初二语法-不定式。讲和练

初二语法：动词不定式

不定式就是“to+动词原型”，不定式在英文中可以充当很多成分。下面我们就一起来看一看不定式的几种用法。

一、不定式做主语

动词不定式作主语时，句子的谓语动词常用单数，不定式的位置有两种

(1)不定式位于句首。如：

T o go to school by bike takes me half an hour every day.

我每天花半个小时骑车上学。

(2)用it作形式主语，把真正的主语不定式放在句子的后面，常用于下列句式中.如：

①It＋be＋名词＋to do

It's a good idea to go to the park on a nice day.

天气好去公园是个好主意。

T o go to the park on a nice day is a good idea.就显得主语过长，句子头重脚轻，因而使用形式主语更利于清楚表达句子的结构。

②It＋be＋形容词＋for sb.＋to do

It is so hard for a kid to answer a difficult question like this.

回答这样一个难题对于一个孩子来说太难了。

③It＋be＋形容词＋of sb.＋to do

It is nice of you to tak e care of my cat when I’m busy.

你真好能在我忙的时候照顾我的猫。

difficult,easy,hard,important,impossible,necessary+for

careless,clever,honest,kind,lazy,nice,right,silly,stupid,wise+of

常见的区分for和of的例句还有这样一对：

It’s good for you to drink some water every day.

It’s very good of you to help me.

④It tak es/took sb.+some time+to do sth.

It took him only15minutes to finish his homework.

二、不定式做宾语

(1)下面这些动词后面，只能跟不定式做宾语

afford（付得起），agr ee（同意），arrange（安排），ask（要求），attempt（试图），choose

（决定），decide（决定），determine（决心），expect（期待），fail（未履行），hesitate（犹

豫），hope（希望），learn（学会），manage（设法），offer（主动提出），plan（计划），prep are （准备），pr e te nd（假装），promise（答应），refuse（拒绝），want（想要）如：He ask ed his mom to buy him a new bicycle.

他要求妈妈给他买一辆新自行车。

At last,he chose to tell the truth.

最终，他选择了说出事实。

She decided to drop out of school because her family couldn’t pay for her education.

他决定辍学因为家里无力支付她的教育支出。

He failed to finish his work on time.

他没能按时完成工作。

I hope to see you again soon.

我希望能很快再次见到你。

He managed to save his co-workers’lives.

他设法挽救了他同事的生命。

My p arents offered to tak e us to the teahouse.

我父母提出带我们去茶馆。

He planned to give his wife a surprise.

他计划给他妻子一个惊喜。

He promised to watch the show with us.

他承诺和我们一起去看演出。

(2)动词+疑问词+不定式

动词后常常使用“疑问词+不定式”作动词的宾语。如：

I don’t know how to get to the airport from here.

我不知道从这儿如何到机场。

Please show us how to do that.

请演示给我们如何去做。

He forgot when to start the meeting.

他忘记了什么时候开始会议。

三、不定式做定语

1.不定式在做定语的时候，位置在被修饰的部分的后面。如：

They don’t have enough food to eat or enough places to live in.

他们没有足够的食物吃，足够的地方住。

My dream to become a teacher has come true at last.

我当老师的梦想最终实现了。

re t

The next train to arrive is from W ashington.

下一个到站的列车是从华盛顿来的。

2.名词前有序数词或形容词最高级修饰的时候，名词后面的定语要用不定式。如： 1.He is always the first student to arrive and the last to leave.

2.It is the most suitable gift to buy .

3.在“there be...”句型里，句子的主语是动词不定式动作的对象，常用主动式。如：

1.There’s just so much to see and do here.

2.... but there are still many things to do there.

不定式练习：

1. Mrs. Smith warned her daughter ________ after drinking.

A. never to drive

B. to never drive

C. never driving

D. never drive

2. The workers want us ________ tog ether with them. A. work B. working C. to work

D. work ed 3. There ’ so many kinds of tape-recorders on sale that I can ’ mak e up my mind ___to buy . A. what

B. which

C. how

D. where

4. There isn ’t any difference be tw een the two. I really don ’t know _________. A. where to choose B. which to choose

C. to choose what

D. to choose which 5. ——“Have you decided when ________?” ------“Y es, tomorrow morning.”

A. to leave

B. to be leaving

C. will you leave

D. are you leaving

6. Last su mme r I took a course on ________. A. how to mak e dresses B. how dresses be made

C. how to be made dresses

D. how dresses to be made

7. He doesn ’t know ______ to stay or not. A. whether

B. if

C. either

D. if he will

8. ---The light in the office is still on. ---Oh, I forgot _______.

