不定式练习题
动词不定式专项练习
1. It’s wrong ________ not ________ her a letter.
A. of you; to write
B. for you; writing
C. of you; writing
D. for you; write
2. —I’m sorry, I _____ my exercise book at home.
—Don’t forget _____ it to school tomorrow, please.
A. forget; to take
B. left; to bring
C. forget; to bring
D. left; to take
3. Before you go abroad, you need ________ about table manners in that country.
A. knew
B. known
C. to know
D. knowing
4. I need some paper ________.
A. to write
B. to write on
C. to write in
D. writing
5. —I have no pens ________. Could you please lend me one?—Sure. Here you are.
A. to write
B. to write down
C. to write with
D. to write in
6. Do you think our football team will win the match?
Yes, we have better players. So I __ them to win.
A. hope
B. ask
C. help
D. expect
7. I am allowed ______ until 12:00 on the evening of the Spring Festival.
A. stay up
B. to stay up
C. staying up
D. to staying up
8. Cars cause most of Beijing’s air pollution. So the “No Car Day”campaign（活动）asks Beijing drivers ________ their cars at home one day each month.
A. leave
B. leaving
C. to leave
D. to be left
9. —Do you like sports?
—Sure. I’m looking forward to _________ the 29th Olympic Games _____ in Beijing on TV.
A. watch; to hold
B. watching; being held
C. watch; held
D. watching; to be held
10. Good manners usually help people to ________ each other.
A. get on well with
B. get started
C. be friendly
D. get together
11. When people want to relax themselves, they prefer ____ TV or listen to music rather than ________ newspapers.
A. watching; read
B. watching; to read
C. to watch; read
D. to watch; reading
12. —Oh, terrible! I forgot ________ the window. It’s windy.—Really? Let’s go back home quickly.
A. closing
B. to close
C. closed
D. close
13. —Shopping with me?—Sorry, I have a lot of clothes ________.
A. to wash
B. washed
C. wash
D. to be washed
14. On her way home Lucy saw a thief _________ in a shop. She stopped ________ 110 at once.
A. steal; call
B. to steal; call
C. stealing; to call
D. stealing; calling
15. There are some dangerous fishes in this river, and I’ve warned Jack ________ here.
A. not to swim
B. to not swim
C. swim not to
D. to swim not
16. Martin Murray is a fifteen-year-old boy. He used ______ a “problem child”, but luckily, his mother was very patient, and didn’t give up ________ him.
A. to be; try to help
B. being; trying helping
C. to be; trying to help
D. being; try helping
1. ______ the seeds and they will grow.
A. Water
B. To water
C. Watering
D. Watered
2. The purpose of the scheme is not to help the employers but ______ work for young people.
A. provide
B. to provide
C. providing
D. provided
3. He arrived at the office early, ______ a good example to the others.
A. set
B. to set
C. to be set
D. having set
4. Please make my excuse at tomorrow’s meeting —I’ve got too much work ______.
A. to do to come
B. doing coming
C. to do coming
D. to do coming
5. We looked everywhere for the keys, but they are nowhere _____
A. to find
B. to have found
C. to be found
D. being found
6. After describing the planned improvements, she went on ______ how much they would cost.
A.to explain
B. explaining
C. to be explaining
D. having explained
7. To test eggs, ______ them in a bowl of water: if they float they’re bad, if they sink they’re good.
A. put
B. putting
C. to put
D. to be putting
8. Please remember ______ the plants while I’m away.
A. watering
B. to be watering
C. to water
D. being watering
9. ______ wine, first you must press the grapes.
A. Making
B. To make
C. To be making
D. Make
10. I’ve never been so poor ______ able to afford a meal.
A.as to be not
B. not as to be
C. as not to be
D.as to not be
11. I don’t know whether to stay in teaching or ____another job.
A. trying getting
B. to try to get
C. trying to get
D. try get
12. I’ll have to change my clothes before I go out —I don’t want ______ like this.
A. to see
B. to be seeing
C. to be seen
D. being seen
13. In fact, she was the first woman ______to such a post.
A. to elect
B. to be electing
C. to have elected
D. to have been elected
14. I’d like ___over the Alps and looking down at the moun tains.
A. flying
B. being flying
C. to be flying
D. be flying
15. I’m learning ______ a cake. Can you explain ______ one?
A. to make, to make
B. how to make, to make
C. to learn, how to make
D. making, making
（Keys: 1. A 2. B 3. C 4. B 5. C 6. D 7. B 8. C 9. D 10. A 11. C 12. B 13. A 14.
