败了几百次，也要振作起来。此处表示一种不确定的推测，故选C。 3．Using AI， many companies are now conducting experiments that__________ possible just a few years ago． A．would have been B．might have been C．shouldn't have been D．couldn't have been 【答案】D 【解析】 【详解】 考查情态动词表推测。句意：很多公司现在使用人工智能进行试验，这在几年前是不可能的。根据“a few years ago”可知，此处表示“过去不可能”，应该用couldn’t have done，故D 项正确。 4．Mr. Baker, some students want to see you. ______ they wait here or outside? A．May B．Should C．Shall D．Will 【答案】C 【解析】 【详解】
情态动词专项练习 1. Jean have kept his promise. I wonder why he changed his idea. A. must B. should C. need D. would 解析：选B. “should have +过去分词” 表示“过去本来应该(但没能)做某事”； keep one’s promise 意为“信守诺言”。 2. Jane have come to the party, but she not find the exact time. A. could; could B. might; could C. should; could D. should; would 解析：选A.“ could have+过去分词表示过去本来应该(但没能)做某事”。 3. So many mistakes in your homework! You more careful. A. may be B. had to C. would be D. should have been 解析：选D. “You should have been more careful”. 意为：你本来应该更细心的。 4．Her brother be at home now, because he was seen playing basketball in the stadium just now. A. mustn’t B. needn’t C. can’t D. shouldn't 解析：选C. can’t be at home 意为：不可能在家。 5．---I can’t understand wh y our boss is late. ---He the early bus. A. could miss B. may have missed C. can have missed D. might miss 解析：选B. “may have+过去分词”表示对过去动作的判断，意为：可能做了某事。注意：can表示可能时，只能用于疑问句和反问句。 6. She didn't answer the phone, she ______ asleep. A. may be B. must be C. should have been D. must have been 解析：选D. 表示：对过去发生的事情的肯定推测。 7．The little girl’s eyes were red. She ______. A. may cry B. must cry C. must be cried D. must have been crying 解析：选D. 意为：她刚才肯定一直在哭。对过去某事正发生的推测。 8．He______ his supper now, for the dining hall is still closed. A. can’t be having B. needn’t be having C. mustn’t be having D. shouldn't be having 解析：选A. 对现在正在发生的事情的否定推测。 9．I parked my bike behind the building, but now it is gone. It ________ . A. may be stolen B. must be stolen C. must have been stolen D. must have stolen 解析：选C. 对过去发生的事情的肯定推测的被动式。 10. ______ Mr. Black_______go to work by ferry before the bridge was built? A. Did; used to B. Use; to C. Did; use to D. Does; use to 解析：选C. used to do的疑问式，可以是Used+主语+to do ?或Did +主语+use to do? 11. The hotel is only a stone’s throw away, you ______ take a bus. A. need not to B. not need to C. don't need D. need not 解析：选D. 说话人认为不必要乘车, need 为情态动词。 12. I am busy now, _______ my brother do it for you ? A. Will B. Shall C. Must D. May 解析：选B. 在疑问句中shall 用于第三人称，也表示征求意见。 13. ---You needn’t do it right now, need you? ---Yes I am afraid I ______ . A. need B. needn’t C. must D. mustn’t 解析：选C. Yes的意思是：不。意为：恐怕我必须现在就做。 14.My English-Chinese dictionary has disappeared . Who _____ have taken it? A. should B. must C. could D. would 解析：选C. could/can have done 用于否定推测和疑问推测。 15. ---The room is so dirty._______ we clean it? ----Of course.