A. turning it off

B. turn it off

C. to turn it off

D. having turned it off

9. W e ag r ee d _________ here but so far she hasn ’t turned up yet.

A. having met

B. meeting

C. to meet

D. to have me

10.She reached the top of the hill and stopped___on a big rock by the side of the path.

A.to have rested

B.resting

C.to rest

D.rest

11.I need a day or two________.

A.to think it over

B.to think over

C.of thinking

D.to think over it

12.It’s freezing outside.Y ou_______put on your overcoat.

A.had better to

B.had better

C.would better

D.would better to

13.The chair looks rather hard,but in fact it is very comfortable to_______.

A.sit

B.sit on

C.be sit

D.be sat on

14.I’m hungry.Get me something_________.

A.eat

B.to eat

C.eating

D.for eating

15.---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

16.I’ve work ed with children before,so I know what_________in my new job.

A.expected

B.to expect

C.to be expecting

D.expects

17.The pr oblem_______at tomorr ow’s meeting is a very difficult one.

A.being discussed

B.discussed

C.to be discussed

D.to discuss

18.T obby wanted to ride his bicycle in the street,but his mothe r told him_________.

A.not to

B.not to do

C.not do it

D.do not to

19.She couldn’t decide which restaurant_______.

A.to have lunch

B.to eat

C.to eat at

D.eating at

20.I prefer____rather than______.

A.read;watch

B.to read;watch

C.reading;to watch

D.to read;to watch

人教新目标八年级上册Unit 5 语法：动词不定式作宾语 精讲精练

Unit 5 单元语法：动词不定式作宾语 精讲精练 动词不定式的基本形式为“to＋动词原形”，是一种非谓语动词形式，动词不定式没有人称和数的变化。在句子中可作主语、宾语、表语、定语、状语等。 不定式作宾语的用法非常广泛。许多动词都可以接这种宾语，结构为“动词＋不定式”。常见动词有：ask，expect，plan，want，learn，need，hope，try，like，begin，agree等。下面的顺口溜能帮助同学们记住这一用法： He hopes to see you soon.他希望不久能见到你。 Li Jun wants to buy an MP4.李军想买一个MP4。 We plan to go there by train. 我们计划坐火车去那儿。 He decided to go home.他决定回家。 [注意] find/think/feel+it+形容词+动词不定式，其中it为形式宾语，动词不定式为真正宾语。 I find it difficult to learn English well.我发现学好英语很难。 语法练习 一、用括号内所给动词的适当形式填空。 1．You can’t expect ________(learn) a new sport in a few days. 2．Larry wants ________(visit) her grandparents this Sunday morning. 3．We’re planning ________(go) to Beijing on vacation next week. 4．The little boy wishes ________(fly) to the moon one day. 5．I try ________(get) good grades in this Chinese exam. 6．She decided ________(leave) here a little earlier. 7．I’d like ________(write) a book about my hometown. 8．His daughter is learning ________(play) the piano. 9．They hope ________(stay) in Hong Kong for another two weeks. 10．My teacher can help ________(bring) out the best in me. 11. Henry got up at 6:00 am. and tried ________(not miss) the early bus. 12. I forgot ________(have) breakfast with you this morning. I was too busy at that time. 13. Please remember ________(leave) me a message. 14. I’d like ________(go) to Xiamen with my parents next week. 15. Tom seems ________(like) this farm. He is very happy to stay here. 二、按要求完成句子，每空一词 1. Reading English every morning is important.(改为同义句） It is important_____ _______English every morning. 2. Mr. Green plans to spend time with his family on weekends.(对划线部分提问）

人教版八年级下册英语Unit2语法讲练(包含答案)

Unit2 I’ll help to clean up the city parks. ◆重点语法一：动词不定式 语法全解：动词不定式是动词的一种非谓语形式，是非谓语动词的一种，它没有人称和数的变化，在句中不能作谓语。 1. 动词不定式的构成：动词不定式的基本形式是“to+动词原形”，有时to要省去；动词不定式的否定形式是“not to+动词原形”。动词不定式没有人称和数的变化，在句子中不能作谓语，但仍保留动词的特点，即可以有自己的宾语和状语。动词不定式同它的宾语或状语构成动词不定式短语。 ● He wanted to sit down. 他想坐下。 ● Let me have a look at that letter. 我来看看那封信吧。 ● They asked him to sing a pop song at the party. 他们请他在宴会上唱了一首流行歌曲。 ● Tell him not to leave alone. 告诉他不要一个人离开。 ● I thought I told you not to touch anything！我想我告诉过你什么都不要碰的！ 2. 动词不定式的用法

