动词不定式的用1
动词不定式的用法
动词不定式的特点及形式.
To do that sort of thing is foolish。
I want to see you this evening.
All you have to do is to finish it quickly.
We found a house to live in.
She came here to study English.
I warned the patient not to eat cold water after the operation.
We often hear Dick _______the piano in the next room.
I'm sorry to _________(keep) you waiting.
We are too young ___________(see)the old society.
The teacher happened ___________(corret) our papers when I came in.
They seemed ___________(discuss) something important.
It's a great honour ________(invite)to Mary's birthday party.
Itis impossible for us _______(_make)up the lost time.
It is impossible for lost time _______(_make)up.
I wish ________(send) to work in the country.
Can you tell me which is the car ________ (repair)
He went to the hospital_____________ _(examine)
He was said _______________(live) in London for twenty years.
I’m sorry _________________________(interrupt) you.
The novel is said ________________________________(translate) into many language.
He appeared to__________________________________(question)for many times.
疑问词＋不定式结构
疑问词who,what,which,when,where,whether,how后可接不定式构成不定式短语，在句中作主语、宾语、表语等。如：
①_________________________(何时前往) London has not been decided yet.
②Mr. Smith didn't know _______________________________(离开还是呆在那里)
③I asked Professor Xu __________________________(怎样把英语学好)
④The question was _______________________________(从哪得到所需药品)
不定式的否定式
1）Tell him ___ the window.
A. to shut not
B. not to shut
C. to not shut
D. not shut
2) She pretended ___ me when I passed by.
A. not to see
B. not seeing
C. to not see
D. having not seen
3）Mrs. Smith warned her daughter ___ after drinking.
A. never to drive
B. to never driver
C. never driving
D. never drive
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
5) The patient was warned ___ oily food after the operation.
A. to eat no
B. eating not
C. not to eat
D. not eating
不定式的用法
作主语
_______________________(爱与被爱)is the greatest happiness one can get.
___________________(尊重别人) is to be respected
常见句型：句型1.
eg: It takes us an hour to get there by bus.
句型2：
eg: It’s our duty to help the poor.
句型3：
It is difficult for us to finish writing the compositionin a quarter of an hour.
It is stupid of you to write down everything the teacher says.
句型4：
It seemed impossible to save money.
2.作表语
①To be kind to the enemy is _________________________(对人民的残忍)
②My chief purpose is _______________________________(指出问题的困难所在)
③What I would suggest is ____________________________(推迟会议）
位于seem,appear,remain, prove 等系动词之后
The method proved _____________________(是高效的)
He ___________________________(好像已经知道)the news
It _______________________(留到以后去看) whether you are right..
3.作宾语
1）v+动词不定式。
决心学会有希望
拒绝设法愿假装。
主动答应选计划，
同意请求准备帮
渴望担得起失败，
企图打算等安排i
2）V + 疑问词+ 不定式(V: ) (what, when, where, which, how, whether等，但不包括why.)
He told/ showed/ taught us how to do the work.
I don’t know what to do.
We are discussing how to do it.
I don’t know where to go.
I can’t make up my mind when to go.
3）：在find, think, consider, 等动词后，当不定式短语作宾语，后边又有宾补时，常用it 做形式宾语，把宾语放在it 后，把不定式放到后面去。
I found it difficult to study English well. I think it possible to do the work well.
4）与表示希望，期望，意愿的动词expect, hope, mean, intend, plan, think, want, wish的过去时态连用，表曾经打算设想做却没做的事.
eg: They expected to have gone to the match, but the tickets were all sold.
They had expected to go to the matc h
I intended to have called on you,but was prevented from doing so.
We meant to have stayed there a week.
I wanted to have dropped her a line, but forgot to do so.
5)作介词宾语
But 和except
The teacher made no comments except to tell him to work hard.
He had no choice but to sit there as usual.
There is nothing we can do but wait patiently.
4..做补语
1). V+sb/sth + 不定式
2). 在see,hear,watch,notice,feel,observe,let,make,have+sb/sth+不带to的不定式，
He saw two men enter the room. I was made to do it
5.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：
①The next train to arrive is from Washington.
