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高中英语|高中英语语法总结大全-动词不定式( 二 )



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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.Its for sb/Its of sb 1)for sb. 常用于表示事物的特征特点 , 表示客观形式的形容词 , 如easy, hard, difficult,interesting, impossible等:Its very hard f 。

13、or him to study two languages. 对他来说学两门外语是很难的 。
2)of sb的句型一般用表示人物的性格 , 品德 , 表示主观感情或态度的形容词 , 如good, kind, nice, clever, foolish, right 。
Its very nice of you to help me. 你来帮助我 , 你真是太好了 。
for 与of 的辨别方法:用介词后面的代词作主语 , 用介词前边的形容词作表语 , 造个句子 。
如果道理上通顺用of , 不通则用for 。
如:You are nice.(通顺 , 所以应用of) 。
He is hard.(人是困难的 , 不通 , 因此应用for 。
)不定式作表语 不 。

14、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 。

15、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Im glad to see you.典型例题The chair looks rather hard, but in fact it is very comfortable to _.A. sitB. sit onC. be seatD. be sat on答案:B. 。

16、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 。
用作介词的to to 有两种用法: 一为不定式+动词原形; 一为介词+名词/动名词, to 在下面的用法中是第二种 , 即to+ 名词/动名词:admit to承认 , confess to承认 , be accustomed to 习惯于 , be used to 习惯于 ,stick to 坚持 ,turn to开始 , 着手于 ,devote oneself to 献身于 , be devoted to 致力于 ,look forward to 盼望 , pay attention to 注意省to 的动词不定式 1 。

17、) 情态动词 ( 除ought 外 , ought to):2) 使役动词 let, have, make:3) 感官动词 see, watch, look at, notice , observe, hear, listen to, smell, feel, find 等后作宾补 , 省略to 。
注意:在被动语态中则to 不能省掉 。
I saw him dance. =He was seen to dance.The boss made them work the whole night.=They were made to work the whole night.4) would rather , ha 。

18、d better:5) Why / why not:6) help 可带to , 也可不带to, help sb (to) do sth:7) but和except:but前是动词do时 , 后面出现的动词用不带to的动词不定式 。
8) 由and, or和than连接的两个不定式 , 第二个to 可以省去:9) 通常在discover, imagine, suppose, think, understand等词后 , 可以省去to be:He is supposed (to be) nice.他应该是个好人 。
举例:He wants to move to France and marry the girl.He。

19、wants to do nothing but go out.比较:He wants to do nothing but go out.He wants to believe anything but to take the medicine.典型例题1) - I usually go there by train.- Why not _ by boat for a change?A. to try goingB.trying to goC.to try and goD.try going答案:D. why not 后面接不带to 的不定式 , 因此选D 。
2) Paul doesnt have t 。

20、o be made _. He always works hard.A. learnB. to learnC. learnedD. learning 答案:B. make后接不带to 的动词不定式 , 当其用于被动时 , to 不可省略 。
动词不定式的否定式 Tell him not to shut the windowShe pretended not to see me when I passed by. 我走过的时候 , 她假装没看见 。
典型例题1)Tell him _ the window.A. to shut notB. not to shutC. to not shutD. not shut答案: 。

21、B 。
tell sb to do sth 的否定形式为tell sb not to do sth.2)She pretended _ me when I passed by.A.not to seeB. not seeingC. to not seeD.having not seen答案:A 。
pretend 后应接不定式 。
其否定形式为pretend not to do sth. 。
3)Mrs. Smith warned her daughter _ after drinking.A. never to driveB. to never driverC. never drivingD. neve 。

22、r drive答案:A 。
warn sb to do sth. 的否定形式为warn sb not to do sth. 此处用的是否定词never.4) The boy wanted to ride his bicycle in the street , but his mother told him _.A. not toB. not to doC. not do itD. do not to 答案:A 。
not to 为not to do it 的省略形式 。


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标题:高中英语|高中英语语法总结大全-动词不定式( 二 )


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