动词不定式讲解与练习
小学英语动词不定式用法小结及练习
小学英语动词不定式用法小结及练习一、动词不定式的形式动词不定式是动词的一种形式，由“to+动词原形”构成。
例如：to study, to play, to eat等。
二、动词不定式的用法1. 用作动词的宾语：- I want to go to the park.（我想去公园。
）- She likes to play soccer.（她喜欢踢足球。
）2. 用作动词的主语：- To learn English is important.（研究英语很重要。
）- To eat fruits is good for your health.（吃水果对健康有益。
）3. 用作形容词的补语：- I am happy to help you.（我很高兴帮助你。
）- She is eager to learn new things.（她渴望研究新东西。
）4. 用作副词的补语：- He went to the zoo to see the animals.（他去动物园看动物。
）- She ran fast to catch the bus.（她跑得很快以赶上公交车。
）5. 用作名词的补语：6. 用作介词的宾语：- Are you ready to start the game?（你准备好开始比赛了吗？）- She is excited to go on a trip.（她很兴奋去旅行。
）练：1. 请将下列句子中的划线部分改为动词不定式形式：- I like swimming in the pool. → I like to swim in the pool.- They want playing soccer. → They want to play soccer.2. 请填入适当的动词不定式形式：- My dream __________ (be) a teacher.- He needs __________ (study) harder for the exam.3. 请根据句意选择动词不定式的正确形式填空：- She decided ______ (go) to the movie with her friends. 以上是动词不定式的用法小结及相关练。
高中语法非谓语动词之动词不定式讲解及练习
(7)动词不定式作独立成分 这些短语有： to begin with, to tell the truth,to make a long story short,so to speak,to be brief,to be frank,to conclude. 例：To begin with,I'like to introduce myself to you all.
2)在too...to结构中，后面的形容词是为 ready,eager,anxious,apt,willing,glad, pleased等词时，动词不定式不再有否定的意思。 too在此处可以理解成very的意思。 例：She is too ready to help. 她极其乐于帮助别人
原因状语： 动词不定式常跟在一些形容词后，说明产生这些情 绪的原因。这类形容词有： happy,surprised,sorry,glad,eager等 例：I am sorry to interrupt you.
2)be to 含有按计划，按命令做的事情或应该、可能、 注定发生的事情
例：We are to meet once a week. 我们按计划将一个月碰一次头。 What is to be done?应该怎么办？ The key is nowhere to be found.可能
(4)动词不定式作宾语补足语或在被动语态中作主语补 足语 例：We'd love you to give us a hand. He was made to repair the broken chair. ※ 注意： 1）在一些动词后，作宾语补足语的动词不定式to要省 略掉。这类动词包括感官动词和使役动词。如： see,hear,watch,have,make,let等。但如果句子是被动语 态，动词不定式为主补时，要带to（let 除外） I heard her sing a song in the next room yesterday.
动词不定式的用法与练习
动词不定式的用法与练习动词不定式是英语中的一种非限定性动词形式，通常由"to"加上动词的原形构成。
不定式可以具有名词、形容词或副词的功能，在句子中起到不同的作用。
本文将介绍动词不定式的基本用法，并提供一些练习帮助读者巩固所学知识。
一、动词不定式作主语动词不定式可以在句子中作主语，常见句型为：To study is important for success.解析：动词不定式"To study"作主语，表示“学习”在成功中的重要性。
二、动词不定式作宾语动词不定式可以在句子中作宾语，常见句型为：I want to learn French.解析：动词不定式"to learn"作宾语，表示“学习法语”的愿望。
三、动词不定式用于形容词后动词不定式可以用于形容词的后面，修饰名词或代词，常见句型为：I am happy to help you.解析：动词不定式"to help"用于形容词"happy"后，表示“乐意帮助你”。
四、动词不定式用于副词后动词不定式也可以用于副词的后面，修饰动词或整个句子，常见句型为：She went to the park to enjoy the sunshine.解析：动词不定式"to enjoy"用于副词"to the park"后，表示“去公园享受阳光”。
五、动词不定式用于介词后动词不定式还可以用于介词的后面，常见句型为：He is good at playing basketball.解析：动词不定式"playing"用于介词"at"后，表示“擅长打篮球”。
六、动词不定式作状语动词不定式可以作为状语，用于修饰动词、形容词或整个句子，常见句型为：She works hard to achieve her goals.解析：动词不定式"to achieve"作状语，修饰动词"works hard"，表示“努力工作以达成她的目标”。
(经典)动词不定式的精讲与专项练习
动词不定式（The Infinitive）二、不定式的主要用法动词不等式具有名词、形容词及副词的特征，因此在句中可作主语、宾语、宾语（或主语）补足语、表语、定语、及状语等。
1、不定式作主语①不等式作主语时，谓语动词用单数形式。
To conquer English is not easy. 征服英语不容易。
To make plan firs t is a good idea. 先制定计划是个好主意。
To know everything is to know nothing. 事事皆通，无一精通。
②不等式作主语时，常常用形式主语it替代，而将真正的主语不等式放在句子的后面。
It is necessary to master a foreign language.掌握一门外语很有必要。