②Have you anything to be taken to your sister?
③Do you have anything to say on the question?
④Would you please give me some paper to write on?
⑤My wish to visit France has come true at last.
1). 动宾关系:
I have a lot of work to do. Give me a piece of paper to write on.
I have a lot of clothes ________________________我要洗很多衣服。
________________________我有许多衣服要洗
2). 主谓关系:
She is the best person to finish the work.
Women and children were the first to get into the lifeboat.
3). 修饰性关系(同位),它所修饰的词多为抽象名词.
need, time, way, right, chance, courage, reason, wish, movement.
eg: There is no need for him to come. He has no time to read the book.
六、作状语
1）目的状语To… , in order to, so as to, so(suc h)… as to… (如此……以便……)
He ran so fast as to catch the first bus. 他飞快地跑以便赶上第一班车。
I come here only to say good-bye to you. 我来仅仅是向你告别。
2）结果状语enough to/too…to…/only to结构中。
eg: The question is too difficult to answer.
They worked hard enough to finish their work.
He searched the room only to find nothing.
3) 原因状语be +adj +to do sth
a). 表感情的adj. happy, sorry, afraid, pleased, sure lucky, ready, eager, able, determined, disappointed, surprised.willing, angry, careful,
I'm glad to see you. I’m very sorry to see you. He was afraid to leave him home.
b). Sth+ be +adj + 不定式
interesting, difficult, easy, important, possible, expensive, dangerous, useful.
eg: The question is easy to answer. He is difficult to teach.
She is hard to get along with . The river is dangerous to swim in.
The chair is comfortably to sit on.
1)The chair looks rather hard, but in fact it is very comfortable to ___.
A. sit
B. sit on
C. be seat
D. be sat on
2)________ late in the morning, Bob turned off the alarm.
A. To sleep
B. Sleeping
C. Sleep
D. Having slept
3)I'm going to the supermarket this afternoon. Do you have anything ________ ?
A. to be buying
B. to buy
C. for buying
D. bought
4)Having a trip abroad is certainly good for the old couple, but it remains __whether they will enjoy it.
A. to see
B. to be seen
C. seeing
D. seen
5)I've worked with children before, so I know what ________ in my new job.
A. expected
B. to expect
C. to be expecting
D. expects
6)I've worked with children before, so I know what ________ in my new job.
A. expected
B. to expect
C. to be expecting
D. expects
7）An army spokesman stressed that all the soldiers had been ordered ________ clear warnings before firing any shots. A. to issue B. being issued C. to have issued D. to be issued
8）Robert is said ________ abroad, but I don't know what country he studied in.
A. to have studied
B. to study
C. to be studying
D. to have been studying
9）Do let your mother know all the truth.She appears ________ everything.
A. to tell
B. to be told
C. to be telling
D. to have been told
10）Sandy could do nothing but ________ to his teacher that he was wrong.
A. admit
B. admitted
C. admitting
D. to admit
简析：选择A。order之后接带to的不定式充当主语补足语，即：sb. is ordered to do sth.
She watched the children ________ in the garden.
A. to be played
B. to play
C. play
D.to have played
简析：选择C。在表示感觉、视听等生理活动的动词后，用作宾语补足语的不定式不带to。
二、考查不定式的时态
简析：选择A。四个选项为动词不定式的四种形式，A表完成式，B为一般式，C为进行式，D项是完成进行式。根据题干，应选A项。
三、考查不定式的语态
Do let your mother know all the truth.She appears ________ everything.
A. to tell
B. to be told
C. to be telling
D. to have been told
简析：选择D。结合句子语意可知，妈妈似乎已经(于说话前)知道了一切，要用不定式的完成式；另外，She与tell 之间是一种被动关系，因此要用不定式的被动式to have been told。
四、考查不定式的否定结构
The teacher asked us ________ so much noise.
A. don't make
B. not make
C. not making
D. not to make
简析：选择D。与其它非谓语动词一样，不定式的否定形式即在to do的前边加上否定词not。
五、考查不定式的省略形式
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
简析：选择A。在运用不定式结构时，有时为了避免重复，在不引起歧义的前提下，把与前边相同的部分省略，只保留不定式符号"to"。又如：
- Would you like to go swimming with me this afternoon?
