动词不定式(基础讲解)
动词不定式
【概念引入】
1. 动词不定式名言：
（1）动词不定式作表语
To lose is to learn. 失败就是学习。
（2）动词不定式作主语
It is better to give than to take. 给予比接受更好。
（3）不定式作宾语
Expect to be treated as you have treated others.
你怎样待别人，就指望别人怎样待你。
（4）不定式作宾补
Adversity causes some men to break，others to break records.
逆境使一些人崩溃，也使一些人破记录。
（5）不定式作定语
There is a time to talk and a time to act.
该说的时候说，该做的时候做。
（6）不定式作目的状语
To find the exact answer，one must first ask the exact question.
要找到确切的答案，首先必须提出确切的问题。
2. 动词不定式定义：
动词不定式是一种非谓语形式（不能作谓语），基本形式是to do形式(to是不定式符号的标志，无意义，可以不翻译)
肯定式：to + 动词原形
否定式：not to + 动词原形
【用法讲解】
1.动词不定式的特征
动词不定动式是一种非谓语动词形式，它没有人称和数的变化，在句子中不能作谓语，但可以作除谓语之外的其它任何句子成分（主语、表语、宾语、宾语补足语、定语和状语）；动词不定式具有名词、形容词和副词的特征，同时还保持动词的某些特点，既可以有自己的宾语和状语，动词不定式和它的宾语和状语构成不定式短语。
2. 动词不定式在句子中的作用
动词不定式是由to+动词原形构成，在句中起名词，形容词和副词的作用，可以担任除谓语以外的其它任何成分。
（1）动词不定式作主语。例如：
To master a language is not an easy thing.
掌握一门语言不是一件容易的事情。
To teach English is my favorite. 教英语是我的爱好。
It's my pleasure to help you. 很乐意帮助你。
（2）动词不定式作宾语。
某些及物动词可以用动词不定式作宾语，这些动词有decide, begin, help, want, wish, like, forget, learn, ask等。例如：
I like to help others if I can. 如果有可能的话，我喜欢帮助别人。
I want to buy a new car when I have enough money.
我有钱时想买一辆新车。
（3）动词不定式作宾语补足语。例如：
We expect you to be with us. 我们希望你和我们在一起。
Please ask him to come here quickly. 请叫他快过来。
（4）动词不定式作表语。例如：
What I should do is to finish the task soon.
我应该做的是赶快完成任务。
The most urgent thing is to find the boy immediately.
当务之急是马上去找孩子。
（5）动词不定式作定语。例如：
There are many ways to solve the problem.
有许多方法能解决这个问题。
I have something important to tell you.
我有重要的事情要告诉你。
（6）不定式作状语。例如：
We went to the hospital to see our teacher.
我们去医院看了我们的老师。
She is making a test to get a kind of useful medicine from a Tibet flower.
她在做试验，从一种西藏花中提取某种有用的药物
3.不定式后接特殊疑问词的用法
不定式可以和疑问代词who, what, which及疑问副词when, how, where等连用，构成不定式短语，在句子中作主语、宾语、表语等。例如：
I don't know what to say. 我不知道说什么。
Can you tell me how to make a paper boat 你能告诉我怎样做一只纸船吗
I don't know which topic to choose. 我不知道选哪个题目。
Where to stay for the night is a problem. 晚上在哪儿过夜还是个问题。
4.不定式的重要句型
（1）It’s＋adj.＋for (of)sb. to do sth.
当不定式作主语时，通常用it作为形式主语，而把真正的主语不定式结构后置。例如：To meet you is a great pleasure. =It is a great pleasure to meet you.
非常高兴见到你。
To plant trees every year is necessary.= It is necessary to plant trees every year.
每年植树是必要的。
这种结构往往还要有一个逻辑主语。一般使用下面的结构：
1)It is +adj. ＋of sb.+to do sth.
It is selfish of you to eat the whole birthday cake.
你真是太自私了，吃光了整个蛋糕。
2)It is +adj. + for sb. + to do sth.
It is difficult for me to learn English well.