It’s a great pleasure to see you again.再次见到你真高兴。
It is a bad manner to stare at a foreign guest.盯着外宾看是一种不良的举动。
③如果说明不等式表示的动作是谁做的，可以在不等式的前面加一个for引起的短语，这就是常见的“It is adj./n. for sb. to do sth.”句式。
如：It is good manners for an Arab to stand close to his friends when they are talking.对阿拉伯人来说，交谈时站得离朋友近些是好的礼貌。
It is a great honor for us to be presented at the party.我们能来参加晚会，深感荣幸。
It will be a regret for us not to help him. 我们没有帮助他是个遗憾。
④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，不等式前常加一个以of引起的短语，来说明不等式指的是谁的情况。
人教版英语八年级上册动词不定式讲解,专项练习(附答案)
初中英语语法（动词不定式）1．不定式的基本形式与结构动词不定式指通常由to加上动词原形(如to write) 所构成的一种非限定性动词形式，但在有些情况下to可以省略。
动词不定式有进行体和完成体(如上to be writing，to have written)，也有被动态(如to be written)，所有的主动词，不论是及物动词还是不及物动词，也不论是动作动词还是状态动词，都有不定式形式。
助动词除be和have外，没有不定式形式。
动词不定式在语法功能上可作主语、宾语、表语、定语和状语。
2．不定式的用法1)不定式结构作主语1.Te get contact with his family in Taiwan made him extremely happy since they separated more than 40 years ago．2.To finish that task in such a short time is really a challenge．在上述情况下，如果不定式较长，显得头重脚轻，则可由代词让作形式主语(形式主语it不可由that或this等其他代词代替)，而将不定式放到后面。
如：1.It made him extremely happy to get contact with his family in Taiwan since they separated more than 40 years ago．2.John admitted that it is always difficult for him to be on time．不定式结构所表示的动作是谁做的，即不定式的逻辑主语，通常可以通过for sb. to do sth. 结构表达：1.It is quite important for us to read good books during a general review．2.It is not difficult fot those talented students to pass the exam.在某些形容词(如careless，clever，considerate，foolish，good，impolite，kind，naughty，nice，silly，stupid等)作表语时，不定式后可以加of来引导出其逻辑主语：1.It is very kind of you to tell me the truth．2.It is stupid of him to do such a silly thing．2)不定式作宾语不定式作宾语有两种：一种是及物动词后直接跟带to的不定式，另一种是“及物动词+疑问词+带to的不定式。
动词不定式讲解与练习
动词不定式讲解与练习动词不定式讲与练动词不定式在句中可充当主语、表语、宾语、宾补、定语和状语等。
一、作主语动词不定式作主语可位于句首。
例如：To learn a skill is very important for everyone in today's society.也可使用it作形式主语，而将其置于句末。
例如：It is necessary for young students to learn a foreign language.动词不定式作主语的常用句型有：1. It is＋adj./ n. (＋for sb.／sth.) ＋to do sth.用于此句型的形容词有：easy, hard, difficult, possible, important, impossible, necessary, good, bad, exciting, interesting, surprising等。
例如：It is interesting to play this game.It is necessary for you to change your job.It was impossible for them to complete the task in such a short time.考例1：Is ____ possible to fly to the moon in a spaceship?A. nowB. manC. thatD. it用于此句型的名词有：pity, shame, pleasure, one’s duty, one’s job, fun, joy, good manners, bad manners等。
例如：What a pity it is for you to have missed such a wonderful film.It is good manners for the young to give their seats to the old.2. It is＋adj.＋of sb.＋to do sth.该句型中只能使用描述某人的品德、特征的形容词，如： kind, nice, wise, silly, polite, impolite, friendly, foolish, clever等。
动词不定式讲解,专项练习及答案
初中英语语法（动词不定式）1．不定式的基本形式与结构动词不定式指通常由to加上动词原形(如to write) 所构成的一种非限定性动词形式，但在有些情况下to能够省略。
动词不定式有实行体和完成体(如上to be writing，to have written)，也有被动态(如to be written)，所有的主动词，不管是及物动词还是不及物动词，也不管是动作动词还是状态动词，都有不定式形式。
助动词除be和have外，没有不定式形式。
动词不定式在语法功能上可作主语、宾语、表语、定语和状语。
