内容正文:
米
米
情态动词
米
米
之1
01
情态动词是什么
情态动词:表示情感和态度的动词
情态动词没有人称和数量的变化
情态动词+动词原形
情态动词+be+done-被动语态
情态动词本意
fi
情态动饲
意思,用法
情态动饲
意思,用法
can/could
可以;能:会
need
需要
be able to
能够
must
必须
may/might
也许,可能
have to
不得不
shall
表示请求
used to
过去常常;
曾经
ought to/
应该
had better
should
('d better)
最好
will/would
表示请求,
建议
would rather
宁愿
dare
敢
mustn't
禁止;不准
1.can/could可以;能;会
can't/couldn't不可以;不能;不会
I can swim.
could是can的过去式
I could swim 5 years ago.
could表示委婉的语气
Could you help me with my English?
2.may/might也许;可能
They may win.
might是may的过去式
They might win.
may可以表示请求
May I borrow your bike?
3.must/haveto必须;不得不
I must go to work on time.
I have to go to work on time.
mustn't:禁止,不准
You mustn't swim in the river.
4.need
需要
He need do his work.
5.dare敢
How dare you!
He dare not try.
6.ought to/,should应该
We should be careful when we have a test.
He ought to go outside.
7.used to过去常常;曾经
You used to go to school by bus.
He used to be a shy boy