【精品】初二英语动词不定式用法小结及练习

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初二英语动词不定式用法小结

动词不定式是动词的一种特殊形式,它没有人称和数的变化,在句子中不能做谓语;它由

“to+动词原形”构成,其否定形式是“not to+ 动词原形”. 在句子中可作主语、表语、宾语、宾语

补足语、定语和状语等句子成分。为使同学们更好地掌握其用法,现总结如下:

一、动词不定式作主语

为避免句子的头重脚轻,常动词不定式作主语,例如To think of the animals in danger is sad .

用it作为形式主语,而真正的主语动词不定式后置,如It is sad to think of the animals in danger . 常

用句型:It +be+adj./n to do sth./It takes sb. some time to do sth.

二、动词不定式作宾语

等,常接动词一些动词,如want, decide, hope, ask, agree, choose, learn, plan, need, teach, prepare,

不定式作宾语。应注意有些动词后面可接不定式作宾语,也可接动名词作宾语,但所表达的意义

不同。常见的有:(1)stop to do sth.停下来去做另一件事;stop doing sth. .停止正在做的事(2)try

to do sth. 尽力做某事;try doing sth.尝试做某事(3)remember/forget to do sth.记住/忘记去做某事;remember/forget doing sth. 记得/忘记做过某事。下列动词(enjoy finish keep mind practice spend advise suggest allow)后面不能用不定式,用动名词作宾语

三、动词不定式作宾语补足语

有些动词,如tell, ask, want, invite, teach, like, call等可接带to的动词不定式作宾语补足语,构

成tell/ask/want /call/invite sb. to do sth.结构。而表示使役动词和感官动词后面的宾语补足语时应省

去to,(在被动语态中应加上to)。这些动词可归纳为“一感(feel),二听(listen to, hear),三让(let, make, have,,四看(look at, see, watch, notice),半帮助(help)(即在动词help后面作宾语补足语时,to可有

可无)”。

四、动词不定式作状语

动词不定式作状语主要用来修饰动词,表示目的they did lots of work to save the candas等。,表结果,常用结构有too + adj./adv. + to do sth. adj./adv.enough + to do sth,表原因be +形容词+ to do

为了强调目的,有时可以把动词不定式放在句首,或在不定

sth 如I am surprised to hear the news.

式前加in order或so as to。

五、动词不定式作后置定语时,与被修饰的名词逻辑上有动宾关系。如果动词不定式是不及

物动词时,则要带上与之搭配的介词,构成及物动词短语。动词不定式作后置定语常用于“have/has

)“It’s time to do sth.”

等结构中。

(some words to say, nothing to do,enough place to live

+某事+to do”

六、特殊疑问词+不定式

特殊疑问词what when why how where 等可以和不定式连用在句子做各种成分。如How to use compurers is a problem. I can`t decide when to do it .

动词不定式专项训练题:

一、单项选择。

1. _______ is difficult to work out the maths problem.

A. This

B. That

C. It

D. Its

2. We decided _______ at the end of this month.

A. travel

B. not start out

C. to leave

D. going

3. They have no paper_______.

A. to write

B. to write with

C. write on D .to write on

4. Let him _______ a rest. I think he must be tired after the long walk.

A. has

B. have

C. to have

D. having

5. _______the computer is a problem.

A. How to use

B. What to use

C. Where to use

D. Which to use

6. The teacher told us _______in bed.

A. don’t read

B. read not

C. to not read

D. not to read

7. The old man was _______angry _______ say a word.

A. so, that

B. as, as

C. too, to

D. very, to

8. Why _______home tomorrow?

A. not go

B. not going

C. not to go

D. didn’t go

9. The TV set is too loud. Will you please _______?

A. turn down it

B. turn it down

C. to turn it down

D. to turn down it

____ your coat.

10. It’s cold outside. Y

ou had better ___

A. to put on

B. putting on

C. puts on

D. put on

二、用所给动词的正确形式填空。

1. It took half an hour _______(get) to the World Park from Kitty’s school.

2. It was interesting _______(see) so many places of interest from all over the world.

3. They want _______(save) time by using shorter words and phrases.

, Daniel, taught himself how _______(make) a home page.

4. Kitty’s classmate

5. I`m glad ________(see) you in Beijing

6. He put his photos on it for everyone _______(look) at.

7. Help him _______(put) the photos in the correct order.

8. He made the girl _______(cry) yesterday.

9. It’s time for class. Please stop _______(talk).

10. I’d like _______(go) to the Temple of Heaven.