文档介绍：情态动词
modal verbs
常用的情态动词
can (could)
may(might)
shall(should)
will (would)
must(must)
dare (dared)
need (need)
have to
ought to
be able to
used to
had better
表示说话人的语气或情绪
情态动词有一定的意义,但不完整
不能单独作谓语动词,必须和动词原形一起构成谓语
无人称和数的变化
在情态动词的使用中, 我们要注意以下考点:
1. 表示能力、许可的情态动词的用法。
2. 表示否定的情态动词的用法。
3. shall 和 will 的多种意义的区别。
4. 情态动词短语的使用。
。
。
表示能力: can, could, be able to
*be able to 能用于各种时态。
can / could 只能表示现在或过去的能力。
*was / were able to : “设法做成某事”
相当于 managed to do sth.
eeded in doing sth.。
1. 表示能力、许可的情态动词的用法。
1. puter ______ think for itself; it must
be told what to do.
A. can’t B. couldn’t
C. may not D. might not
2. The fire spread through the hotel very quickly
but everyone ______ get out.
A. had to B. would
C. could D. was able to
A
D
3. They will ______ run this machine on their
own in three months.
can B. could C. may D. be able to
4. That big cinema ______ seat 2,000 people.
A. can B. should C. ought to D. is able to
D
A
表示许可: may / might, can / could
* might, could 比较委婉, 一般多用于疑问句.
* can, may 表达的语言比较随便.
* 在以could, might 表示征询对方意见
或表示请求时,回答应相应使用can, may.
5. — Could I borrow your dictionary?
— Yes, of course you _______.
A. might B. will C. can D. should
6. — Might I watch TV after supper?
— Yes, you ________.
A. may B. must C. might D. can
C
A
2. 表示否定的情态动词的用法:
部分情态动词的否定式是情态动词中的考点之一
mustn’t
needn’t
can’t
may not
shouldn’t
不准, 禁止
没必要( = don’t have to )
不能; 不可能
不可以; 可能不
不应该( = ought not to )