对我来说学好英语太难了。
【注意】
for和of引导的不定式结构的区别
表语形容词的语义不同是区别 for 结构和 of 结构的最重要标志。
1）在“It is（was）＋adj.＋for sb.＋to do sth.”的句式中，作表语的形容
词大多是表事物性质的静态形容词，如：essential，easy，difficult, important，necessary，possible，hard等等，这类形容词与for后面的名词（代词）关系不密切，无意义上的主表关系。例如：
It is necessary for us to practise speaking English every day．
每天练习说英语对我们来说是很有必要的。
2）在“It is（was）＋adj．＋of sb.…”的句式中，作表语的形容词大多是表示人物特征的形容词。如：brave，careless，careful，clever，cruel，foolish，good，honest，（un）kind noble，polite，right，rude，sweet，silly，stupid，wrong等等。这些表示人物特征的形容词与of后的名词关系十分密切，有意义上的主表关系。例如：It is kind of you（=You are kind）to send me a nice present．
谢谢你送我这么好的礼物。
It was stupid of her（=She was stupid）to make such a mistake．
出这样的错她真是太蠢了。
（2）主语＋动词＋too＋形容词／副词＋（for＋sb.）＋to+动词原形
表示“……太……而不能……”。例如：
He walked too slowly to catch up with me.
他走得太慢而不能跟上我。
It is too dark in this room for me to read a book.
房间太暗，使我无法看书。
This problem is too difficult for them to settle.
这对他们来说真是一个难解的问题。
（3）主语＋动词＋……形容词／副词＋enough＋（for sb.）＋to+动词原形表示“……对某人足以……”。例如：
We need several men strong enough to do the work.
我们需要几个强壮得足以做这件工作的人。
They bought a house large enough for ten persons to live in.
我们买了一栋房子，大得足以供十个人住。
He is competent enough to fill that position.
他足以胜任那职位。
（4）主语＋动词＋enough＋名词＋to＋动词原形
表示“……对某人足以……”。例如：
He has enough money (=money enough) to buy a car.
他有足够的钱买一辆汽车。
He hasn’t enough sense to realize his mistakes.
他没有足够的辨别力去认识自己的错误。
动词不定式专项练习
动词不定式专项练习 （一）选择 1. The policeman told the little boy _____ football in the street. It’s dangerous. A. not play B. not playing C. not to play D. to play 2. Martin looks so well. We’ve never seen him ______ so well before. A. is looked B. is looking C. to look D. look 3. They preferred ______ in bed rather than ___ horses. A. to lie; to ride B. lying; riding C. to lie; ride D. lying; ride 4. —What do you think of tomorrow’s football match? — ______difficult for us ______ the match. A. We’re; to win B. We’re; winning C. It’s; to win D. It’s; winning 5. — Hi, Peter. Why are you in such a hurry? — ______the 7:30 train. A. Catch B. To catch C. Catching D. Caught 6. Don’t forget _________ the letter. A. to send B. send C. sending D. being sent 7. The chair looks very old, but in fact it is very comfortable to _________. A. sit B. sit on C. be sat D. be sat on 8. Is ______ necessary to return the book tomorrow? A. this B. that C. it D. which 9. I’m afraid they would not allow him ________ here. A. to smoke B. smoking C. smokes D. smoke 10. Mother told me ________ the water before I drank it. A. boiling B. boiled C. boil D. to boil 11. On my way home, I stopped _______ some food. A. buy B. to buy C. buying D. bought 12. John was made _______ the car for a week as a punishment. A. to wash B. washing C. wash D. to be washing
高中动词不定式用法讲解及练习电子教案
高中动词不定式用法讲解及练习
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.
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）。
高中英语讲解不定式语法
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不定式的构成（以动词do为例） 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.
