动词不定式和ing形式

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动词不定式和ing形式

动词不定式具有名词、形容词和副词的特征,因此,在句中可以作主语、表语、宾语、宾语补足语、定语和状语。

1.常跟不定式作宾语的动词有want(想、要),love(喜欢),begin(开始),need(需),learn(学会),agree(同意),decide(决定),hope(希望),start(开始),refuse(拒绝)等。

I…m learning to skate on real ice. 我正在真正的冰上学滑冰。

[特别提醒]

(1)不定式短语作宾语时,如果还带有宾语补足语,通常用it作形式宾语,而不定式短语放在宾语补足语之后。

He found it very difficult to get to sleep. 他发现难以入睡。

(2)begin(开始),start(开始),like(喜欢),hate(憎恨),love(喜爱)可以接动词不定式或-ing形式作宾语,意思一般没有区别。但like后接-ing形式指经常性的动作; 接不定式,指一时间、一次性的动作。

I like having a twin sister. 我喜欢有个孪生姐妹。

I like to have a twin sister. 我现在想有个孪生姐妹。

(3)stop(停止),forget(忘记),remember(记得),try(试),go on(继续)等动词接不定式和-ing形式意义有区别。试比较:

stop to do sth.停下来去做另一件事

stop doing sth.停止(正在)做某事

forget to do sth.忘记去做某事(还未做)

forget doing sth.忘记做过某事(已经做)

remember to do sth.记住去做某事(还未做)

remember doing sth.记住曾做过某事

try to do sth.试图要做某事

try doing sth.试着做某事

go on to do sth.接着做另一件事(已做完一件)

go on doing sth.继续做(原来未做完的)某件事

She stopped crying and listened to the music. = She stopped to listen to the music. 她停止哭闹,听音乐了。

Don…t forget to tell him about it. = Remember to tell him about it. 别忘了(记住)告诉他这件事。

I…ll try not to be late again. 我将争取不再迟到。

She didn…t pull the door and tried pushing it. 她没有拉开门,便试着推一下。

2.动词不定式常用作目的状语。

He came to give us a talk yesterday. 他昨天来给我们作了个报告。

Mrs Brown went to see her doctor. 布朗夫人去看她的医生。

in order to作“为了”解,用作目的状语。

In order to pass the exam, he worked very hard. 为了通过这次考试,他学习非常刻苦。

不定式短语可以在一些作表语的形容词后作状语,表示原因或结果。

I…m sorry to trouble you. 很抱歉打扰你了。(原因)

Some of the apples are hard to reach. 有些苹果难以够着。(结果)

3.动词tell (叫,让),ask (请求),want(希望),order(命令),get(使),wish(希望),warn(警告),teach(教),invite(邀请)等动词后常跟不定式作宾语的补足语,构成tell/ask. sb. to do sth. “叫/请……某人做某事”句型。

Could you ask him to call me, please? 请你让他给我打个电话,好吗?

[特别提醒] 使役动词let(让),make(使),have(使)等; 感官动词see(看见),hear(听见),feel(感到),watch(观看),notice(注意到),look at(看),listen to(听)等跟不带to的不定式作宾语补足语。

What makes you think I…m a farmer? 你凭什么说我是农民?

A woman saw it happen when she was walking past. 一位妇女路过时看到(它掉下)的。

We often heard her sing in the next room. 我们时常听到她在隔壁唱歌。

help后面的不定式作宾语补足语,可以带to也可以不带to。

She helped her parents clean the house. 她帮助父母打扫房屋。

We can also use satellites to help us make telephone calls to foreign countries.

我们也能用卫星帮助我们和外国通电话

[特别提醒] 在被动语态句子中,不定式前必须加to。

He was made to do it.他被迫做这件事。

She was often heard to sing in the next room. 经常听到她在隔壁唱歌。

4.不定式短语作定语须放在被修饰的词语之后。

I have a lot of work to do. 我有许多事情要做。

The doctor said he could do nothing to help him. 医生说他无能为力。

5.不定式短语作主语时,常用it作形式主语,真正的主语不定式短语放在后面。

It is right to give up smoking. 戒烟是有益的。

6.作表语

To him, the first important thing was to save lives. 对他来说,最重

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