2．不定式的用法1)不定式结构作主语1.Te get contact with his family in Taiwan made him extremely happy since they separated more than 40 years ago．2.To finish that task in such a short time is really a challenge．在上述情况下，假如不定式较长，显得头重脚轻，则可由代词让作形式主语(形式主语it不可由that或this等其他代词代替)，而将不定式放到后面。
如：1.It made him extremely happy to get contact with his family in Taiwan since they separated more than 40 years ago．2.John admitted that it is always difficult for him to be on time．不定式结构所表示的动作是谁做的，即不定式的逻辑主语，通常能够通过for sb. to do sth. 结构表达：1.It is quite important for us to read good books during a general review．2.It is not difficult fot those talented students to pass the exam.在某些形容词(如careless，clever，considerate，foolish，good，impolite，kind，naughty，nice，silly，stupid等)作表语时，不定式后能够加of来引导出其逻辑主语：1.It is very kind of you to tell me the truth．2.It is stupid of him to do such a silly thing．2)不定式作宾语不定式作宾语有两种：一种是及物动词后直接跟带to的不定式，另一种是“及物动词+疑问词+带to的不定式。
初中英语动词不定式练习题及解析
初中英语动词不定式练习题及解析1. 阅读理解> Passage:Passage:>c) to joind) joininge) to improvef) improveg) to achieveh) achieving解析：- 第二空应选 c) to join。
根据句子结构“He hopes + tojoin/joining” 可知应选 c) to join。
to join 是不定式形式，表示希望加入某个篮球队。
- 第三空应选 e) to improve。
根据句子结构“always encourage + to improve/improve” 可知应选 e) to improve。
to improve 是不定式形式，表示鼓励提高某人的技能。
- 第四空应选 g) to achieve。
根据句子结构“help him + to achieve/achieving” 可知应选 g) to achieve。
to achieve 是不定式形式，表示帮助实现某人的目标。
2. 句子转换Change the sentences below by rewriting the underlined phrases using the verb in brackets:> Example:Example:>> Tom wants to visit his grandparents. (see)>> Tom wants [to see] his grandparents.b) We plan to go camping next weekend. (do)c) He hopes to find a new job after graduation. (get)d) They decided to buy a new car for their family. (purchase) 解析：b) We plan [to do] camping next weekend.c) He hopes [to get] a new job after graduation.d) They decided [to purchase] a new car for their family.3. 完形填空> Passage:Passage:>a) to joinb) joiningc) to tryd) tryinge) aref) is解析：- 第一空应选 a) to join。
高中英语语法讲义：动词不定式考点详析与练习
动词不定式由“to + 动词原形”构成，可以在句子中充当除谓语之外的任何成分。动词 不定式具有动词的性质，可以带宾语和状语，且有完成式、完成进行式、进行式、被动式 和否定形式等变化。
考点详析 一、 不定式的基本形式 由“to + 动词原形”构成;其否定形式是“not to + 动词原形”，若加强语气可用“never to + 动词原形”。 She promised never to tell a lie again. 她承诺再也不撒谎了。 二、 不定式的时态和语态 不定式一般有时态和语态的变化，通常有下表中的几种形式（下面以 do 为例）： 1. 不定式的时态 （1） 不定式所表达的动作与谓语动词同时发生或在谓语动词之后發生时，不定式用 一般式。 They planned to employ some skilled workers. 他们打算雇几个有技术的工人。 （2） 不定式所表达的动作与谓语动词同时发生，并强调动作正在进行或一直在持续， 不定式用进行式。 He pretended to be reading when I came in. 当我进来的时候，他假装在看书。 （3） 不定式的动作发生在谓语动词表示的动作之前，不定式用完成式。 The disabled man is said to have translated several novels into French. 据说这个残 疾人已将几本小说翻译成法语。 （4） 如果强调不定式所表示的动作从过去某一时刻起一直持续到某一时刻，不定式 用完成进行式，此时，强调动作的持续性，不强调结果。 She seems to have been reading the novel for three hours. 好像她已经看了 3 个小时 的小说了。 2. 不定式的语态
最新人教版八年级下册英语考点动词不定式讲解及练习有答案)
动词不定式一、动词不定式在句子中不能充当谓语，没有人称和数的变化。
二、动词不定式是由“to+动词原形”构成(有时可以不带to)。
动词不定式的否定形式是“not+动词不定式”(not不与助动词连用)。
三、动词不定式短语具有名词、形容词和副词等的功能，可在句中用做多种句子成分。
1、主语：常置于句末，而用it代替其做形式主语。
To go in for sports helps you stay fit.It is dangerous to swim in the deep sea on your own.注：此句式中不定式逻辑上的主语可由for或of引出，逻辑主语由of引出时，表语的形容词为kind, nice, good, polite, clever, foolish, right, wrong等表示评价的形容词。
