中考复习-不定式用法归纳

初中英语语法知识精讲之不定式考点的归纳和总结一、不定式的语法特点不定式可以作主语、宾语、表语、定语、状语等。

不定式可以作主语、宾语、表语、定语、状语等，这是不定式语法特点之一。

下面我们一一列举:作主语不定式作主语通常表示目的或原因。

例如:"To be or not to be, that is the question."(生存还是毁灭，这是个问题。

)作宾语不定式作宾语通常表示目的或原因。

例如:"I need to study hard to pass the exam."(为了通过考试，我需要努力学习。

)作表语不定式作表语通常表示主语的状态或特征。

例如:"The sky is blue."(天空是蓝色的。

)作定语不定式作定语通常表示主语的特征或状态。

例如:"The book on the shelf is interesting."(书架上的书很有趣。

)作状语不定式作状语通常表示时间、地点、原因、方式等。

例如:"I will go to the park tomorrow."(我明天会去公园。

)不定式可以由动词原形、动名词、不定式符号to和主语构成。

不定式可以由动词原形、动名词、不定式符号to和主语构成，这是不定式语法特点之一。

下面我们一一列举:动词原形不定式可以由动词原形构成，例如:"I want to eat pizza."(我想吃披萨。

)动名词不定式也可以由动名词构成，例如:"She enjoys playing soccer."(她喜欢踢足球。

)不定式符号to不定式还可以由不定式符号to和主语构成，例如:"To be or not to be, that is the question."(生存还是毁灭，这是个问题。

)主语不定式还可以由主语构成，例如:"The teacher gave the students a task to complete."(老师给学生布置了一个任务完成。

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.。

动词不定式的用法及语法功能不定式中所谓“不定”，是指不受主语的人称和数的变化的影响。

动词不定式的基本形式有两种，一种是带to的不定式，另一种是不带to的不定式。

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，定语，状语和宾语补足语。

动词不定式仍然保留动词的特点，即有自己的宾语和状语，也就是说，动词不定式和它的宾语或状语构成它自己的不定式短语。

不定式的语法功能不定式在句子中有各种作用，不定式具有名词，形容词和副词的特征。

不定式作名词的用法不定式在句子中的作用，有时和名词相同，在句子中担当主语，表语，宾语和宾语补足语。

不定式作主语：常用句型 It is … to …不定式作主语的句子通常用 It is … to+不定式的句型来代替，在句子中it 作形式主语，真正的主语式后面的动词不定式。

在这里，不定式被视为第三人称单数，所以动词要用 is (现在时) 或was (过去时)。

如以下例句所示：It is important to learn English well.It is dangerous to play in the street.It is hard to say goodbye with you.不定式作表语：To do 不定式作表语e.g. The best plan is to leave here. 最好的计划是离开这里。

不定式作宾语：不定式在及物动词后作宾语，常见的及物动词有：Ask, decide, begin, fail, continue, forget, hate, help, like, long, want, wait, manage, need, start, pretend, refuse, try, dare, agree, know, wish, afford 等不定式作副词的用法：不定式有时起副词作用，修饰动词或形容词，在句子中相当于状语，表示目的和原因表目的：-不定式在不及物动词后担当状语e.g. My mom came to see me yesterday evening.-针对why的疑问句回答时，如果表示目的，可用不定式来代替。

