高考与情态动词表推测.doc

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 hasnt 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 cant 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 havent 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 cant/couldnt have rained last night, for the ground is still wet.b. Something must have gone wrong with my computer, for it doesnt work now.c. Why didnt you go to Mr. Yang? 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. Your father cant be an engineer, is he?b. He might have arrived in Xian yesterday, didnt he?c. He must have finished the project by now, hasnt he?4. should表推测时，表示确定或可能有的未来或期望。例如：a. Its nearly seven oclock. 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 dropped2. He _ have completed his work; otherwise, he wouldnt be enjoying himself by the seaside.A. should B. must C. wouldnt D. cant3. I _ have been more than six years old when the accident happened.A. shouldnt B. couldnt C. mustnt D. neednt4. 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. - Ive taken someone elses green sweater by mistake.-It _ Harrys. He always wears green. A. has to be B. will be C. mustnt be D. could be6. - Do you know where David is? I couldnt find him anywhere?- Well. He _ have gone farhis coats still here.A. shouldnt B. mustnt C. cant D. wouldnt7. - 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 happened8. Helen_ go on the trip with us, but she isnt sure yet.A. shall B. must C. may D. can9. - 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 through10. This cake is very sweet. You _ a lot of sugar in it.A. should B. could have put C. might put D. must have put11 - Isnt that Anns husband over there?-No, it _ be him- Im sure he doesnt wear glasses. A. cant B. mustnt C. wont D. may not12. You _ be tired- youve only been working for an hour! A. mustnt B. wont C. cant D. may not13. - 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. must14. -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. can15. Peter _ come with us tonight, but he isnt very sure yet. A. must B. may c. can D. will16. - There were already five people in the car, but they managed to take me as well.-It _ a comfortable journey. A. cant be B. shouldnt be C. mustnt have been D. couldnt have been17. Sorry Im late. I _ have turned off the alarm clock and gone back to sleep again. A. might B. should C. can D. will18. - Are you coming to Jeffs party? - Im not sure. I _ go to the concert instead. A. must B. would C. should D. might19.Jack _ yet, otherwise he would have telephoned me. A. mustnt have arrived B. shouldnt have arrivedC. cant have arrived D. neednt have arrived20. My sister met him at the Grand Theater yesterday afternoon, so he _ your lec