1. 英语语法:不定式结构以及用法
to do=to+动词原形
to是该结构的“标志”
既是使用标志又是判断标志
基本式to do
进行式to be doing
被动式to be done
完成专式to have done
以上是该结构属的基础机构,
用法是放在谓语动词后表
将发生的是。
2. 初二英语中的动词不定式是怎样的啊
动词不定式概述
一 不定式的体
1. 不定式的一般式(to do)表示不定式的.动作将要发生或与谓语动作同时发生.
2 不定式的进行体(to be doing)表示不定式的动作正在发生.
不定式的完成体(to have done)表示不定式的动作在谓语动作之前发生.
二 不定式的逻辑主语
1 不定式的逻辑主语常不出现在句中.
2 句子的主语,宾语有时是不定式的逻辑主语.
3 不定式前"for+名词/代词"结构中的名词或代词也可以用来表示不定式的;逻辑主语.
4 在"It+be+形容词+of+名词/代词+to do"结构中,名词或代词为不定式的逻辑主语.该结构中的形容词通常用来表示人的品质.例如:kind, good, nice, bad, cruel, honest, bold, thoughtful, right, wrong, wise, clever, silly, foolish, careless, rude等.
例如:It's very kind of you to cal to tell me about the conference.
三 不定式的否定式
不定式否定式由not/never +to do构成
四 不定式的句法功能
1 不定式做主语
1)To say something is one thing; to do it is another.
2)It is not a good idea to build houses along the lines where two of the earth's plates join together.
注:充当主语的不定式即可置于句首,位于谓语动词之前,也可作为句子的真正主语置于句末,用作形式主语.
2 不定式作表语
3)Her uncle seems to be acting rather strangely towards her these days.
4)The purpose of the fence is to keep out a type of wild dog called a "Dingo".
5)One suggested answer is for farmers to limit the number of their cattle.
注:充当表语的不定式一般位于be ,seem等系动词后.
3 不定式作宾语
6)Shylock agreed to lend Antonio money on one condition.
注:充当宾语的不定式位于及物动词后.常用不定式作宾语的动词有:agree, plan, determine, dare, refuse, hope, wish, expect, promise, choose, pretend, decide, manage, intend, offer, afford, demand.
7)The sty air makes it difficult to get a clear picture of space.
注:充当宾语的不定式如果有自己的表语,则可用代替只个不定式作为形式宾语,而作为真正宾语的不定式则放在表语之后.以it作为形式宾语的这种结构常用在think, feel, find, make, consider等动词之后.
big and strong.
4 不定式作宾语补足语
8)The powder made from fish, blood and bones will make the cabbage plants grow big and strong.
9)Portia told Bassanio to go to his friend at once.
注:在下列动词后作宾语补足语的不定式通常不带to.这些动词是observe, notice, see, hear, watch, have, feel, make, let.但上述动词转换为被动语态时,其后的不定式须带to.例如:The cabbage plants will be made to grow
动词不定式(todo)是初中英语课的一个重点,也是中考要考查的一个项目。动词不定式属于非谓语动词的一种形式,很多同学经常把它和谓语动词混在一起,掌握起来有困难。下面我们对动词不定式的用法做简单归纳,帮助同学们记忆:
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。
例:Togoinforsportshelpsyou
stayfit.(book4,L28)..
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’srightofhimtorefusethe
invitation.(him为逻辑主语)
2、表语:Ourtyistoprotecttheenviroment.
3、动词宾语:此种情况可按固定搭配或句式去记。
例:wouldyouliketoseemyphotos?Kevinplannedtovisithisuncle.(book4,L11)
和plan用法一样的词还有:start,want,agree,hope,begin,decide等。
Ifounditverydifficulttogeta
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:Iaskedafriendtoreadittome.(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。例:.
5、定语:动词不定式做定语放在所修饰的名词的后面。
例:Vinnyisthefirstdisabledper鄄sontosailaroundtheworld.(book4,
L1)6、形容词补足语:在表示心理、感情、评价等的形容词后,对其进行补充说明。
例:Weareverygladtomeetyouagain.
7、状语:表示目的、原因、程度等。
例:Theybroughtinphotosoftheir
familiesformetolookat.(book4,L2)
8、“疑问词+不定式”用法:不定式前可带what,who,which,where,when,how等疑问词,这种不定式短语在句中多用做宾语。
例:Hedidn’ttellmewheretogo.9、在初中阶段还涉及到“不定式被动语态一般式(tobe+过去分词)”
例:.
