初中英语动词不定式的用法小结

一、作主语，可以用it代替，it叫形式主语，动词不定式放在后面叫真正主语

1．To learn a foreign language is not easy.

It is not easy to learn a foreign language.

2. It’s dangerous to drive very fast.

二、作表语

My idea is to ring him up at once. 我的想法是马上给他打电话。

如果主语部分含实义动词do，且作表语的动词又是“do”的内容，这时表语不定式的“to”可以省略。如：All I did was wait here. 我能做的就是在这里等。

三、常可接动词不定式作宾语的动词有：agree(同意), hope(希望), decide(决定), need(需要), mean(打算), wish(希望), fail(失败), want(想要), begin(开始), would like(想要)等。

He has decided to go to the countryside. 他已决心去乡下。

四、“疑问词+ 动词不定式”结构可以作动词know、think、find out等的宾语。

I don’t know who to ask. 我真不知道该问谁。

五、“疑问词+ 动词不定式”可以作动词show、teach、ask等后面的直接宾语。

She told me where to find the earphone. 她告诉我什么地方可以找到耳机。

六、如果宾语太长，可用it作形式宾语，构成“主语+ 谓语+ it + 宾语不足语(名词或形容词) + to do sth”结构，谓语动词常为find、think、feel等。

I found it difficult to stop him. 我发现拦截他很困难。

七、动词不定式可以作介词的宾语。

Autumn harvest is about to start. 秋收即将开始。

I’m worrying about what to do next.我正愁下一步该怎么办。

八、作定语的动词不定式与被修饰词有动宾关系。

I have a lot of books to read. 我有许多书要读。

此时，如果动词不定式动词为不及物动词，后面的介词绝对不能省略。

We had only a cold room to live in. 我们只有寒室一间。

九、作定语的动词不定式与被修饰词有主谓关系。

He is always the first to come and the last to leave. 他总是第一个到，最后一个走。

十、作定语的动词不定式与被修饰词之间只有修饰关系。

We have no time to go to town today. 今天我们没有时间去城里。

十一、作状语的动词不定式常表示目的、原因、方向、结果等。

I’m glad to meet you. 见到你，我很高兴。

They ran over to welcome the foreign guests. 他们跑过来欢迎外宾。

十二、不定式复合结构“for sb to do sth”可用作主语、表语、定语、状语等。

It’s for her t o decide. 这得由她来决定。（表语）

There are many books for you to read. 这有许多书供你阅读。（定语）

The book ids too difficult for children to read. 这本书太难了，孩子们看不懂。（结果状语）

不定式复合结构作主语时，需注意：

It’s + 形容词+ for / of + sb + to do sth.

当上面的形容词指的是to do sth的性质时，用介词for。

It’s dang erous for children to swim in the river. 孩子在这条河里游泳很危险。（游泳这件事情危险）当上面的形容词指的是sb的性质时，用介词of。这些形容词往往修饰人：good, bad, polite, unkind, kind, nice, clever, right, wrong, careful, careless

It was careless of you to do that. 你这么做真粗心。（你这个人粗心）

十三、动词hear, see, feel, watch, notice, look at, listen to等后面的动词不定式作宾语补足语时不能带to, 即常见的形式为: hear sb do sth等

Many people like to watch others play games. 许多人喜欢看别人玩游戏.

十四、let, make, have后面的动词不定式作宾语补足语, 也不能带to; help后面的动词不定式作宾语补

足语, to可有可无

She let us meet her at the station, b ut she didn’t come. 她让我们去车站迎接她,卡她没有来.

十五、十三和十四这两种情况下的动词不定式在改被动语态句子时,必须将省略的to还原,也就是说,动词后需跟带to的动词不定式.

We heard him sing every day.

He was heard to sing every day. 那时每天都听到他唱歌.

十六、跟带to的动词不定式作宾语补足语的动词还有: ask, beg, leave, like, love, hate, prefer, order, teach, tell, believe, find, know, want, think, understand, would like等

形式为: ask sb to do sth

Would you like me to visit him? 要不要我拜访他?

I would prefer you not to come tomorrow. 我宁愿你明天不要来.

He ask the driver to stop the motobike. 他要那位司机拦下那辆摩托车.

十七、区别下列词组的不同含义:

①like to do sth

like doing sth

②stop to do sth

stop doing sth

③remember to do sth

remember doing sth

④forget to do sth

forget doing sth

十八、It takes sb some time to do sth.花费某人一段时间干某事.

It took me half an hour to do my homework yesterday.昨天我花了半小时做回家作业.

