中考英语动词不定式考点全攻略
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第十二章动词不定式思维导图知识梳理一、不定式概述动词不定式的基本形式是:“t o+动词原形”,有时可以不带to.不带to的不定式与动词原形同形,但它不是原形,而是一种语法形式.除基本助动词do和情态动词外,英语动词都有不定式形式.动词不定式没有人称和数的变化,在句子中不能作谓语,但可以担任除谓语外的任何成分-主语、表语、宾语、定语、状语和宾语补足语.动词不定式和它的宾语或状语构成不定式短语.不定式有时态、语态变化(以do为例):动词不定式的句法作用(一)作主语用作主语的动词不定式通常表示一种具体的、特定的行为,其谓语动词用第三人称单数形式.To obey the laws is everyone's duty.服从法律是每个人的职责.How to use the computer is a question.怎么使用计算机是一个问题.How to get there is not decided yet.怎样去那里还没决定下来.点拨(1)在很多情况下,常用it作形式主语,而把真实主语不定式放在谓语之后.It was difficult to sell my car.我的车很难卖掉.It's not known where to stay for the night.在哪里过夜还不知道.(2)如果要表示不定式的动作是谁做的,一般在不定式前加一个for短语.It will be a regret for us not to help him.我们没有帮助他是个遗憾.(3)在某些形容词(如kind, good, nice, wise, unwise, clever, silly, wrong, right, foolish, stupid, careless, considerate, rude, naughty, impolite等)作表语时,不定式前常可加一个以of引起的短语,来说明不定式指的是谁的情况.It would be rude of us to refuse their invitation.(我们)拒绝他们的邀请,会显得无礼.(二)作表语作表语,一般紧跟在系动词,如:be, seem, get等后面,用以说明主语.The question is when to start.问题是什么时候启程.You seem to have lost weight.你好像减肥了.What we have to do first is to find a solution.我们得做的第一件事是找出一个解决办法.点拨当不定式所作的表语仅用来说明主语的内容时,这个不定式只作单纯的表语,而不具有未来的含义.(三)作宾语能以不定式作宾语的动词很多,常见的有:agree, begin, decide, expect, forget, hope, learn, like, manage, pretend, start, try, want, wish等.Do you wish to see the manager?你想见经理吗?They decided to learn English hard.他们决定好好学英语.Don't forget to meet me at 6:00.别忘了六点钟和我见面.有些动词,如:tell, advise, show, teach, know, forget, learn , remember, show,understand, see, wonder, hear, find out, explain, decide, discuss等后面,常用带疑问词的不定式作宾语.We don't know who(whom)to ask.我们不知道问谁.We asked how to get to the station.我们问怎么到达车站.Have you decided where to go for your holidays?你们决定到哪儿度假了吗?I don't know whether to apply for the job or not?那份工作我不知道申请还是不申请?(四)作定语I have no time to waste.我没有时间可浪费.Let me find a place to park.我来找个停车的地方.He is always the first to come to work and the last to leave.他总是第一个来上班,最后一个走.点拨不定式修饰something, anything, nothing时,放在它们的后面.如果something, anything, nothing 有形容词来修饰,词序是something(nothing...)+形容词+不定式.My father had something to do.我父亲有事要办.Have you got anything important to buy?你有什么重要的东西要买吗?(五)作状语不定式常可用作状语,修饰动词,表示行为的目的、结果、原因等.一般放在被修饰词之后,但在表示目的时,为了强调也可放在句首.1.作目的状语为加强语气在否定式前还可加上in order或so as组成词组(即:in order to...,so as to...),作状语表示目的.To live a long and healthy life, we must learn to have a balanced diet.为了能过长寿而健康的生活,我们必须懂得吃均衡的食品.I stayed there so as to see what would happen.我留在那儿,为的是想看看会发生什么事.In order to help him, we would do everything we can.为了帮助他,我们愿意尽一切力量.2.作结果状语表结果,其逻辑主语通常亦是全句的主语.在“so...as to...”“such...as to..“enough to...”“only to...”以及“too...to...”等结构中的不定式皆表示结果.She is old enough to go to school.她已到了可以上学的年龄了.He was too drunk to drive home.他酩酊大醉,没法开车回家.3.作原因状语She trembled to think of the terrible accident.想到那可怕的车祸,她就不寒而栗.We jumped with joy to hear the news.听到这消息,我们都高兴地跳了起来.(六)宾语补足语1、有很多动词的后面都可以有不定式作宾语补足语常见的这类动词有:advise, ask, tell, help, wish, want, expect, forbid, persuade, press, request, teach, warn等.She asked her grandfather to play game with her.她请爷爷跟她一起做游戏.Mother told me to cook the meal.妈妈叫我做饭.2.有一些动词后用作宾语补足语的不定式通常不带to,这种动词有两类:一类是感觉动词,另一类是使役动词感觉动词:如feel, see, hear, watch, notice等.使役动词:如make, let, have等.Let me do it for you.让我来替你做.Don't let her go out.别让她出去.I made him work hard.我迫使他加劲干.(1)动词help之后,复合宾语中的不定式可带to,亦可不带to.在上述动词转换为被动结构时,其后的不定式必须带to.He was seen to enter the theatre.有人看见他走进了剧院.I was made to do my homework the whole night.我被迫整晚做作业.Can you help me (to) move this table?你能帮我移动一下这张桌子吗?(2)感官动词的宾语补足语有两种形式:不带to的不定式和动词-ing形式.I heard Meimei singing in her room when I went past.我路过的时候听见梅梅在房间里唱歌.(路过的瞬间正在唱,所以用singing)We often hear Meimei sing in her room.我们经常听见梅梅在房间里唱歌.(经常听见,用不定式)I saw him come in.I saw him coming in.两句话的意思都一样:我看见他进来.用不定式着重于动作的全过程,用动词-ing形式则是强调当时动作的进行情况.3.当谓语动词为think, make, find, consider, feel, regard等词,作宾语的不定式后面有宾语补足语时,常用it作形式宾语,而将真正的宾语放在补足语的后面I find it easy to learn English well.我发现要把英语学好很容易.