解读动词不定式作主语、宾语、定语、状语
在中学教科书中,动词不定式是一个非常重要的语法点;在历年高考中,动词不定式是频频考查的要点之一;在学生的学习实践中,动词不定式是琐碎、难学的语法项目之一。为了更熟练、准确、有针对性地掌握此项语法知识,下面把(N)MET对动词不定式作主语、宾语、定语及状语的考查点进行总结、归纳。
I. 不定式作主语
1. 不定式作主语时,常用it作形式主语,而将作主语的不定式放在句子后部。例如:
It is good to help others.帮助他人是件好事。
It is exciting to surf the Internet.上网是件令人兴奋的事。
2. 不定式作主语与V-ing形式作主语的不同:前者作主语时,常表示某一次具体的动作;而后者常表示习惯性的动作。例如:
To teach the three children is my job this afternoon. 教这三个孩子是今天下午我的工作。
Walking is a good form of exercise. 散步是锻炼的一种好方式。
简析: It's ... of sb. to do sth.与It's... for sb. to do sth.
当表语形容词说明不定式的逻辑主语具有某种品质时,常用"It's...of sb. to do sth."。例如:
It's very kind / nice of you to help me。感谢你的帮助。
当表语形容词说明不定式具有某种特征时,应使用 "It's ...for sb. to do sth."。例如:
It's hard for the Chinese students to learn Russian. 中国学生学俄语是很难的。
[高考题例]
1. Is ________ necessary to complete the design before National Day?
A. this B. that C. it D. he
2. It was foolish ________ you to give up what you rightly owned.
A. for B. of C. about D. from
II. 不定式作宾语
1. 学习不定式作宾语时,要注意掌握四种动词:
1) 后接不定式作宾语的动词。常见动词有: offer, decide, hope, promise, agree, plan, manage, refuse, wish, pretend, learn, want等。
2) 后接V-ing形式作宾语的动词。常见动词有: enjoy, mind, suggest, advise, finish, practise, imagine, admit, avoid, delay等。
3)后接不定式和V-ing形式作宾语均可,且没有大的区别的动词。常见动词有: start, begin, continue等。
4)后接不定式和V-ing形式作宾语均可,但意思不同的动词。常见动词及短语有:try, remember, forget, regret, stop, go on等。例如:
Please remember to lock the door when you go out. 出去时请记住要锁门。
I don't remember lending you any money. 我不记得借过钱给你。
I regret saying what I said. I shouldn't have said it. 我后悔我所说过的话,我本不该说那些话。
I regret to tell you that you failed your driving test. 我很遗憾地告诉你,你没有通过驾驶测试。
The minister went on talking for two hours. 部长的讲话持续了两个小时。
After discussing the economy, the minister then went on to talk about foreign policy. 讨论完经济,部长接着谈论外交政策。
2. 动词不定式在句中作宾语,如带有宾语补足语时,要先用it作形式宾语,而将该不定式后置。例如:
I don't think it right to do it in that way.我觉得以那种方式去做是不恰当的。
I find it hard to get along with him. 我发现与他相处不是件容易的事。
3. "疑问代词、疑问副词 + 不定式"常常用作动词或介词的宾语。例如:
I don't know where to spend my holiday. 我不知该去哪儿度假。
Have you decided when to marry?你决定什么时候结婚了吗?
3. 英语中动词不定式的详细用法
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。
二、 不定式的时态
不定式常用的时态有一般时、完成时、进行时和完成进行时四种,常用的为前三种。
1. 一般时
动词不定式的一般式表示不定式的动作或状态与谓语动词所表示的动作同时发生或在之后发生。如:
I plan to attend the meeting.
我计划参加这次会议。
2. 完成时
不定式的完成式表示不定式的动作发生在谓语动词表示的动作之前。如:
I am sorry to have kept you waiting.
很抱歉让你久等了。
3. 进行时
不定式的进行式表示不定式的动作与谓语动词所表示的动作同时发生。如:
They are said to be working hard.
据说他们工作得很努力。
4. 完成进行时
不定式的完成进行式表示不定式的动作在谓语动词之前已经发生,并且一直进行着。如:
He is said to have been working in that factory for twelve years.
据说他已在那家工厂工作12年了。
三、 动词不定式在句中的作用
1. 作主语
如:To live is to work.
生活就是工作。
To save time is to lengthen life.
节约时间就等于延长了人的生命。
不定式结构作主语时,现代英语倾向于采用it作形式主语,而把不定式结构后置的形式。如:
It is important for students to study English.
