7.9省往to的动词不定式-动词不定式
7.9省往to的动词不定式
1）模样形状动词（除ought外）后。
2）使役动词 let, have, make后，感官动词 see, watch, look at,
notice , observe, hear, listen to, smell, feel, find等后。
留意：主动语态中不能省往 to。例如：
I saw him dance.我瞥见他跳舞。
=He was seen to dance.
The boss made them work the whole night.老板让他们整夜干活。
=They were made to work the whole night.
3） would rather，had better句型后
4） Why… / why no…句型后
5） help后可带to，也可不带to, help sb（to） do sth：
6） but和except后。but前是实义动词do时，背面出现的不定式不带to。
比较： He wants to do nothing but go out.他只想出往玩。
He wants to believe anything but to
take the medicine.除了吃这药，他什么都信。
7）由and, or和than连接的两个不定式，第二个to可以省往：
8）每每在discover, imagine, suppose, think等词后作宾补时，可以省往to be。例如：
He is supposed（to be） nice.他应该是个大好人。
典范例题
1） ---- I usually go there by train.
---- Why not ___ by boat for a change?
A. to try going B.trying to go C.to try
and go D.try going
谜底： D. why not背面接不带to的不定式，因此选D。
2） Paul doesn't have to be made ___. He always works
hard.
A. learn B. to learn C. learned D.
learning
谜底：B. make后接不带to的动词不定式，当其用于主动时，to不可省略。

关键字：带to的动词不定式 动词不定式的用法 动词不定式 英语动词不定式 动词不定式练习