高考英语-动词不定式-知识点考点全梳理
第十二章动词不定式(思维导图+知识梳理+好题精炼)2022-2023初中英语中考语法归纳
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.。
备战2021年高考英语考点一遍过考点16动词不定式（含解析）
考点16动词不定式高考频度：★★★★★动词不定式定义动词不定式是非谓语动词的一种，由不定式符号to+do构成。
没有人称和数的变化，在句子中不能作谓语，但可做主语、表语、宾语、状语和宾语补足语,具有名词、形容词和副词的特征。
动词不定式仍保留动词的一些特点。
形式时态主动被动一般式to do to be done 完成式to have done to have been done 进行式to be doing ----完成进行式to have been doing ---- 否定式否定词（not/never）+动词不定式考向一不定式的作用1. 作主语：不定式作主语时，谓语用单数。
往往用it 作形式主语，把不定式放在谓语后面。
It took us two hours to finish the job.（1）其他系动词如look，appear等也可用于此句型。
（2）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...句型。
试比较：It is to negate my own idea to believe him.（错）To believe him is to negate my own idea .（对）（3）It is+ adj. of / for sb to do sth结构中，当不定式的逻辑主语和前面的形容词可以构成系表结构时，用of，否则用 for。
2. 作宾语（1）动词+不定式。
☞He managed to escape from the fire.☞I find it hard to get along with him.（it 作形式宾语）（2）动词+疑问词+to，＂特殊疑问句+不定式＂相当于名词，作宾语。
☞I don’t know what to do next/ how to do it next.不定式短语作宾语时，若是还带有宾语补足语，往往把不定式短语放在宾语补足语以后，用it 作形式宾语。
专题12.非谓语动词考点梳理(复习讲义)
专题12.非谓语动词考点梳理（复习讲义）考点清单范围知识条目非谓语动词熟练运用动词不定式作宾语、宾语补足语和目的状语理解动词不定式作主语和定语的用法考点一动词不定式的用法一、动词不定式的构成不定式的基本形式为:to+动词原形,有时可以不用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在其前面加not。
二、动词不定式的句法功能功能例句说明主语To speak English is not easy for us.=It is not easy forus to speak English.讲英语对我们来说不容易。
不定式作主语时,常常可用it作形式主语,而把不定式放在后面表语My work is to clean the room every day.我的工作就是每天打扫这间屋子。
多数情况下,不定式作表语表示主语的“职业、职责”等宾语I wish to speak to the manager.我想跟经理说话。
只能作某些动词的宾语,一般不作介词的宾语宾补She asked me not to speak Chinese in class.她让我在课上不要讲汉语。
在make,let,see,hear,watch等使役、感官动词后,不定式省略to定语Have you got anything to say?你有要说的吗?不定式作定语,要放在所修饰词的后面状语I’m sorry to trouble you.(表原因)很抱歉,给你添麻烦了。
I went to the library to study English.(表目的)我去图书馆学英语了。
不定式作状语,其逻辑主语要和句子的主语一致1.不定式作主语动词不定式作主语时,常用it作形式主语,而将真正的主语放在句末,常用结构为:It+be+adj.(+for/of sb.)+动词不定式。
如:To learn English well is useful.→It is useful to learn English well.It’s important for us to protect the environment.注意:在kind,good,nice,clever等表示人的品质的形容词后,不用for而用of。
语法知识点梳理动词不定式的用法
语法知识点梳理动词不定式的用法动词不定式是英语语法中的一项重要知识点。
它是由动词原形加上"to"构成，常用作名词、形容词或副词的补充。
本文将对动词不定式的用法进行梳理，帮助读者更好地理解和运用。
一、动词不定式作主语动词不定式可以作为句子的主语。
例如：1. To learn a foreign language is beneficial to one's personal development.学习一门外语对个人发展有益。
2. To exercise regularly is important for maintaining good health.定期锻炼对保持健康很重要。
二、动词不定式作宾语1. 表示建议或命令动词不定式常用于表示建议、命令或请求的动词后。
例如：1. He advised me to take a vacation.他建议我去度假。
2. The teacher told the students to be quiet.老师告诉学生们安静。
2. 表示喜好或感知某些动词后面跟动词不定式，用来表示喜好、感知、感觉等。
例如：1. I enjoy playing the piano in my free time.我喜欢在闲暇时弹钢琴。
