高考与情态动词表推测

高考中情态动词表示判断/推测

历年高考都必考情态动词，且情态动词表示判断和推测的用法又是一大热点。表示判断和推测的情态动词can/could/may/might/ /must/should 的用法如下：

1．涉及具体某事是否会发生时，can/could用于疑问句中，表猜测“可能”；用于否定句中表示否定判断“不可能”；must表示肯定推测“一定, 必定”，只用于肯定句中；may/might+不定式表示可能性，语气更加不肯定。例如：

a.It is 11:00 p.m. now, but my son hasn’t come back home. Where can he be now?

b.--- Look, Mr. Wang is working so late again. The light in his office is still on now.

---No, it can’t be him. I know he has gone to Beijing for a meeting.

----Who can it be then?

--- It must be Mr. Li. He is taking Mr. Wang place these days.

c.----Will you go to the cinema tonight?

--- I haven’t decided yet. I might/may go to the tearoom instead.

注意：(1) 在肯定句中，can可以表示客观的（理论的）可能性，并不涉及具体某事是否会发生，这种用法常常可以说明人或事物的特征。例如：

Accidents can happen on such foggy days!( 客观的可能性)

(2) could和might并不一定与过去时间有关，而表示可能性弱于can和may.

2. 如果对过去的事进行推测/判断，can/could/may/might/ /must的后面则要用完成时形式。例如：

a.It can’t/couldn’t have rained last night, for the ground is still wet.

b.Something must have gone wrong with my computer, for it doesn’t work now.

c.Why didn’t you go to Mr. Y ang? He may/might have given you useful advice.

3. 这类推测/判断句在变反义疑问句时，要由时间状语来决定动词助，而不是用情态动词。例如：

a.Y our father can’t be an engineer, is he?

b.He might have arrived in Xi’an yesterday, didn’t he?

c.He must have finished the project by now, hasn’t he?

4.should表推测时，表示确定或可能有的未来或期望。例如：

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

b. --- When can I come for the photos? I need them tomorrow afternoon.

---- They should be ready by 12:00.

跟踪练习（历年高考题集选）

1.I have lost one of my gloves. I _____ it somewhere.

A.must drop

B. must have dropped

B.must be dropping D. must have been dropped

2.He ________ have completed his work; otherwise, he wouldn’t be enjoying himself by the seaside.

A. should

B. must

C. wouldn’t

D. can’t

3.I ______ have been more than six years old when the accident happened.

A. shouldn’t

B. couldn’t

C. mustn’t

D. needn’t

4. I was on the highway when this car went past followed by a police car. They _____at least 150 kilometers an hour.

A. should have been doing

B. must have been doing

C. could have done

D. would have done.

5.---- I’ve taken someone else’s green sweater by mistake.

----It ____ Harry’s. He always wears green.

A. has to be

B. will be

C. mustn’t be

D. could be

6.--- Do you know where David is? I couldn’t find him anywhere?

---- Well. He _____ have gone far—his coat’s still here.

A. shouldn’t

B. mustn’t

C. can’t

D. wouldn’t

7.--- Tom is never late for work. Why is he absent today?

--- Something _______ to him.

A. must happen

B. should have happened

C. could have happened

D. must have happened

8.Helen_____ go on the trip with us, but she isn’t sure yet.

A. shall

B. must

C. may

D. can

9.--- The woman biologist stayed in Africa studying wild animals for 13 years before she returned.

----Oh, dear! She _____ a lot of difficulties!

A. may go through

B. might go through

C. ought to have gone through

D. must have gone through

10.This cake is very sweet. Y ou ______ a lot of sugar in it.

A. should

B. could have put

C. might put

D. must have put

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. mustn’t

C. won’t

D. may not

12. Y ou _______ be tired--- you’ve only been working for an hour!

A. mustn’t

B. won’t

C. can’t

D. may not

13. --- 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

14. ----Excuse me. Is this the right way to the Summer Palace?

------ Sorry, I am not sure. But it ________be.

A. might

B. will

C. must

D. can

15. Peter ____ come with us tonight, but he isn’t very sure yet.

A. must

B. may c. can D. will

16. -- 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

17. 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

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

--- I’m not sure. I ____ go to the concert instead.

A. must

B. would

C. should

D. might

19.Jack ____ yet, otherwise he would have telephoned me.

A. mustn’t have arrived

B. shouldn’t have arrived

C. can’t have arrived

D. needn’t have arrived

20. My sister met him at the Grand Theater 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

答案：BBBBD CDCDD ACDAB AADCA

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