- I'd love to, but I have something important to do then.
六、考查是否保留不定式符号"to"
简析：选择A。but是介词，后面接不定式。当谓语动词是do, does或did时，后面接不带to 的不定式，如上题；当谓语是其它动词时，后面接带to的不定式。如：The bear has no choice but to go back to sleep again.另外，有些动词(如make, find, see等)接不带to的不定式作宾语补足语，但转换成被动语态时，则要接带to的不定式充当主语补足语。如：The boss made the workers work hard. → The workers were made to work hard.
七、考查特殊语言结构中的不定式形式
I feel it is your husband who ________ for the spoiled child.
A. is to blame
B. is going to blame
C. is to be blamed
D. should blame
简析：选择A。题干的宾语部分是一个强调句型，强调其主语your husband。固定短语"be to blame" 意为"该受指责"，主动形式表被动意义，不能用to be blamed形式。类似的情形如：This flat is to let. (这套房子待租。) 又如：
With a lot of difficult problems ________ , the newly-elected president is having a hard time.
A. settled
B. settling
C. to settle
D. being settled
简析：选择C。根据句子所提供的语境the newly-elected president is having a hard time，说明新任总统现在和将来都有难以解决的问题，要用to settle作定语。
跟踪练习：
1. In order to gain a bigger share in the international market, many state-run companies are striving ________ their products more competitive.
A. to make
B. making
C. to have made
D. having made
2. She reached the top of the hill and stopped ________ on a big rock by the side of the path.
A. to have rested
B. resting
C. to rest
D. rest
3. There is a new problem involved in the popularity of private cars ________ road conditions need ________ .
A. that; to be improved
B. which; to be improved
C. where; improving
D. when; improving
Key:
1-3 ACA
动词不定式的用法学案
动词不定式的用法 非谓语动词是指那些在句中不能单独充当谓语的动词，可分为不定式，动名词，现在分词和过去分词。 1. 不定式形式:由to＋动词原形构成。 2.用途： 在句中不能作谓语。它具有动词的性质，本身可以带宾语和状语。动词不定式在句中除了不做谓语，可以作句子任何成分。动词不定式的被动形式除了一般形式外还有其完成式和进行式。 动词不定式及其短语还可以有自己的宾语、状语，虽然动词不定式在语法上没有表面上的直接主语，但它表达的意义是动作，这一动作一定由施动者发出。动作的施动者我们称之为不定式的逻辑主语，其形式如下： 主动形式被动形式 一般式（not） to make （not） to be made 完成式（not） to have made （not） to have been made 进行式（not） to be making (1)语态 如果动词不定式的逻辑主语是这个不定式所表示的动作的承受者，不定式一般要用被动语态形式。如： It's a great honor _____________ (invite) to Mary's birthday party.（不定式作______） I wish ______________ (send)to work in the country.（不定式作__________） Can you tell me which is the car________________( repair)（不定式作________） He went to the hospital______________________ (examine).（不定式作__________） (2)时态 1) 现在时：一般现在时表示的动词，有时与谓语动词表示的动作同时发生，有时发生在谓语动词的动作之后。 I hope_________(see) you again. = I hope that I'll see you again. 我希望再见到你。 2) 完成时：表示的动作发生在谓语动词表示的动作之前。 I'm sorry __________________ (give) you so much trouble. 3) 进行时：表示动作正在进行，与谓语动词表示的动作同时发生。 He seems ____________________ (eat) something. 4) 疑问词who, what, which, when, where, whether, how后可接不定式构成不定式短语，在句中作主语、宾语、表语等。如： Eg. 什么时候出发去伦敦到现在还没有决定呢。 _______________________________________________________________________我问陈老师怎么样学好英语。 __________________________________________________________________________