C 15. A 16. C 17. B）
1—5 ABBAC 6—10 AACBC 11—15 BCDCC
初二动词不定式练习题
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 (1)中常用nice，kind，clever，good，right，wrong，foolish，careless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；句式(4)中常用hard，difficult，easy，important等形容词，与介词for搭配，表示不定式表示的动作、行为的性质。 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. 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。 for 与of 的辨别方法：用介词后面的代词作主语，用介词前边的形容词作表语，造个句子。如果道理上通顺用of，不通则用for。如：You are nice.(通顺，所以应用of)。He is hard. (人是困难的，不通，因此应用for。) A.It is right to stop killing wild animals. B.It is the best time to visit USA in summer. C.It is helpful for us to learn English well. 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) Keys：1. C 2. A 3. D
(完整版)非谓语动词练习题(含答案解析)
高考英语非谓语动词练习题 1．The headmaster wanted the new classroom building___as soon as possible．A．to put up B．to be put up C．to have been put up D．being put up 2．At the shopping－centre，he didn’t know what____and____with an empty bag．A．to buy；leave B．to be bought C．to buy；left D．was so buy；leave 3．The policeman put down the phone，____with a smile on his face． A．satisfied B．satisfying C．to be satisfied D．having satisfied 4．____，your composition is full of mistakes． A．Writing carelessly B．Written carelessly C．Having written carelessly D．Being written carelessly 5．She made a candle_____us light． A．give B．gave C．to give D．given 6．The stranger you saw_____with a big travelling－bag stayed in Room 104 yesterday． A．to come in B．come in C．has come in D．who came in 7．——What do you suppose made her worried? ——_____a gold ring． A．Lose B．Lost C．Losing D．Because of losing 8．He feft a stone____his back． A．hitting B．hit C．hitted D．to hit 9．I know it’s not important，but I can’t help_____about it． A．to think B．and think C．thinking D．being thought 10．_____several times the young scientist still kept on making his experi －ments． A．Having been failed B．Having failed C．Though failed D．Because of failure 11．In Australia，he made a lot of friends____a very practical knowledge of the English language． A．get B．go get C．getting D．got 12．——What did you mean by saying that? ——I mean no harm．I only____． A．meant heping B．want to help C．meant of help D．want helping 13．I never expected the shoes_____． A．wearing out B．to be worn out C．to have worn out D．being worn out 14．You must learn_____． A．that your time needs a wise use B．how to make lest of your time C．to make wise use of your time D．wise ways to use your time 15．_____is better_____one’s life than_____one’s spirit． A． That； lost； you lose B． It； to lose； lose C．This ； losing ； losing D． It； to lose ； to lose
不定式用法详解
不定式用法详解 定义：在句子中充当除了谓语以外的各种句子成分的动词形式叫做非谓语动词。 非谓语动词有三种：不定式，动名词，分词。 注：非谓语动词具有时态和语态的变化，可以同否定词not连用，构成否定形式，可以带宾语，状语，补语。非谓语动词的名词，形容词，副词的特征；可用在句中做主语，宾语，补语，状语，和定语等。 —不定式（原形动词前加to, 构成动词不定式。不定式不做谓语，属于非谓语动词） 不定式的时态，语态 一般式：不定式所表示的动作和谓语动词所表示的动作或状态同时发生或几乎同时发生或存在。但多数情况下是在谓语动词所表示的动作之后发生。 e.g :They often watch us play football. (同时) She hopes to go there again. (之后发生) 完成式：不定式所表示的动作或状态发生在谓语动词所表示动作或状态之前。 e.g : I’m glad to have seen your mother yesterday 注：1）用在intended, expected, meant, hoped. promised, wanted, planned. wished. thought, desired, was, were等后，表示过去没有实现的愿望，期待或计划的等，也用来表示先于谓语动词发生的动作或状态。 e.g: He wanted to have met (=had wanted to meet) you at the airport,but he didn’t get there in time. 他原想去机场接你（事情已经发生），但他没及时赶到那儿。（没接成） e.g: We planned to have done (had planned to do) good deeds for the poor people last month. 我们原计划上个月为贫困的人们作些好事。（没作成）。