例：It’s right of him to refuse the invitation. (him为逻辑主语)2、表语：Our duty is to protect the environment.3、动词宾语：此种情况可按固定搭配或句式去记。
例：Would you like to see my photos?Kevin planned to visit his uncle.和plan用法一样的词还有：start, want, agree, hope, begin,decide等。
I found it very difficult to get a job. (it为形式宾语)4、宾语补足语：(1) 在多数复合宾语及物动词后要带to。
例：I asked a friend to read it to me. (book4，L2)(2) 在表示感觉、致使等意义的动词(see, watch, hear, feel, notice, observe, make, let, have, help等) 后不带to。
动词不定式讲解及练习
第一讲动词不定式+综合练习一、目标展示。
仔细观察下列句子，注意划线部分的用法。
1. Sally never forgets to do her homework.2. I agreed to go with them.3. We decided to go out for dinner.4. I hope to study music in France.5. We plan to visit her tomorrow.二、结构肯定形式to do否定形式not to do三、用法1. 作主语eg: To play on the street is very dangerous for children.注意：(1) 为了避免头重脚轻，通常都将作主语的动词不定式置于句子后面，而在句首的主语位置使用形式主语itTo play on the street is very dangerous for children.= It is very dangerous for children to play on the street.(2) 常见的it 作形式主语，动词不定式作真正主语的句式有：A. It is +adj+for/of sb to do sth.eg. It is kind of you to help me.B. It takes/took sb. +时间/金钱+ to do stheg. It takes me an hour to finish my homework.2. 作表语eg. He seems to be very rich.3. 作宾语eg. She likes to talk about it.注意：it 也可作形式宾语，而把真正作宾语的动词不定式放在后面,主要句式有：make / find / think + it +adj.+ to do sth.eg: I find it hard to learn a foreign language well.4. 作定语当名词或代词前有序数词、the only、the last 等修饰时，名词后面要用to do做定语eg. He is always the first student to go to school.▲四．常见直接接不定式to do 作宾语的动词afford 负担得起agree 同意decide 决定hope 希望learn 学习promise 答应offer 主动提出plan 计划prepare 准备refuse 拒绝want 想要would like 想要，愿意eg. I would like to have a cup of coffee.I hope to meet you tomorrow.▲五．常见构成“动词+宾语+不定式to do”结构的动词advise 建议allow 允许ask 请求tell 告诉encourage 鼓励invite 邀请order 命令teach 教warn 警告eg. The teacher told the students to keep quiet.He asked me to wait for him at the gate.▲★六．特殊情况1. 使役动词后省to 的情况：在主动语态中，let/make/have 等使役动词后用作宾语补足语的不定式必须省略to；eg. He made me do a lot of homework.2. 感观动词后省to 的情况：在see, hear, notice 等词后用作宾语补足语的不定式须省略to；eg. I saw him enter the hospital.拓展：see/hear/notice + sb. + doing 表示“看到、听到某人正在做某事”eg. I saw him playing basketball on the playground just now.3. 动词help 后既可接to do 也可接do；eg. Can you help me (to) clean the room?4. You’d better 后接不带to 的不定式；eg. You’d better do your homework first.5. 特殊疑问词+ to do【课堂练习】一、用所给动词的适当形式填空。
动词不定式讲解及练习
8. 与疑问词等连用
三. 用法/ 功能
(1). 主语
To see is to believe. It’s important to learn English well . •单个不定式作主语时,谓语动词用单数 •若不定式太长,往往用it作形式主语,不定式置后.
(2). 表语
My job is to help the patient. Your task is to clean the classroom.
二听
一感觉:feel
hear
注意 1> help 后面的“to”可省去
e.g. They often help the grandma (to) carry water.
2> see, hear, watch, feel, notice, look at等表示 感觉和let, make, have等表示使役的动词后 面，不定式作宾语时要省“to” （注：被动 语态不省to） e.g. I made him do his work. He was made to do his work (by me).
3> 不定式用在介词but, except, besides 后时,如果这些介词前有行为动词do的 各种形式,那么介词后的不定式不带to, 相反则带to.
(1). She could do nothing but cry. (2). I have no choice but to go. (3).What do you like to do besides sleep.
