动词不定式的用法
1.用在感觉动词see,watch,notice,look at,hear,listen to,feel等后,作为宾语补足语,动词不定式不带to。如:
We often heard them sing.我们常常听到他们唱歌。
I saw her walk into the headmaster's office.我看见她走进了校长办公室。
2.用在使役动词make,let,have等后,作为宾语补足语,动词不定式不带to。如:
What makes you think I'm a farmer?你怎么认为我是一个农民?
Now let me hear you play.现在让我听你演奏。
I'll have my brother repair the radio for you.我要让我哥哥给你修理收音机。
注意:感觉动词see,hear,watch,notice,feel,look at,listen to和使役动词let,make,have等用于被动语态时,动词不定式作为主语补足语则要带to。如:
She was heard to sing in the next room.有人听到她在隔壁房间里唱歌。
3.用在 had better,had best(最好), would rather(宁愿)等结构后,词不定式不带to。如:
I'd better go and look for him.我最好现在就去找他。
You'd best get there before lunch.你最好午饭前到达那儿。
We would rather wait till tomorrow.我们宁愿等到明天。
4.两个或两个以上句法功能相同的动词不定式并列使用时,通常只是第一个动词不定式带to,后面的动词不定式则不带to。如:
So he decided to go and get some medicine for his cough.因此他决定去买点咳嗽药。
They began to read and write.他们开始读和写。
5.用在“Will you
please+动词不定式”一类表示邀请或命令的句型中,动词不定式不带to。如:
Will you please bring me some chicken?请你给我带点鸡肉来好吗?
Will you please ask her to call me tomorrow?请你让她明天给我打个电话好吗?
6.用在由“Why…”或“Why not…”一类表示建议的句型中,动词不定式不带to。如:
Why not join us?(=Why won't you join us?)为什么不加入到我们当中来呢?
Why spend so much money?为什么花这么多钱呢?
7.用在助动词will,shall,would,do和情态动词can,may,must,need,dare等后,动词不定式不带to。如:
I can sing in English.我会用英语唱。
I think it'll fit me quite well before long.我想这(件大衣) 很快就会合身的。
Unfair!How dare you
say that?不公平!你怎么敢这么说?
注意:ought to,have to中的to不能少。dare和need用作实义动词时,它后面的动词不定式要带to。如:
The girl doesn't dare to swim in the river.这女孩不敢在河里游泳。
8.用在动词help后作为宾语补足语,动词不定式既可以带to,也可以不带to。如:
Will you help me repair my bike?请你帮我修理一下自行车好吗?
Li Ping often helps me(to)do my lessons.李平经常帮助我做功课。
9.用在do anything(nothing,everything)but或except一类结构后,动词不定式不带to。如:
Can't you do anything but ask silly questions?难道你只会提些愚蠢的问题吗?
There is nothing to do except wait until the rain stops.除了静候雨停之外别无办法