3. 动词不定式不带to的情况 ①在固定词组had better之后。注意：had better do sth.的否定形式是had better not do sth.。 ● You had better go home now. 你最好现在回家。 ●It’s cold outside. You’d better not go out. 外面很冷，你最好不要出去。 ②在使役动词或感官动词后作宾语补足语时，不带to。这些动词可归纳为： 一感（feel） 二听（listen to, hear） 三让（let, make, have） 四看（look at, see, watch, notice） ● I made them give me the money back. 我迫使他们把钱还给了我。 ●I didn’t see you come in. 我没看见你进来。 ③在why not之后。 “Why not+不带to的不定式？”与“Why don’t you do ...?”同义，可以用来提出建议或劝告。 ●Why not go with us? 为什么不和我们一起去呢？

最新人教版八年级下册英语考点动词不定式讲解及练习有答案)

动词不定式 一、动词不定式在句子中不能充当谓语，没有人称和数的变化。 二、动词不定式是由“to+动词原形”构成(有时可以不带to)。动词不定式的否定形式是“not+动词不定式”(not不与助动词连用)。 三、动词不定式短语具有名词、形容词和副词等的功能，可在句中用做多种句子成分。 1、主语：常置于句末，而用it代替其做形式主语。 To go in for sports helps you stay fit. It is dangerous to swim in the deep sea on your own. 注：此句式中不定式逻辑上的主语可由for或of引出，逻辑主语由of引出时，表语的形容词为kind, nice, good, polite, clever, foolish, right, wrong等表示评价的形容词。例：It’s right of him to refuse the invitation. (him为逻辑主语) 2、表语：Our duty is to protect the environment. 3、动词宾语：此种情况可按固定搭配或句式去记。 例：Would you like to see my photos? Kevin planned to visit his uncle. 和plan用法一样的词还有：start, want, agree, hope, begin,

decide等。 I found it very difficult to get a job. (it为形式宾语) 4、宾语补足语： (1) 在多数复合宾语及物动词后要带to。 例：I asked a friend to read it to me. (book4，L2) (2) 在表示感觉、致使等意义的动词(see, watch, hear, feel, notice, observe, make, let, have, help等) 后不带to。 例：They heard him sing a pop song in the meeting room. 5、定语：动词不定式做定语放在所修饰的名词的后面。 例：I have something important to say. 6、形容词补足语:在表示心理、感情、评价等的形容词后，对其进行补充说明。 例：We are very glad to meet you again. 7、状语：表示目的、原因、程度等。 例：They brought in photos of their families for me to look at. 8、“疑问词+不定式”用法：不定式前可带what, who, which, where,

人教版英语八年级上册动词不定式讲解,专项练习(附答案)

初中英语语法（动词不定式） 1．不定式的基本形式与结构 动词不定式指通常由to加上动词原形(如to write) 所构成的一种非限定性动词形式，但在有些情况下to可以省略。动词不定式有进行体和完成体(如上to be writing，to have written)，也有被动态(如to be written)，所有的主动词，不论是及物动词还是不及物动词，也不论是动作动词还是状态动词，都有不定式形式。助动词除be和have外，没有不定式形式。动词不定式在语法功能上可作主语、宾语、表语、定语和状语。 2．不定式的用法 1)不定式结构作主语 1.Te get contact with his family in Taiwan made him extremely happy since they separated more than 40 years ago． 2.To finish that task in such a short time is really a challenge． 在上述情况下，如果不定式较长，显得头重脚轻，则可由代词让作形式主语(形式主语it不可由that或this等其他代词代替)，而将不定式放到后面。如： 1.It made him extremely happy to get contact with his family in Taiwan since they separated more than 40 years ago． 2.John admitted that it is always difficult for him to be on time． 不定式结构所表示的动作是谁做的，即不定式的逻辑主语，通常可以通过for sb. to do sth. 结构表达： 1.It is quite important for us to read good books during a general review． 2.It is not difficult fot those talented students to pass the exam. 在某些形容词(如careless，clever，considerate，foolish，good，impolite，kind，naughty，nice，silly，stupid等)作表语时，不定式后可以加of来引导出其逻辑主语： 1.It is very kind of you to tell me the truth． 2.It is stupid of him to do such a silly thing． 2)不定式作宾语 不定式作宾语有两种：一种是及物动词后直接跟带to的不定式，另一种是“及物动词+疑问词+带to的不定式。 及物动词+带to的不定式结构: 只能跟动词不定式的动词，常见的有: afford，agree，aim，appear，ask，believe，care，claim，decide demand，desire，determine，expect，fail，happen，hesitate，hope，intend，learn，long，manage，offer，pretend，promise，prepare，refuse，seek，swear，undertake，want，wish等。 1.He managed to solve the complicated problem. 2.The stranger offered to show me the way. 3.Mr. Smith undertook to build a new plant in South Africa. 动词+疑问代(副)词+不定式：