学好英语对学生来说是很重要的。
2. 作定语
(1)不定式作定语,要放在它所修饰的名词或代词的后面。如:
I have nothing to say on this question.
对这个问题我无可奉告。
(2)如果不定式是不及物动词,后面就应有必要的介词。如:
Give me a piece of paper to write on. 给我一张纸写字。
(3)有些名词常可用不定式作定语。如:
Our teacher had no time to think about rest.
我们老师根本没时间考虑休息一下。
3. 作宾语
I wish to be a college student.
我希望成为一名大学生。
有的及物动词要求跟复合宾语(宾语+宾语补足语)。如果其中的宾语是不定式短语,则必须将形式宾语it放在宾语的位置上,而将不定式短语(真正的宾语)放在宾语补足语之前。如:
I find it useful to learn English well.
我发现学好英语很有用。
4. 作宾语补足语
动词不定式作宾语补足语是动词不定式用法的一个重点,学习时要注意以下三种情况。
(1)作动词ask, like, tell等的宾语补足语时,动词不定式符号to不可以省略。如:
He asked me to talk about English study.
他请我谈谈英语学习。
(2)作使役动词let, have, make以及感官动词feel, hear, see, watch等的宾语补足语时,动词不定式符号to要省略。如:
The teacher made him say the word like this.
老师让他像这样说这个单词。
(3)作动词help的宾语补足语时,动词不定式符号to可以带,也可以不带。如:
Could you help me (to) carry the heavy box?
你能帮我搬这个重箱子吗?
5. 作状语
动词不定式及其短语具有副词的特性,可在句中作状语。
(1)作目的状语。如:
He stopped to have a rest.
他停下来休息。
(2)作结果状语。如:
He woke up to find everybody gone.
他醒来发现大家都走了。
(3)在某些表示喜、怒、哀、乐等的形容词后作原因状语。如:
I’m sorry to hear your grandma is ill.
听到你奶奶生病真遗憾。
(4)在带有enough或too的句子里作状语,表程度。如:
He is old enough to go to school.
他到了上学年龄了。
(5)强调动词不定式所表示的目的时,动词不定式可用in order to或so as to +动词原形,so as to不用于句首。如:
The bus stopped so as to pick up passengers.
公共汽车停下来以便接乘客。。。
字典和语法书上查得的,现成的答案,建议你买本语法书看看,很有用!
4. 急求新目标初二上学期动词不定式用法.重点句型总结好的追加100分
常见动词不定式词组、句型用法总结
.固定用法(非谓语动词):以下是带to的动词不定式常见搭配
★希望做某事hope to do sth. ★决定做某事decide to do sth
★同意做某事agree to do sth. ★需要某人做某事need to do sth.
★使用某物做某事use sth to do sth ★迫不及待做某事can’t wait to do
★准备做某事get/be ready to do ★尽力/努力做某事try to do sth
★ 计划做某事plan to do sth. ★希望某人做某事wish sb. to do sth.
★轮流做某事take one’s turns to do sth. ★拒绝做某事refuse to do sth.
★告诉某人做某事tell sb. to do sth.★请某人做某事ask sb. to do sth.
★想要某人做某事want /would like sb. to do sth. ★不得不have to do
★同意某人做某事agree sb. to do sth. ★教某人做某事teach sb. to do sth.
★喜欢/想要某人做某事 like sb. to do sth.★encourage sb to do鼓励某人做
★帮助某人做某事help sb. to do sth/help sb.do
★It’s one’s turn to do sth. 轮到某人做某事 例:It your turn to clean the blackboard.
★It’s time(for sb.) to do sth.是某人做某事时候了 例:It’s time for me to go home.
★It’s +adj. for/of sb. to do sth. 对于某人来说做某事是……
例: It is easy for me to learn it well. It is very kind/foolish/nice of you to do so.
★It takes sb. sometime to do sth. 某人做某事花了某时间
例句: 1.It takes me an hour to get to school by bike. 2.It took me an hour to watch TV last night. 3.It will take her two weeks to finish the work.
★too+adj./adv. to do sth. 太…..而不能 例: He was to angry to say a word.
★find/think/feel it +adj. to do sth.发现/认为/感到做某事是… I find/think/feel it hard to learn English well.
★序数词+to do 第…..个做某事 例句:Who is the first to get there?
★我不知/忘记了怎么办。I didn't know/forgot what to do.
★离开房间时不要忘记/记住关灯
例句:Don’t forget/Remember to turn off the lights when you left the room
★be+adj+to do sth 例句:I am very sorry to hear that. I am ready to help others. I am happy / pleased / glad to meet you.