动词不定式专项讲解及训练(有答案)
动词不定式专项训练 A. to solve B. to be solve C. being solved D. solving A. for her to return B. that she must return C. her returning D. of him to return A. costs... to get B. costs... getting C. takes... to get D. takes... getting A. to explain B. to have been explained C. to be explained D. to be explaining A. to learn B. to be learning C. to have learned D. to have been learning Keys: 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. causing B. being caused C. to be caused D. to have been caused 2.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. . . to be improving D. when.. . improving 3.Remember_________the magazine when you have finished reading it. A. putting back B. having put back
初中动词不定式专题讲解及练习(全面)
语法：动词不定式 动词不定动式是一种非谓语动词形式，它没有人称和数的变化，在句子中不能作谓语，但可以作除谓语之外的其它任何句子成分（主语、表语、宾语、宾语补足语、定语和状语）；动词不定式具有名词、形容词和副词的特征，同时还保持动词的某些特点，既可以有自己的宾语和状语，动词不定式和它的宾语和状语构成不定式短语。 一、构成：to do .否定式not to do 二、常见时态：一般时to do 进行时to be doing 完成式to have done 完成进行式to have been doing 三、动词不定式在句子中的成分 1、作句子的主语:现实中常用it作形式主语，而把真正的主语动词不定式（或短语）后 置。 比较下列句子 To lear n from your frie nds is importa nt.=lt is importa nt to lear n from your frie nds . ______ To leave without say ing goodbye is impolite.= It is impolite to leave without saying ________ goodbye. To chat with Miss White is a pleasa nt thi ng.=lt is a pleasa nt thi ng to chat with Miss ______ White. To walk to school takes me ten minu tes.=lt takes me ten minu tes to walk to school. _______ 句型总结 It is + adj. + of sb. to do sb：?i= are +adj. +to do 在以某些表示人的品质、特征等的形容词（如kind、good、nice、wrong、clever、right等）作表语时，不定式之前常加一个引起的短语，说明不定式指的是谁的情况（可以理解为某人的好，坏，聪明，愚蠢，对，错等等）。 It is very kind of you to help me. It ' s not polite of himto speak to old people like that. It is + adj. + for sb. to do …乞aisb+Odj. +to do 女:果要说明不定式表示的动作是谁做的，则在不定式前加一个for引起的短语，即不定式的逻辑主语。 It is n ecessary for us to study hard ___ It is easy for him to speak En glish. 动词不定式作主语练习 1. It's our duty the room every day. A. to clea n B. clea ned C. clea n D. cleans（甘肃省）
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.
动词不定式的精讲与专项练习
动词不定式（The Infinitive） 一、概述 不定式是动词的一种非谓语形式，在句中不能单独作谓语。它有两种形式：（1）带to的不定式；（2）不带to的不定式（即通常所说的动词原形），它可以和助动词或情态动词构成谓语。不定式既有动词性质，又有名词性质。 1）不等式具有动词性质，即它有时态和语态的变化；可有自己的宾语或状语并构成不等式短语。如： Would you like to tell me an interesting story? 你可不可以给我讲一个有趣的故事？（不等式to tell有自己的宾语me和story）He was too clever a man to be fooled.他这个人很机灵，不会被愚弄的。（不等式的被动语态） I’m going to go there by bike. 我想骑自行车去那儿。（不定式有状语there） They will set up more primary schools in the countryside. 他们将在乡村修建更多的小学。（不带to的不等式与助动词will一起构成谓语）但是，不等式没有人称和数的变化，即不受人称和单数、复数的限定或影响。 She likes to play the accordion. 她喜欢弹奏手风琴。 She liked to play the accordion when she was young. 她很小就喜欢弹奏手风琴。 2）不等式具有名词性质，即它在句中可用作主语、宾语、表语等。如： To see is to believe. 百闻不如一见。（作主语） This suit doesn’t seem to fit me.这件衣服似乎不适合我穿。（作表语） She wanted to see which shops offered the best service. 她想看看哪家商店提供最好的服务。（作宾语） There’s no need to be worried. 不需要担心。（作定语） He went there to see what would happen.他去那儿是想看看会出什么事。（作状语） 3）不等式虽然在语法上不能有主语，但它表示的动作，在意思上是可以有自己的主语，在语法上这个主语称为不等式的逻辑主语。这个逻辑主语可能是整个句子的主语、宾语等，也可以用一个由for引起的短语表示。如： His friends tried to encourage him. 他的朋友设法鼓励他。