初中英语语法不定式解析

  不定式的构成非常简单,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? 下面是小编给大家带来的初中英语语法不定式解析,希望能够帮助到大家!

  初中英语语法不定式解析

  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?

  好吧,再试一把趁热打铁!

  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

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