三、不定式的主要句型及注意事项(一)不定式的否定式不定式的否定式:not+不定式,经常和ask(tell)sb. to do sth.句型连用.She asked me not to drive him to the station.她要我不要开车送他到车站.Try not to be late.争取不要迟到.Mary asked me not to give my pen to Jimmy.玛丽让我别把笔给吉米.She decided not to come here again.她决定不再到这儿来.点拨不定式的否定式和否定句的区别:I asked him not to open the door.我让他别把门打开.I didn't ask him to open the door.我没让他把门打开.(二)不定式的进行时态进行式:表示在谓语动词所表示的动作或状态发生时正在进行.It's nice to be sitting here with you.在这儿陪你坐着是非常愉快的.It is unwise for him to be talking that topic all the time.他老是谈论这件事,很不明智.(三)不定式的完成时态完成式表示在谓语动词的动作或状态发生时已经完成.She said she was sorry to have missed you.她说她没见到你很遗憾.He seemed to have visited our factory.他好像参观过我们的工厂.They appeared to have met before.他们看来以前见过面.(四)动词不定式的被动语态表示被动意义I didn't want to be told about it.我不想被告知这件事.Nothing seems to have been forgotten.似乎什么也没有被遗忘.The building is said to have been destroyed in a fire two years ago.据说这幢大楼两年前已毁于一场大火.在以某些形容词,如kind, good, silly, honest, bad, stupid, bold, clever, cruel,courteous, nice, rude, sensible, tactful, wise, wrong等作表语时,后面需用以“of+名词(或代词宾格)+不定式”结构,以说明不定式所表示的动作的执行者是谁(即of短语是不定式的逻辑主语).It's very good of you to come.谢谢你的光临.How silly of you (it is)to make such a mistake!你出了这样的差错,多傻啊!It's very kind of you to say so.多谢你这么说.在had better, had best, would rather, would rather...than, would sooner, would sooner...than, cannot but, do nothing but等结构后面的不定式要省略“to”.You had better write it in English.你最好用英文写.I would rather stay at home.我宁愿待在家里.好题精练一、用-ing形式或不定式的适当形式完成句子1.Do you enjoy_________ football?(play)2.Fred didn't have any money, so he decided_________ a job.(take)3.We're going out for dinner, Would you like_________ us?(join)4.The teacher reminded the students_________ their test paper on time.(finish)5.When I was tired, I enjoyed_________ TV.(watch)6.It was a nice day, so the old man agreed_________ for a walk.(go)7.I'm not in a hurry, I don't mind_________.(wait)答案:1.playing2.to take3.to join4.to finish5.watching6.to go7.waiting二、选择括号内所给词组完成句子,注意括号内“go+v.-ing形式”构成固定搭配的用法(go boating; go fishing; go dancing; go running; go skating; go hunting; go singing)1.She's a good dancer. She always_________ on Saturday.2.I've got a gun. I'll_________ with that strong hunter next weekend.3.“Where is Tim?”“He has. _________ He always runs in the morning.”4.We have enough fish to eat. Our father_________ every day.答案:1.goes dancing2.go hunting3.gone running4.goes fishing三、仿照示例改写下列句子示例:It is very interesting to play baseball.→ To play baseball is very interesting.1.lt was not polite to speak that way before Mr. Lee.____________________________________________________________________________________________ 2.It can be quite easy to travel by air.____________________________________________________________________________________________ 3.lt will be no problem to arrive there before noon.____________________________________________________________________________________________4.To make those strangers believe us was so difficult.____________________________________________________________________________________________ 5.To help Tom speak Chinese well is not at all easy.____________________________________________________________________________________________ 答案:1.To speak that way before Mr. Lee was not polite.2.To travel by air can be quite easy.3.To arrive there before noon will be no problem.4.It was so difficult to make those strangers believe us.5.It is not at all easy to help Tom (to) speak Chinese well.