中考专项讲解及实战不定式练习
不定式
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?
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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