1. 肯定的推测一般用must, should, may(might)或could(不用can),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(might),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. (2005年安徽卷)

   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. (2005年广东卷)

   A. has to be    B. will be    C. mustn’t be     D. could be

   ③I have lost one of my gloves. I _______ it somewhere.(2005年北京春季卷)

   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. (2005年湖北卷)

   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. (2004年上海春季卷)

   A. must     B. shall   C. may       D. need

   2)否定语气较强时,则用cant,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.(2005年湖北卷)

   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. (2004年全国卷Ⅰ)

   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?(2001年上海春季卷)

   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.(2005年重庆卷)

   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. (2005年北京卷)

   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. (2005年江西卷)

   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.(2000年上海卷)

   A. couldn’t     B. needn’t   C. mustn’t    D. shouldn’t

80. He is a world-famous         (雕塑家).

第二节:对话填空(共10小题;每小题1分,满分10分)

A: Have you ever read some reports about UFOs?

B: Of course. I have a firm b    81     in UFOs. I’m   81.        

  always interested in the stories and aliens.

A: What are they like?

B: According to some w    82     , it is colorless    82.        

  and moves at an a    83     speed with little noise.  83.        

  Aliens are said to be white-skinned, strange-looking

  visitors from o   84     space.            84.        

A: I don’t quite agree with you d   85     to space   85.        

  exploration, most important planets have been examined,

  p   86     have been taken and samples have      86.        

  collected there, but no e   87     of life has     87.        

  been discovered.

B: So you mean UFOs don’t e   88     ? There are no   88.        

  aliens? How would you explain some people’s sudden

  d    89     ? Many people have reported seeing     89.        

  aliens.

A: It’s hard to say. We will still continue with

  scientific r   90     .                90.        

第三节: 完成句子:

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