最新英语情态动词专项训练 一、单项选择情态动词 1．--- Difficulties always go with me! --- Cheer up! If God closes door in front of you, there be a window opened for you. A．must B．would C．could D．can 【答案】A 【解析】 【详解】 考查情态动词辨析。句意：——困难总是伴随着我！——高兴点! 如果上帝在你面前关上了门，一定有一扇窗户为你打开。A. must必须；B. would将要；C. could能，会；D. can能，会。must表示对现在的状态推测时，意为“一定”，表示可能性很大的推测。符合语境。故选A。 【点睛】 1) must用在肯定句中表示较有把握的推测，意为"一定"。 2) must表对现在的状态或现在正发生的事情的推测时， must 后面通常接系动词be 的原形或行为动词的进行式。 3) must 表示对已发生的事情的推测时，must 要接完成式。 4) must表示对过去某时正发生的事情的推测，must 后面要接完成进行式。 5) 否定推测用can't。 本句中的。must表示对现在的状态推测时，意为一定，表示可能性很大的推测。符合第2点用法。 2．Using AI， many companies are now conducting experiments that__________ possible just a few years ago． A．would have been B．might have been C．shouldn't have been D．couldn't have been 【答案】D 【解析】 【详解】 考查情态动词表推测。句意：很多公司现在使用人工智能进行试验，这在几年前是不可能的。根据“a few years ago”可知，此处表示“过去不可能”，应该用couldn’t have done，故D 项正确。 3．-- Did Jim come? -- I don’t know. He _______ while I was out. A．might have come B．might come C．must have come D．should have come 【答案】A
情态动词 情态动词是一种本身有一定的词义，但要与动词原形及其被动语态一起使用，给谓语动词增添情态色彩，表示说话人对有关行为或事物的态度和看法，认为其可能、应该或必要等。情态动词后面加 动词原形。 情态动词有四类： ①只做情态动词：must,can(could),may(might)…… ②可做情态动词又可做实义动词：need，will ③具有情态动词特征：have(had,has) to,used to，ought to ④情态动词表猜测：一肯一否三不定（must一肯，can not一否，may，might，could，三不定。）注：mustn't代表强烈禁止 must表示主观，have to表示客观。 常用的有：can may could must have use . 情态动词无人称和数的变化，情态动词后面跟的动词须用原形，否定式构成是在情态动词后面加"not"。个别情态动词有现在式和过去式两种形式，过去式用来表达更加客气，委婉的语气，时态性 不强，可用于过去，现在或将来。情态动词属非及物动词，故没有被动语态。 情态动词表推测的用法小结 （一）情态动词表推测的三种句式 1．在肯定句中一般用must （一定），can,could（可能），might /may（也许，或许）。 e.g:(1)He must/can/may,might know the answer to this question. 他一定/可能/也许知道这个问题的答案。 (2)It is cold in the room. They must have turned off the heating. 屋里很冷，他们肯定把暖气关了。 2．否定句中用can’t / couldn’t（不可能），may not/might not（可能不）。 e.g:(1)It can’t/couldn’t be the headmaster. He has gone to America. 这不可能是校长，他去美国了。 (2)He may not/might not know the scientist. 他也许不认识那位科学家。 3．疑问句中用can/could （能……?）。 e.g:(1)．Could he have finished the task?
情态动词专项练习题及答案详解 一、单项选择情态动词 1．I use a clock to wake me up because at six o'clock each morning the train comes by my house. A．couldn't B．mustn't C．shouldn't D．needn't 【答案】D 【解析】 试题分析：考查情态动词辨析。A不可能；B禁止，千万不能；C不应该；D不需要；句意：我不需要使用闹钟叫醒我，因为每天早上六点都有一列火车经过我的家旁边。根据句意可知我不需要使用闹钟。故D正确。 考点：考查情态动词词义辨析 2．It ________ be the postman at the door. It's only six o'clock. A．mustn't B．can't C．won't D．needn't 【答案】B 【解析】 D[考查虚拟语气。句意：不可能是邮递员在门口，才六点钟呢。mustn't 禁止，不允许；can't 不可能；won't 不愿意，就是不，偏不；needn't 不需要。] 3．Ann said whenever her father was unhappy he ________ go out and buy something, usually something large and useless. A．should B．could C．would D．might 【答案】C 【解析】 【详解】 考查情态动词。句意：安说无论什么时候她父亲不高兴的时候，他就会出去买些东西，通常是一些又大又没用的东西。A. should应该；B. could能；C. would总是，愿意；D. might 可能。此处表示过去经常习惯做某事，故选C。 4．It is really cold and the ground is wet; it ________ have rained last night. A．might B．must C．can D．should 【答案】B 【解析】 【详解】 考查情态动词辨析。句意：天气很冷而且地面是湿的，昨晚一定下了雨。根据上文the