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, come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 the light before you leave. 在你离开之前别忘了关灯。 注意：动词不定式的否定形式是在不定式前直接加not，即not to do sth.。如： Dave told me not to wake up Kate. 大卫告诉我别叫醒凯特。 2. 不带to的不定式结构 以下几种情况使用不带to的动词不定式： （1）在固定词组had better之后。注意：had better的否定形式是had better not do sth.。如： You had better go home now. 你最好现在回家。 It’s cold outside. You’d better not go out. 外面很冷，你最好不要出去。 （2）在let, make, see, feel, watch, hear等感官或使役动词后，要跟不带to的动词不定式作宾语补足语。如： I made them give me the money back. 我迫使他们把钱还给我。 I didn’t see you come in. 我没看见你进来。 （3）在引导疑问句的why not之后。Why not+不带to的不定式是Why don’t you do的省略，可以用来提出建议或劝告。如： Why not study with us？ 为什么不和我们一起学呢？ Why not take a holiday?=Why don’t you take a holiday？ 为什么不休个假呢? （4）不定式动词在介词but, except, besides后面时，如这些介词前有实义动词do的各种形式，则后接不带to的不定式，否则带to。如： I have no choice but to accept the fact. 除了接受这个事实我别无选择。 What do you like to do besides swim? 除了游泳你还喜欢做什么？ （5）为了避免重复，不定式可省去to。如： I’m really puzzled what to think or say. 对于想什么或说什么，我真的很困惑。
疑问词+不定式-讲解及各题型练习
英语语法------ 疑问词+不定式 一、基本用法说明 疑问词what, which, who, when, where, how及连接副词whether与不定式连用而形成一个短语，这个短语相当于一个名词，可在句中做句子的主语、宾语或表语等。如： 1. 作主语。如： What to do is not decided yet. 该做什么还没有确定。 How to begin is more difficult than where to stop. 如何开始比到哪里停止还困难。 2. 作宾语。如： Do you know when to start? 你知道什么时候开始吗？ I showed her which button to press. 我告诉她应该按哪一个按钮。 有时还可用于介词后作宾语。如： I found a book on how to avoid having a heart attack. 我找到一本书谈如何避免心脏病复发。 She was worried about how to fill her leisure time. 她为如何打发她的闲暇时间而发愁。 3. 作表语。如： The question is how to carry out the plan. 问题是怎样执行这个计划。 The difficulty was how to cross the river. 困难在于如何过河。 二、“疑问词+不定式(短语)”是一个很有用的结构，它的作用相当于一个名词性从句，通常在某些动词(如tell, know, imagine, learn, decided, forget, remember, consider, un derstand等)后面做宾语，有时也用作主语、表语、同位语等。如： He didn’t know how to answer her. 他不知道该怎样回答她。 When to start has not been decided. 何时动身尚未决定。 I don’t know who to ask advice from. 我不知道应向谁征求意见。 Would you please advise me which to buy? 你能否告诉我该买哪一个才好? Please explain (to me) where to begin and how to do it. 请 (给我)解释该从哪里开始及该怎么做。
动词不定式用法归纳
动词不定式用法归纳 动词不定式没有人称和数的变化，在句中不能独立作谓语。但动词不定式具有名词、形容词和副词特征，在句中可以作主语、宾语、宾语补足语、定语、表语和状语等多种成分。另外，动词不定式具有动词特点，可以有自己的宾语和状语，组成动词不定式短语。动词不定式的肯定形式是to＋do；其否定形式是not to＋do。 1．作主语 可以直接作主语。如： To see is to believe． 但在英语中，常用it作形式主语，真正的主语即动词不定式放在后面。如： It's wrong to play tricks on other people． It's our duty to keep our environment clean and tidy．（Lesson 10）． 点击规律：动词不定式在句中作主语时，常放在It is ＋adj．（形容词）＋to do sth．或 It is ＋n．（名词）＋to do sth．句型中，it仅作形式主语。 2．作宾语 a.以下动词只能to do 作宾语。 attempt企图 enable能够 neglect忽视 afford负担得起 demand要求 long渴望 arrange 安排 mean意欲，打算 begin开始 expect期望 appear似乎，显得 determine决定 manage设法 cease停止 hate憎恨，厌恶 pretend假装 ask问 need需要 agree同意 desire愿望 love爱 swear宣誓 volunteer志愿 wish希望 bear承受 endeavor努力 offer提供 beg请求 fail不能 plan计划 bother扰乱；烦恼 forget忘记 prefer喜欢，宁愿 care关心，喜欢 happen碰巧 prepare准备 decide决定 learn学习 regret抱歉，遗憾 choose选择 hesitate犹豫 profess表明 claim要求 hope希望 promise承诺，允许 start 开始 undertake承接 want想要 intend想要 refuse拒绝 decide决定 learn学习 contrive设法，图谋 incline有…倾向 propose提议 seek找，寻觅 try试图 b．