It took Jim an hour and a half to read the book.吉姆花了一个半小时看这本书.

It took mother one and a half hours to do the housework.母亲花了一个半小时干家务.

用汉字表述上面的句型为:It + take + 人+ 一段时间+ to do sth.

一段时间形式往往为像这样的例子:fifteen minutes15分钟,an hour一个小时, two days两天, half a month 半个月,a year and a half一年半...等等

十九、不定式的特殊句型too…to…

①too…to太…以至于…

He is too excited to speak.

他太激动了，说不出话来。

---- Can I help you ? 需要我帮忙吗?

---- Well, I'm afraid the box is too heavy for you to carry it, but thank you all the same.不用了。这箱子太重，恐怕你搬不动。谢谢您。

②如在too前有否定词，则整个句子用否定词表达肯定，too 后那个词表达一种委婉含义，意为"不太"。

It's never too late to mend.(谚语)

改过不嫌晚。

③当too 前面有only, all, but时，意思是：非常… 等于very。

I'm only too pleased to be able to help you. 我非常高兴能帮助你。

He was but too eager to get home. 他非常想回家。

二十、不定式的特殊句型Why not

"Why not +动词原形"表达向某人提出建议，翻译为："为什么不……?" "干吗不……?"例如：

Why not take a holiday?

干吗不去度假?

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动词不定式用法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。下面以动词不定式在句中的作用来予以详细说明。 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．点击规律：动词不定式在句中作主语时，常放在It is ＋adj +(for sb.)＋(not)to do sth句型中，表示说话人对客观事件的决断，意为：做…..是……的，it仅作形式主语，真正的主语是to do sth It is very interesting to read.读书是有趣的 It is useful to read.看书是有用的 It is healthy to run every day.每天跑步是健康的 It is a little difficulty for me to work out this question.解出这道题对我来说有点难 It is bad not to finish homework.不完成作业是糟糕的 It is bad to be late for school.迟到是糟糕的 It is+adj+of sb +(not)to do sth该句型通常表示说话人对客观事件的惊讶、兴奋、懊悔、难过等感叹情绪，与It is ＋adj +(for sb.)＋(not)to do sth的意义不同。 It is very kind of you to tell me the truth．你能告诉我事实，真是太好了 It is stupid of him to do such a silly thing．他做那件傻事，真是太笨了 It is very clever of you to work out this question. 你能解出这道题目，真是太聪明了 It is very wise of you to read this novel. 你看这本小说，真是太明智了这个句型中用介词of而不是for的原因是这里的形容词是用来形容人的品质性格的。类似的词有：careless，careful，clever，considerate，foolish，good，impolite，kind，naughty，nice，silly，stupid，friendly 因此区分是用It is ＋adj +(for sb.)＋(not)to do sth还是It is+adj+of sb +(not)to do sth，要

动词不定式用法经典例句总结知识分享

动词不定式用法例句总结

定义（语态）动词和参与此动作的主语之间关系的一个术语。当主语是动作的发起者（或之一）时，称为主动语态；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 honour to be invited to Mary's birthday party. （不定式作主语是被动语态to be invited 是被邀请）It was impossible for lost time to be made up. （不定式作主语） I wish to be sent to work in the country. （不定式作宾语） Can you tell me which is the car to be repaired? （不定式作定语） He went to the hospital to be exam in ed. （不定式作状语） My work is to clea n the room every day. （不定式作表语）在There be 结构中，修饰主语的不定式可用被动，也可用主动。如：There are still many things to take care of （to be taken care of）. 但有时两种形式表达的意思不同，如：There is noth ing to do now.（ We have nothi ng to do no w.） There is nothing to be done no w.（We can do nothing no w.）形式 1）现在式：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。一般为：动词+ to do sth He seems to know this. I hope to see you aga in. = I hope that r II see you aga in. 我希望再见至M尔。 2）完成式：表示的动作发生在谓语动词表示的动作之前。 rm sorry to have give n you so much trouble. He seems to have caught a cold. 3）进行式：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 eat ing someth ing. 4）完成进行式： She is known to have been wreaking on the problem for many years. 一般在表示情绪的动词后加to do也表将来疑问词疑问词who,what,which,when,where,whether,how 语等。如： ①W hen to leave for London has not bee n decided yet. ② Mr. Smith did n't know whether to leave or stay there. ③ I asked Professor Xu how to lear n En glish well. ④The questi on was where to get the medici ne n eeded. 以上例句中疑问词+不定式部分，均可转换为相应的 could lear n ......... 后可接不定式构成不定式短语，在句中作主语、宾语、表（不定式在句子中做主语）（不定式在句子中做宾语）（不定式在句子中做直接宾语）（不定式在句子中表语）从句形式。如：①When we shall leave …③? -how I