2. 作定语的不定式如果是不及物动词，或 者不定式所修饰的名词或代词是不定式动 作的地点工具等，不定式后面须有相应的 介词。
e.g. He is looking for a room to live in. 他在找一个房间住。 3. 不定式所修饰的名词如果是time, place或way， 不定式后面的介词习惯上要省去。 e.g. He had no money and no place to live. 他没钱没地方住。
动词不定式用法与专项练习
动词不定式: to+do 或do动词不定式由to + 动词原形组成，是动词的一种非谓语形式。
它可以带宾语，构成动词不定式短语，在句子中起名词、形容词和副词的作用，因此在句中可充当谓语以外的任何成分，即主语、表语、宾语、定语、状语、宾补、主补和同谓语。
1. 动词不定在句中的语法功能(1)动词不定式（短语）作主语To love is to be loved. 爱别人就是被人爱。
To teach is to give. 教书就是奉献。
注意：1）在口语中，动词不定式作主语时常用形式主语it，而真正的主语则被置于句子后部。
It always pays to be honest. 老实不吃亏。
It is of great importance to solve the housing problem. 解决住房问题是很重要的。
It will take me three hours to do this job. 干这个工作我花了三个小时。
2）假如动词不定式要带逻辑主语，则需用介词of 或for来引导。
It's good for me to have a talk with you. 我很高兴和你交谈。
It is really important for students to learn English well. 对学生们来说，学好英语很重要。
It is possible for all nations to unite to get rid of the terrorists. 所有国家携手铲除恐怖分子，这是可以做到的。
It is stupid of John to help such a shameless girl. 约翰真傻，竟去帮助这样一个无耻的女孩。
It is cruel of man to kill animals in such a casual manner. 人类如此随便地屠杀动物，真是残忍。
动词不定式(专项练习)(解析版)
动词不定式(专项练习)(解析版)动词不定式(专项练习)(解析版)动词不定式是英语语法中的一个重要部分，它对于理解句子结构和语法的正确使用起着关键作用。
本文将为您提供一些动词不定式的专项练习，通过对这些练习的解析，帮助您更好地掌握动词不定式的使用方法。
一、填空练习1. Peter asked me ________ him the book.答案：to lend解析：这是一个带有宾语的动词不定式结构。
动词ask后接不定式to lend，表示被询问的动作。
2. I enjoy ________ to music in my spare time.答案：listening解析：enjoy后接动词的-ing形式构成动词不定式结构，表示喜欢做某事。
3. My brother promised ________ me with my homework.答案：to help解析：promise后接不定式to help，表示允诺要做某事。
4. He needs ________ a new laptop for his work.答案：to buy解析：need后接不定式to buy，表示需要做某事。
5. We decided ________ the party at the park.答案：to have解析：decide后接不定式to have，表示决定要做某事。
二、句型转换1. He wants to become a doctor in the future.改为否定句：He doesn't want to become a doctor in the future.解析：使用情态动词do的否定形式来构成否定句。
2. She can speak three languages fluently.改为一般疑问句：Can she speak three languages fluently?解析：将助动词can提到句首构成一般疑问句。
中考英语动词不定式及其用法讲解+练习
中考英语动词不定式及其用法讲解+练习1.动词不定式的基本概念：动词不定式的基本形式是“to+动词原形”，有时可以不带to。
动词不定式没有人称和数的变化，在句中不能做谓语，但可以有自己的宾语和状语。
动词不定式跟它的宾语和状语构成了不定式短语，例如：to read the book, to speak at the meeting等。
2.动词不定式的用法：动词不定式具有名词，形容词和副词的特性，因此可在句中作主语，表语，宾语，宾语补足语，状语和定语。
句子用法：作主语：eg:1)To take part in sports is important.2)To see is to believe.动词不定式做主语时常常由it来代替它，做形式主语，而动词不定式放在句末。
eg: It’s great to see you again.It is important to learn English well.It was rewarding to take part in this exchange programmeIt will take us a month to go on study trip to New York.It is necessary for governments to control the population growth.做表语：eg：The best way is to pratice.My dream is either to be a diplomat or to be a teacher of English .A popular use of the computer is to send a e-mail.Her wish is to become a famous star.The best way is to read the play before you see it.做宾语：eg: We are talking about how to solve the problem.I think it not difficult to keep reading English every morning.做宾补：eg: We all expect him to win the contest.Our teacher told us to listen carefully in class.注意：感官动词，或使役动词+宾语+无to的不定式Is Jack in the library ?Maybe I saw him go out with some books just now.Let those in need understand that we will go all out to help them.做定语：Liu Yang is the Chinese woman astronaut to enter the space.You are the last one to win the price.In the future , human will have less work to do.Why don’t you go out to play Rose?I’m afraid I can’t . I have a lot of homework to do.做状语：动词不定式做状语可以修饰动词，一般在句中做原因，目的和结果状语，动词不定式做状语可单独放在句首，句中或句末。
中考英语总复习之动词不定式-详解与练习
概念:动词不定式由to+动词原形构成。
这里的to是不定式标志,没有词义。
不定式具有名词、形容词或副词的某些语法功能,又有动词的时态和语态的特点及作用。
可以做主语、宾语、宾语补足语、表语、定语、状语。
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 doIt's our duty to take good care of the old.②It takes sb+some time+to doHow long did it take you to finish the work?③It＋be＋形容词＋b＋to doIt is difficult for us to finish for swriting the composition in aquarter of an hour。