四、选择填空1. _________ the bookstore, he stopped_________ a few books.A. Passing; buyingB. Passing; to buyC. To pass; buyingD. Having passed; to buy2.Bruce,look at your dirty shoes, You'd better_________ them right now.A. washedB. washingC. washD. to wash3. _________ the room, I found the computer_________.A. Entering; stealingB. Entering; stolenC. To enter; stealD. To enter; stealing4.We've worked hard for nearly one hour. Let's stop_________ a rest now.A. haveB. to haveC. havingD. have had5.My mother always tells me not_________ to the net bars(网吧).A. goB. to goC. goesD. going6.The teacher asked us_________ English for half an hour in the morning.A. reads B reading C. to read D. read7.You will have to get up early tomorrow. Stop_________ TV, Peter.A. watchesB. watchC. to watchD. watching8.I find it hard_________ English well.A. learnB. learningC. to learnD. learns9.The teacher asked John_________ a short talk in our class meeting.A. giveB. to giveC. gaveD. giving10.The girl was too poor_________ a houseA. to buy; to live inB. to buy ;to liveC. buy; to liveD. buying; living in11.It was very late at night, but Mr. Brown still went on_________.A. works B .worked C. working D. work12.Remember_________ him about it before he goes away.A. tellB. to tellC. tellingD. to telling13.Lin Tao is strong enough_________ the big box.A. carryB. to carryC. carryingD. carries14.Her mother told her_________ in bed.A. not readB. not to readC. don't readD. to not read15.When class began, we stopped_________ to the teacher carefully.A. listeningB. listenC. listens D .to listen16.You'd better_________ the cinema by bus.A. don't goB. to goC. to go toD. go to17.What did the manager_________ you to_________ at the meeting?A. tell; sayB. ask; speakC. tell; speakD. ask; talk18.Tom was let_________ in the gate house.A. waitB. to waitC. waitingD. to have waited19.Mr.Hu has enough time_________ the job in two days.A. finishB. to finishC. finishingD. finished20.Look,the building_________ is our library.A. is repairedB. being repairedC. repairingD. to be repairing21. _________ no money, I could not buy this coat.A. HaveB. HavingC. To haveD. Have had22.The teacher has something important_________ us.A. to tellB. tellsC. tellingD. told23.Li Ming didn't know_________ next.A. to do whatB. what to doC. how to doD. what do24.I'd love_________ to your birthday party.A. comeB. cameC. to comeD. comes25.It took me two hours_________ by bus.A. to get thereB. to get to thereC. get thereD. get to there答案:1-5BCBBB 6-10CDCBA11-15CBBBD 16-20DABBB21-25 BABCA五、改正下列句子的错误1.He seems to not hear from her.____________________________________________________________________________________________ 2.I hope see you soon.____________________________________________________________________________________________ 3.I made them to give the money back.____________________________________________________________________________________________ 4.The scientist gave us some advice on how learning English.____________________________________________________________________________________________ 5.No one noticed him to leave the room.____________________________________________________________________________________________ 6.Have you given up to smoke?____________________________________________________________________________________________ 7.We found him waited at the school gate.____________________________________________________________________________________________ 8.Why not to turn off the light?____________________________________________________________________________________________ 9.She didn't want me go.____________________________________________________________________________________________ 10.I don't know to swim.____________________________________________________________________________________________ 11.China is a developed country belonging to the third world.____________________________________________________________________________________________ 12.It's getting dark. We have to find a hotel to live.____________________________________________________________________________________________ 13.He said he had an important meeting to attended.____________________________________________________________________________________________ 14.They don't allow that people smoke.____________________________________________________________________________________________ 15.It's difficult sell my car.____________________________________________________________________________________________ 答案:1.He seems not to...2.I hope to see...3.I made them give...4....how to learn...5....him leave...6....given up smoking?7...him waiting...8.Why not turn off...9.She didn't want me to go.10.I don't know how to swim.11....a developing...12....to live in13....to attend.14. ...people to smoke.15...to sell my car.。