love，like ，begin，start，hate ，prefer等词后面可以接不定式。 点击规律：上述动词后面除接不定式外，还可以接动名词，意思无很大区别。 提示板：like doing指经常性动作，而like to do指一次性的动作。如： I like swimming，but I don't like to swim now．我喜欢游泳，但我现在不想游。 c．stop，forget，remember，go on ，try等词或短语后面可以接不定式。 点击规律：上述动词后面接不定式和接动名词意思大不相同。 1）stop to do sth．：停止一件事，去做另一件事。 stop doing sth．：停止正在做的事。 例句：When the teacher came in，the students stopped talking；when he came out，the students stopped to talk． 当老师走进来时，学生们停止说话；当老师走出去时，学生们又开始说话。 2）思考：forget，remember，go on，try等词或短语后面接不定式和动名词用法有何区别d．在find／feel＋it＋adj．＋to do sth．句型中，it是形式宾语，真正的宾语是后面的动词不定式。如： The man downstairs found it difficult to get to sleep． I feel it easy to recite the text． 点击规律：某些动词或短语后面既可以接动词不定式作宾语，又可接动名词作宾语，二者用法上的区别可以通过造句子加以区分，如上面stop例句。 3．作宾语补足语 a．下面的动词要求不定式做宾补：动词+宾语+动词不定式 ask要求，邀请 get请，得到 prompt促使 allow允许 forbid禁止 prefer喜欢，宁愿 announce
动词的不定式的用法记忆口诀
动词的不定式的用法记忆口诀 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。 英语时刻表达法记忆口诀及详解 时刻表达法作用大，衣食住行离不开它。 整点时把点钟数打，时分俱全不好表达。 请记下列几种方法：先时后分莫给弄差。 若要说明几点过几分，可把past和after来抓。 前分后时不能搞差，要说几点几分差， to前分后时来表达。 ----------------------------------------------- 英语时刻的表达法详解 用英语表达时刻主要有以下两种方法： ?直接表示法（先时后分）。如： 9 ： 25 读作： nine twenty-five 12 ： 30 读作： twelve thirty ； twelve-thirty ?添加介词表示法（先分后时）。如：
动词+疑问词+动词不定式补充练习
“动词+疑问词+动词不定式”补充练习 一、单项选择。 1.I have no idea when ___ her the bad news. A. will tell B. telling C. tell D. to tell 2. —Will you please show me how to do the role-play exercise? —Sure. Now let me tell you ____ first. A. which to do B. how to do C. when to do D. what to do 3. I need your help because I don’t know ____. A. how to do it B. how to do C. what to do it D. what should I do 4.—How are you feeling here? —It’s quite hot. I don’t know ____ to go or stay. A. how B. when C. whether D. where 5.—I don’t know ____ to do with this maths problem.It’s too hard. — You can ask your classmates or teachers for help. A. which B. how C. what D. when 6. —Millie, could you give me some advice? I don’t know ____. —Why don’t you wear this red shirt? A. when to wear B. what to wear C. how to wear D. where to wear 7. I’m go ing on a field trip but I haven’t decided__________. A. what to do B. to do what C. where to go D. to go where 8 —This physics problem is too difficult. Can you show me ________，Wang Lin？—Sure. A. what to work it out B. what to work out it C. how to work it out D. how to work out it 9. Excuse me. Would you please tell me ________ buy a digital camera？ A. what to B. where to C. what I can D. where can I 10. There isn't any difference between the two. I really don't know ________. A. where to choose B. which to choose C. to choose what D. to choose which 二、用“疑问词＋不定式”改写下列句子。 11. How we should do it was discussed last night. __________ was discussed last night. 12. I didn’t kn ow where I should go. I didn’t know ____________. 13. The difficulty was how we should cross the river. The difficulty was ____________ .
