文档介绍：1. 动词不定式的用法
作主语
作宾语
作定语
作表语
作宾补
作状语
动词不定式

3. 巩固练习
1. 动词不定式作主语
动词不定式作主语,谓语动词用第三
人称单数。
To get there by car will take a whole day.
How to get enough money is still a question.
1. 动词不定式作主语
有时候为了保持句子平衡,常用it作形式主语,放到句首,而将作真实主语的动词不定式放到句末。
It will take a whole day to get there by car.
It is impossible for me to finish the work in a week.
复合结构:
1)for sb. to do sth
2) (It is +性格adj+)of sb. to do sth
性格adj:nice, kind, cruel, thoughtful, careful, careless…
It is very important for us to learn English.
It is difficult for him to finish the task in such a short time.
It is very nice of you to help me.
2. 动词不定式作宾语
动词不定式作宾语常用于下列动词后:
want, agree, decide, manage, wish, hope, ask, like, love , choose, promise, continue, plan, learn, expect, offer, prepare, refuse, pretend, attempt, intend, threaten, seek, hesitate, long, desire, fail等等。
动词不定式作宾语应注意的问题

try, go on, stop, mean, regret, remember, forget等
forget to do sth. 忘了去做某事
forget doing
I forget telling her about it
I forget to bring the purse with me when I left home this morning.
remember to do
remember doing
I remember reading the story in some book.
Remember to post the letter for me when you go to the post office.
动词不定式作宾语应注意的问题
2. 如果不定式作宾语而后面又有一个宾语补足语,这时要用it作形式宾语而把这个动词不定式放到补语后。
I feel it my duty to help you.
I once thought it impossible for us to finish the job in such a limited time.

动词不定式作定语,它与所修饰的名词或代词可能是主谓关系,也可能是动宾关系。如果是动宾关系,不定式主动表示被动。
He was the last one to leave school yesterday.
We have much homework to do everyday.