动词不定式

宾语
All you have to do is to finish it quickly. 表语
We found a house to live in. 定语
She came here to study English. I warned the patient not to eat cold water after the operation. 状语
动词不定式作宾语的注意事项（2点）
1．有些动词既可跟不定式作宾语，也可跟动名r to do 记住要做某事；remember doing 记得曾经做过 某事 forget to do忘记要做某事 forget doing 忘记曾经做过某事 stop to do 停下来去做某事 stop doing 停止做某事 go on to do 继续做另一件事 go on doing 继续做原来在做的事
动词不定式作状语
1.目的状语，置于句首或句末，置于句 首时常表示强调。如： 1)In order to catch the early bus, she go t up very early. 2)A group of young people got together to discuss this question. 3)She came to this city to visit her daug hter.
注意
C. 带疑问词的动词不定式在to
前加疑问词。
Mr. Lin will teach us how to use the computer.
Can you tell me where to get the book?
注意
D. 作简短回答或避免不必要的重复时，
动词不定式常常省去to 后面的动词， 只保留to 。
2.原因状语，多见于 “sb.+be+adj.+to do...”结构句中。如： 1) I feel very lucky to have him. 2) He ran out of money to buy old bik es.
3.结果状语，多见于“too...to”， “enough to...”结构句中。如： 1) I’m too tired to do it well. 2)The room is big enough for three p eople to live in.
动词不定式
定义 构成
用法
动词不定式是非谓语动词的一种， 它没有人称和数的变化，在句子 中不能独立作谓语，但它仍保持 动词的特点，既可以有自己的宾 语和状语。
动词不定式 的构成： to+动词原形
To do that sort of thing is foolish。 主语
动 词 不 定 式
I want to see you this evening.
动词不定式作宾语补足语
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）
A:Would you like to come to my party? B: Yes , I’d love to ( come to your party). Mary想用我的自行车，但我叫她别用。 Mary wanted to use my bike, but I asked her not to ( use my bike).
I remember seeing you somewhere before. 我记得以前在哪儿见过你。 Please remember to turn off the light when you leave. 离开时请记得关好灯。
动词不定式作宾语的注意事项（2点）
2．不定式作宾语时，如带有宾语补足语， 则要把不定式放到后面，用it作形式宾语， 构成“主语+动词+it+宾补（形容词、名词） +不定式”结构。如：
注意
B.动词不定式的否定式是在to前
加not；不带to的不定式则在动词 前加not. 如：
Rock asked me not to stay at home all day. 张明要我不要整天呆在家里。 My mother let me not do it by myself. 妈妈让我不要独自做这件事。
He found it very difficult to get to sleep. 他发现很难入睡。
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。
注意
A.有些动词后面的不定式不带to，如feel
（一感）notice一(注意)hear, listen to（ 二听）make, have, let（三让） see, watch, notice, observe（四看）.
I heard them sing a pop song . The teacher made me answer the question. We watched them play football .
宾补
动词不定式作宾语
后面能接不定式作宾语的动词有：agree, ask, choose, decide, forget, hope, learn, want, wish, would like等。如： We hope to get there before dark. 我们希望天黑以前到那儿。 The girl decided to do it herself. 那个姑娘决定自己做那件事。