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中考英语语法精讲及实战练习——不定式  

2012-12-22 12:51:06|  分类: 英语专题 |  标签: |举报 |字号 订阅

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不定式和动词象一对姐妹一样亲密,本不该拆开来讲,可是篇幅有限,只能让他们分开了。不定式的构成非常简单,告诉我是什么?对!是to+动词原形。当然啦,to有时也可以不带。动词不定式没有人称和数的变化,可以担当除谓语外的任何句子成分。那什么时候可以不带to呢? Listen to me carefully.

不定式省to有四种情况:

使役动词 let,have,make 等后接不定式。如:Let him go! 让他走!

would rather,had better后。如:You had better stay at home.你最好呆在家里。

Why... / why not...后。如:Why not have a good rest on Sunday? 为什么星期天不好好休息一下呢?

感官动词 see, watch, look at, hear, listen to, smell,feel, find 等后作宾补,省to。如:I saw him dance. 我看见他跳舞。

注意:这些情况在被动句中可千万不可省to 哟! 如:The boss made them work the whole night. 变成被动句:They were made to work the whole night.

不定式的特殊用法:

It与不定式:动词不定式可以做主语,但如果动词不定式太长,显得头重脚轻的,那么我们就可用形式主语it代替,而把真正主语(即不定式)放于句尾。

如: It is not difficult for me to study English well.(对我来说学好英语是可能的。)

 

不定式还可以充当句子的宾语,但有些动词,如find,think,believe 等,在语法上不能接受不定式作宾语,只有用it作形式宾语,从而把动词不定式置于句尾。这样的不定式可继续充当其宾语的作用。

如: I found it difficult to fall asleep.我发现很难入睡。

还有一点:动词不定式,还可用在how,when,where,what,which 等疑问代词或副词之后,与其共同作宾语。如:I don't know how to use a computer.我不知道怎样使用电脑。Remember?

 

too...to...和enough...to:too...to表达"太 ... 一致于不能..."。

enough ... to 表达 "足以..."。这两个词组的用法用两个例子就可以说清楚了。

The box is too heavy for me to lift.这个箱子太沉了,我提不动。

He is old enough to go to school.他到上学的年龄了。也就是说,他的年龄足够上学了。记住这两个句子就可以举一反三,应用自如。你记住了吗?

 

练习:

1. Tell him ___ the window.

A. to close not

B. not to close

C. to not close

D. not close

2. Paul doesn't have to be made ___. He always works hard.

A. learn

B. to learn

C. learned

D. learning

3. You'd better _______the story in Japanese.

A. say

B. speak

C. tell

D. talk

4. The patient was warned ___ oily food after the operation.

A. to eat not

B. eating not

C. not to eat

D. not eating

5. ---- I usually go there by train.

---- Why not ___ by boat for a change?

A. to try going

B. trying to go

C. to try and go

D. try going

6. There are some books on the floor, would you like ________?

A. to pick them up

B. to pick up them

C. pick it up

D. pick up it

7. She is very ill, let's _______a doctor at once.

A. to wake up

B. send for

C. to pay for

D. pay for

8. I want ________a teacher when I grow up.

A. to be

B. to

C. be

D. being

9. It's cold here. You'd better ______ your coat.

A. not take out

B. not to take down

C. not take off

D. not to take away

10. My mother told me ________more water.

A. drinking

B. drank

C. to drink

D. drink

 

实战:

1. You'd better _______read in the sun.

A. not to

B. not

C. don't

D. to

2. You aren't a new driver, are you? _______.

A. No, I am

B. Yes, I'm not

C. No, you are

D. Yes, I am

3. Must I stay here now?_________.

A. No, you mustn't

B. No, you needn't

C. Yes, you can

D. Yes, you may

4. There is _______ "s" in the word "bus".

A. a

B. an

C. the

D. /

5. Neithere of us ______a doctor.

A. is

B. isn't

C. are

D. aren't

6. Who was the first in the girls'_________race?

A. 400 metre

B. 400-metre

C. 400 metres

D. 400-metres

7. It's too noisy here, I can't _______.

A. go to sleep

B. fall to sleep

C. sleeping

D. get to sleep

8. The story happened ________ the evening of October 20, 1995.

A. at

B. on

C. in

D. to

9. Could I speak to Mr Gao, please? ________. He has gone to the hospital.

A. I think so

B. Certainly, you can

C. I'm afraid not

D. I'm not sure

10. I'm sorry to trouble you, Miss Hu. ________.

A. Fine, thank you.

B. All right.

C. It's very kind of you .

D. It doesn't matter.

11. Can you tell me where________?

A. is the post office

B. the post office is

C. does the post office

D. the post office does

12. In England, the first name is _______name, but in China, the first name is ______ name.

A. family, given

B. given, family

C. family, family

D. given, given

13. Li Ping met an old friend of _______ on a train yesterday.

A. he

B. him

C. his

D. her

14. Kate is ________ girl.

A. a eighteen-year-old

B. a eighteen-years-old

C. an eighteen -years-old

D. an eighteen-year-old

15. Our city is getting ________.

A. beautiful and beautiful

B. beautifuler and beautifuler

C. more and more beautiful

D. more beautifler and more beautifuler

语法精讲及实战练习——连词

 语法精讲及实战练习——动词语态

 语法精讲及实战练习——句子种类

 语法精讲及实战练习——宾语从句

 语法精讲及实战练习——时态

 语法精讲及实战练习——不定式

 语法精讲及实战练习——状语从句

 语法精讲及实战练习——被动语态

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