初三英语动词不定式知识精讲动词不定式一. 构成:to + 动词原形二. 特征: 1. 不定式具有名词、形容词和副词的特征,同时也保留动词的特征,它有自己的宾语和状语,来构成不定式短语。
eg .I want to go there by bike .2. 动词不定式没有人称和数的变化,但有时态的变化。
(1)动词不定式的一般式:“to + 动词原形”eg .I am glad to meet you again . I want to go to the concert .(2)动词不定式的完成式:“to have + 动词的过去分词”。
eg .I am sorry to have kept you waiting for a long time .三. 用法:1. 作主语(如果不定式短语过长,可以把此短语放在句尾,主语的位置可以用it 来替换,叫做形式主语)eg .⎩⎨⎧.surfing go to exciting is It .exciting is surfing go To ⎩⎨⎧.building new the up set to half a and year a them take will It .half a and year a them take will building new the up set To ⎩⎨⎧.well subjects the all learn to important is It .important is well subjects the all learn To ▲在it 作形式主语的句子中,某些形容词之后,不定式之前常带有for sb ,这类形容词有:easy ,difficult ,hard ,interesting ,necessary 等。
而在某些形容词之后,不定式之前常带有of sb ,这类形容词有:nice ,good ,kind ,clever ,foolish ,careful ,polite 等。
初中英语动词不定式十大考点解析动词不定式是初中英语的语法重点之一,也是每年中考英语试题的考点之一。
它是动词的一种非谓语形式,没有人称和数的变化,不能单独作句子的谓语。
其构成形式为"to+动词原形",to为动词不定式的符号,本身无意义。
动词不定式具有两大特点:1.具有动词的特点,因此,后面可以跟表语、宾语或状语,构成动词不定式短语。
2.具有名词、形容词或副词的特点,可以在句子中用作主语、宾语、宾语补足语、状语、定语、表语及同位语等。
下面以近几年全国部分省市的中考英语试题为例,对不定式的难点以及它在中考英语中的考查点,作一简要的总结和分析,供同学们学习时参考。
一、动词不定式作主语1. It's our duty _________ the room every day.A. to cleanB. cleanedC. cleanD. cleans(甘肃省)2. It's hard for us _________ English well.A. learnB. learnsC. to learnD. 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,ofB. of,forC. to,forD. 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。
动词不定式知识点一、动词不定式的基本概念。
1. 定义。
- 动词不定式是由“to+动词原形”构成(有时可以省略to),它在句中不能单独作谓语,但具有名词、形容词和副词的特征,可以在句中作主语、宾语、表语、定语、状语和补语等成分。
例如:- To see is to believe.(作主语和表语,“眼见为实”)2. 形式。
- 一般式:to do,表示动作与谓语动词同时发生或发生在谓语动词之后。
例如:I want to go to the park tomorrow.(go这个动作发生在want之后)- 进行式:to be doing,表示动作正在进行,与谓语动词同时发生。
例如:He seems to be reading a book.(read这个动作正在进行,与seem同时)- 完成式:to have done,表示动作发生在谓语动词之前。
例如:I'm sorry to have kept you waiting.(keep you waiting这个动作发生在am sorry之前)- 完成进行式:to have been doing,表示动作从过去一直持续到现在,并且可能还会继续下去。
例如:She is said to have been working on this project for years.二、动词不定式在句中的用法。
1. 作主语。
- 直接作主语时,常用it作形式主语,而将真正的主语(动词不定式)后置。
例如:- It is difficult to learn English well.(真正的主语是to learn English well,it是形式主语)- 但是,当动词不定式作主语的句子中有表语形容词时,也可以直接将动词不定式置于句首。
例如:- To be honest is very important.2. 作宾语。
- 动词不定式可以作某些及物动词的宾语,常见的这类动词有want, hope, wish, decide, manage, expect等。
中考英语动词不定式考点全攻略(附答案)动词不定式历来是中考英语命题的热点之一。
它是动词的一种非谓语形式,没有人称和数的变化,不能单独作句子的谓语。
其构成形式为"(not)to+动词原形"。
考点攻略一:动词不定式作主语1)动词不定式直接用在主语位置:To see you is always a pleasure.2)如果主语较长,则可以用it作形式主语,而将真正的主语(不定式)置于后面。
①It is +形容词+(of sb.) to do sth. 此处常用careless, clever, foolish, honest,kind, nice, rude, stupid, silly, wrong, wise等形容词,与介词of搭配,这些形容词常表述不定式逻辑主语的属性或性质。
It’s brave of you to jump into the river to save the boy!②It is +名词或形容词+ (for sb.)to do sth. 此处常用necessary, hard, difficult,easy, important, impossible等形容词,与介词for搭配,表示不定式的动作或行为的性质。
It is our duty to keep our classroom clean. It is important for us to protect the environment.③It takes sb. some time to do sth.It usually takes us about two and a half hours to travel from Shanghai to Japan.考点攻略二:动词不定式作宾语其后常接不定式作宾语的动词有:agree, afford, choose, decide, expect, plan, promise, manage, hope, wish, want, seem, refuse, fail等。
史上最完整的动词不定式用法规律知识点总结动词不定式是英语中的一种非谓语动词形式。
它可以充当名词、形容词或副词,具有广泛的用途和特定的语法规则。
本文将为您总结史上最完整的动词不定式用法规律知识点,帮助您更好地理解和运用这一语法结构。
一、动词不定式的基本结构动词不定式由“to + 动词原形”构成,例如:to study、to eat、to sleep 等。
它可以作为名词、形容词或副词在句子中进行修饰或起其他功能。
二、动词不定式作为名词动词不定式可以作为名词在句子中担任主语、宾语、表语、同位语等。
1. 作主语:To learn a foreign language is beneficial.学习一门外语是有益的。
