- 08-11 10个动词不定式作主语的例句
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非谓语动词--动词不定式
复习：非谓语动词种类
to do:表将来 表目的
doing：表正在发生 主动
done：表被动
一． 动词不定式
（一） 结构
肯定式：to do sth 否定式：not to do sth
被动式：to be done 完成式：to have done
(二)在句子中所作成分
（作主语）
To learn English well is very important.
=It is very important to learn English well.
（作表语）
My job is to look after patients.
（作宾语）
We want to go swimming.
（作宾语补足语）
She invited me to go to the concert.
She asked me to buy a pen.
(作定语)
Do you have anything to do tonight?
(作状语)
She got up very early to catch the early bus.
1. 作主语
（1）It’s+adj+for/of sb to do sth.
work?
翻译：学好英语很重要。
It’s very important to learn English well.
你独立完成这项工作太好了。
It’s kind of you to finish the work alone.
（2）It is + 名词 + to do sth.
It is our duty to take good care of the old.
（3）It takes sb. + some time + to do sth.
How long did it take you to finish the
2. 作宾语
（1）常接不定式作宾语的动词有：
want, refuse, forget, need, try, learn, choose, agree, help, hope, wish, expect, decide, begin, start
例如：He decided to help the homeless people.
(2) 形式宾语：sb find，feel，make，think it+形容词+to do sth.
I find it necessary to have breakfast.
We find it important to get to school on time.
3作宾补
（1）常接不定式作宾语补足语的动词有：
ask, tell, teach, wish, invite, encourage，
make/help/notice/... sb do)
Sam asked me to help him learn Chinese.
（2）不定式作宾补，下列词后省略to:
4看 see/ watch/ look at/ notice
3让 have/ let/ make
2听 hear/ listen to
1感觉 feel
半帮助 help
Eg.I watched her get into the car.
She helps me (to) clean the floor.
4作状语
结果状语： too…to…/enough to do sth
The boy is to young to look after himself.
原因状语
常跟在作表语的形容词(happy/glad/sad/sorry/surprised等)后。
I’m very happy to receive your letter.
目的状语
To do/so as to do/in order to do
可以放在句首，一般用逗号隔开，也可以放在句尾。
To get there on time, they started early.
评注性状语：to be honest/to begin with…
5. 定语
要放在被修饰的名词或代词之后。
We have made a plan to learn from Lei Feng.
（三）特殊用法
1. 有些动词后既可以接to do 作宾语，也可以接-ing形式作宾语，但表达的意义不同。
to do（没做-将来） Doing（已做 将来）
stop 停下来去做 停止正在做的
remember 记着去做 记得做过
forget 忘记去做 忘记做过
like 喜欢做（特定情况下） （习惯性喜欢）
2"特殊疑问词+to do
How to get there is a problem. 怎样到达那里是一个问题。(作主语)
I don’t know what to say. 我不知道说什么。(作宾语)
He taught me how to use the computer. 他教我怎样使用电脑。(作宾语补足语)
(四)练习
Ⅰ.用括号中所给单词的适当形式完成句子。
1.It takes me two hours ___________ my homework on school days. (finish)
2.You need ___________ a study plan first.(make)
3.It is very easy for me ___________ ping-pong well because my father has been
teaching me for three years.(play)
4.Lisa, could you help me ___________ this problem?It's too difficult.(solve)
5.My mother often tells me ___________ computer games too much.(not play)
6.Jim, would you like something ___________ ? (eat)
7.My classmate Dave is very funny. He often tells jokes to make us ________ . (laugh)
8.They volunteered ___________ as teachers in a small village.(work)
9.Lucy's dream is ___________ the volunteer job with her idol.(do)
10.When ___________ for Beijing depends on the weather. (leave)
11.My brother doesn't want to stay at home. He hopes ___________ outside.(work)
12.My mother always asks me ___________ up early and go to bed early.(get)