初中语文不定式用法总结不定式是英语中一个重要的语法结构，它也存在于汉语中，在句子中可以作为动词、名词、形容词三种不同的成分。

以下总结初中语文中不定式的用法。

1. 不定式作动词不定式作为动词时，可以与情态动词、助动词连用，表示将来的动作或一种目的。

例句：我想去看电影。

I want to watch a movie.他会唱歌。

He can sing.你需要帮助吗？Do you need help?2. 不定式作名词不定式作为名词时，可作主语、宾语、表语、同位语、宾补等多种用法。

例句：学会做菜是我的梦想。

Learning how to cook is my dream.（主语）我们必须尽早完成作业。

We have to finish the homework assoon as possible.（宾语）我的任务是帮助你研究。

My job is to help you learn.（表语）大家的愿望是成功。

Our desire is to succeed.（同位语）我听他唱歌。

I heard him sing.（宾补）3. 不定式作形容词不定式作为形容词时，表示被修饰的名词或代词的特点。

不定式可以放在名词或代词之后，也可以放在句末，前者时态多为现在分词，后者时态多为过去分词。

例句：那是一张难画的画。

That is a difficult picture to paint.我买的是易燃的纸。

I bought the paper to burn easily.总之，掌握不定式的用法有助于提高语言表达的准确性和丰富性，也可以更好地理解和翻译英语句子。

不定式知识点归纳总结一、不定式的构成不定式是动词的一种形式，由“to + 动词原形”构成。

例如：to be, to do, to go等。

二、不定式的用法1. 作主语例句：To study hard is important for students.翻译：努力学习对学生来说是很重要的。

2. 作宾语例句：I want to learn English.翻译：我想学英语。

3. 作宾语补足语例句：She asked me to help her.翻译：她要求我帮助她。

4. 作表语例句：Her dream is to become a doctor.翻译：她的梦想是成为一名医生。

5. 作定语例句：There is a lot of work to do.翻译：有很多工作要做。

6. 作状语例句：He came here to see you.翻译：他来这里是为了见你。

7. 用在and, but, or连接两个不定式例句：I want to learn English and to improve my speaking skills.翻译：我想学英语，还想提高口语能力。

8. 与形容词和副词连用例句：I'm happy to meet you.翻译：见到你我很高兴。

9. 用在名词前表示目的，结果等例句：He gave us some advice to help us study better. 翻译：他给了我们一些建议，帮助我们更好地学习。

三、不定式的特殊用法1. with + 宾语 + 不定式例句：He left me with nothing to say.翻译：他让我无话可说。

2. for + 宾语 + to 不定式例句：We have a lot of work for you to do.翻译：我们有很多工作需要你做。

3. 不定式的被动形式例句：The book is difficult to finish.翻译：这本书难以完成。

初中英语知识点归纳不定式的用法不定式是英语中的一种动词形式，由"to"加上动词原形构成。

在句子中，不定式可以作为动词、名词或形容词的补语，具有多种用法。

本文将归纳初中英语中不定式的用法。

一、不定式作动词的宾语不定式可以作为动词的宾语，表示动作或状态的延续。

例如：1. I want to go shopping.（我想去购物。

）2. She likes to sing.（她喜欢唱歌。

）3. They plan to visit Beijing.（他们计划去北京旅游。

）二、不定式作主语不定式可以作为句子的主语，通常用于表示抽象概念或一般情况。

例如：1. To learn a foreign language is important.（学习一门外语很重要。

）2. To eat healthily is good for us.（健康饮食对我们有益。

）3. To be honest is necessary.（诚实是必要的。

）三、不定式作目的状语（表示目的或原因）不定式可以表示某种动作或状态的目标或目的。

例如：1. I bought a new dictionary to improve my English.（我买了一本新字典来提高我的英语水平。

）2. We need to work hard in order to achieve our goals.（我们需要努力工作以实现我们的目标。

）3. He goes to the gym every day to keep fit.（他每天去健身房保持健康。

）四、不定式作结果状语（表示结果）不定式可以表示某种动作或状态的结果。

例如：1. The weather was so bad as to cancel the flight.（天气太糟糕导致航班取消。

）2. He was too tired to continue working.（他太累了不能继续工作。

中考动词不定式用法在中考英语中，动词不定式是一个重要的语法点。

对于同学们来说，掌握好动词不定式的用法，不仅能够在语法题中拿到高分，还能在写作中准确表达自己的意思，让文章更加出彩。

动词不定式的构成非常简单，就是“to ＋动词原形”，比如“to do”“to play”“to study”等等。

但它的用法可不少，咱们一个一个来看。

首先，动词不定式可以作主语。

比如说“To learn English well is very important”（学好英语非常重要。

）这时候，为了避免句子头重脚轻，常用 it 作形式主语，真正的主语是动词不定式，就变成了“It is very important to learn English well” 这样的句子更符合英语的表达习惯，读起来也更顺畅。