2. 作宾语:She wants to go shopping.她想去购物。
3. 作表语:His dream is to become a doctor.他的梦想是成为一名医生。
4. 作同位语:His goal, to win the championship, motivates him to practice every day.为了赢得冠军,他每天都在努力。
三、动词不定式作为形容词动词不定式可以作为形容词修饰名词,通常在名词之前。
1. 修饰名词:I have a book to read.我有一本要读的书。
2. 修饰人:She is the person to ask for help.她是可以求助的人。
四、动词不定式作为副词动词不定式可以作为副词修饰动词、形容词或副词,表示目的、结果、原因等。
1. 修饰动词:He bought a new computer to play games.他买了一台新电脑来玩游戏。
2. 修饰形容词:She is too tired to continue working.她太累了,无法继续工作。
3. 修饰副词:He speaks English fluently enough to communicate with foreigners.他的英语说得足够流利,可以与外国人交流。
中考英语总复习之动词不定式一、基本概念: 动词不定式是不被限定的动词,不受人称、数量和时态的变化而变化,不定式属于非谓语动词形式。
不定式表示的是将来(即没有做的事),将来发生的事情还不确定,故简称为不定式。
如:I want to make much money.我想赚很多钱。
to make much money,赚很多钱,接下来我能否赚到很多钱,还不确定,所以不定式表示的是将来。
二、基本结构:1.肯定式:to + do (动词原形)2.否定式:not to +do(动词原形)三、基本用法:在句中除了不能做谓语以外,能够作其他如何成分。
还能拥有自己的宾语和状语,构成不定式短语。
1.作主语:常用It + be + 形容词+ ( of / for sb. ) + to do sth.结构,也可直接用不定式(to + 动词原形)做主语。
如:It`s easy for me to study English well.=To study English well s easy for me.2.做宾语:常见的动词有:want, agree, choose, try, decide, hope, wish, learnI want to go to senior high school.3.作表语:常用在be动词等系动词后面。
His job is to repair computers.He seems to be interested in the game.4.作定语:放在被修饰的名词或代词之后,如果不定式与所修饰的名词有动宾关系,这个不定式必须是及物动词。
如:I was the first to come.He has no wine to drink. (动宾关系)5.作状语:1). 表目的:She was here to visit her daughter.2). 表原因:I`m sorry to trouble you.3). 表结果:The box is too heavy to carry.4). 表示程度:This classroom is big enough to hold 50 students.6.作宾语补足语:1).必须使用to的动词有:ask, tell, order, take, invite, want, wish, follow, wait for, teach, would like, allow sb. to do sth.2). 不能使用to的动词有:have, make, let, see, watch, hear, notice sb. do sth 注意:在主动语态中,to 要省略;而在被动语态中,to 必须加上3). 可以使用to,也可以不用to的动词:helpHe helped me(to)clean the room.7. 下列动词后面不能跟动词不定式,只能跟动名词(动词的–ing 形式)作宾语:enjoy, finish, mind, excuse, practice, keep, miss, spend, can’t help,be busy,be worth, keep on, carry on8. 感官动词后面的动词不定式要省去不定式符号to. 如:I saw someone take your book just now.9. 下列动词后面可以跟动词不定式也可以跟动名词:begin, start, like, love, hate, prefer, plan , forget, remember, stop, see, hear, go on注意:had better (not) do sth,would rather (not) do sth (不用to)10. 动词不定式的否定形式直接在不定式前面加to. 如:He told me not to smoke here.四.动词不定式特殊用法:1.不定式的进行式:to be doing , 谓语所表示的动作和不定式所表示的动作同时发生。
动词不定式一. 重点难点精讲动词不定式是一种非限定动词,分为带to的不定式和不带to的不定式。
动词不定式不能单独用作谓语动词,不受主语的人称和数的限制,但它具有动词的特点:可以有自己的宾语和状语,既有一般式,又有进行式、完成式及被动语态的变化。
动词不定式的否定形式是在不定式前面加not,如:to make的否定形式为not to make。
(一) 作主语To say something is one thing;to do is another thing. 说是一回事,做是另一回事。
To see is to believe. 眼见为实。
不定式短语作主语时,常用it作形式主语,真正的主语不定式要放在后面。
例如:It is great fun to swim in the river in summer. (=To swim in the river in summer is great fun.)夏天在河里游泳真是乐事。
(二) 作表语My dream is to become a scientist. 我的理想是当一各科学家。
Her job is to look after the sick children. 她的工作是照看那些生病的孩子。
(三) 作宾语不定式作宾语的情况较多,而且又是中考考查的重点。
许多及物动词后面都可以接动词不定式作宾语。
这些动词有:agree(同意), want(想要), decide(决定),hope(希望), like(喜欢), learn(学习), try(试图), wish(希望), begin(开始), start(开始)等。
例如:I am learning to drive a car. 我在学开汽车。
注意:1.不定式短语作宾语时,如果还带有宾语补足语,通常用it作形式宾语,而不定式则放在宾语补足语后。
例如:I find it pleasant to work with her. 我发现和她一起工作很愉快。
中考动词不定式记忆口诀篇一:后接动词不定式作宾语的动词口诀记忆一览表后接动词不定式作宾语的动词口诀记忆一览表篇二:英语动词不定式口诀及解析动词的不定式:①不定式有标记,to与动词连一起。
②没有人称数变化,动词特点它具备。
③主宾定状表补语,唯独作谓不可以。
④not 加上不定式,否定结构要牢记。
⑤疑问词与不定式,构成短语有意义。
⑥仔细推敲多思考,准确判断有依据。
解析:①“to+动词原形”是它的基本构成形式,即不定式的标记。
②它没有人称和数的变化,不管主语是任何人称,单数还是复数,动词不定式都没有变化。
但它仍保留动词的特点,可以有自己的宾语或状语。
③它具有名词、形容词和副词三大特点,所以,它在句中可以作主语、宾语、定语、表语、状语和宾补。
④“not +动词不定式”是它的否定形式,不要受其他否定式的影响,要记住规律。
⑤疑问代词what, who, whom, which和疑问副词where, when, why , how加上不定式在句中可以做主语,宾语、表语、状语。
⑥通过以上分析,只要仔细研究,把不定式的功能用法搞清楚,在应用时就能作出准确的判断。
动词不定式结构及用法动词不定式在中学英语中应用非常广泛,一方面在句中可起名词、形容词或副词的作用,同时也可在句中作主语、宾语、定语、状语和宾语补足语。
动词不定式的形式一般是to +动词原形,但to有时要省去。
而动词不定式在具体运用时用不用to,取决于谓语动词的用法。
现就以下几方面介绍如下。
一、不定式结构1. 带to的不定式结构能直接跟带to的不定式结构的动词主要有:want, ask, tell, hope, learn, try, decide, forget, remember, like, love, stop, go, e等。
如:I want to go to the movies with you.我想跟你一起去看电影。
