动词不定式的用法大全

动词不定式的用法大全
动词不定式的用法大全

动词不定式的用法大全

今天一起学习动词不定式的用法大全?快来一起学习吧。下面就和大家分享,来欣赏一下吧。

动词不定式的用法大全

一、动词不定式是什么?

简单来说:to do,非谓语动词形式之一

二、位置?

须位于被其修饰的名词或代词之后

如:Is this the best way to help him?

三、作用?

具有名词,形容词,和副词的作用

四、在句中可做的成分?

除了不可做谓语外,其他成分都可以充当如:主语,宾语,定语,表语,宾补,状语(目的,结果,原因)

例句:

1.To see is tobelieve.眼见为实/百闻不如一见。(做主语)

2. I wish to be sentto work in the country. (做宾语)

3. Can you tell me which is the car to be repaired (做定语)

4. My work is to clean the room every day. (做表语)

5. He went to the hospital to be examined . (做目的状语)

6. I don’t think it rightto do it that way. (做宾补)

注意:英语中为了避免头重脚轻(说白了就是平衡句子结构的需要),往往to do一般用it作形式主语(It+be+形容词/名词词组+to do sth/ that)如:To help each other is good. =It is good to help each other .这句话的主语是老师标紫色的字体。

五、不定式的用法1.不定式常可用来修饰人也可以修饰物,表示已经将要发生的动作。如:(1)He was the first guest to arrive. 他是第一个到达的客人。(2)He was a brave man to do what he did.他是个勇者才有这样的行为。

注意:在主谓关系中,不定式所修饰的名词或代词前面常有only,first,last,next,序数词、形容词最高级等修饰或no,all,any 等限定的中心词也就是我们常说的表示“第几次(个)做某事”通常用to do ,不用doing

3.很多特定的名词后也可用不定式做定语,这样的名词常用的

有:way,time,reason,chance,opportunity,need,wish,effort,right,ambition等。

4.当不定式中的动词与所修饰的名词或代词构成动宾关系

且动词为不及物动词时,需用“不定式+介词” 的结构,此时介词不能省略。如:He is the man to depend on .I need a pen to write with. 我需要一支笔写字。(这种不定式+ 介词做定语的形式也可转换成:介词+which+to do 做定语),如:I need a pen to writewith.= I need a pen with which to write.

注意:如果被不定式修饰的名词为place, time, way ,不定式后面的介词,习惯上可以省去介词,如:The old man is lookingfor a quiet place to live. 5.当不定式做定语时,有两种情况可用不定式的主动表被动。1.There be句型中不定式to do和to be done都可表被动,可以不区别。如:There are a lot ofthings to do/to be done this afternoon.今天下午有许多事要做。2.当不定式与所修饰词有动宾关系同时又与本句中的另一个名词或代词构

成主谓关系时,可用不定式的主动形式to do 表示被动含义。如:Mr.Smith,I have some questions to ask .史密斯先生,我有一些问题要问。(不定式to ask的动作执行者是主语I)(主谓+ 动宾)Please give me somebooksto read.请给我一些书读。(不定式toread的动作执行者是句中的me)(动宾+ 主谓)但:Im going to the post office;do you have anything to be sent?我要去邮局,你

有什么要寄的东西吗?(此句中send这个动作不是句中you发出的,所以用了被动) 6. 动词不定式作后置定语有以下几种:1.主谓关系:(1)we need someone to help with the work.(some will help with the work)我们需要有人来帮忙做这工作。(2)The next train to arrive was from NewYork.下一列到站的火车是从纽约开

来的。(可构成逻辑上的主谓关系,为什么叫:逻辑上的主谓关系,因为真正的谓语是后面的was,而刚好arrive 也是主语train 所发出的动作)2.动宾关系:(1)I have many letters to write(to write many letters)我有许多信要写。(2)I have nothingto say on this question.在这个问题上,我没有什么话要说。(准备要说,时间很近)(动宾关系)3.同位关系:不定式与所修饰的名词指的是一回事。(不定为解释前面名词具体内容,其实这里会相当于一个同位从句)We have made a plan to learn from LeiFeng4.动状关系:被修饰的名词实际上表示动词不定式动作的方式,时间等。这些名词多是抽象名词。That’s the way to do it.那样做才对。I have no time to go there我们没有时间去那儿。find time to visit his hometown=findtime in which he visitis不定式作状语一般都是说

明动作的目的,可以把不定式提前都句首,句子意思也说的通。(即为不定式作状语)He got up early to catchthe first bus.=to catch the first bus,he got up early.