顺口溜:本领最多不定式,主表定补宾和状;样样成分都能干,只有谓语它不敢;大家千万要小心,有时它把句型改;作主语时用it,自己在后把身藏;七个感官三使役,宾补要把to甩开;疑问词后接上它,宾语从句可充当;逻辑主语不定式,不定式前加for sb.;to前not是否定,各种用法区别开。
以下是不带to的动词不定式(即动词原形)的常见用法
★ let sb. do sth让某人做某事 ★ make do sth使得某人做某事
★ hear do sth do sth听见某人做某事 ★see do sth do sth看见某人做某事
★why not/why don’t you +动原?为什么不.?Why not/Why don’t you take a walk?
★ 某人+had better( not)do 某人最好(不)做某事
★情态动词can/may /must /should+ 动词原(包括情态动词的否定形式+动词原形)
★ 助动词do/does/did/will/would在构成疑问句或者构成否定句即don’t /doesn’t /didn’t /will not /would not+ 动词原形
★ be going to + 动词原形(表示“即将”“打算” 做某事)
使用-ing分词的几种情况
1.在进行时态中。He is watching TV. They were dancing at nine o'clock last night.
2.在there be结构中。如:There is a boy swimming in the river.
3.在have fun/problems结构中。如:We have fun learning English this term.
They had problems getting to the top of the mountain.
4.在介词后面。如:Thanks for helping me. Are you good at playing basketball?
What /How about doing sth? 做某事怎么样? I am interested in playing football.
5.在以下结构中 1. enjoy doing sth 喜欢做某事;
2. finish doing sth; 完成做某事; 3.feel like doing sth 想要做某事;
4. stop doing sth 停止做某事(原来的事) 5.forget doing sth 忘记做过某事
6. go on doing sth 继续做某事(原来的事);7.remember doing sth 记得做过某事
8. like doing sth 喜欢做某事; 9.find /see/hear/watch sb doing发现/看到/听到/观看某人做
10. try doing sth 试图做某事; 11. need doing sth 需要做某事;
12. prefer doing sth 宁愿做某事; 13.mind doing sth 介意做某事;
14. miss doing sth 错过做某事; 15.practice doing sth 练习做某事;
16. be busy doing sth 忙于做某事;17.can't help doing sth 禁不住做某事;
18.waste time/money doing 浪费时间/钱做; 19.keep sb.doing 让…始终/一直做…
20. stop sb.(from)doing 阻止某人做某事
21. prefer doing A to doing B=like A better than B喜欢做B更喜欢做A
22. “do some +doing”短语 如:do some shopping/do some washing/do some reading/do some practicing/do some cleaning/do some speaking
23.“go doing”短语去做某事(主要指文娱活动等)如:go shopping/go fishing/go swimming/go hiking/go skating/go camping/go skiing(滑雪/go boating /go hunting (打猎)
.注意动词的过去分词的常见搭配: I feel(am/was) excited/ surprised/ amazed /interested /tired/pleased/worried/lost
Keep…closed/ a boy called/named Tom
5. 英语语法不定式
分析句子成分时应该看句子结构,而不是意思。
找主语的一个办法就是看谓语动词,然后看这个动词的施动者。
在这一句中,你看得出谓语是is吗?那么不容易的是他呢,还是画这幅画不容易呢?显然是后者。所以主语就定了,是to draw such a picture,him是做for 的宾语。在悄悄告诉你哦,him一般是不会做主语的,要做主语也应该是he,对吧。
然后楼上那句句子调换位置也是对的。
记住,不能把英语的句式结构看死,它是可以随便变的。
6. 初二英语动词不定式
动词不定式概述
一 不定式的体
1. 不定式的一般式(to do)表示不定式的.动作将要发生或与谓语动作同时发生.
2 不定式的进行体(to be doing)表示不定式的动作正在发生.
不定式的完成体(to have done)表示不定式的动作在谓语动作之前发生.
二 不定式的逻辑主语
1 不定式的逻辑主语常不出现在句中.
2 句子的主语,宾语有时是不定式的逻辑主语.
3 不定式前"for+名词/代词"结构中的名词或代词也可以用来表示不定式的;逻辑主语.
4 在"It+be+形容词+of+名词/代词+to do"结构中,名词或代词为不定式的逻辑主语.该结构中的形容词通常用来表示人的品质.例如:kind, good, nice, bad, cruel, honest, bold, thoughtful, right, wrong, wise, clever, silly, foolish, careless, rude等.