Don’t forget to turn off thelight before you leave.在你离开之前别忘了关灯。
动词不定式动词不定式是非谓语动词的一种形式。
其结构是“to+动词原形”,否定形式为“not+to+动词原形”。
动词不定式在句中不充当谓语,不受主语的限制,但有时态和语态的变化。
动词不定式是中考的必考点之一。
现结合最近几年的中考真题,全面梳理动词不定式的考点。
一、动词不定式做主语1. 动词不定式直接做主语。
如:To swim in the river is dangerous.在河里游泳是很危险的。
To ask the teacher for help is necessary.向老师寻求帮助是有必要的。
2.下列特殊句型中的动词不定式做真实主语。
▲“It is+形容词+for sb.to do sth.”意为“做某事对某人来说是……的”。
其中句中的形容词多为描述性的词语,不对人或物的品格进行评价,如difficult,easy,hard,important,dangerous,impossible等。
例1:It is imponant( ) people ( )good manners.A. for;to learnB. of;to learnC. for;learnD. of;learn解析:A。
句中的important是描述性形容词,因此用介词for,后接动词不定式做真实主语。
故选A。
▲“It is+形容词+of sb.to do sth.”意为“做某事对某人来说是……的”。
其中句中的形容词用于描述人的性格、品质,如kind,good,nice,right,wrong,clever,careless,polite,foolish等。
例2:—Let me help you carry the box,Granny—Thank you,Li Lei.It’s very nice( )you( ) me.A.of;to helpB. for;to helpC. of;helpingD. for;helpingB.解析:A。
中考英语动词不定式及其用法讲解+练习1.动词不定式的基本概念:动词不定式的基本形式是“to+动词原形”,有时可以不带to。
动词不定式没有人称和数的变化,在句中不能做谓语,但可以有自己的宾语和状语。
动词不定式跟它的宾语和状语构成了不定式短语,例如:to read the book, to speak at the meeting等。
2.动词不定式的用法:动词不定式具有名词,形容词和副词的特性,因此可在句中作主语,表语,宾语,宾语补足语,状语和定语。
句子用法:作主语:eg:1)To take part in sports is important.2)To see is to believe.动词不定式做主语时常常由it来代替它,做形式主语,而动词不定式放在句末。
eg: It’s great to see you again.It is important to learn English well.It was rewarding to take part in this exchange programmeIt will take us a month to go on study trip to New York.It is necessary for governments to control the population growth.做表语:eg:The best way is to pratice.My dream is either to be a diplomat or to be a teacher of English .A popular use of the computer is to send a e-mail.Her wish is to become a famous star.The best way is to read the play before you see it.做宾语:eg: We are talking about how to solve the problem.I think it not difficult to keep reading English every morning.做宾补:eg: We all expect him to win the contest.Our teacher told us to listen carefully in class.注意:感官动词,或使役动词+宾语+无to的不定式Is Jack in the library ?Maybe I saw him go out with some books just now.Let those in need understand that we will go all out to help them.做定语:Liu Yang is the Chinese woman astronaut to enter the space.You are the last one to win the price.In the future , human will have less work to do.Why don’t you go out to play Rose?I’m afraid I can’t . I have a lot of homework to do.做状语:动词不定式做状语可以修饰动词,一般在句中做原因,目的和结果状语,动词不定式做状语可单独放在句首,句中或句末。
中考英语语法动词不定式知识点以下是中考英语语法中常见的动词不定式知识点:1.动词不定式的结构:- to + 动词原形:例如 to eat, to sleep。
- 动词原形:用于口语中,或在一些情况下省略 to,例如 Let me go。
2.动词不定式作主语:- It + be + 形容词 + to do:例如 It is important to study hard.- To do 表达强调:例如 To meet her is my dream.3.动词不定式作宾语:- 动词 + to do:例如 I want to play basketball.- 动词 + 不定式,如希望 hope, plan, decide, promise等:例如 I hope to see you again.4.动词不定式作补语:- 动词 + 名词/形容词 + to do:例如 She is happy to help her friend.- 动词 + 不定式,如 want, wish, like, love, hate, prefer等:例如 I want you to clean your room.5.情态动词后接动词不定式:- can, could, may, might 后接动词不定式表达能力或可能性。
- must, have to, need to 后接动词不定式表达必要性或需要。
6.动词不定式的否定形式:- not + to do:例如 I decided not to go to the party.- 动词 + not to do:例如 She asked me not to tell anyone.7.动词不定式形式的变化:- 过去式:to do → to h ave done- 完成式:to do → to be done- 进行式:to do → to be doing以上只是动词不定式的一些基本知识点,但需要根据具体语境和句子结构进行灵活运用。
概念:动词不定式由to+动词原形构成。
这里的to是不定式标志,没有词义。
不定式具有名词、形容词或副词的某些语法功能,又有动词的时态和语态的特点及作用。
可以做主语、宾语、宾语补足语、表语、定语、状语。
一、作主语动词不定式作主语时,句子的谓语动词常用单数,其位置有以下两种:(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,常用于下列句式中.如:①It+be+名词+to doIt's our duty to take good care of the old.②It takes sb+some time+to doHow long did it take you to finish the work?③It+be+形容词+b+to doIt is difficult for us to finish for swriting the composition in aquarter of an hour。
在句型③中,常用表示客观情况的形容词,如:easy,difficult,hard,important,possible,impossible,comfortable,necessary,better; the first,the next,the last,the best,too much,too little,not enough④It+be+形容词+of sb+to doIt is stupid of you to write down everything the teacher says.在句型④中,常用careless,clever,good,foolish,honest,kind,lazy,nice,right,silly,stupid,wise rude,clever,foolish,thoughtful, thoughtless(欠考虑的;不考虑的),brave,considerate(考虑周到的),selfish(自私的)等表示赞扬或批评的词。