动词不定式作宾语也是常见的用法。

有些动词后面只能跟动词不定式作宾语，比如“want”“decide”“hope”“expect”“plan”等等。

例如，“I want to go shopping”（我想去购物。

）“He decided to study harder”（他决定更努力学习。

）然后是作宾语补足语。

常见的动词有“ask”“tell”“want”“allow”“encourage”等。

比如“Our teacher asks us tofinish our homework on time”（我们老师要求我们按时完成作业。

）“My parents encourage me to learn a musical instrument”（我父母鼓励我学一门乐器。

）接着说作定语。

动词不定式作定语时，要放在被修饰词的后面。

例如，“I have a lot of homework to do”（我有很多作业要做。

）“There is nothing to worry about”（没什么可担心的。

）还有作状语。

它可以表示目的、结果、原因等。

初中英语知识点归纳动词的不定式动词的不定式是英语中的重要语法现象之一，学好不定式的用法可以帮助我们更好地理解和运用英语。

本文将对初中英语中动词的不定式进行归纳总结，以便同学们能够更加系统地掌握这一知识点。

一、动词的不定式形式英语中的动词不定式形式为“to + 动词原形”，其中“to”为不定式符号。

不定式的形式通常不受主语的人称和数的限制，一般用作动词、名词、形容词的宾语或补语。

二、不定式作动词的宾语动词不定式可以作为其他动词的宾语，常见的动词有：want, hope, plan, like, love, hate, enjoy等。

例如：1. I want to be a doctor when I grow up.（我长大后想当一名医生。

）2. They like to play basketball in their free time.（他们闲暇时喜欢打篮球。

）三、不定式作名词的补语不定式可以作为某些动词后的名词的补语，常见的动词有：be, become, seem, feel, appear等。

例如：1. Her dream is to become a famous singer.（她的梦想是成为一名著名的歌手。

）2. It seems to be a nice day for a picnic.（今天似乎是个适合野餐的好天气。

）四、不定式作形容词的补语不定式可以作为某些形容词后的补语，常见的形容词有：happy, sad, glad, ready, willing等。

例如：1. He is happy to help others.（他乐意帮助别人。

）2. I am ready to take on the challenge.（我准备好迎接挑战。

）五、不定式作目的状语不定式可以作为目的状语，表示动作的目的或者用途。

常见的动词有：go, come, try, learn, study等。

英语不定式知识点归纳一、不定式的构成。

不定式由“to + 动词原形”构成（to有时可以省略）。

例如：to go, to see, to eat等。

在某些情况下，如使役动词（let、make、have）和感官动词（see、hear、feel等）后作宾语补足语时，to要省略。

例如：I saw him go into the room.（这里go前面省略了to）二、不定式在句中的作用。

1. 作主语。

- 直接作主语：- To learn English well is not easy.（为了避免句子头重脚轻，往往用it作形式主语，而将真正的主语不定式后置，即It is not easy to learn English well.）- 用it作形式主语的常见句型：- It + be+形容词+(for/of sb.)+to do sth.- 如果形容词是描述事物特征的（如easy, difficult, important等），用for sb.。

例如：It is important for us to protect the environment.- 如果形容词是描述人的品质的（如kind, nice, stupid等），用of sb.。

例如：It is kind of you to help me.2. 作宾语。

- 有些及物动词后只能接不定式作宾语，如want, hope, decide, agree, expect等。

例如：I hope to see you soon.- 疑问词（what, how, where等）+不定式结构，可在句中作宾语。

例如：Idon't know what to do next.3. 作宾语补足语。

- 常跟不定式作宾补的动词有ask, tell, want, allow, encourage等。

例如：My mother told me to clean my room.- 在一些使役动词和感官动词后的宾补不带to，但变为被动语态时，要加上to。