动词分类:
1)实义动词:有具体意思,可单独做谓语;
如:eat,read,love
2)情态动词:有具体意思,不可单独做谓语,要搭配实义动词一起使用;
如:can,could,may,might,shall,will...
3)助动词:无具体意思,不可单独做谓语。
如:be,do,have
情态动词不能单独做谓语:
例:
I play basketball.------------------正确
I can play basketball.------------正确
I can basketball.------------------错误
注意:
A:Who can play basketball?
B:I can.
这里的
I can
只是一种省略,完整表达是:I can play basketball.
十大情态动词:
can,could
may,might
shall,should
will,would
must,had better
补充:
与情态动词意义作用相当的短语:
can--be able to
will--be going to
should--ought to/be supposed to
must--have to/have go to
半情态动词:
(可作情态动词,又可作实义动词)
need,dare
详解:
1.can,could:
基本意思:可以,能;
could是can的过去式
例:
I can play basketball.
I could play basketball , but now I can't.
另外:
1)可以表示判断
--what caused his cancer?
--It can be smoking.
--It could be smoking.
2)有时用could是为了让语气更委婉:
Can you help me?
could you please help me?
2.may,might:
基本意思:可能,也许
I may be busy romorrow.
我明天可能会很忙
You might be late if you don't leave now.
你现在不出发的话可能迟到哦。
3.will/would:
基本意思:将,将要
would是will的过去式
will表将来:
I will go there tomorrow.
我明天将要去那。
would使语气更委婉:
Would you wait for me?
你愿意等我吗?(表请求)
Will you wait for me?
你会等我吗?(表询问)
Would you go with me?
你愿意和我走吗?
I wish you would stay.
我希望你留下。
4.should:
基本意思:应该,应当
You should work hard.
另外:
表推断:
Dinner should be ready now.
It should be true.
5.must:
基本意思:必须
You must word hard.
另外:
表推断:
Dinner must be ready now.
It must be true.
注意:
表推断时,可能性大小排序(从高到低)
must>should>could>may>might
作业:
翻译:
1.明天我回来。
I will come back tomorrow.
2.你能帮我吗?
Could you please help me?
3.我会踢足球。
I can play football.
4.你应该写作业。
You should do homework.
5.你必须道歉。
You must apologize.
6.我可能会失败,但我不放弃。
I may lose,but I never give up.
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