中考英语作文写作指导:动词不定式的用法
A. not to B. not to do C. not do it
D. do not to
答案:A。not to 为not to do it 的省略形式。可以只用to这个词,而不必重复整个不定式词组。及物动词do后应有名词、代词等,否则不对,因此B,D不对。
5) The patient was warned ___ oily food after the operation.
A. to eat no B. eating not C. not to eat
D. not eating
答案:C。warn一词要求后用不定式,此处为不定式的被动,否定形式为be warned not to do。
动词不定式的句子成分
不定式作表语
不定式可放在be动词后面,形成表语。例如:
My work is to clean the room every day.
His dream is to be a doctor.
不定式作定语
不定式做定语通常要放在被修饰的词后。例如:
I have a lot of work to do.
So he made some candles to give light.
不定式作状语
1)目的状语
To… only to (仅仅为了), in order to, so as to, so(such)… as to… (如此……以便……)
He ran so fast as to catch the first bus. 他飞快地跑以便赶上第一班车。
I come here only to say good-bye to you. 我来仅仅是向你告别。
2)作结果状语,表事先没有预料到的,要放在句子后面。
What have I said to make you angry.
He searched the room only to find nothing.
3) 表原因
I’m glad to see you.
典型例题
The chair looks rather hard, but in fact it is very comfortable to ___.
A. sit B. sit on C. be seat D. be sat on
答案:B. 如果不定式为不及物动词,其后应有必要的介词。当动词与介词连用时,常位于"形容词+动词不定式"结构的末尾。
不定式主语
1) It’s easy (for me) to do that.我做这事太容易了
easy, difficult, hard, important, possible, impossible, comfortable, necessary, better;
the first, the next, the last, the best, too much, too little, not enough
It’s so nice to hear your voice.
听到你的声音真高兴。
It’s necessary for you to lock the car when you do not use it.
当你不用车的时候,锁车是有必要的。
2) It’s very kind of you to help us. 他帮助我们,他真好。
Kind, nice, stupid, rude, clever, foolish, thoughtful, thoughtless, brave, considerate(考虑周到的), silly, selfish(自私的)
例句:
It was silly of us to believe him. 我们真愚蠢,竟然相信了他。
It seemed selfish of him not to give them anything. 他不给他们任何东西,这显得太自私了。
注意:1) 其他系动词如,look,appear等也可用于此句型
2) 不定式作为句子成分时,动词用单数形式。
3) 当不定式作主语的句子中又有一个不定式作表语时,不能用It is… to…的句型
(对)To see is to believe. 百闻不如一见。
(错)It is to believe to see.
不定式作补语
1) 动词+宾语+不定式(to do)
advise allow appoint believe cause challenge command compel consider declare drive enable encourage find forbid force guess hire imagine impel induce inform instruct invite judge know like order permit persuade remind report request require select send state suppose tell think train trust understand urge warn
例句:
a. Father will not allow us to play on the street.
父亲不让我们在街上玩耍。
b. We believe him to be guilty.
我们相信他是有罪的。
Find 的特殊用法:
Find 后可用分词做宾补,或先加形式宾语,再加形容词,最后加带to 的动词不定式。find后也可带一个从句。此类动词还有get,have。
I found him lying on the ground.
I found it important to learn.
I found that to learn English is important.
典型例题:
The next morning she found the man ___ in bed,dead.
A. lying B. lie C. lay D. laying