英语常见动词不定式词组
常见动词不定式词组、句型用法总结 ★希望做某事hoｐe to do stｈ. ★决定做某事deｃidｅto do sｔｈ. ★同意做某事aｇree tｏｄo sth、 ★需要某人做某事neeｄto ｄo ｓth。 ★使用某物做某事ｕse sth to dｏｓtｈ ★迫不及待做某事ｃan’t wａiｔｔo ｄｏ ★准备做某事ｇet／bｅｒeady ｔｏ do ★尽力/努力做某事ｔｒｙtｏdo sth ★计划做某事ｐｌan ｔo do ｓth。 ★不得不hａve to dｏ ★轮流做某事ｔaｋe oｎｅ’ｓturｎs ｔo do st ｈ。 ★拒绝做某事ｒefｕse to dｏsｔh。 ★告诉某人做某事tell ｓｂ. to do sｔh、
★请某人做某事ask sb、tｏdｏstｈ。 ★期待某人做某事eｘpecｔsb、to dｏｓt ｈ. ★教某人做某事tｅach sb。tｏdo sth ★想要某人做某事want /would lｉke sb、to do stｈ、 ★同意某人做某事agrｅe ｓb. ｔo do ｓｔh。. ★喜欢/想要某人做某事lｉke sb、to do st ｈ。 ★帮助某人做某事helｐsb。tｏdo sth／help sb.do ★It’ｓｏne's ｔurｎto do sｔh、轮到某人做某事 ★It’s ｔime(ｆｏr sb。) to dｏsth。就是某人做某事时候了
★It's +aｄｊ. fｏr/oｆsb. ｔｏdｏsｔh。对于某人来说做某事就是…… ★Iｔtakes sｂ。tiｍｅto ｄo ｓtｈ。某人做某事花了某时间 以下就是不带to得动词不定式(即动词原形)得常见用法 ★leｔsb、ｄo ｓth让某人做某事★maｋe ｄo sth使得某人做某事 ★hｅar do sth do sth听见某人做某 事★sｅｅdo sｔh do ｓｔh瞧见某人做某事 ★why nｏt 或why ｄon’t ｙｏu +动词原形?为什么不…。？(表示建议) ★某人+ｈaｄbeｔter( ｎot)do 某人最好(不)做某事
(完整版)初中英语动词不定式练习题
一. 根据上句意思完成下句，使两句意思相近或相同，每空一词。 1. He was so angry that he couldn’t say anything. He was too angry _______ ______ anything. 2. I don’t know when we will have the meeting. I don’t know when _______ _______ the meeting. 3. He said he would write a letter. He said he would have a letter ______ _______. 4. That you read English in the morning is very important. It is very important _____ you _____ _______ English in the morning. 5. He was so strong that he could lift the stone. （石头） He was strong _____ _____ ______ the stone. 6. His father went to Beijing for his holiday. His father went to Beijing ________ ______ his holiday. 7. They got up early so that they could get there in time. They got up early _____ ______ _______ ______ there in time. 8. His brother decided that he would buy the book. His brother decided _____ _______ the book. 9. He hopes that he can visit the Great Wall. He hopes _____ _______ the Great Wall. 10.I saw him go into the room. He was seen _____ ______ into the room. 11.We made him work five hours a day. He was made _____ ______ five hours a day. 12.Do you want to say anything for yourself? Do you have anything _____ _____ for yourself? 13.We don’t know what we shall do next. We don’t know what ____ _______ next. 14.I’m very sorry on hearing the bad news. I’m very sorry _____ _______ the bad news. 15.He stopped and had a look at me. He stopped _____ ______ a look at me. 16.I helped him with his English. I helped him _____ ______ English. 17.My father promised （许诺）that he would buy me a bike. My father promised ____ ______ me a bike. 18.The box is so heavy that I can’t carry it. The box is too heavy ______ me _______ _______. 19.“Lie down! ”the boy said to his dog. The boy ordered his dog ______ ______ down. 20.“Don’t make any noise ”s he said to me. She told me ______ _______ ________ any noise. 二. 单选： 1. This company was the first ____ portable radios as well as cassette tape recorders in the world. A. producing B. to produce C. having produced D. produced 2. The purpose of new technology is to make life easier ____it more difficult. A .not making B. not make C .not to make D. nor to make 3. Helen had to shout ______above the sound of the music .