初二语法-不定式。讲和练

初二语法：动词不定式 不定式就是“to+动词原型”，不定式在英文中可以充当很多成分。下面我们就一起来看一看不定式的几种用法。 一、不定式做主语 动词不定式作主语时，句子的谓语动词常用单数，不定式的位置有两种 (1)不定式位于句首。如： T o go to school by bike takes me half an hour every day. 我每天花半个小时骑车上学。 (2)用it作形式主语，把真正的主语不定式放在句子的后面，常用于下列句式中.如： ①It＋be＋名词＋to do It's a good idea to go to the park on a nice day. 天气好去公园是个好主意。 T o go to the park on a nice day is a good idea.就显得主语过长，句子头重脚轻，因而使用形式主语更利于清楚表达句子的结构。 ②It＋be＋形容词＋for sb.＋to do It is so hard for a kid to answer a difficult question like this. 回答这样一个难题对于一个孩子来说太难了。 ③It＋be＋形容词＋of sb.＋to do It is nice of you to tak e care of my cat when I’m busy. 你真好能在我忙的时候照顾我的猫。 difficult,easy,hard,important,impossible,necessary+for careless,clever,honest,kind,lazy,nice,right,silly,stupid,wise+of 常见的区分for和of的例句还有这样一对： It’s good for you to drink some water every day. It’s very good of you to help me. ④It tak es/took sb.+some time+to do sth. It took him only15minutes to finish his homework. 二、不定式做宾语 (1)下面这些动词后面，只能跟不定式做宾语 afford（付得起），agr ee（同意），arrange（安排），ask（要求），attempt（试图），choose （决定），decide（决定），determine（决心），expect（期待），fail（未履行），hesitate（犹

天津市外研版八年级英语上册动词不定式用法总结及练习附答案

八年级上册动词不定式用法总结及练习M5-6 动词不定式即to+动词原形，否定形式是：not to +动词原形。动词不定式在句中不能作谓语，可以充当其他句子成分。动词不定式没有人称和数的变化。同学们在八年级上册书中学习的是动词不定式作宾语、目的状语和宾语补足语的用法。下面做详细解说： 一：动词不定式作宾语。同学们在学习英语过程中会遇到两个动词连用的情况，比如要表达“想做某事，需要做某事，决定做某事”时，第一个动词往往在句中体现句子的时态，即谓语动词，但是后面的动词该用什么形式呢？这就需要用到动词不定式了。如：want to do sth. , need to do sth. , decide to do sth. 像want，need，decide等动词后面可以直接加动词不定式，那么这个动词不定式就作前面动词的宾语。这类动词属于及物动词（就是能够直接加名词代词作宾语的动词），表明想要，计划或希望要做（或发生）的事。动词不定式所表示的多为将来的行为。但需要注意的是:在英语学习中并不是所有的动词都采用“动词+不定式”的形式，因为动词不同，对其后的形式要求也不同。常见的后面接“to +动词原形”作宾语的动词有：plan计划，decide决定，want想要，hope希望，offer提议，learn 学习，promise 承诺，agree同意，等等。 同步练习： （一）用所给动词的正确形式填空 1. She said she offered ____ (take) me to the shopping center. 2. They decided ____ (play) tennis against Guangming Middle School.

