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1、情态动词2【课堂精练】经典例题1. -Sorry, Professor Smith. I didnt finish the assignment yesterday. -Oh, you _ have done it as yesterday was the deadline.A. must B. mustnt C. should D. shouldnt2. It _ have been Tom that parked the car here, as he is the only one with a car.A. mayB. canC. mustD. should【Keys】1. C。mus
2、t have done 用来表示对已发生情况的猜测，意为“一定了”。mustnt have done 是错误的表达形式，故先排除。shouldnt have done 表示本不应该做某事而实际上做了，这与题意相反。句意是：史密斯先生，对不起，我昨天没有完成作业。哎呀，昨天是最终期限，你本应该做完的。此处表示过去应该做某事而实际上没做，这是对对方表示责备或遗憾，故用should have done 形式。2. C。此处may 可能，表示可能性最小的推测； must 一定，必须； can能，可能。表示理论上的可能性；should应该，表示情理之中的事情。句意：一定是Tom把车停在这了，因为只有他才
3、有车。根据句意表示可能性最大的推测，用must。故选B。Choose the best answer.1. - Guess what! I have got A for my term paper. - Great! You _ read widely and put a lot of work into it.A. mustB. shouldC. must haveD. should have2. Mr. White _ at 8:30 for the meeting , but he didnt show up. A. should have arrived B. should arriv
4、e C. should have had arrived D. should be arriving3. As you worked late yesterday, you _ have come this morning.A. maynt B. cant C. mustnt D. neednt4. I have lost one of my gloves. I _ it somewhere.A. must drop B. must have droppedC. must be dropping D. must be dropped5. I _ have been more than six
5、years old when the accident happened.A. shouldnt B. couldnt C. mustnt D. neednt6. We _ have proved great adventurers, but we have done the greatest march ever made in the past ten years.A. neednt B. may not C. shouldnt D. mustnt7. - I stayed at a hotel while in New York. - Oh, did you? You _ with Ba
6、rbara. A. could have stayed B. could stay C. must have stayed D. would stay8. - Why didnt you make me a telephone call yesterday? - Sorry, I _ , but I was too busy. A. ought to B. ought to have C. might have D. should have done 9. Dont be so anxious about that. Helen _ a note. A. may leave B. should
7、 leave C. might have left D. can have left 10. I went to see the film yesterday, but I _ at home, watching TV.A. had better have stayed B. ought to have stayed C. would rather have stayed D. could have stayed 【Keys】 1-10 CADAB BABCC【自测】1. - You didnt wait for Mr. Smith last night, did you? -No, but
8、we _. He didnt return home at all.A. should wait B. neednt have C. didnt need toD. couldnt have waited2. Harry _ have won the Physics competition easily yesterday, but he gave up.A. could B. might C. should D. must3. - May I speak to your manager Mr. Smith at six oclock tonight ? - Im sorry, Mr. Smi
9、th _ to a conference before then.A. will have goneB. had gone C. would have goneD. has gone4. - Tom took away our teachers cell phone without being permitted. - Really? I cant imagine that he _ have done such a thing.A. must B. may C. can D. should5. - Was it you that made the suggestion? - It _ hav
10、e been. I cant remember.A. need B. must C. should D. may6. The weather turned out to be fine yesterday. I _ the trouble to carry my umbrella with me.A. should have taken B. could have takenC. neednt have taken D. mustnt have taken7. He paid for a seat, when he _ have entered free.A. could B. wouldC.
11、 must D. need8. I didnt see her in the meeting room this morning. She _ at the meeting.A. mustnt have spokenB. mightnt have spokenC. cant have spoken D. shouldnt have spoken9. - Hi, is that Peter Brown?- Sorry. You _ the wrong number.A. must dial B. must have dialed C. should dial D. should have dia
12、led10. 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 doingB. must have been doingC. could have doneD. would have done【Keys】 1-10 CAADDCACBB【随堂检测】I. 选择1. Often, when he _ something useful, he wasted his time playing c
13、omputer games.A. should be doingB. must have doneC. should have been doing D. shall be doing 2. Jerry did not regret giving the comment but felt that he _ it differently.A. must have expressedB. may have expressedC. need have expressedD. could have expressed3. - Do you know where David is? I couldnt find him anywhere. -Well. He _ have gone far - his glasses are still here.A. cant B. mustnt C. shouldnt D. wouldnt4. Sara _ have completed his assignment, otherwise she