动词不定式练习题及讲解说课讲解
动词不定式练习题及 讲解
动词不定式用法要点讲解 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 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 It is difficult for us to finish writing the composition 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. ⑤It seems(appears)＋形容词＋to do It seemed impossible to save money. 二、作宾语 ⒈不定式作宾语 ①以下动词后，只能跟不定式作宾语。如： agree,ask,aim,arrange,choose,decide,demand,expect,fail ,help,hope,lean,long manage,offer,plan,prepare,pretend,promise,refuse,wish等，这些词大部分可接 th at引导的从句。如： When our visit to the farm was over, we expected to start back on foot. When our visit to the farm was over, we expected that we would start back on foot. ②当复合宾语中的宾语是不定式时，先用形式宾语it代替不定式，把不定式置于补语之后，即：主语＋动词＋it＋补语＋to do句式。 He feels it his duty to help the poor. ③介词but,except,besides+to do(do) 在这种句型中，如介词前有动词do，后面应接不带to的不定式；如无do，则接to 不定式，即带do不带to，带to不带do。如： The enemy soldiers had no choice but to give in. ⒉部分动词后面，既可接动词不定式，也可接动名词作宾语，意义不变。如：begin,continue,start,hate,like,love,need,require,want等。 在need,require,want后接-ing形式，表示被动意义，也可接不定式，但要用被动形式，如：Your handwriting needs improving(tobe improved). hate,love,like接不定式表示特定的未来事件，接动名词表示目前正在进行的活动或一般的行为。 在下列情况下，一般要用不定式： ①hate,like,love前有would(should)时，如：I'd like to have a cup of coffee. ②当谓语动词begin,continue,start等是进行式时，如：Thestudents are starting to work on the difficult maths problem. ③begin,continue,start与know,understand等状态动词连用时，如：I soon began to understand what was happening. 3．advise,allow,encourage,forbid,permit等动词后接动名词作宾语，或带不定式作宾语补足语。如： Our teachers don't permit our/us swimming in the lake. Our teachers don't permit us to swim in the lake. 4．部分动词后接不定式或动名词时，意义差别较大，应根据句子语境选择使用。 ①forget,remember,regret后接不定式，表示现在或未来的动作，接动名词表示动作已经发生。如： We regret to tell you that all of you are not invited to attend the meeting. They regretted ordering these books from abroad. ②mean to do 打算做某事 ;mean doing 意味着…… ③try to do 设法尽力做某事; try doing 试着做某事 ④stop to do 停下一件事去做另一件事（不定式作目的状语）; stop doing 停止做某事 ⑤can't help doing 禁不住…; can’t to do不能帮助干…… ⑥go on to do 做不同的事或不同内容的事; doing 继续不停地做某事，指同一动作的继续 ⑦leave off to do 离开某地去干什么（目的状语）; leave doing停下某事 三、做表语 To be kind to the enemy is to be cruel to the people. 四、作定语 不定式在句中作定语，置于被修饰的名词或代词之后。如： Have you anything to be taken to your sister? 收集于网络，如有侵权请联系管理员删除
动词不定式用法讲解·优选.
动词不定式的用法讲解 一、动词不定式： 构成：to + 动词原形（to只是不定式符号，没有意义） 动词不定式作主语较长时，常用it作形式主语，而将真正的主语放在句末。 1.It + is/was+形容词+(for sb.) +动词不定式 To learn English well is useful. = It’s useful to learn English well.学好英语是有用的。 To protect environment is important for us. = It’s impor tant for us to protect environment.对于我们来说保护环境是很重要的。 2. It is / was + kind / good/ nice/ clever + of sb. + 动词不定式 It’s very kind of you to help me. 你帮助我真是太好啦。 It’s very clever of you to do like that. 你那样做真的太聪明啦。 3. It takes ( took , will take ) sb. some time to do something. (做某事花费某人…时间) 4.It is a good idea to do sth. 作宾语 1.常见的跟不定式作宾语的动词有： want to do sth. decide to do sth. hope to do sth. plan to do sth. offer to do sth. agree to do sth. learn to do sth try to do sth prefer to do sth promise to do sth. need to do sth. expect to do sth. 2. 主语+ find / think + it +形容词+ (for sb.) + to do I find it easy to read English every day. 我发现每天读英语和容易的。 He felt it hard to sleep.他觉得很难入睡。 I think it very interesting to learn English. 我认为学英语很有趣。 We found it impossible to cross the river. 我们发现过河是不可能的。 3.特殊疑问词+动词不定式作宾语 Can you tell me how to get to the post office? I didn’t know what to do next.