动词不定式的用法荟萃
动词不定式的用法荟萃 不定式在句子中可做主语、宾语、表语、定语、状语和宾语补语。 1)不定式做主语一般表示具体的某次动作。 【例如】 To complete the 30storied building in one year was quite a difficult task. To do that implies taking responsibility. 当主语较长，谓语较短时，常用it做形式主语，而将不定式放到 谓语的后面。 【例如】 It is important for modern young people to master at least two foreign languages. It做形式主语，不定式放在谓语动词之后常用于下列结构中： a) It is＋形容词(easy, important, difficult, foolish,
inconvenient, unnecessary, right, wrong...)＋( for/of sb.)＋ 不定式 【例如】 It is essential to reserve a table in advance of Christmas Eve. hard to put my hopessintoswords. It is not easy to catch fish with your hands only. It is important for us young people to learn English and master it. b) It is＋名词(a pleasure, a pity, a pleasant thing, one’s du ty, an honor, a shame, a crime, no easy job...) ＋不定式 It is a sheer waste of time to read that kind of trash. It is a pity to have to go without her. It is a glorious death to die for the people.
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）
不定式作宾语的主要动词口诀
心形白云草地湖水小路 英语中能接不定式作宾语的主要动词口诀（25个主要动词）三个希望两答应 hope, wish, expect, agree, promise 两个要求莫拒绝。demand, ask, refuse 设法学会做决定，manage, learn, decide/determine 不要假装在选择。pretend, choose/select 打算提出俩计划，intend, offer, plan, mean 申请失败负担起，apply, fail, afford 准备愿望又碰巧。prepare, desire, happen I hoped to have seen you in Paris last week. 我原指望上星期能在巴黎见到你。 I wish to be forever with him. 我希望能永远和他在一起。 I expect to see you soon. 我期盼着能马上见到你。 Sally agreed to be my date tonight. 莎丽同意今晚跟我出去约会。 She promised to be a film star. 她有希望成为一名电影明星。 I demand to know why he had done it. 我要求知道他为什麽做出这种事。 Everyone asks to have a sweet life. 每一个人都要求拥有甜蜜的生活。 This is the reason why he refused to accept the fact . 这就是为什么他不想接受这个事实的原因。 We finally managed to get there in time. 最后，我们设法及时赶到了那里。 Anyone can learn to speak English. 任何人都可以学着说英语。 I decided to conquer English from today! 我决定从今天开始攻克英语！ Jim has determined to work harder than before. 吉姆下决心比从前更努力工作。 She pretended to be happy when she saw her father. 她看到她爸爸的时候假装高兴的样子。 Can you choose to fall? 你真能选择堕落吗? I intend to improve my English test, because it is very bad. 我打算提高我的英语成绩，因为老是考得很糟糕。 Never offer to teach fish to swim. 不要教鱼游泳(不要班门弄斧)。 I plan to translate the novel.