初中英语动词不定式讲解及练习

动词不定式 一. 定义： 动词不定式是非谓语动词的一种，它没有人称和数的变化，在句子中不能独立作谓语，但它仍保持动词的特点，既可以有自己的宾语和状语。同时动词不定式又具有名词、形容词、副词的特征，在句中可以作主语、表语、宾语、宾语补足语、定语和状语。 二. 动词不定式的构成：to+动词原形 三. 动词不定式作宾语 后面能接不定式作宾语的动词有：agree, ask, choose, decide, forget, hope, learn, want, wish, would like等。 We hope to get there before dark. 我们希望天黑以前到那儿。 The girl decided to do it herself. 那个姑娘决定自己做那件事。 动词不定式作宾语的注意事项（2点） 1. 有些动词既可跟不定式作宾语，也可跟动名词作宾语，但含义不同： remember to do 记住要做某事 remember doing 记得曾经做过某事 forget to do忘记要做某事 forget doing 忘记曾经做过某事 stop to do 停下来去做某事 stop doing 停止做某事 go on to do 继续做另一件事 go on doing 继续做原来在做的事 I remember seeing you somewhere before. 我记得以前在哪儿见过你。 Please remember to turn off the light when you leave. 离开时请记得关好灯。 2. 不定式作宾语时，如带有宾语补足语，则要把不定式放到后面，用it作形式宾语，构成“主语+动词+it+宾补（形容词、名词）+不定式”结构。 如：He found it very difficult to get to sleep. 他发现很难入睡。 四. 动词不定式作宾语补足语 1. 后面能接to不定式作宾语补足语的动词有：ask, order, teach, tell, want, wish, help 等。 The teacher told us to do Exercise 1. 老师要我们做练习一。 I want both of you to go. 我要你们俩去。 We helped her (to) repair her bike. 我们帮助她修理自行车。 2. 使役动词let, have, make及感官动词see, watch, notice, hear, feel等要以不带 to的不定式作宾补。 Let’s have a rest. 我们休息一会吧。I saw him come in. 我看见他进来了。 感官动词后既可跟不带to的不定式作宾补，也可跟v-ing作宾补，前者表示动作的全部过程已结束；后者表示动作正在进行。 I saw him come downstairs.我看见他下了楼。（说明他下楼了这件事）

初二英语语法不定式详解及习题

初二英语语法不定式详解及习题 （一）、动词不定式作主语动词不定式作主语时，可以直接放在谓语动词前面的主语位置，也可以用先行词it作形式主语，而将真正的主语(不定式)置于后面。常见的句式有：(1)It is +形容词(of sb)to do sth、(2)It is +名词(for sb)to do sth(3)It takes sb some time to do sth(4)It is +形容词(for sb)to do sth、句式注意： 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、和 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 for 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。 （二）、动词不定式作宾语

1、He wants to buy some vegetables、 2、 Dont forget to bringyour homework with you when you come to school、 3、 He found it very difficult ______、常接不定式作宾语的动词;want， like， agree， hope， wish， learn， begin，start， seem， decide， hate， choose， forget， remember 等动词后面，可以接不定式作宾语。如果其后接形容词补足语时，则可以用it作形式宾语，而把作真正宾语的不定式放到后面Sb + V + it （形式宾语）+ agj （形容词）+to+ V（宾语）注意无BE动词。(三)、动词不定式作宾语补足语 Mr Li often teaches his Japanese friends to cook Chinese food、He found it very difficult to learn English well、不定式可以用作宾语补足语。后面可以接不定式作宾语补足语的动词有：ask， teach， expect， tell， allow等。如果其后接形容词补足语时，则可以用it作形式宾语，而把作真正宾语的不定式放到后面Sb + V + it （形式宾语）+ agj （形容词）+to+ V（宾语）注意无be动词。(四)、动词不定式作状语、She went to visit her teacher、go， come， try， do / try ones best等动词或短语动词作谓语时，其后常常可以接不定式作目的状语。be +形容词+ to do sth＂结构中的不定式作状语，常表示原因或方式。too +形容词/副词(for sb)to do…＂(太……而不能……)和＂enough (for sb)