（不等式的逻辑主语His friends同时也是句子的主语） Every year, tobacco companies must persuade new people to start smoking cigarettes. 每年烟草公司要设法使一些比吸烟的人开始吸烟。（不等式的逻辑主语new people是句子的宾语）It’s very difficult for a foreigner to learn Chines e. 外国人学汉语是很不容易的。（不等式的逻辑主语由for引起的短语表示） 另外，不等式的否定形式一般在它的前面直接加not或never。 The teacher has told me many times not to come late again.老师多次告诉我不要再来晚了。 She seems not to have a bright time with her new friends.和新朋友在一起她似乎过得不是太好。 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。这就是常见的 “It is adj. of sb to do sth.”句式。如：
动词不定式讲解
非谓语动词 一、英语句子需要遵循一个总原则：一个句子只能有一个动词。当一个句子必须要出现两个或两个以上的动词才能完整 表达一个意思时，为了不违法总原则，英语有四种处理方式： 1. 切分成两个或者多个句子 She is a girl. She likes English 2. 将一个谓语动词做主句，其余动词改成从句 She is the girl who likes singing. 3. 添加and, but, or, when, because, not only..but also, either..or 等连词变成并列结构 She got off the bus, but left her handbag on her seat. 4. 将其中一个动词变成非谓语动词形式 She got off the bus, leaving her handbag on her seat. 二、非谓语动词使用条件：一个句子当中，已经存在一个主句（谓语动词），又没有连词(and,but,or等)的情况下， 还有别的动词出现时，这时就要用非谓语动词 三、非谓语除了不能做谓语外，其他成分都可以做 不定式（to do） 四、非谓语动词三种形式分词现在分词（doing） 过去分词( done ) 动名词(doing) 五、非谓语动词解题技巧： 1. 判断是不是用非谓语动词（1.看有没有逗号 2.看有没有谓语 3.看有没有连词。要牢记英语中逗号不能连接两个 句子，一个句子如果没有连词只能有一个谓语） 2. 判断是主语和动词是主动还是被动关系 3. 判断时间, 确定非谓语动词和主句动词谁先发生，谁后发生 不定式的用法 不定式构成一般式完成式进行式 主动关系to do to have done to be doing 被动关系to be done to have been done 不定式动词和谓语动词发生的时间关系不定式的动作和谓语动作同时发生， 或发生谓语动作之后 he seems to know a lot 不定式的动作发生在谓语动 作之前 I regretted to have told you a lie. 不定式的动作和谓语 动作同时发生 I’m glad to be talking with you 不定式否定形式在to前加not. 即not to..... 不定式充当的成分主语，宾语，表语，定语，状语，宾补
(完整word版)动词不定式的用法讲解及练习题北京四中
北京四中 撰稿老师：黄浩编审老师：蔡正礼责任编辑：丁华 动词不定式的用法讲解及练习题 不定式既具有动词的一些特征，又具有名词，形容词和副词的句法功能 否定式：not +不定式 不定式的时态 一般说来，不定式一般式表示的动作有时与限定动词表示的动作同时发生，也有时发生在限定动词表示的动作之后。如： Who heard him say that? He seems to know this. I hope to see you again. 不定式进行式表示动作正在进行，通常与限定动词表示的动作同时发生，如： They are said to be building another bridge across the river. I happened to be going that way too. 不定式完成式表示的动作发生在限定动词表示的动作之前，如： I am sorry to have given you so much trouble. I am glad to have seen your mother. 不定式的句法功能： （1）作主语 To talk with him is a great pleasure. 不定式短语作主语时，为了保持句子的平衡，往往以it作形式主语，而把不定式短语置于谓语动词之后，如： It's nice to hear your voice. （2）作表语
Her wish is to become an artist. （3）作宾语 常用于及物动词: want , hope, wish, like, need, hate, offer, prefer, begin, start, attempt, decide, determine, expect, promise, pretend, refuse ,afford, manage, help等之后，如： You should continue to learn as long as you live. 注1：如果作宾语的不定式又有自己的补语，则须用先行词it 作形式宾语，而将真正的宾语不定式后置，如： They found it impossible to get everything ready in time. 注2：不定式一般不能作介词的宾语，只有在极少数介词如:but, except等后边才行。此时不定式可以带to或不带to,如： In very cold winter weather a cold-blooded animal has no choice but to lie down and sleep. There was nothing left to do but clean the windows.(前边有do, to 省略) 但“疑问词+不定式”结构可以作介词的宾语，如： I have no idea about what to do next. （4）作宾语补足语 通常用于及物动词或动词短语：want ,wish, ask, order, beg, tell, permit, know, help, advise, persuade, allow, prepare, cause, force, require, call on, wait for 等之后，如： The teacher asked the students to hand in their homework. （5）作定语 不定式作定语时，须放在被它修饰的名词或代词之后。被修饰的名词或代词往往是不定式的逻辑宾语。 I have a lot of work to do. 当作定语的不定式所修饰的名词或代词是不定式动作的承受者时，不定式既可用主动语态，又可用被动语态，但其含义有所不同。所以如果修饰名词的不定式的动作是主语作的, 不定式用主动。