初中不定式todo的用法

1. 不定式的用法------1.1 不定式作主语不定式作主语，往往用it作形式主语，真正的主语不定式放至句子的后面。例如：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. 不用车的时候，锁车是有必要的。 It's very kind of you to help us. 他帮助我们，他真好。 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。但是，用不定式作主语的句子中还有一个不定式作表语时，不能用It is… to…的句型。另外，这样的句子，不能用动名词作表语。例如：（对）To teach is to learn. （错）It is to learn to teach. （错）To teach is learning. （错）Teaching is to learn. 典型例题 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 答案：B. 如果不定式为不及物动词，其后应有必要的介词。当动词与介词连用时，常位于"形容词+动词不定式"结构的末尾。 1.1.1 不定式做主语It's for sb/It's of sb to do sth 这样的句子中，由于表语形容词性质的不同，导致了不定式逻辑主语标志用for或of 的区别。 1）for sb.句型中的形容词一般为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：例如： It's very hard for him to study two languages. 对他来说学两门外语是很难的。

初中英语时态总结

（1）一般现在时基本形式（以do为例）：第三人称单数：does（主语为非第三人称单数）；肯定句：主语＋动词原形＋其他； He works for us. 否定句：主语＋don‘t/doesn't＋动词原形＋其他； He doesn't work for us. 一般疑问句：Do/Does＋主语＋动词原形＋其他。肯定回答：Yes，（＋主语＋do/does）．否定回答：No，（＋主语＋don't/doesn't.）特殊疑问句：疑问词+一般疑问句语 Does he work for us? Yes, he does. No, he doesn't What does he do for us? He works for us. （2）一般过去时 be动词＋行为动词的过去式否定句式：在行为动词前加didn‘t，同时还原行为动词，或was／were＋not； was或were放于句首；用助动词do的过去式did提问，同时还原行为动词例如：Did he work for us? He didn't work for us. He worked for us. （3）一般将来时 am／are／is＋going to＋do 或 will／shall＋do am/is/are/about to + do am/is/are to + do; 一般将来时的表达方法 be going to +动词原形 be +不定式,be to+动词原形,be about to ＋动词原形 be able to +不定式 be about to+动词原形 will + 动词原形；例如：He is going to work for us.

初中英语动词不定式用法梳理及练习题

初中英语动词不定式用法动词不定式是由“不定式符号to+动词原形”构成的一种非谓语动词结构。有些动词不定式不带to，动词不定式可以作句子的主语、表语、宾语、定语、补语、状语或单独使用。不定式保留动词的某些特性，可以有自己的宾语、状语等。动词不定式和它后面的宾语、状语等一起构成短语，叫作不定式短语。一、用作主语直接把动词不定式置于句首的情况不多，多数情况用it作形式主语，把真正的主语——动词不定式置于句末，特别是不定式短语较长时。动词不定式作主语，谓语动词用第三人称单数形式。带疑问词的不定式短语作主语常置于句首，复合不定式结构作主语常置于句末。如： 1. I t is our duty to try our best to deal with these problems. ' head teacher said it was necessary to talk with his mother. to learn English well is important. see is to believe.(眼见为实；百闻不如一见) 二、用作表语动词不定式作表语，常说明主语的内容、性质、特征。如： | best way is to join an English club. first thing is to listen to the teacher carefully. 三、用作宾语 1.可以接带to的动词不定式作宾语的动词主要有：要求选择同意(ask, choose, agree)，期望决定学习(expect, hope, decide, learn)，宁可假装知道(prefer, pretend, know)，希望想要愿意(wish, want, would like / love)。如： 1)We decided to talk to some students about why they go there. ~ 2)He prefers to eat white bread and rice. 3)Id love to visit Mexico. 2.动词decide, know, learn, show, teach, tell...，介词结构on...可用疑问词带to的不定式短语作宾语，但why后面的不定式不带to。如： 1)Could you please tell me where to park my car 2)It gives advice on what to do in lots of different situations. ： 3.动词feel, find, make, think等后面，可以用it作形式宾语代替真正的宾语——动词不定式，句子结构是...feel / find / make / ... it+adj. / n.+to do...。如： I find it difficult to remember everything. 4.既可接动词不定式又可接ving形式作宾语，意思差别不太大的动词有begin, start, like, love等。一般说来，动词不定式表一次、数次的具体动作、将来动作或动作的全过程，ving形式表习惯性的连续动作。但是这种区别并不很严格，特别是美国英语，即使是习惯性的动作也可以用动词不定式。如： 1) Then I started to watch Tv. 2) I am beginning to understand my parents. .