为了提高英语写作的孩子们,老师在每期更新的公众号最下边都会有两个句子供大家练习:

1.(中译英)在一生当中,当你有困难的时候帮助你和当你成功的时候离开你的人才是真的朋友。

2.20XX年考研英语题(英译中):

mental healthallows us to view others with sympathy if they are having troubles1,withkindness if they are in pain1, and with unconditional love no matter who they are.

动词不定式的特殊用法整理!非常有用

动词不定式的特殊用法整理

PART.01

Its for sb.和Its 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:

Its 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。

Its 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。)

PART.02

用作介词的to

to 有两种用法:一为不定式+动词原形; 一为介词+名词/动名词, to 在下面的用法中是第二种,即to+ 名词/动名词:admit to承认,confess to承认,be accustomed to 习惯于,be used to 习惯于,stick to 坚持,turn to开始,着手于,devote oneself to 献身于,be devoted to 致力于,look forward to 盼望,pay attention to 注意

PART.03

省to 的动词不定式

1) 情态动词( 除ought 外,ought to):

2) 使役动词let, have, make:

高中英语动词不定式用法大全(名师总结必考语法知识点,值得下载) 英语动词的非谓语形式为三种:动词不定式、动名词和分词。非谓语动词没有人称和数的变化。 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。 To say is to believe.眼见为实。 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 pla nt 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:(在形式上,位于系动词后的就是表语。从含义上讲,表语是回答主语“是什么”或“怎么样”的语法成分。) 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

动词不定式的用法有哪些? 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, expect,plan,begin,start,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. 不定式有时和一连接代(副)词一起构成宾语。 如:I don’t know what to say.我不知道说什么。 3. 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,have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 y ou 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 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

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)。

不定时的用法 to do 的其它用法: 1. 时态和语态形式to do/to be done/to be doing/to have done/to have been done/to have been doing (1) 一般式表动作通常与谓语动词所表动作同时或在其后发生; 进行式表动作与谓语动作同 时进行;完成式表动作发生在谓语动作之前; pretend / believe /say/seem/happen/prove/plan/hope/expect/should like/would like + to have done 表未曾实现的行为; 完成进行式表动作在谓语动作之前已开始并一直进行着,到说话时为止,该动作可能停止,也可能还在继续。 People began to wonder how long the disaster would last. The children pretended to be reading aloud when the teacher came in. I didn’t expect you to be waiting for me so long. The crowd cheered wildly at the sight of Liu Xiang, who was reported to have broken. the world record in the 110- metre hurdle race. He’s said to have written a new novel. I would like to have had your help. I hoped to have seen her . He planned to have gone abroad. He was said to have been living in New York for twenty years. (1)主动式表逻辑主语为不定式动作的执行者;被动式表逻辑主语是不定式动作的承受者。 I hope to finish reading the book tonight. We are invited to a party to be held in our club next Friday. 2.to do 的主动表被动 (1)to do 作定语与被修饰词构成动宾关系,同时又和句子主语构成主谓关系。 I have a lot of papers to deal with. (2) be + 性质adj. + to do . easy/hard/difficult/interesting/heave/pleasant/comfortable/safe/dangerous/impossible Tom is pleasant to work with. This book is difficult to understand. I like getting up very early in summer. The morning air is so good to breathe. (2)be + let /blame/ seek It seemed that water was to blame. The cause isn’t far to seek. The house is to let. (3)wh- + to do I had no idea who to turn to for help the time I lost. How to divide labor among them is still a question. (5) there be + 主语+ to do 中,当强调某人完成某事时用主动形式;当强调某事必须被完成用被动形式。 There’s many work to do. (sb. has to do the work. )/ to be done.(the work has to be done.) 3.to do 的逻辑主语是其所表动作的承受者时用被动。 It’ an honor for me to be invited to the party. The books and mag azines aren’t allowed to be taken out of the reading room. I wanted the letter to be typed at once She asked to be assigned to do a heavy job. 4.如果逻辑主语没出现,只要意义是被动的,to do仍用被动。 It’s great honor to be elected a delegate to the Party. To be attacke d by the enemy isn’t a bad thing but a good thing. 5.to do中动词的省略,只保留to . (1)to do作某些动词的宾语时:当作宾语的不定式再次出现时,为避免重复,只留to. afford/ agree/ expect/ forget/ hate/ hope/ intend/ mean/ plan/ prefer/ refuse/ try/ want/ wish/ would like/ love/ care