动词不定式用法讲解
动词不定式用法小结 动词不定式用法小结 动词不定式是一种非谓语动词形式，其结构为“to＋动词原形”，其中to不是介词，而是动词不定式的符号，称为小品词，动词不定式没有人称和数的变化。动词不定式和其后面的名词等构成不定式短语，在句子中可以用作主语、表语、宾语、补足语、定语、状语等。 一. 作主语例如： To be a doctor is hard. 做医生很难。 To learn English well is not easy. 学好英语不容易。 动词不定式（短语）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（短语）放在句子的后部。例如上面的句子可以表示为： It is hard to be a doctor. It is not easy to learn English well. 再如： It’s important to plant trees in spring. 如果动词不定式的动作是谁做的，可以在动词不定式前面加一个由介词for 引导的短语，称为不定式的复合结构。例： It’s good for us to read English aloud in the morning. 对我们来说每天早晨大声读英语是很有益的。 It is important for students to use English every day. 对学生来说每天使用英语是很重要的。 二. 作表语： 动词不定式（短语）作表语常用于系词be的后面。例： His work is to drive a car. 他的工作是开车。 My job is to feed animals. 我的工作是饲养动物。 Her ambition is to be a doctor. 她的理想是当医生。 三. 作宾语 动词不定式（短语）可以放在一些动词后面用作宾语，能以动词不定式作宾语的动词有：begin,start, want, forget, remember, show, learn, like, hate, love, ask等。例： I want to tell you a story. 我想给你讲个故事。 They begin to work at eight every morning. 他们每天早晨8点开始工作。 Don’t forget to lock the door. 别忘了锁门。 Would you like to go and have a picnic with us tomorrow? 明天和我们一起去野餐好吗？
动词不定式的形式
一、动词不定式的形式 1. 动词不定式各种形式有：一般式、完成式、不定式的进行式、不定式的完成进行式、 不定式一般式和完成式的被动语态。 以下几种情况用不定式的主动形式表示被动意义： a. 在某些静态形容词后作状语的不定式：如 easy ， hard ， difficult ， tiresome ，good ， heavy ， interesting 等。 b. 当不定式的动作与所修饰的名词是逻辑上的动宾关系时，可以用主动表示被动。 c. 在too … to 或 enough to 结构中，不定式主动表被动。 2. 不定式的否定式 不定式的否定形式是在不定式前加否定词 not 或 never 等。 3. 不定式短语 a. 疑问词 + 不定式 在 tell ， show ， teach ， find out ， decide ， discuss ， learn ， ask ， advise ，remember ， know 等动词后常用“疑问词 + 不定式”这一结构作其定语。 b. of/ for sb to do 当不定式作主语时，可以有自己的逻辑主语，指明动作的执行者。常常使用 for 来引出不定式的逻辑主语，但当和不定式搭配的形容词是表示主语的品行、性格特征和行为表现时，需要用 of 来代替 for ，引出其逻辑主语。 使用 of 的此类形容词有： kind ， foolish ， stupid ， wise ， nice ， clever ，silly ， rude ， careless ， thoughtful 等。 二、动词不定式充当各种句子成分的具体用法。 动词不定式可以充当除谓语之外的任外的任何句子成分。 1. 不定式作主语
特殊疑问词todo
1. 我们可以用“疑问词+动词不定式”结构做动词的宾语。疑问词包括疑问代词 what 、which 、who 和 疑问副词how 、when 、where 等。但所有疑问词中，只有why 不可以和动词不定式连用。 2. 常和“疑问词+动词不定式”结构连用的动词及短语有：know 、learn 、see 、hear 、ask 、tell 、advise 、decide 、explain 、find out. 另外，“疑问词+动词不定式”结构前，有时也可以是 sure 、clear 等的形容词 翻译：(1)我不知道该做什么。 I don’t know what to do. (2)你怎么知道在那里可以找到我How did you know where to find me ? (3)我不确定下面该做什么。I am not sure what to do next. 3.注意： （1）有些动词，如advise, ask, show, teach, tell 等，其后可以接双宾语。 （2）有些疑问词，如what, which, whose, how many, how much 等，其后先接一个名词再接动词不定式。 （3）“疑问词+动词不定式”结构在句子中可以做主语和表语。 （4）“疑问词+动词不定式”结构可以改写成由该疑问词引导的从句。 练习： （1）Sandy 问我怎样去那。Sandy asks me how to go there. （2）他不知道该带多少钱。He doesn’t know how much money to take. （3）何时开始是一个问题。When to start is a question. （4）我的问题是在哪里可以找到答案。My question is where to find the answer. 一、单项选择 （ ）1. — I will go to Harbin for my summer vacation. What about you ?