初中英语动词不定式练习及答案

动词不定式练习：（35份）一. 根据上句意思完成下句，使两句意思相近或相同，每空一词。 1. He was so angry that he couldn’t say anything. He was too angry _______ ______ anything. 2. I don’t know when we will have the meeting. I don’t know when _______ _______ the meeting. 3. He said he would write a letter. He said he would have a letter ______ _______. 4. That you read English in the morning is very important. It is very important _____ you _____ _______ English in the morning. 5. He was so strong that he could lift the stone. （石头） He was strong _____ _____ ______ the stone. 6. His father went to Beijing for his holiday. His father went to Beijing ________ ______ his holiday. 7. They got up early so that they could get there in time. They got up early _____ ______ _______ ______ there in time. 8. His brother decided that he would buy the book. His brother decided _____ _______ the book. 9. He hopes that he can visit the Great Wall. He hopes _____ _______ the Great Wall. 10.I saw him go into the room. He was seen _____ ______ into the room. 11.We made him work five hours a day. He was made _____ ______ five hours a day. 12.Do you want to say anything for yourself? Do you have anything _____ _____ for yourself? 13.We don’t know what we shall do next. We don’t know what ____ _______ next. 14.I’m very sorry on hearing the bad news. I’m very sorry _____ _______ the bad news. 15.He stopped and had a look at me. He stopped _____ ______ a look at me. 16.I helped him with his English. I helped him _____ ______ English. 17.My father promised （许诺）that he would buy me a bike. My father promised ____ ______ me a bike. 18.The box is so heavy that I can’t carry it. The box is too heavy ______ me _______ _______. 19.“Lie down! ”the boy said to his dog. The boy ordered his dog ______ ______ down. 20.“Don’t make any noise, ”she said to me. She told me ______ _______ ________ any noise. 二. 单选： 1. This company was the first ____ portable radios as well as cassette tape recorders in the world. A. producing B. to produce C. having produced D. produced 2. The purpose of new technology is to make life easier, ____it more difficult. A .not making B. not make C .not to make D. nor to make 3. Helen had to shout ______above the sound of the music . A .making herself hear B. to make herself hear C. making herself heard D .to make herself heard

(完整版)初中英语八种时态总结归纳

初中英语八种时态总结归纳一、大凡现在时：概念：经常、反复发生的动作或行为及现在的某种状况。时间状语：often，usually，always，sometimes，everyweek（day，year，month．．．），once a week，on sundays，etc．基本结构：①be动词；②行为动词否定形式：①am／is／are＋not；②此时态的谓语动词若为行为动词，则在其前加don“t，如主语为第三人称单数，则用doesn“t，同时还原行为动词。大凡疑问句：①把be动词放于句首；②用助动词do提问，如主语为第三人称单数，则用does，同时，还原行为动词。二、大凡过去时：概念：过去某个时间里发生的动作或状态；过去习惯性、经常性的动作、行为。时间状语：ago，yesterday，the day before yesterday，last week（year，night，month．．．），in 1989，just now，at the age of 5，one day，long long ago，once upon a time，etc．基本结构：①be动词；②行为动词否定形式：①was／were＋not；②在行为动词前加didn“t，同时还原行为动词。大凡疑问句：①was或were放在句首；②用助动词do的过去式did提问，同时还原行为动词。三、现在进行时：概念：表示现阶段或说话时正在进行的动作及行为。时间状语：now，at this time，these days，etc．基本结构：am／is／are＋doing

否定形式：am／is／are＋not＋doing 大凡疑问句：把be动词放在句首四、过去进行时：概念：表示过去某段时间或某一时刻正在发生或进行的行为或动作。时间状语：at this time yesterday，at that time或以when引导的谓语动词是大凡过去时的时间状语等。基本结构：was／were＋doing 否定形式：was／were＋not＋doing 大凡疑问句：把was或were放在句首五、现在完成时：概念：过去发生或已经完成的动作对现在造成的影响或结果，或从过去已经开始，持续到现在的动作或状态。时间状语：recently，lately，since．．．，for．．．，in the past few years，etc．基本结构：have／has＋done 否定形式：have／has＋not＋done 大凡疑问句：have／has放于句首六、过去完成时：概念：以过去某一时间为标准，在此以前发生的动作或行为，或在过去某动作之前完成的行为，即“过去的过去”。时间状语：before，by the end of last year（term，month．．．），etc．基本结构：had＋done