动词不定式专项练习
动词不定式专项练习 根据句意及所给的汉语提示完成下列句子。 1．I've come____________________（借词典）． 2．I'm very sorry____________________（麻烦你）． 3．He is too frightened____________________（不能动）． 4．The teacher asked us____________________（用英语说它）． 5．I'd like____________________（吃苹果）． 6．The policeman told the boys____________________（别在公路上玩耍）．7．His uncle will teach him____________________（唱歌和跳舞）． 8．You'd better____________________（别在阳光下看书）． 9．We often watch them____________________（（踢足球）． 10．Let's____________________（去散步），shallwe？ 11．Later he left home____________________（找）that lost watch． 12．He found it very difficult____________________（入睡）． 13．Why not____________________（去划船）？ 14．She often helps her mother____________________（做家务）．15．When you leave the room，please don't forget____________________（关掉）the light． 动词不定式作坊答案： 1．to borrow the dictionary 2．to trouble you 3．to move 4．to say it in English 5．to eat apples 6．notto play on the road 7．to sing and dance 8．not read in the sun 9．play football 10．go for a walk 11．to look for 12．to get to sleep 13．go boating 14．（to）do the housework 15．to turn off
动词不定式用法讲解
动词不定式用法讲解 1、构成及特征 动词不定式(infinitive)是动词的一种非限定形式，即非谓语动词形式，它有两种形式：一种是“to + 动词原形”构成（to- infinitive）；另一种是不带to的不定式,即动词原形(bare- infinitive)。所有行为动词都有不定式形式，其否定式是在不定式前加not。动词不定式（或不定式短语）没有人称和数的变化，在句子中不能作谓语。动词不定式仍保留有动词的特点：（1）可以有时式和语态的变化，也可以有自己的宾语或状语，它们一起构成了不定式短语。He tried to work out the problem in five minutes.他试图在五分钟之内算出这道题。（带宾语和状语） The factory to be built here next year is a car factory.明年在这里建的工厂是一家汽车制造厂。（有语态的变化） （2）动词不定式还具有名词、形容词和副词的特征，在句中可以作主语、宾语、表语、补语、定语、状语等成分。 He wants to study English.他想学英语。（to study English在句中作want的宾语，而to study又有自己的宾语English, to study和English一起构成了不定式短语。）Never to offend anyone is his principle.不得罪人是他的原则。（不定式作主语） 注意：不定式在许多场合具有情态意义。作主语时，相当于一个带有情态动词的主语从句；作宾语时，相当于一个带有情态动词的宾语从句；作定语时，相当于一个带有情态动词的定语从句；作目的状语时，相当于so that 或in order that引导的目的状语从句。 It is right for her to say so.(= It is right that she should say so.)她这样说是对的。 He has a lot of work to do.(=…that he should do)他有很多工作要做。 I don’t know where to get the ticket.(= …where I could get the ticket.)我不知道哪
高中动词不定式用法讲解及练习
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。 ●不定式作状语 不定式可以作原因状语、结果状语、目的状语以及方式状语 不定式在下列句式中作目的状语：so as to do, in order to do ?In order to ensure your hair looks its best, pay attention to what you eat. 为了保证你的头发是最佳状态，请注意你的饮食。 二：不定式考点归纳： 考点1：不定式的时态和语态： 1.---Is Bob still performing? ---I’m afraid not. He is said ____the stage already as he has become an official. A. to have left B. to leave C. to have been left D. to be left 2.The news reporters hurried to the airport, only ____ the film stars had left. A. to tell B. to be told C. telling D. told 1．A. 根据句子的意思“据说他已经离开了舞台”，要用不定式的完成式的主动形式。2．B. 用动词的不定式的被动形式表示结果状语。 考点2：不定式的功能：不定式具有名词的特征，可以作主语或宾语（例5），具有形容词的特征，可以作表语、定语或补足语（例4）；具有副词的特征，在句子中可以作状语（例3）。
英语语法专项：动词不定式用法归纳及练习答案
---------------------------------------------------------------最新资料推荐------------------------------------------------------ 英语语法专项：动词不定式用法归纳及练习答案 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 1/ 7
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？