内容正文:
专题11 重点语法复习(非谓语动词概述)
非谓语动词
1. 概述
非谓语动词通常指动词不定式、动词-ing形式和动词-ed形式。非谓语动词不能独立作谓语,但可以作句子的其他成分。它们的基本形式变化如下图:
基本形式变化(以do 为例)
形式
一般式
进行式
完成式
动词不定式
to do/ to be done
to be doing
to have done sth. / to have being done
动词-ing形式
doing / being done
having done/ having been done
动词-ed形式
done
u
非谓语动词在句中可用作主语,宾语,表语,定语,状语和宾语补足语。
形式
功能
主语
宾语
表语
定语
状语
补足语
动词不定式
√
√
√
√
√
√
动词-ing形式
√
√
√
√
√
√
动词-ed形式
√
√
√
√
一、非谓语动词作主语:动词不定式与动词-ing形式
1.动词不定式和动词-ing形式都可以在句中用作主语。不定式作主语时常用形式主语it代替,不定式置于句末。
To make money is not the only purpose of our life.赚钱不是我们生活的唯一目的。
It is important for us to learn English very well.对我们来说学好英语是重要的。
Taking exercise every day is good for us.每天锻炼对我们是有益的。
2.动词-ing形式有时也用形式主语it代替,动词-ing形式置于句末。这时常用于以下句型:it is no good/use doing sth.,it is a waste doing sth., it is worthwhile doing sth.。
It is no good pretending to know what you do not know.假装知道你不知道的东西是没有益处的。
It is worthwhile following the advice of a wise man.听从明智人的建议是值得的。
名师点津动词-ing形式作主语时,有时其前面要加上形容词性物主代词或名词所有格,表明动作的发出者。
My closing the door made him angry.我关门使他生气了。
Parents' playing with their children can contribute to them growing healthily.父母和孩子玩能促进他们健康成长。
二、非谓语动词作宾语:动词不定式与动词-ing形式
1.在afford, agree, arrange, choose, claim, desire, expect, fail, hope, intend, offer, pretend, promise, refuse, wish等动词后,常接动词不定式作宾语。
He managed to pass the exam but I failed to finish my task.他成功地通过了考试,但是我没有完成我的任务。
He promised to be here at nine.他答应9点钟到这儿。
I didn't expect to see you here.我没有料到在这儿见到你。
2.在advise, admit, avoid, consider(考虑),deny, enjoy, finish, practise, suggest 等动词以及 burst out, give up, insist on, keep on, put off等短语后,常接动词-ing形式作宾语。
3.在like, love, begin, start等动词后,既可以接动词不定式作宾语,也可以接动词-ing形式作宾语,但二者区别不大,常可以交换使用。
I like singing.=I like to sing.我喜欢唱歌。
It started raining. =It started to rain.开始下雨了。
4.在remember, forget, regret, try, mean等动词后,既可以接动词不定式作宾语。也可以接动词-ing形式作宾语,但二者意义不同。
remember, forget
to do(动作未做)
doing(已做)
regret
to do(遗憾要做)
doing(后悔做过)
try
to do(尽力去做)
doing(