初中情态动词表推测的用法
（一）情态动词表推测的三种句式
1.在肯定句中一般用must (一定)，may（可能），might （也许，或许）。
If you have any idea where it might be, please call me.
2.否定句中用can’t / couldn’t(不可能), may not/might not(可能不)。
3.疑问句中用can/could (能„„?)。
（1）Could he have finished the task? 他可能把任务完成了吗？
（2）Can he be at home now? 他现在能在家吗？
注：以上三种句式中情态动词的语气按程度都是依次递减的。might, could并非may, can的过去式，而表示语气较为委婉或可能性较小。
（二）情态动词表推测的三种时态
1.对现在正在进行的动作推测时，用“情态动词 + be +doing”。
例：He must / may / might / could be listening to the radio now.
他一定/可能/也许正在听收音机。
2.对一般情况的推测，“情态动词 + 动词原形”。
（1）He can’t ( couldn’t ) / may ( might ) not be at home at this time.
这个时候他不可能/可能不在家。
（2）Mr. Bush is on time for everything，he can’t (couldn’t) be late for the meeting
布什先生一向准时，这次会议他不可能迟到。
3.对过去情况的推测，用“情态动词 + have +过去分词”。
（1）It must / may / might / could have rained last night .The ground is wet.
地湿了，昨晚肯定/可能/也许下雨了。
（2）The door was locked. He can ( could ) not / may ( might ) not have been at home . 门锁着，他不可能/可能不在家。
（3）Can / Could he have gotten the book？ 难道他找到书了吗？
情态动词表推测Exercise
1.---Whose is the notebook? ----It ________ be Tom’s. Look at his name on the cover!
A. can B. May C. Must D. Need
2. Look! The light is out in her room. She _____to bed already.
A. must go B. had to go C.must have gone D.has gone
3. ---Where is mom now? --- I am not sure. She ______ be in the kitchen.
A. shall B. may C. needn’t D. won’t
4. --- Is Tom in the classroom? --- No, he_______ be there. I saw him in the playground just now. A. may not B. can’t C. mustn’t D. would
5. My sister met him at the Grand Theater yesterday afternoon, so he ___ your lecture（演讲）.
A. couldn't have attended B. needn't have attended
C. mustn't have attended D. shouldn't have attended
6. You ______ be tired - you've only been working for an hour.
A. must not B. won' t C. can' t D. may not
7. - 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
8. Thank you so much for _________my mistakes in the homework.
A.giving out B.looking out C.pointing out D.picking up
9. He _____ have completed his work; otherwise（否则）, he wouldn’t be enjoying himself by the seaside. A. should B. must C. wouldn’t D. can’t
10. This cake is very sweet. You __________ a lot of sugar in it.
A．should put B．could have put C．might put D．must have put
11 .—Whose book is this? —It
A.can’t be B.can be C.mustn’t be D.must be
12. The book must . She’s the only one who’s studying French.
A. belong to Li Ying’s B.be Li Ying C. belong Li Ying’s D.belong to Li Ying
13. The bad weather can’t stop him to school on time.
A.go B.to go C.to going D.from going
14. —Where are you going this month? —We go to Jinan,but we are not sure.
A.needn’t B.must C.can’t D.might
15. Not only I but also Tom
A.is B.are C.am D.were
初中情态动词表推测的用法
（一）情态动词表推测的三种句式
1.在肯定句中一般用must (一定)，may（可能），might （也许，或许）。
If you have any idea where it might be, please call me.
2.否定句中用can’t / couldn’t(不可能), may not/might not(可能不)。
3.疑问句中用can/could (能„„?)。
（1）Could he have finished the task? 他可能把任务完成了吗？
（2）Can he be at home now? 他现在能在家吗？
注：以上三种句式中情态动词的语气按程度都是依次递减的。might, could并非may, can的过去式，而表示语气较为委婉或可能性较小。
（二）情态动词表推测的三种时态
1.对现在正在进行的动作推测时，用“情态动词 + be +doing”。
例：He must / may / might / could be listening to the radio now.
他一定/可能/也许正在听收音机。
2.对一般情况的推测，“情态动词 + 动词原形”。
（1）He can’t ( couldn’t ) / may ( might ) not be at home at this time.
这个时候他不可能/可能不在家。
（2）Mr. Bush is on time for everything，he can’t (couldn’t) be late for the meeting
布什先生一向准时，这次会议他不可能迟到。
3.对过去情况的推测，用“情态动词 + have +过去分词”。
（1）It must / may / might / could have rained last night .The ground is wet.
地湿了，昨晚肯定/可能/也许下雨了。
（2）The door was locked. He can ( could ) not / may ( might ) not have been at home . 门锁着，他不可能/可能不在家。
（3）Can / Could he have gotten the book？ 难道他找到书了吗？
情态动词表推测Exercise
1.---Whose is the notebook? ----It ________ be Tom’s. Look at his name on the cover!
A. can B. May C. Must D. Need
2. Look! The light is out in her room. She _____to bed already.
A. must go B. had to go C.must have gone D.has gone
3. ---Where is mom now? --- I am not sure. She ______ be in the kitchen.
A. shall B. may C. needn’t D. won’t
4. --- Is Tom in the classroom? --- No, he_______ be there. I saw him in the playground just now. A. may not B. can’t C. mustn’t D. would
5. My sister met him at the Grand Theater yesterday afternoon, so he ___ your lecture（演讲）.
A. couldn't have attended B. needn't have attended
C. mustn't have attended D. shouldn't have attended
6. You ______ be tired - you've only been working for an hour.
A. must not B. won' t C. can' t D. may not
7. - 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
8. Thank you so much for _________my mistakes in the homework.
A.giving out B.looking out C.pointing out D.picking up
9. He _____ have completed his work; otherwise（否则）, he wouldn’t be enjoying himself by the seaside. A. should B. must C. wouldn’t D. can’t
10. This cake is very sweet. You __________ a lot of sugar in it.
A．should put B．could have put C．might put D．must have put
11 .—Whose book is this? —It
A.can’t be B.can be C.mustn’t be D.must be
12. The book must . She’s the only one who’s studying French.
A. belong to Li Ying’s B.be Li Ying C. belong Li Ying’s D.belong to Li Ying
13. The bad weather can’t stop him to school on time.
A.go B.to go C.to going D.from going
14. —Where are you going this month? —We go to Jinan,but we are not sure.
A.needn’t B.must C.can’t D.might
15. Not only I but also Tom
A.is B.are C.am D.were