(完整)动词不定式所有短语
(完整)动词不定式所有短语 编辑整理： 尊敬的读者朋友们： 这里是精品文档编辑中心，本文档内容是由我和我的同事精心编辑整理后发布的，发布之前我们对文中内容进行仔细校对，但是难免会有疏漏的地方，但是任然希望（(完整)动词不定式所有短语）的内容能够给您的工作和学习带来便利。同时也真诚的希望收到您的建议和反馈，这将是我们进步的源泉，前进的动力。 本文可编辑可修改，如果觉得对您有帮助请收藏以便随时查阅，最后祝您生活愉快业绩进步，以下为(完整)动词不定式所有短语的全部内容。
动词不定式所有短语 常见动词不定式词组、句型用法总结 .固定用法(非谓语动词）：以下是带to的动词不定式常见搭配 ★希望做某事hope to do sth. ★决定做某事decide to do sth。 ★同意做某事agree to do sth. ★需要某人做某事need to do sth。 ★使用某物做某事use sth to do sth ★迫不及待做某事can’t wait to do ★准备做某事get/be ready to do ★尽力/努力做某事try to do sth ★计划做某事plan to do sth. ★不得不have to do ★轮流做某事take one’s turns to do sth. ★拒绝做某事refuse to do sth。 ★告诉某人做某事tell sb. to do sth。 ★请某人做某事ask sb. to do sth. ★希望某人做某事wish sb。 to do sth. ★教某人做某事teach sb。 to do sth ★想要某人做某事want /would like sb.to do sth。 ★同意某人做某事agree sb。 to do sth. . ★喜欢/想要某人做某事 like sb。 to do sth。 ★帮助某人做某事help sb。 to do sth/help sb.do ★encourage sb to do 鼓励某人做 ★It’s one’s turn to do sth。轮到某人做某事 例句:It your turn to clean the blackboard。 ★It's time(for sb.） to do sth。是某人做某事时候了 例句:It’s time for me to go home。 ★It’s +adj。 for/of sb. to do sth. 对于某人来说做某事是……（当adj。是表示性格、品德的形容词时用of) 例句： It is easy for me to learn it well。 It is very kind/foolish/nice of you to do so. ★ It takes sb。 sometime to do sth。某人做某事花了某时间 例句： 1.It takes me an hour to get to school by bike。 2。It took me an hour to watch TV last night。 3.It will take her two weeks to finish the work. ★too+adj。/adv。 to do sth. 太….。而不能 例: He was to angry to say a word。 ★find/think/feel it +adj。 to do sth.发现/认为/感到做某事是… 例: I find/think/feel it hard to learn English well.
非谓语动词不定式动名词练习题
1. —What did you see just now? —I saw two _____ doctors _____ out of the house. A. women,come B. woman, came C. woman,coming D. women, to come 2. —_____ good news it is! The pandas are alive after the earthquake. —It’s so _____. A. What a, excited B. what, exciting C. How a, excited D. How, exciting 3. — Would you like to play table tennis with me? —I don’t feel like it. I would rather_____at home and watch TV. A stay B to stay C staying D stayed 4. She was surprised _____ me last night. A. to see B. see C. saw 5. —What's the matter? —I am having the trouble _____ who has taken my book. A. finding B. looking for C. finding out D. looking up 6. — What ______ news it was! — Yes, all of the children were _____. A. excited, exciting B. exciting, excited C. exciting, exciting D. excited, excited 7. — Why are you late? — My bike broke down. I had it _____. A. repaired B. repaires C. repair D. repairing 8. Colors can change our moods心情and make us _____ happy or sad, energetic or sleepy. A. to feel B. feeling C. felt D. feel 9. Would you mind _____ more slowly? I can’t follow you. A. speak B. spoke C. spoken D. speaking 10.It’s good habit _____ breakfast every day. A. had B. have C. has D. to have 11.Maria_____shy, but now she is quite outgoing. She has made lots of friends. A. was used to be B. is used to be C. was used to being D. used to be
不定式专题练习及答案
不定式专题练习 1. The teacher told them ________ make so much noise. A. don’t B. not C. will not D. not to tell sb. not to do sth. 告诉某人不做某事 2. Our master often told us _______ things for granted. A. not to have B. not to take C. didn’t take D. not to make take sth. for granted “把某事想当然”，是一个固定词组。Eg. You shouldn’t take it for granted that everyone should help you.你不要认为每个人都理应帮助你。 3. Tell him _______ the window. A. to shut not B. not to shut C. to not shut D. not shut 4. The boy wanted to ride his bicycle in the street, but his mother told him ______. A. not to B. not to do C. not do it D. do not to 不定式的省略要保留到to,否则就完整地表达，如:…but his mother told him not to do so. 5. Mrs. Smith warned her daughter ________ after drinking. A. never to drive B. to never drive C. never driving D. never drive warn sb not to do sth. 