摘要： 肯定的推测一般用must, should, may或could.其中.must的语气最强.译为“肯定 .“准是 .“想必是 ,should的语气次之.译为“很可能 .“应该 .指按常理推测,may.could的语气最弱.译为“也许 .“可能 . ①Helen go on the trip with us but she isn’t quite sure yet. A. shall B. must C. may D. can ②-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 ③I have lost one of my gloves. I it somewhere. A. must drop B. must have dropped C. must be dropping D. must have been dropped ④If I plan to do anything I wanted to ,I’d like to go to Tibet and travel through as much of it as possible. A. would B. could C. had to D. ought to 2. 否定推测分为两种情况: 1)语气不很肯定时.常用may not, might not或could not.译为“可能不 .“也许不 . You might just as well tell the manufacturer that male customers not like the design of the furniture. A. must B. shall C. may D. need 2)否定语气较强时.则用can’t.译为“根本不可能 .“想必不会 .表示惊异.怀疑的感情色彩. ①-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 ②- Isn’t that Ann’s husband over there? - No, it be him I’m sure he doesn’t wear glasses. A. can’t B. must not C. won’t D. may not 3. 疑问句中的推测.往往用can或could. Mr. Bush is on time for everything. How it be that he was late for the opening ceremony? A. can B. should C. may D. must 4. 对已发生事情的肯定推测常用“must, may, might等+完成式 ,否定推测常用“can, could, may, might等+完成式 . ①I 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 ②He have completed his work; otherwise, he wouldn’t be enjoying himself by seaside. A. should B. must C. wouldn’t D. can’t ③-Tom is never late for work. Why is be absent today? -Something to him. A. must happen B. should have happened C. could have happened D. must have happened ④ My sister met him at the Grand Theatre yesterday afternoon, so he have attended your lecture. A. couldn’t B. needn’t C. mustn’t D. shouldn’t

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