情态动词表推测

(共12张PPT)
possibility
Now
The past
The future
1.结构(structure)
对现在或将来的推测：
must/may/might/can’t+ do sth
对过去的推测：
must/may/might/can’t+ have done sth
It is possible that he will arrive tomorrow.
It is probable that………
It is likely that ……..
= Sb is likely to ………..
There is possibility that he will arrive tomorrow.
There is probability that…………….
There is likeliness that………….
=
2.意义:(Meaning)
He must arrive tomorrow.
= Perhaps/Maybe/Possibly/Probably, he will arrive tomorrow.
=
He may go abroad next week.
3. Practice
B. picture
C. play
A. guess
4. 问句
Can/ Could…
Must/ may/ might…
Can/could sb do…
Can/could sb have done sth
5. 可能性大小
Strong possibility
大
weak possibility
小
must 一定
can’t 不可能
might 可能
mightn’t 可能不
sure
not sure
Are you coming to Jeff's party --I'm not sure. I go to the concert instead.
A. must B. would
C. should D. might
6. Exercise
2.Mr. Bush is on time for everything. How _______ he be late for the opening ceremony
A.can B. should
C. may D. must
3.Show me your permit, please.
--Oh, it's not in my pocket.
It ________
A. might fall out
B. could fall out
C. should have fallen out
D. must have fallen out
6. -- What ever happened to Tom
--He lost.
A. may have got B. must be
C. should be D. can't be
4.This bottle is nearly empty. You a lot.
A. could have drunk B. must drink
C. ought to drink D. must have drunk
5.The room is in a terrible mess混乱; it cleaned.
A. can't have been B. shouldn't have been
C. mustn't have been D. might have been
7. Summary
1.结构:
must/can’t/may/might do/have done
2.意义：
perhaps/maybe/probably/possibly, ..
3.问句:
Can/could sb do/have done sth
4.可能性大小:
strong /weak