冀教版八年级英语语法动词不定式精讲精练

冀教版八年级英语语法动词不定式精讲精练 1概念引入 （1）动词不定式作表语 To lose is to learn. 失败就是学习。 （2）动词不定式作主语 It is better to give than to take. 给予比接受更好。 （3）不定式作宾语 Expect to be treated as you have treated others. 你怎样待别人，就指望别人怎样待你。 （4）不定式作宾补 Adversity causes some men to break，others to break records. 逆境使一些人崩溃，也使一些人破记录。 （5）不定式作定语 There is a time to talk and a time to act. 该说的时候说，该做的时候做。 （6）不定式作目的状语 To find the exact answer，one must first ask the exact question. 要找到确切的答案，首先必须提出确切的问题。 2. 动词不定式定义： 动词不定式是一种非谓语形式（不能作谓语），基本形式是to do形式(to是不定式符号的标志，无意义，可以不翻译) 肯定式：to + 动词原形 否定式：not to + 动词原形 1.动词不定式的特征 动词不定动式是一种非谓语动词形式，它没有人称和数的变化，在句子中不能作谓语，但可以作除谓语之外的其它任何句子成分（主语、表语、宾语、宾语补足语、定语和状语）；动词不定式具有名词、形容词和副词的特征，同时还保持动词的某些特点，既可以有自己的宾语和状语，动词不定式和它的宾语和状语构成不定式短语。 2. 动词不定式在句子中的作用 动词不定式是由to+动词原形构成，在句中起名词，形容词和副词的作用，可以担任除谓语以外的其它任何成分。 （1）动词不定式作主语。例如： To master a language is not an easy thing. 掌握一门语言不是一件容易的事情。

(完整版)初二英语语法不定式详解及习题

初二英法：不定式解及 一..不定式的构成： to+ 原形 二不定式的特点：不定式不能够独作，没有人称和数的化，不定式具有名，形容，和副 的特点，能够在句子中作主，表，。足，定，和状。将用法以下。 〔一〕、不定式作主 不定式作主，能够直接放在前面的主地址，也能够用先行it 作形式主，而将真正的主 (不定式 )置于后边。常的句式有： (1)It is +形容 (of sb)to do sth. (2)It is +名 (for sb)to do sth (3)It takes sb some time to do sth (4)It is +形容 (for sb)to do sth. 句式 注意：当不定式作主的句子中又有一个不定式作表，不能够用It is⋯ to ⋯的句型 ( )To see is to believe.百不如一。( )It is to believe to see. It's for sb. 和 It's of sb. 1) for sb. 常用于表示事物的特点特点，表示客形式的形容，如impossible 等： It's very hard for him to study two languages.他来学两外是很的。2) of sb 的句型一般用表示人物的性格，道德，表示主感情或度的形容，right 。easy, hard, d ifficult,interesting,如 good, kind, nice, clever, foolish, It's very nice of you to help me.你来帮助我，你真是太好了。 〔二〕、不定式作 1.He wants to buy some vegetables. 2.Don't forget to bringyour homework with you when you come to school. 3.He found it very difficult ______. 常接不定式作的;want ， like， agree， hope ， wish ， learn ， begin ， start ， seem， decide ， hate， choose， forget ， remember等后边，能够接不定式作。若是此后接形容足， 能够用 it 作形式，而把作真切的不定式放到后边 Sb + V + it 〔形式〕 + agj 〔形容〕 +to+ V〔〕注意无BE 。 (三 )、不定式作足 Mr Li often teaches his Japanese friends to cook Chinese food. He found it very difficult to learn English well. 不定式能够用作足。后边能够接不定式作足的有： ask， teach， expect ，等。若是此后接形容足， 能够用 it 作形式，而把作真切的不定式放到后边 tell ，allow Sb + V + it〔形式〕+ agj〔形容〕+to+ V〔〕注意无be。 (四 )、不定式作状 .She went to visit her teacher. go， come，try ，do / try one's best等或短作，此后常常能够接不定式作目的状。 be +形容 + to do sth ＂构中的不定式作状，常表示原因或方式。 too +形容 / 副 (for sb)to do ⋯＂ (太⋯⋯而不能够⋯⋯)和＂ enough (for sb) to do⋯＂ (足以、足⋯⋯ 做⋯⋯ )构中，不定式作果状。 so\such......... that........ 这样 ......以致 ......的用法及与其他句型的互. A.Sb\Sth +be\ V+ so + adj\adv (a\an+adj +n)+that + can't\couldn't......... = Sb\Sth +be\ V+ too+adj\adv(for+Sb\Sth)+to+V ...... ..... 这样 ......以致 ....=太而 .....不能够 .....

