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美联英语怎么样:语法详解-to 的动词不定式

2015-02-12 17:00   类别:语法   来源:   责编:Simple

本期美联英语给大家带来语法详解-to 的动词不定式,欢迎阅读!

省to 的动词不定式

  

1) 情态动词 ( 除ought 外,ought to):

2) 使役动词 let, have, make:

3) 感官动词 see, watch, look at, notice , observe, hear, listen to, smell, feel, find 等后作宾补,省略to。

  

注意:在被动语态中则to 不能省掉。

I saw him dance.

=He was seen to dance.

The boss made them work the whole night.

=They were made to work the whole night.

4) would rather,had better:

5) Why…/why not…:

6) help 可带to,也可不带to, help sb (to) do sth:

7) but和except:but前是动词do时,后面出现的动词用不带to的动词不定式。

8) 由and, or和than连接的两个不定式,第二个to 可以省去:

9) 通常在discover, imagine, suppose, think, understand等词后,可以省去to be:

He is supposed (to be) nice. 他应该是个好人。

  

举例:

He wants to move to France and marry the girl.

He wants to do nothing but go out.

比较:He wants to do nothing but go out.

He wants to believe anything but to take the medicine.

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