非谓语动词之动词不定式(todo)的用法
非谓语动词之动词不定式（to do）的用法 非谓语动词是指在句子中不是谓语的动词，主要形式有：不定式、动名词和分词（现在分词和过去分词）。 “to do”动词不定式的变形 动词不定式的用法 充当主语（一般会用it 当形式主语） To swim here is dangerous. = It is dangerous to swim here. To pass this English exam is unlikely. = 充当表语（多数情况下，可以转换成动词不定式做主语） My job is to help with your English learning. To help with your English learning is my job. 充当宾语（只能做某些动词的宾语，一般不做介词的宾语；有时用“it”做形式宾语） I decided to attend this meeting last night. I find it necessary to learn a foreign language. 注意：当以下动词欲接动词作宾语时，只能跟不定式作宾语。 decide, determine, learn, wish, hope agree, plan, pretend, dare, refuse, fail prepare, try, manage, help, promise offer, beg, demand, afford, arrange, be supposed
充当宾语补足语 I persuaded him to make a speech in public. 注意：在感官动词／使役动词／help后（see, hear, watch, notice, make, have, let后不定式做宾补时，可省略“to”） I saw them have a disagreement on who should sweep the floor. （我看到了他们争论的整个过程） 但，感官动词后面也可接Ving形式，表示正在进行。 I saw them arguing about who should sweep the floor. （我看到他们正在争论谁该扫地，并不一定看到了整个过程） 充当状语（目的，原因，结果状语，其逻辑主语与句子主语一致） I wrote him a letter to further explain this matter. （目的状语） I’m sorry to bother you.（原因状语） He queued for hours at the box office only to find that the show was sold out. （结果状语，only + to find/realize/discover表示出乎意料的结果） 充当定语（不定式作定语，要放在所修饰的词的后面） I have a lot of dishes to wash. Do you have anything to say There are 3 questions to answer. 一些固定句型中不定式省略“to” had better would rather do… than do… why not do “except/but” 有“do” 无“to”，有”to”无“do” have nothing to do but do… do everything but/except have no choice but to want nothing but/except to 当两个或多个作用相同的不定式并列（and/or/than）时，通常只保留第一个不定式的“to”. He told me to stay there and wait for him. It’s easier to persuade people than force them. To try and fail is better than not to try at all. （否定式中“to”不能省略）
动词不定式的ing形式 总结
动词不定式、动名词形式总结 1. I regret to inform （inform）you of the bad news. 2. I immediately regret answering （answer）in the way I did. 3. He prefers walking （walk）to work every day. 4. I feel a bit tired ,and I’d prefer to take （take）a bus. 5. A policeman’s duty is protecting (protect) people’s safety. 6 .Your work tonight is to protect (protect) the witness from being attacked (attack). 7 . I must apologize for not letting (let) you know earlier. 8. I strongly object to being treated (treat) like a child. 9. The car needs cleaning (clean). 10. The computer wants repaired (repair)by an expect. 11. The books deserve to be read (read). 12. The books are worthy of to read (read). 13. It’s not use having (have) a car when you don’t know how to ride (ride) it . 14. It’s a waste of time fishing (fish) like you. 15. It’s nice meeting (meet) you. 16. It’s a pleasure going (go) there with you. 17. The police have had trouble/difficulty/problem keeping (keep) order. 18. I’ve had a hard time learning (learn) English. 19. Don’t forget to look (look) after my garden while I am on the trip. My flowers needs to be watered (water) at least twice a week . 20. The little girl is afraid to go (go) to school alone, for she is afraid of knocking (knock) down by the cars in the busy street. 21. After listening test, students then went on translating (translate) the sentences. 22. I don’t enjoy being laughed (laugh) attack by other people. 23. He hates answering (answer) the phone , and very often just lets it ring (ring) 24. They suggest going (go) to the Summer Palace ongoing National Day. 25. The young people intend to stay (stay) there for good. 26. I never expect to see (see) him again. 27. I hope to meet (meet) you when you come to Beijing. 28. He pretended not to see (not see) us , and walked quickly into a shop. 29 The boy admitted having broken (have broken) the window. 30. They reduce to do (do) anything that is against the law. 31. Many people prefer living (live) in the countryside. 32. We won’t go outside today, if you prefer to stay (stay) at home. 33. He teaches driving (drive) inform his spare time. 34. He says he is going to teach me to drive (drive) a car today. 35. We didn’t come for a visit, we mean to stay (stay). 36. Missing the train means waiting (wait) for two hours. 37. A great number of students helped to build (build) the park. 38. We couldn’t help laughing (laugh) when we heard the joke. 39 .If you can’t sleep, try lying (lie) on your side. 40. Try to finish (finish) your work within two weeds.