2. She saw him enter the room quietly.她看到他悄悄地进了房间。
三、动词不定式作宾语补足语某些动词需要与动词不定式连用，形成宾语补足语，用来补充说明或补充宾语的意义。
例如：1. I found it difficult to solve the math problem.我发现解决这个数学问题很困难。
2. He considers her to be the best candidate for the job.他认为她是这份工作的最佳候选人。
四、动词不定式作定语动词不定式可以用作名词的前置定语，用来修饰名词。
高考英语非谓语动词不定式语法知识点
高考英语语法非谓语动词不定式用法精讲不定式1．作主语不定式作主语常见的是it 作形式主语，放在句首，将真正的主语动词不定式（短语）放在句子后面。
It’s easy to be wise afterthe event.Itis right to give up smoking.2．作宾语I find it interesting to study history.1.直接作宾语句型：动词（vt）+ to do解读：直接跟在一个及物动词后面作宾语。
这时句子有以下两个特点：第一：句子的主语和不定式的逻辑主语是一致的，不定式的语态需看与句子主语的关系。
第二：这时句子的谓语动词多是描写态度；不定式动作则说明行为。
经典例句：1)Nobodywants to be laughed at.2)Thiscompany refused to cooperate with us.经典例题：1.I don't want ____like I' m speaking iii of anybody, but the manager' s plan isunfair. (2005天津卷)A. to soundB. to be soundedC. soundingD. to have sounded2.I can’t stand ______ with Jane in the same office. She just refuses _______talking while she works. (2006北京卷)A.working ; stoppingB. to work ; stoppingC.working ; to stopD. towork ; to stop3.As a young man , I hate______________ in public.ughed atB. to be laughed atC. to laugh atughing at2.句型：某些及物动词+连词+to do解读：在一些动词之后，可以在连接代词（what, who , which）或连接副词（how, when, where）及连词whether 后面接一个带to 的动词不定式作宾语。
高考英语：非谓语动词考点
外教一对一高考英语：非谓语动词考点一、分类：动词不定式、动词-ing形式、动词的过去分词总的特点：1.非谓语动词作状语时，其逻辑主语与主句主语保持一致。
2.Doing/To do (sth.)+单数V : 非谓语动词作主语，谓语用单数。
二、动词不定式1、特点：表将来2、形式：①基本型：to+动词原形(do)。
②被动式：to be done ③完成时:to have done ④进行时：to be doing3、句子功能：主语、宾语、表语、定语、状语、补语(宾补)Eg: ①To catch the early train, you`ll have to get up early.(目的状语)②I rushed there in a taxi only to find the library closed.(结果状语：意外结果)。
③This i s very good music to dance to.(定语)④It is necessary to learn English well.(主语，it 为形式主语)4、不定式的省略1)(为了避免重复)并列结构中第二个to：I want to get up early and read English.例外：前后表对比时，to不可省去:To be or not to be ,that is the question.It is better to lose one’s life than to lose one’s spirit.2) (为了避免重复)省去to后的不定式结构：—Would you like to go shopping?—Yes,I`d like to.例外：to后有have/be时，保留be或have—Did you go shopping yesterday? —No, but I ought to have.5、不定式主动形式表被动意义外教一对一1)主(sth)+ be + 主补/表语(表性质的adj. + to do)2) 主+Vt + 宾语 + 宾补(adj.+ to do)3) 主 + Vt+ 宾语+定语(to do): 不定式作定语与所修饰的名词(代词)构成逻辑动宾关系，又和该句主语构成逻辑上的主谓关系。
语法知识点梳理动词不定式的应用
语法知识点梳理动词不定式的应用语法知识点梳理：动词不定式的应用动词不定式（infinitive）是英语中的一种非谓语动词形式，它是一个带有to的动词原形，如to go、to eat等。
动词不定式在英语中具有广泛的应用，本文将就动词不定式的使用场景进行梳理和总结。
一、作主语动词不定式可以作为句子的主语，用来代表一个动作或行为。
例如：- To study English every day is important for improving language skills.（每天学习英语对于提高语言能力很重要。
）- To help others is a virtue.（帮助他人是一种美德。
）二、作宾语1. 不定式作及物动词的宾语动词不定式可以作为及物动词的宾语，表示一个动作或行为。
常见的及物动词包括want、hope、need、expect等。