在句型③中,常用表示客观情况的形容词,如：easy，difficult，hard,important，possible，impossible，comfortable，necessary,better; the first，the next,the last,the best,too much，too little，not enough④It＋be＋形容词＋of sb＋to doIt is stupid of you to write down everything the teacher says.在句型④中,常用careless,clever，good,foolish,honest，kind，lazy，nice,right,silly,stupid,wise rude，clever,foolish，thoughtful, thoughtless（欠考虑的；不考虑的）,brave,considerate(考虑周到的)，selfish（自私的）等表示赞扬或批评的词。
(完整版)高中动词不定式用法讲解和练习
Grammar Presentation---动词不定式一、不定式的句法功能●不定式作主语➢To learn a foreign language is not easy.学习外语不是一件容易的事。
◎不定式短语作主语时，常用it作形式主语来代替它的位置，而将真正的主语（不定式短语）移到谓语之后➢It’s a great honor to be invited to Mary’s birthday party.很荣幸被邀请参加玛丽的生日聚会。
●不定式作宾语◎作动词宾语◇下列动词常接不定式作宾语，如：agree, arrange, ask, beg, choose, dare, decide, demand,expect, fail, fear, hope, manage, offer, plan, prepare, pretend, promise, ➢They hope to find new resources for mankind.他们希望为人类找到新资源。
◇如果不定式作宾语且有自己的补语，常用“it”作形式宾语，而把真正的宾语放在后面。
下列动词常用it作形式宾语，如：believe, consider, feel, find, know, make ➢I know it impossible to finish so much homework in one day.我知道在一天中完成这么多的作业是不可能的。
●不定式作表语◎不定式作表语时，一般紧跟在系动词后，说明主语的内容➢The first step is to check the victim’s breathing.第一步是检查受害人的呼吸。
●不定式作补语➢I’d like the problem to be discussed at the next meeting.我希望这个问题在下一次会上讨论。
●不定式作定语➢The students have a lot of homework to do every day.学生们每天都有很多家庭作业要做。
高中英语 动词不定式专项讲解及训练(有答案)
动词不定式专项训练A. to solveB. to be solveC. being solvedD. solvingA. for her to returnB. that she must returnC. her returningD. of him to returnA. costs... to getB. costs... gettingC. takes... to getD. takes... gettingA. to explainB. to have been explainedC. to be explainedD. to be explainingA. to learnB. to be learningC. to have learnedD. to have been learningKeys: 1-5 A A C C C专项练习1.The flu is believed_______ by viruses that like to reproduce in the cells inside the human nose and throat.A. causingB. being causedC. to be causedD. to have been caused2.There is a new problem involved in the popularity of private cars road conditions needA. that. .. to be improvedB. which ... to be improvedC. where. . . to be improvingD. when.. . improving3.Remember_________the magazine when you have finished reading it.A. putting backB. having put backC. to put backD. will put back4.—I'm sorry I forgot________ your dictionary.—Let's use Li Hua's.A. to takeB. takingC. to bringD. bringingA. to do whatB. what to doC. doing whatD. what doingA. writing... phoningB. to write. . . to phoneC. writing... to phoneD. to write. . . phoning7.Tom is always forgetting things he has done. Yesterday, he forgot and looked for it eve-rywhere.A. to post the letterB. to have the letter postedC. to having posted the letterD. having posted the letterA. to be notB. not to beC. not beingD. being not9.My brother regretted _______ a lecture given by Prof. Wang.A. missingB. to missC. missedD. being missing10.I regret _______ you that we are unable to offer you a job.A. informingB. having informedC. to informD. to informing11.He felt tired with typing the lecture. So he stopped_______ a short break.A. havingB. to haveC. takingD. to taking12.In order to gain a bigger share in the international market, many state-run companies arestriving their products more competitive.A. to makeB. makingC. to have madeD. having madeA. to sit... weptB. to sit. .. weepingC. sit... weptD. sat. . . weeping14.—You have come just in time tohelp us.