此处用never替代not. 6. The patient was warned _______ oily food after the operation. A. to eat not B. eating not C. not to eat D. not eating 7. The workers want us ________ together with them. A. work B. working C. to work D. worked 8. They would not allow him ________ across the enemy line. A. to risk going B. risking to go C. for risk to go D. risk going allow sb. to do sth. 允许某人做某事；risk doing sth冒险做某事 9. I saw him _______ out of the room. A. go B. had gone C. has gone D. goes see sth看见某人做某事 10. They knew her very well. They had seen her _______ up from childhood. A. grow B. grew C. was growing D. to grow 11. I’ve heard him _______ about you often. A. spoke B. speaks C. speak 12. Though he had often made his little sister _______, today he was made ______by his little sister. A. cry; to cry B. crying; crying C. cry; cry D. to cry; cry
不定式用法讲解
高中英语语法讲解不定式 （The Infinitive） 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。 E.g. He want his students to read the book aloud. A． 1 2 不定式的意义 不定式的一般式(to do ) 一般式表示的动作或状态，发生在谓语动词表示的动作或状态的同时或之后My wish is to become a doctor He seemed to be tired. She stopped to have a rest. 不定式的被动式 (to be done) 当不定式的逻辑主语是这个不定式所表示的动作的承受者时,不定式一般要用被动式. The building to be finished next month is for our teachers. I am going to Beijing, I have something to take to my parents, do you have something to be taken to your parents? 如果谓语表示的动作(情况)发生时, 不定式表示动作正在进行,这时候不定式就要用进行式.（to be doing） They are said to be building another bridge across the street. They seemed to be talking about something important. When I went to his home, he happened to be traveling around the world. I’m glad to be working with you. 如果不定式所表示的动作或状态发生在谓语动词所表示动作或状态之前，就用完成式 (to have done) ；若是在此基础上的被动含义，就用完成被动式( to have been done). He is said to have written a novel about the Long March. He thought it a pity not to have invited us. The assistant seemed to have been fired. He is said to have been taught French when he was a child. Einstein is said to have built up his theory when he was in his twenties. 如果不定式的动作是在谓语所表示的时间之前一直在进行的动作，就要用完成进行式. They are said to have been collecting folk song in Xinjiang. We’re happy to have been working with the experts all the month.
动词不定式作主语的三种方式
动词不定式作主语的三种方式 I 不定式作主语通常位于句首。如： ①To see is to believe．百闻不如一见。 ②To get up early is necessary．早起是必要的。 II 把引导词it放在句首作形式主语，而把真正的主语———动词不定式（短语）放在后面。如： ①It's not easy to work out the problem．计算出这道题不容易。 ②It is interesting to play with snow in winter．冬季里玩雪是很有趣的。 it作形式主语时，有三种情况： 1）常用形容词作它的表语。真正主语不定式通常有逻辑主语，一般用for短语来表示，即for sb．to do sth．（其中sb．就是to do的逻辑主语）。如： It's important for us to keep the water clean．保持水质清洁对我们来说是很重要的。 ［注意］for不能用of来代替，因为不能说：Y ou are important． 当表语形容词表示不定式的逻辑主语的性质或特征时，则不用for，而用of（sb．to do sth．）。如： It's very kind of you to say so．你这样说真是太好了。 （可以说：Y ou are very kind．） 2）有时也接名词作表语。如： It must be great fun to fly to the moon in a spaceship．乘宇宙飞船飞往月球一定很有趣。 3）it作形式主语时，还常用于“It takes（took ／will take）sb．some time（money）to do sth．”句型中。如： ①It took me more than an hour to do my homework yesterday evening．昨天晚上我做作业用了一个多小时。 ②It will take us a long time to walk there．步行去那儿要花费我们很长时间。 III．动词不定式与疑问词how，what，when，where，which等连用构成不定式短语，也可作主语。如： ①How to use the computer is the question．如何使用计算机是个问题。 ②Where to go has not been decided．去哪儿还没有定下来。 【巩固练习】选择正确答案填空。 1．It's important you walk after supper． A．of；to B．for；of C．to；to D．for；to 2．It's very kind you help me． A．to；of B．of；to C．for；to D．to；to 3．To make friends with them nice． A．is B．are C．be D．does 4． the meeting has not been discussed yet． A．Why to hold B．Where to C．When to hold D．Which to （Keys：1—4 DBAC）