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　　四. 动词不定式作宾语补足语

　　1. 后面能接to不定式作宾语补足语的动词有：ask, order, teach, tell, want, wish, help等。

　　The teacher told us to do Exercise 1. 老师要我们做练习一。

　　I want both of you to go. 我要你们俩去。

　　We helped her (to) repair her bike. 我们帮助她修理自行车。

　　2. 使役动词let, have, make及感官动词see, watch, notice, hear, feel等要以不带to的不定式作宾补。

　　Let’s have a rest.  我们休息一会吧。

　　I saw him come in. 我看见他进来了。

　　感官动词后既可跟不带to的不定式作宾补，也可跟v-ing作宾补，前者表示动作的全部过程已结束；后者表示动作正在进行。

　　I saw him come downstairs.我看见他下了楼。（说明他下楼了这件事）

　　I saw him coming downstairs.我看见他在下楼。（说明他下楼时的情景）

　　五. 动词不定式作状语

　　Later he left home to work in different cities. 不久他离开家到不同的城市工作。

　　He went to see a football match. 他去看足球比赛了。

　　In order to catch the other students, I must work hard.

　　为了赶上其他同学，我必须努力学习。

　　六. 动词不定式作定语

　　不定式作定语一般放在所修饰的词的后面。

　　I need something to eat.

　　Do you have something to read?

　　Tom was so excited that he had no word to say.

　　He is really a fool only to eat.

　　The man to stand here just now is our English teacher.

　　The doctor had no way to save the patient.

　　注意：