初中英语动词不定式讲解及练习

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动词不定式

一. 定义:

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。同时动词不定式又具有名词、形容词、副词的特征,在句中可以作主语、表语、宾语、宾语补足语、定语和状语。

二. 动词不定式的构成:to+动词原形

三. 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。

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。

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,也可跟动名词作宾语,但含义不同:

remember 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

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。

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:He found it very difficult to get to sleep. 他发现很难入睡。

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)

( ) 1. I often see Tom on the playground. When I passed the playground yesterday, I saw him .

A. play; playing

B. to play; play

C. playing; to play C. playing; play

( ) 2. — What does the sign on the bottle mean?

—It means “”.

A. This side up

B. Dangerous

C. Recyclable

D. No Parking

( ) 3. When the player finished running, he was out of .

A. breather

B. breathing

C. breath

D. the breath

( ) 4. — How about going hiking this weekend?

— Sorry, I prefer rather than .

A. to stay at home; go out

B. to go out; stay at home

C. staying at home; go out

D. going out; stay at home

( ) 5. —We really shouldn’t use plastic bags any more whe n shopping.

—It’s important to protect our environment.

A. So does it.

B. With pleasure.

C. That’s OK.

D. So it is.

( ) 6. —

— To the supermarket with Wang Fan.

A. Where have you gone?

B. Where did you go to the supermarket?

C. Where have you been?

D. Where’s Wang Fang?

( ) 7. I afraid of the dark, but now I don’t.

A. use to

B. used to

C. use to be

D. used to be

( ) 8. The earth is years old.

A. four thousands six hundreds

B. four thousand six hundred

C. four thousand and six hundred million

D. four thousand six hundred millions

( ) 9. They have made so great progress .

A. three years ago

B. for three years

C. in the past three years

D. before three years

( ) 10. — Has Li Hong gone to the library?

— Pardon?

— I asked the library.

A. if Li Hong had gone to

B. if had Li Hong gone to

C. Li Hong had gone to

D. has Li Hong gone to

( ) 11. — Oh, Miss Wei. Your skirt looks nice. Is it new?

— No, I it since three years ago.

A. had

B. bought

C. have had

D. have bought

( ) 12. — Must they clean and tidy the classroom now?

— No, they . It after school in the afternoon.

A. mustn’t; must clean

B. needn’t; must clean

C. mustn’t; need be cleaned

;D. don’t have to; can be cleaned

( ) 13. —It’s one o’clock now. I must go.

—It’s raining outside. Don’t leave it stops.

A. when

B. since

C. while

D. until

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