动词不定式用法大全 英语动词的非谓语形式为三种:动词不定式、动名词和分词。非谓语动词没有人称和数的变化。 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。 To say is to believe.眼见为实。 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:(在形式上,位于系动词后的就是表语。从含义上讲,表语是回答主语“是什么”或“怎么样”的语法成分。) 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

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.

be+不定式的用法小结 be+不定式是英语中常见的一种结构,关于它的用法现在总结如下: 一、构成系表结构: 1、表示目的,例如: The prize was to honour him for his great discoveries. 这项奖励是为了对他的重大发现而表示的敬意。 2、对主语内容进行解释说明,例如: What you should do is (to) answer my questions. 你所应该做的就是回答我的问题。 二、表示将来: 1、表示按计划安排要发生的事情,例如: The president is to visit China next year. 总统将于明年访问中国。 If we are to be there in time, we'll have to hurry up. 如果我们想及时到达那里,就必须要赶快。 注:我们可以说:It's going to rain. 但不能说:It's to rain. 2、表示无法预见的结果或注定要发生的事情,例如: Better days are soon to follow. 好日子就要到了。 三、构成虚拟语气: 1、were to do 用于虚拟条件句中,表示对将来情况的虚拟。例如:What would you do if war were to break out? 假如战争爆发你会怎么做?

2、was/were+不定式的完成式(=should+不定式的完成式)表示过去应该发生而未发生的动作,例如:We were to have been married last year。 我们本打算去年结婚的。 四、be 后的个别动词不定式的主动形式表示被动意义,例如: It's Jim who is to blame. 该怪的是吉姆。 This house is to let. 此房出租。 五、其他用法: 1、表示命令,指令。例如: You are not to bring any mobile communication means into the exam-room. 任何移动通讯工具都不得带入考场。 2、表示必须,必要。例如: This letter is to be handed to him in person. 这封信必须要面交他本人。 3、表示能够或可能发生的事情,例如: How are we to convince him? 我们怎么能够说服他呢? 4、表示应该,例如: Such questions are to be avoided. 这样的问题应该避免。

动词不定式的基本用法 一、概述 动词不定式是一种非谓语动词形式,它能起名词、形容词和副词的作用,在句子中作主语、宾语、定语、表语、宾语补足语和状语。其形式如下:(主动形式) ◆一般式(not)to do 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。 He seems to know this. 我希望再见到你。_____________________________________________________ ◆完成式(not)to have done 完成时:表示的动作发生在谓语动词表示的动作之前。 He seems to have caught a cold. 很抱歉给你带来这么多的麻烦。____________________________________________ ◆进行式(not)to be doing 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 to be eating something. 他假装在学习。_______________________________________________________________ 二、动词不定式的语法功能 (一)作宾语 1) 动词+ 不定式 The driver failed to see the other car in time. 司机没能及时看见另一辆车。 我碰巧知道你那道问题的答案。 ____________________________________________________________________ ★常用的动词有afford, aim, appear, agree, arrange, ask, decide, bother, care, choose, come, dare, demand, desire, determine, expect, hope, fail, happen, help, learn, long(渴望), mean, manage, offer, ought, plan, prepare, pretend, promise, refuse, seem, tend, wish… 2)动词+疑问词+ to Please show us how to do that. 请演示给我们如何去做。

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.

