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。must 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 arrive 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 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 Barbara. 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 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 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. Smith _ 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 _ have 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. 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 dialed10. 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 computer 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