中考动词不定式详解(一)动词不定式的构成不定式的基本形式:to+动词原形,有时可以省略to。
这里的to是不定式符号,本身无词义。
动词不定式的否定形式是:not(+to)+动词原形。
(二)动词不定式的句法功能1.不定式作主语不定式作主语时,常用it作形式主语,而将真正的主语放在句末,其结构为:It+be+adj.(+for/of sb)+动词不定式Eg:It is useful to learn English well.学好英语是有用的。
2.不定式作宾语(1)一些谓语动词后面只能用不定式作宾语,常见的这类词表示命令、打算或希望,如:would like,want,wish,hope,decide,plan,expect等。
Eg:Would you like to see a film tonight?你今晚想去看电影吗?(2)在find,think后跟不定式作宾语时,常用it作形式宾语,而将真正的宾语放在后面。
Eg:I find it easy to read English every day.我发现每天读英语很容易。
注意:不定式常和疑问词what,which,when,where,how连用作宾语,相当于一个宾语从句。
Eg:He didn’t know where to go.(where to go=where he should go)他不知道要去哪里。
3.不定式作宾语补足语tell,ask,want,allow,get,encourage等后常跟动词不定式作宾语补足语。
Eg:Lucy asked him to turn down the radio.露西让他调小收音机的音量。
注意:还有一些使役动词和感官动词也用不定式作宾补,这时不定式要省略to。
这些动词有:一感(feel)、二听(hear,listen to)、三让(let,make,have)、四看(look at,watch,see,notice)。
中考英语“动词不定式”的基本用法总结动词不定式在句子中可充当主语、宾语、表语和宾语补足语和状语(包括目的状语,结果状语和原因状语。
)1. 作主语To dance with you makes me happy.和你跳舞令我高兴。
It is difficult to drive in the mountains. (=To drive in the mountains is difficult.)在山里开车很困难。
2. 作宾语(1)后接不定式作宾语的及物动词多是表示“意愿” “企图”等的动词,如:hope, want, wish, desire, like, decide, try, promise, refuse.I want to talk with her.我想和她谈谈。
She has decided to go.她已决定要走。
(2)在feel, find, think, consider, make等动词后如果是不定式作宾语,而补语是形容词,则通常用it作形式宾语,而把真正的宾语即不定式移至形容词之后。
如:I find it impossible to forget her.我发现忘掉她是不可能的。
He thought it necessary to take an umbrella.他认为带把伞是必要的。
3. 作表语Her wish is to be a teacher.他的愿望是成为一名教师。
Your duty is to clean the classroom.你的任务是打扫教室。
4. 作宾语补足语He wants me to come earlier.他想要我来得更早些。
The policeman ordered them to turn around.警察命令他们转过身。
5. 作目的状语She opened the window to let some fresh air in.她打开窗子好让新鲜空气进来。
初三英语解读动词不定式十大考点学法指导http://动词不定式是初中英语中的一个重要语法知识点,也是各省市中考命题的高频热点。
纵观近年全国部分省市的中考试题,不难发现中考对这一知识点的考查主要集中在以下十个方面:一. 考查动词不定式的基本构成【考点小结】动词不定式是动词的一种非谓语形式,不受人称和数的变化限制,它由“不定式符号(to)+动词原形”构成。
其否定式常在to前加not或never构成,句型ask/ tell sb. not to so sth. 是中考命题的热点。
【中考题例】1. I had a bad cold. The doctor asked me _________ in bed. (2006北京市)A. stayingB. to stayC. stayedD. stays2. My parents often tell me _____ too much junk food. It’s bad for my health. (2006山西省)A. not to eatB. don’t eatC. not eat现场拆招:1. 选B。
要求某人做某事句型为ask sb. to do sth。
2. 选A。
考查tell sb. not to do sth. 结构。
二. 考查动词不定式作主语【考点小结】动词不定式作主语时,常用it作形式主语,而将不定式后置。
如要说明动词不定式是动作的执行者,可在不定式前加一个介词for引导的短语;但当表语是kind, nice, clever等描述动作执行者的性格、品质的形容词时,则应在不定式前加一个of引导的短语,而不可以用for引导的短语。
【中考题例】3. It’s a good habit ______ breakfast every day. (2006陕西省)A. hadB. haveC. hasD. to have现场拆招:选D。
句中it作形式主语,要求用动词不定式作真正的主语。
中考英语动词不定式知识归纳总结·最新一、定义①动词不定式结构为“to+动词原形”,其中to是动词不定式的符号,称为小品词;②动词不定式没有人称和数的变化;③在句子中可以用作主语、表语、宾语、补足语、定语、状语。
二、功能1. 作主语(1)e.g.To be a doctor is hard.To learn English well is not easy.如果要想引出动词不定式的动作是谁做的,可以在动词不定式前面加介词for/of引导的短语,称为不定式的复合结构。
例:e.g. It’s good for us to read English aloud in the morning.It is kind of you to help us so much.(2)动词不定式作主语时,为了避免句子的头重脚轻,可以用“it”作形式主语,而把真正的主语--动词不定式放在句子的后部。
e.g. It is hard to be a doctor.It is not easy to learn English well.It’s important to plant trees in spring.2. 作表语e.g. His work is to drive a car.My job is to feed animals.Her ambition is to be a doctor.To see is to believe.Seeing is believing.What we had to do is find another person to help us.(前有do后省to)3. 作宾语⑴只能接不定式做宾语的动词:plan, offer, afford, seem, appear, care, volunteer, arrange, dream, trouble, expect, happen, beg; try/do one's best, go all out, give sb. a hand, have no choice but, make up one's mind巧记:三个希望(hope、wish、long)两答应(agree、promise),两个要求(ask、want)莫拒绝(refuse),设法(manage)学会(learn)做决定(decide/determine),不要(fail)假装(pretend)在选择(choose)。
中考英语动词不定式考点全攻略
动词不定式历来是中考英语命题的热点之一。
它是动词的一种非谓语形式,没有人称和数的变化,不能单独作句子的谓语。
其构成形式为"(not)to+动词原形"。
考点攻略一:动词不定式作主语
1)动词不定式直接用在主语位置:To see you is always a pleasure.