英语动词不定式大全 动词不定式是一种活跃的非谓语动词。它在句中起的是名词。形容词或副词的作用,可在句子中作主语。宾语。定语。状语和宾语补足语。动词不定式的形式是"to +动词原形",但to有时要省去。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: 一。带to的不定式结构 1.我们学过的能直接跟带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。 2.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.。例如: Jim told me not to wake up Kate.吉姆告诉我别叫醒凯特。 二。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.。例如: 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。例如: 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。例如: Why not go with us。为什么不和我们一起去呢。 Why not take a holiday。=Why don't you take a holiday。为什么不休

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.

不定式作主语 1)It's easy (for me) to do that.我做这事太容易了 easy, difficult, hard, important, possible, impossible, comfortable, necessary, better; the first, the next, the last, the best, too much, too little, not enough It's so nice to hear your voice. 听到你的声音真高兴。 It's necessary for you to lock the car when you do not use it. 当你不用车的时候,锁车是有必要的。 2) It's very kind of you to help us. 他帮助我们,他真好。 Kind, nice, stupid, rude, clever, foolish, thoughtful, thoughtless, brave, considerate(考虑周到的), silly, selfish(自私的) 例句: It was silly of us to believe him. 我们真愚蠢,竟然相信了他。 It seemed selfish of him not to give them anything. 他不给他们任何东西,这显得太自私了。 注意:1) 其他系动词如,look,appear等也可用于此句型 2) 不定式作为句子成分时,动词用单数形式。 3) 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。

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 g ood 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,

英语动词不定式完成式在使用语境中的学习与考查 江苏省沛县湖西中学鹿俊先221611 综观近年的英语高考试题,我们可以看到题目的设置往往强调语言知识在特定语境中的使用,把语言知识放在了语用层面上,即考察实际应用知识的能力。 英语动词不定式的完成式,即(to) have +动词的过去分词形式,是中学英语学习中的重点及难点知识之一,也是高考试题中频繁出现的形式。对于这一形式考查的题目设置通常围绕三类语境,即陈述已经发生过了的事实,推测可能已经发生过了的事实,表达与过去实际情况相反的事实。下面分别加以叙述,以便从语用角度掌握这一语言知识。 1.陈述已经发生过了的事实。 1.1.置于表示情感反应的动词、形容词、分词之后,作为引起该反应的刺激,表示情感反应之前完成的动作。例如: I'm sorry to have given you so much trouble. (=I'm sorry that I gave / have given you so much trouble.) It is good to have finished work for the day. (=I am pleased because I have finished.) She said she was sorry to have missed you. (=She said she was sorry that he had missed you.) There was a smile on the boy's face, which seemed to show that he was happy to have given his life to his country. (=…he was happy that he had given his life to his country.) 1.2.置于be said, be considered, be believed, seem, appear, happen, turn out,等之后表示这些动作之前完成的动作。例如: I don't know whether you happen to have heard, but I am going to study in the U.S.A. this September. Charles Babbage is generally considered to have invented the first computer. (=It is generally considered that Charles Babbage invented the first computer.) He is said to have studied abroad, but I don't know which country he studied in. (= It is said that he studied abroad, b ut….) I appear to have made a small mistake. (=It appears that I made / have made a small mistake.) He seems to have missed the train. (=It seems that he missed the train.) 1.3.置于should之后,表达说话人对已发生了的事实的情感的反应,如惊奇、遗憾、喜悦、不安、失望,等,should相当于汉语中的“竟然”,“居然”。例如:They were surprised (that) a child should have worked out the problem while they themselves couldn't. It is strange that she should have married such an old man. 2.推测可能已经发生过了的事实。 2.1.置于must, will, would, can't, couldn't 之后,表示很有把握的推论。例如: The city must have been prosperous, for it enjoyed a high level of civilization. An ambulance is waiting in the street. Somebody must have been hurt or killed. --I met her soon after the war.

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)

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