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情态动词 语法讲解.pdf

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y keep the books for two
weeks.
c. --- May I smoke here?
--- Yes, you may. / No, you may
not. / No, you mustn’t.学习必备 欢迎下载

2、表示可能性
a. He may be waiting for you at the
station.
b. They may have got lost.
Note:
表示可能性时, may 不用于疑问
句。在疑问句中表示“可能”时,
通常用“be likely to ” 或“Do you
think”这一结构。
3、用于让步状语从句中
a. However hard you may study, you
cannot master English in a month.
b. Don’t give up whatever difficulties
you may meet with.学习必备 欢迎下载

4、用于祈使句,表示祝愿。
a. May you succeed!
b. May we never forget each other!
5、might 常用于表示委婉的请求或
轻微的责备。
a. You might post this letter for me if
you are going near a post box.
b. You might have let me know
before!
6、用于某些习惯用法中
(1) may /might as well = had better
a. It’s getting darker and darker. You
may/might as well go home.
(2) may well + 动词原形,意思为学习必备 欢迎下载

“理所当然,有足够的理由”。
a. He has grown up tall. You may
well not recognize him.

三、must, have to
1、表示义务和强烈的劝告。意思
为“必须”、“一定要”。
a. You must finish your task ahead of
time.
b. You must talk to your daughter
about her future.
2、表示有把握的推测,意思为“一
定是”,“准是”。
a. I failed in the exam. You must学习必备 欢迎下载

think I am stupid.
He must be a college student,
isn’t he?
b. You look happy. You must be
having a good time.
c. He looks tired. He must have
stayed up late last night, didn’t he?
d. You speak English so fluently. You
must have learned it for many years,
haven’t you?
3、表示肯定性或难以避免,意思
为“必然会、”“肯定会”。
a. All men must die.
b. Don’t bet o horse races; you must
lose in the long run.
4、作“偏要”、“硬要”解。Evaluation Warning : The document was created with Spire.PDF .

学习必备 欢迎下载
Modal Verbs
情态动词有 can (could), may

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