—Fine. What needs________________________?A. I doB. doneC. to be doneD. to do15.That evening, he set about_________ t he report_______ the next morning.A. write... to hand inB. to write.. . handing inC. written... to hand inD. writing... to be handed in16.There seemed nothing ________ to do but ________ f or the doctor.A. leave... sendB. left... to sendC. left... sendD. leaving... send17.Do you think it difficult________ a dolphin ________ ?A. to train... jumpingB. training... for jumpingC. to train... jumpD. to train... to jump18.I prefer _______ rather than_______ .A. to do some reading... watching TVB. doing some reading... watching TVC. to do some reading... watch TVD. doing some reading... to watch TV19.The two boys pretended _________ v ery hard, though they did nothing.A. studyB. studyingC. to be studiedD. to be studying Keys: 1-5 CACCB6-10 CDBAC 11-15 BAB CD 16-19CDCD专项练习1.An army spokesman stressed that all the soldiers had been ordered clear warnings before firing any shots.A. to issueB. being issuedC. to have issuedD. to beissuedA. practise to singB. practise singingC. to practise to singD. to practise singing3.—What can we do to help Li Ming?A. making him to realizeB. making him realizeC. to make him realizeD. to make him to realizeA. disappearB. to disappearC. disappearingD. disappearedA. to writeB. writtenC. writeD. writingA. madeB. to makeC. makingD. to be makingA. saysB. sayingC. sayD. saidA. give upB. giving upC. to give upD. to giving upA. to commentB. commentC. to commentingD. being commentedA. reciteB. recitedC. recitingD. to reciteA. repeat the question againB. repeating the questionC. to repeating the questionD. to repeat the questionA. to be destroyedB. to have been destroyedC. to be destroyingD. to have been destroyingA. to go alongB. going alongC. went alongD. will goalongA. to get it to startB. get it startD. getting it startedC. to get it startedA. to sweepB. to be sweptC. should sweepD. being swept Keys:1-5 ADC AC6-10 CCCBA 11-15 DBACB1.—I'd like to buy a car made in Shanghai.—Okay, Sir. You have several models ________ .A. to chooseB. to be chosen fromC. to choose fromD. for choosing2.It's time________ rice.A. for transplantB. of transplantingC. to transplantD. to transplanting3.It is a very difficult problem. I need a few days_________ .A. of thinking over itB. to think it overC. of thinking it overD. to think over it4.People need homes _______ and food ________ .A. to live... to eatB. to live in... to eatC. live. . . to eatD. to live in... to eat for5.Columbus was the first _________ t he New Continent.A. to have discoveredB. to discoverC. discoveringD. having discovered Keys:1-5 CCBBB专项练习A. for the family to liveB. for the family to live inC. that the family can't live inD. that the family can't liveA. so everyone to understandB. for every one understoodC. for everyone to understandD. for understandingA. to get along withB. to get alongC. to be got along withD. to getting along withA. for us in followingB. for us to be followedC. to be followedD. for us to followA. to drink itB. to be drunkC. to drinkD. to be drinkingA. to seeB. for to seeC. for seeingD. seeing7. _______ , I don't want to argue with them about the matter.A. To tell you the truthB. Telling the truthC. Having told you the truthD. Out of the truthA. to not frightenB. so as not to frightenC. in order to not frightenD. for not frighteningA. showing me the wayB. as to show me the wayC. to show me the wayD. so you can show me the wayA. to leaveB. that he leavesC. as to leaveD. leavingKeys:1-5 BCADC6-10 AABCC专项练习vi. 不定式的时态与语态意义1. 不定式的时态意义1)一般式：不定式的动作与谓语动词的动作同时发生或是在其后发生。
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动词不定式讲与练动词不定式在句中可充当主语、表语、宾语、宾补、定语和状语等。
一、作主语动词不定式作主语可位于句首。
例如：To learn a skill is very important for everyone in today's society.也可使用it作形式主语，而将其置于句末。
例如：It is necessary for young students to learn a foreign language. 动词不定式作主语的常用句型有：1. It is＋adj./ n. (＋for sb.／sth.) ＋to do sth.用于此句型的形容词有：easy, hard, difficult, possible, important, impossible, necessary, good, bad, exciting, interesting, surprising等。
例如：It is interesting to play this game.It is necessary for you to change your job.It was impossible for them to complete the task in such a short time.考例1：Is ____ possible to fly to the moon in a spaceship?A. nowB. manC. thatD. it用于此句型的名词有：pity, shame, pleasure, one’s duty, one’s job, fun, joy, good manners, bad manners 等。