2)如果主语较长,则可以用it作形式主语,而将真正的主语(不定式)置于后面。
①It is +形容词+(of sb.) to do sth. 此处常用careless, clever, foolish, honest, kind, nice, rude,
stupid, silly, wrong, wise等形容词,与介词of搭配,这些形容词常表述不定式逻辑主语的属性或性质。
It’s brave of you to jump into the river to save the boy!
②It is +名词或形容词+ (for sb.)to do sth. 此处常用necessary, hard, difficult, easy, important,
impossible等形容词,与介词for搭配,表示不定式的动作或行为的性质。
It is our duty to keep our classroom clean. It is important for us to protect the environment.
③It takes sb. some time to do sth.
It usually takes us about two and a half hours to travel from Shanghai to Japan.
考点攻略二:动词不定式作宾语
其后常接不定式作宾语的动词有:agree, afford, choose, decide, expect, plan, promise, manage, hope, wish, want, seem, refuse, fail等。
I didn’t expect to see you here.
在某些复合宾语中,动词有find, consider, think, make, feel,常先用it代替不定式,作形式宾语,而把不定式放到后面去。
I find it impossible to finish the task on time.
考点攻略三:动词不定式作宾语补足语
动词不定式作宾补,即“动词+宾语+(not)to do sth.”,接不定式作宾补的常见动词有:advise, allow, ask, cause, expect, beg, encourage, get, help, invite, teach, order, remind, tell, want, wish, warn等。
My parents always tell me not to be late for school.
考点攻略四:动词不定式作表语
不定式作表语一般位于系动词之后,表示具体动作,特别是表示将来的动作;若主语是aim, duty, hope, idea, job, plan, problem, purpose, wish等名词,不定式作表语是对主语起补充说明作用。
It is said that they are to visit China next month. My wish is to become a scientist like Einstein. 考点攻略五:动词不定式作定语(常用于名词之后)。
由only, last, next,序数词或形容词最高级修饰的名词常用不定式做定语,
Tom is always the first student to arrive at school.
注:动词不定式to后所接动词若是不及物动词,而不定式与其修饰的词之间有动宾关系时,此不定式后要加相应的介词。
We haven’t decided which hotel to stay at. I need a pen to write with.
考点攻略六:动词不定式作目的状语。
如:
To keep fit, students are advised to do morning exercises.
so as to (不可用于句首使用),in order to也可以引导目的状语。
I walked slowly on the icy road in order not to fall down.
考点攻略七:动词不定式与疑问词连用。
疑问代词who, what, which和疑问副词when, where, how等后加动词不定式,构成不定式短语,可在句子中作主语、宾语、表语等成分。
如:The problem is how to get there on time.
注:当主句谓语动词know,tell,forget,remember,learn,explain等后接疑问词(连接代词/副词)引导的宾语从句,且该从句的主语与主句的主语一致时,宾语从句可转换成“疑问词(连接代词/副词)+不定式(短语)”形式。
We don’t know what we should do next. = We don’t know what to do next.
考点攻略八:动词不定式to 的省略情况
1)、在有些使役动词及感官动词后可用省略to的动词不定式,如let, make, have, hear, see, feel, smell, hear, watch等,但在被动结构中,to不可省略。
The teacher makes me rewrite the composition.
2)、在下列结构后常用不带to的动词不定式:had better, would rather, cannot help,等。
I’d better go now, or I’ll miss the train.
3)、在why not结构中,其后的动词不定式to要省略。
如:Why not send those books back?
自我测试
I. Choose the best answer.
1. You had better ______ because you have to drive back home.
A) not drinking B) not drink C) don’t drink D) not to drink
2. I can’t tell you what she said. I’ve promised ______ it a secret.
A) keep B) to keep C) keeping D) kept
3. Doctors warned people stay outdoors for a long time in foggy weather.
A) not B) don’t C) to not D) not to
4. ------I will go to Harbin for my summer vacation. What about you?
------I haven’t decided where ________.
A) go B) went C) going D) to go
5. The boy is often heard in the music room. He sings very well.
A) practise singing B) to practise singing C) practised singing D) practise to sing
II. Rewrite the following sentences as required.
6. The girl didn't know where she could find her mother. (改成简单句)
The girl didn't know where_______ _______ her mother.
7. The man is so energetic that he can be our leader. (改为简单句)
The man is energetic __________ __________ be our leader.
8. You should memorize your password. It’s very important. (合并为一句)
It’s very important for you ________ your password.
答案与解析:
1.答案为B。
had better后接动词原形,否定形式在had better后加not。
2.答案为B。
promise to do sth.答应或许诺做某事。
3.答案为D。
warn sb. not to do sth.警告某人不要做某事。
4.答案为D。
此处考查的是疑问词(连接代词/副词)+不定式(短语)形式的用法。
5.答案为B。
make, hear, see等词在被动结构中要加to。
6.答案为to find。
宾语从句可转换成“疑问词(连接代词/副词)+不定式(短语)”形式。
7.答案为enough to。
so…that…结构可以与enough to 同义转换。
8.答案为to memorize。
It is +名词或形容词+ (for sb.)to do sth为固定表达结构。