初二英语动词不定式讲义和练习附带答案

初二年级英语动词不定式讲义和对应练习 动词不定式是由“不定式符号to+动词原形〞构成的一种非谓语动词构造。有些动词不定式不带to，动词不定式可以作句子的主语、表语、宾语、定语、补语、状语或单独使用。一、用作主语 直接把动词不定式置于句首的情况不多，多数情况用it作形式主语，把真正的主语——动词不定式置于句末，特别是不定式短语较长时(有时在不定式的前面还会用for sb.表示不定式的逻辑主语)。动词不定式作主语，谓语动词用第三人称单数形式。带疑问词的不定式短语作主语常置于句首，复合不定式构造作主语常置于句末。如： 1、把不定式置于句首。如： To get there by bike will take us half an hour. 2、用it作形式主语，把真正的主语不定式置于句后，常用于以下句式中。如： ①It＋be＋名词＋to do It's our duty to take good care of the old. ②It takes sb + some time +to do How long did it take you to finish the work? ③It＋be＋形容词＋for sb＋to do 逻辑主语 It is difficult for us to finish writing the position a quarter of an hour. ④It＋be＋形容词＋of sb＋to do “It is stupid of you to write down everything〞，the teacher says. 注意：在③中，常用表示客观情况的形容词，如：difficult, easy, hard, important, impossible, necessary 等；在④中，常用careless, clever, good, foolish, honest, kind, lazy, nice, right, silly, stupid, wise等表示赞扬或批评的词，强调对人的评价。在不定式前的sb，可看作其逻辑主语。这一句式有时相当于Sb is＋形容词＋to do句式，如：It's kind of you to help me with my English.=You are kind to help me with my English. ⑤It seems(appears)＋形容词＋to do It seemed impossible to save money. 3、带疑问词的不定式短语作主语 How to solve the problem is hard for him. 二、用作表语 动词不定式作表语，常说明主语的容、性质、特征，通常放在连系动词〔主要是be动词〕后。如： 1.The best way to improve your English is to join an English club. 2.The first thing is to greet the teacher. 注意：不定式作表语表示具体动作或将来动作；动名词作表语表示抽象的一般行为。 Our work is serving the people. 三、用作宾语 1.可以接带to的动词不定式作宾语的动词主要有：要求、选择、同意(ask, choose, agree)，期望、决定、学习(e*pect, hope, decide, learn)，宁可、假装、知道(prefer, pretend, know)，希望、想要、愿意(wish, want, would like / love)。如： 1)We decided to talk to some students about why they go there. 2)He prefers to eat white bread and rice. 3)I’d love to visit Me*ico 2.动词decide, know, learn, show, teach, tell...，介词构造on...可用疑问词带to的不

初二动词不定式练习题(精讲)

初二动词不定式练习题 (精讲) -CAL-FENGHAI-(2020YEAR-YICAI)_JINGBIAN

动词不定式专项练习 一、动词不定式作主语 1. It's our duty _________ the room every day. A. to clean B. cleaned C. clean D. cleans(甘肃省) 2. It's hard for us _________ English well. A. learn B. learns C. to learn D. learning(江西省) 3.建造这座立交桥将花费工人们一年多的时间。 It will _________ the workers over a year _________ _________ the flyover.(北京市海淀区) 4. It's very nice _________ you to get me two tickets _________ the World Cup. A. for， of B. of， for C. to， for D. of， to(安徽省) Keys： 1. A 2. C 3. take， to， build 4. B ［简析］动词不定式作主语时，可以直接放在谓语动词前面的主语位置，也可以用先行词it作形式主语，而将真正的主语(不定式)置于后面。常见的句式有： (1)It is +形容词(of sb)to do sth. (2)It is +名词(for sb)to do sth (3)It takes sb some time to do sth (4)It is +形容词(for sb)to do sth.句式 (对)To see is to believe.百闻不如一见。(错)It is to believe to see. It's for sb.和 It's 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： It's very hard for 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。 It's very nice of you to help me. 你来帮助我，你真是太好了。 二、动词不定式作宾语 1. He wants ______ some vegetables. A. buy B. buying C. to buy D. buys (山西省) 2. Don't forget ______ your homework with you when you come to school. A. to bring B. bringing C. to take D. taking (福建省) 3. He found it very difficult ______. A. sleeping B. sleeps C. slept D. to fall asleep (湖南省) 三、动词不定式作宾语补足语 1. Robert often asks us ______ his Chinese, so his Chinese is much better than before. A. help him B. to help him with C. to help with D. helps him with (江苏省) 2. Mr Li often teaches his Japanese friends ______ Chinese food. A. cook B. cooks C. to cook D. cooked (甘肃省) 四、动词不定式作状语 1. She went ______ her teacher. A. to see B. looks C. saw D. seeing (江西省) 2. Meimei likes English very much. She does her best ______ English well. A. learn B. learning C. to learn D. learns (四川省)