例如：What a pity it is for you to have missed such a wonderful film.It is good manners for the young to give their seats to the old.2. It is＋adj.＋of sb.＋to do sth.该句型中只能使用描述某人的品德、特征的形容词，如： kind, nice, wise, silly, polite, impolite, friendly, foolish, clever等。
例如：How rude it was of the boy to jump the queue!It is friendly of the family to try to make me feel at home in their house.How silly it was of you to give up such a good chance!3. It takes sb.＋some time＋to do sth. 该句型意为“做某事花费某人多长时间”。
例如：It took us half an hour to ride to the town by bike.二、作表语动词不定式作表语常用于以下结构：My wish/ job/ aim/ goal is…及The next step/ measure is …等。
例如：Your job is to type the papers in the office. The next measure is to stop the river from being polluted.三、作宾语常见的只能使用动词不定式作宾语的动词有：agree, choose, decide, hope, fail, wish, refuse, expect, manage, plan, intend, pretend, promise, offer, afford, demand, arrange等。
例如：They decided to build a highway between these two cities.She offered to help me when I was in trouble.believe, think, consider, feel, make等动词可用于“动词+ it +adj. / n+to do sth.”句型，其中使用it作形式宾语，而将真正的宾语动词不定式置于句末。
例如：I think it necessary for us to have a good rest after the long work.She felt it her duty to help the old woman.四、作宾补可后接动词不定式作宾补的动词有：advise, allow, ask, hear, order, see, tell, want, wish, watch等。
例如：The doctor advised her no to eat too much sugar. I wish you to go to the meeting with me.believe, consider, count, declare, deny, feel, find, guess, imagine, judge, know, prove, realize, suppose, think等动词后可接to be型不定式作宾补。
例如：He declared himself to be a college student. 他自称是名大学生。
The police proved him to be a thief. 警察局证实他是小偷。
hope, demand, suggest等动词不能后接动词不定式作宾补。
例如：【误】I hope my son to be back soon.【正】I hope my son will be back soon.【误】She suggests us to have a discussion about it.【正】She advises us to have a discussion about it.【正】She suggests that we (should) have a discussion about it.在主动结构中，下列动词后作宾补的动词不定式应省略to：“五看”(see, watch, notice, observe, look at)“三使”(make, let,have)“两听”(hear, listen to)“一感觉”(feel)。
例如：Who made him work all night long?但是，改为被动结构后，应补出省略的to。
例如：He was seen to break the window.五、作定语动词不定式作定语，应位于所修饰词语之后，即：作后置定语。
例如：Have you got anything to eat? (to eat修饰anything，位于其后)下列名词后常接动词不定式作定语：ability, attempt, chance, courage, decision, effort, failure, promise, way, wish等。
例如：But she gave up the chance to go abroad.由only, first, last, next以及序数词或形容词最高级修饰的名词后，也常接不定式作定语。
例如：Who was the last one to leave the classroom last night?六、作状语动词不定式作状语，可表示目的、原因、结果或条件。
例如：We went there to see our grandparents.（目的）I am very sorry to hear that.（原因）She hurried home only to find her father dead.（结果）To look at the picture, you would like it.（条件）作目的状语，还可以使用in order to或so as to。
例如：The boy worked so hard in order to make up for the lost time.结果状语还可以使用enough to, too…to…, so…as to, such… as to等结构。
例如：He got up too late to miss the early bus.She was in such a hurry as not to notice me. 她如此匆忙，以致没有注意到我。
动词不定式的用法1. 不定式的构成不定式是由不定式符号to+动词原形构成，在某些情况下to也可省略。
不定式一般有时式和语态的变化，通常有下表中的几种形式（以do为例）：一般式to do 被动式to be done 完成式to have done 完成被动式to have been done进行式to be doing 完成进行式to have been doing 其否定形式是由not加不定式构成。
如：His works are said to have been translated into many languages.据说他的作品被译成了多种文字。
He pretended to be reading when his mother came in. 当他母亲进来时，他假装在看书。
His sister told him not to read in the sun. 他的姐姐让他不要在阳光下看书。
Mother made him get up early yesterday. 昨天母亲让他起得很早。
2. 不定式各种形式的用法动词不定式的一般式表示要做的事，当主语或被修饰词是不定式的动词的动作承受者时，不定式常用被动式；如果其动作发生的时间早于谓语动词所发生的时间，这时不定式就常用完成式；这时，如果主语或被修饰词是不定式动词所表示动作的承受者，则不定式用完成被动式；如果不定式表示一个正在发生的动作，则用进行式。
如：He seems to be writing an article. But I don’t know what it is about.他似乎在写一篇文章。
但是我不知道是关于什么的。
His works are said to have been translated into many languages.据说他的作品被译成了多种文字。