例如：- I want to visit my grandparents this summer.（我想今年夏天去看望我的祖父母。
）- She hopes to find a good job after graduation.（她希望毕业后能找到一份好工作。
）2. 不定式作及物动词的宾语补足语有些及物动词需要一个补足语来补充说明宾语的情况，这时可以使用动词不定式作为宾语补足语。
例如：- She considers him to be a reliable friend.（她认为他是一个可靠的朋友。
）- The teacher wants the students to complete the assignment by tomorrow.（老师希望学生们明天前完成作业。
）3. 不定式作介词的宾语有些介词后接动词不定式作为宾语，表示一个目的或目标。
常见的介词有for、to、with等。
例如：- He went to the store to buy some groceries.（他去商店买些日常用品。
动词不定式的相关考点梳理
英语篇语法直播动词不定式，即“to+动词原形”，其否定形式为“not to+动词原形”，是初中英语中的一大重难点，深受各地中考英语命题者的青睐。
对此，笔者归纳了动词不定式的几个考查热点，以期对同学们有所帮助。
一、考查动词不定式作逻辑主语动词不定式用作逻辑主语时，常用“It ”作形式主语，基本结构为“It is +形容词+for/of sb.to do sth.”。
同学们在做题时要注意仔细剖析句子结构，弄清真正的逻辑主语，从而选出正确答案。
【例1】（2022年贵州毕节中考卷）Many people have lost their homes because of wars.It ’s important for people a peaceful world.A.haveB.hadC.havingD.to have 解析：本题主要考查动词不定式用作逻辑主语。
句意是：“许多人因为战争失去了家园。
对人们来说，拥有一个和平的世界很重要。
”此句结构为“It is adj.for sb.to do sth.”,It 为形式主语，真正的逻辑主语为动词不定式，所以本题正确答案为D 项。
二、考查动词不定式作宾语在英语中，decide,want,choose,hope,wish,plan,need,agree,offer,refuse,prepare 等动词，后可以直接跟不定式作宾语。
【例2】（2022年湖南益阳中考卷）—Tom,do you think reading is important?—Yes,I do.So I decide more time on reading from now on.A.spendB.spendingC.to spendD.to spending解析：本题考查动词不定式作宾语。
句意是：“汤姆，你觉得阅读重要吗？”“是的，所以我决定从现在开始花更多时间来阅读。
”decide to do sth.表示“决定做某事”，所以空格处应填动词不定式，在句中用作宾语，故正确答案为C 项。
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高考英语-动词不定式-知识点考点全梳理
动词不定式在句中的成分
1，作主语：
To read English aloud is very important 大声朗读英语是很重要的
It's very important to read English aloud 大声朗读英语是很重要的。
2，作宾语：
I want to play football 我想要踢足球。
I find it easy to study English 我发现学习英语是很容易的。
3，作表语：
My plan is to study English well 我的计划就是把英语学好。
4，作定语：
I must find a man to talk 我必须找到一个人去聊天
I have nothing to do 我没有可以做的事情。
5，作状语；
We did a lot of work just to improve our abilities
我们做这么多的工作就是为了提高我们的能力。
He got up early that day ，only to be told that it's Saturday
5，作补语：
He asked me to do homework 他叫我去写作业
He was asked to finish the work 他被叫去完成这个工作。
二，疑问词+不定式的句子成分
1，做主语：How to study English well is so important 如何把英语学好是很重要的。
2，做表语：My question is how to find it 我的问题就是如何找到它。
3，做宾语：If you want to know what to eat，you must have a menu 如果你想要知道吃什么？你必须有一个菜单。
He is worrying about where to go 他正在担心去哪里
不定式的几种时态形式
You seems to play football well
你好像踢足球还不错（状态）
You seems to be playing football very happily on the playground
你好像正在操场上打球很开心哦（动作）
You seems to have played football for two hours
你好像已经踢足球已经两个小时了。
（影响）
不定式的语态：
主动：It is great for me to play football every day 每天踢足球对我来说是很好的
被动：It's great for me to be invited at your party 对我来说是很好的在你的聚会上被邀请。