牛津上海版8A语法动词不定时讲解及练习(有答案)

语法：动词不定式 动词不定式是一种非谓语动词，其结构为“(to) + 动词原形”。 动词不定式的用法: 1. 作宾语 不定式常用作某些动词的宾语, 如want, hope, wish, agree, learn, like, love, offer(表示要)，plan, promise, remember, forget, try(努力), decide(决定), begin, start等。 例如：She wanted to buy a few postcards. 她想买几张明信片。 The car repairer began to check my car. 汽车修理工开始检查我的汽车。 It started to snow at midnight. 半夜里开始下雪了。 在某些动词如know, learn, decide, wonder(想知道)，remember, forget, tell, show, teach等后，还可以接“疑问词+ to不定式”。 例如：I didn’t know what to say to him. 我不知道对他说什么好。 They are learning how to use the computer. 他们正在学习怎样使用电脑。 Did they tell you where to go? 他们告诉你去哪儿吗？ The farmer showed us how to cut rice. 农民教我们怎样割稻。 ● 动词不定式作宾语与动名词作宾语辨析 ⑴在动词want, wish, hope, decide, help, promise, plan, manage, agree等后只能用动词不定式作宾语，而在动词dislike, keep, finish, mind(介意)，practice(练习)，enjoy等后只能用动名词作宾语。 例如：We promise to keep our classroom clean all the time. 我们答应始终保持我们的教室清洁。 Ted enjoys growing flowers. 泰德喜欢种花。

初二英语动词不定式用法小结及练习

初二英语动词不定式用法小结 动词不定式是动词的一种特殊形式，它没有人称和数的变化，在句子中不能做谓语；它由“to+动词原形”构成，其否定形式是“not to+ 动词原形”. 在句子中可作主语、表语、宾语、宾语补足语、定语和状语等句子成分。为使同学们更好地掌握其用法，现总结如下： 一、动词不定式作主语 动词不定式作主语，例如T o think of the animals in danger is sad .为避免句子的头重脚轻，常用it作为形式主语，而真正的主语动词不定式后置，如It is sad to think of the animals in danger . 常用句型:It +be+adj./n to do sth./It takes sb. some time to do sth. 二、动词不定式作宾语 一些动词，如want, decide, hope, ask, agree, choose, learn, plan, need, teach, prepare,等，常接动词不定式作宾语。应注意有些动词后面可接不定式作宾语，也可接动名词作宾语，但所表达的意义不同。常见的有：（1）stop to do sth.停下来去做另一件事；stop doing sth. .停止正在做的事（2）try to do sth. 尽力做某事；try doing sth.尝试做某事（3）remember/forget to do sth.记住／忘记去做某事；remember/forget doing sth. 记得／忘记做过某事。下列动词（enjoy finish keep mind practice spend advise suggest allow）后面不能用不定式，用动名词作宾语 三、动词不定式作宾语补足语 有些动词，如tell, ask, want, invite, teach, like, call等可接带to的动词不定式作宾语补足语，构成tell/ask/want /call/invite sb. to do sth.结构。而表示使役动词和感官动词后面的宾语补足语时应省去to，（在被动语态中应加上to）。这些动词可归纳为“一感(feel)，二听(listen to, hear)，三让(let, make, have,，四看(look at, see, watch, notice)，半帮助(help)(即在动词help后面作宾语补足语时，to可有可无)”。 四、动词不定式作状语 动词不定式作状语主要用来修饰动词，表示目的they did lots of work to save the candas等。，表结果，常用结构有too + adj./adv. + to do sth. adj./adv.enough + to do sth，表原因be +形容词+ to do sth 如I am surprised to hear the news.为了强调目的，有时可以把动词不定式放在句首，或在不定式前加in order或so as to。 五、动词不定式作后置定语时，与被修饰的名词逻辑上有动宾关系。如果动词不定式是不及物动词时，则要带上与之搭配的介词，构成及物动词短语。动词不定式作后置定语常用于“have/has ＋某事＋to do”（some words to say, nothing to do,enough place to live）“It’s time to do sth.”等结构中。 六、特殊疑问词+不定式 特殊疑问词what when why how where 等可以和不定式连用在句子做各种成分。如How to use compurers is a problem. I can`t decide when to do it . 动词不定式专项训练题： 一、单项选择。 1. _______ is difficult to work out the maths problem. A. This B. That C. It D. Its 2. We decided _______ at the end of this month. A. travel B. not start out C. to leave D. going