例如:It's very kind of you to cal to tell me about the conference.
三 不定式的否定式
不定式否定式由not/never +to do构成
四 不定式的句法功能
1 不定式做主语
1)To say something is one thing; to do it is another.
2)It is not a good idea to build houses along the lines where two of the earth's plates join together.
注:充当主语的不定式即可置于句首,位于谓语动词之前,也可作为句子的真正主语置于句末,用作形式主语.
2 不定式作表语
3)Her uncle seems to be acting rather strangely towards her these days.
4)The purpose of the fence is to keep out a type of wild dog called a "Dingo".
5)One suggested answer is for farmers to limit the number of their cattle.
注:充当表语的不定式一般位于be ,seem等系动词后.
3 不定式作宾语
6)Shylock agreed to lend Antonio money on one condition.
注:充当宾语的不定式位于及物动词后.常用不定式作宾语的动词有:agree, plan, determine, dare, refuse, hope, wish, expect, promise, choose, pretend, decide, manage, intend, offer, afford, demand.
7)The sty air makes it difficult to get a clear picture of space.
注:充当宾语的不定式如果有自己的表语,则可用代替只个不定式作为形式宾语,而作为真正宾语的不定式则放在表语之后.以it作为形式宾语的这种结构常用在think, feel, find, make, consider等动词之后.
big and strong.
4 不定式作宾语补足语
8)The powder made from fish, blood and bones will make the cabbage plants grow big and strong.
9)Portia told Bassanio to go to his friend at once.
注:在下列动词后作宾语补足语的不定式通常不带to.这些动词是observe, notice, see, hear, watch, have, feel, make, let.但上述动词转换为被动语态时,其后的不定式须带to.例如:The cabbage plants will be made to grow
动词不定式(todo)是初中英语课的一个重点,也是中考要考查的一个项目。动词不定式属于非谓语动词的一种形式,很多同学经常把它和谓语动词混在一起,掌握起来有困难。下面我们对动词不定式的用法做简单归纳,帮助同学们记忆:
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。
例:Togoinforsportshelpsyou
stayfit.(book4,L28)..
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’srightofhimtorefusethe
invitation.(him为逻辑主语)
2、表语:Ourtyistoprotecttheenviroment.
3、动词宾语:此种情况可按固定搭配或句式去记。
例:wouldyouliketoseemyphotos?Kevinplannedtovisithisuncle.(book4,L11)
和plan用法一样的词还有:start,want,agree,hope,begin,decide等。
Ifounditverydifficulttogeta
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:Iaskedafriendtoreadittome.(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。例:.
5、定语:动词不定式做定语放在所修饰的名词的后面。
例:Vinnyisthefirstdisabledper鄄sontosailaroundtheworld.(book4,
L1)6、形容词补足语:在表示心理、感情、评价等的形容词后,对其进行补充说明。
例:Weareverygladtomeetyouagain.
7、状语:表示目的、原因、程度等。
例:Theybroughtinphotosoftheir
familiesformetolookat.(book4,L2)
8、“疑问词+不定式”用法:不定式前可带what,who,which,where,when,how等疑问词,这种不定式短语在句中多用做宾语。
例:Hedidn’ttellmewheretogo.9、在初中阶段还涉及到“不定式被动语态一般式(tobe+过去分词)”
例:.
解读动词不定式作主语、宾语、定语、状语
在中学教科书中,动词不定式是一个非常重要的语法点;在历年高考中,动词不定式是频频考查的要点之一;在学生的学习实践中,动词不定式是琐碎、难学的语法项目之一。为了更熟练、准确、有针对性地掌握此项语法知识,下面把(N)MET对动词不定式作主语、宾语、定语及状语的考查点进行总结、归纳。
I. 不定式作主语
1. 不定式作主语时,常用it作形式主语,而将作主语的不定式放在句子后部。例如:
It is good to help others.帮助他人是件好事。
It is exciting to surf the Internet.上网是件令人兴奋的事。
2. 不定式作主语与V-ing形式作主语的不同:前者作主语时,常表示某一次具体的动作;而后者常表示习惯性的动作。例如:
To teach the three children is my job this afternoon. 教这三个孩子是今天下午我的工作。
Walking is a good form of exercise. 散步是锻炼的一种好方式。
简析: It's ... of sb. to do sth.与It's... for sb. to do sth.
当表语形容词说明不定式的逻辑主语具有某种品质时,常用"It's...of sb. to do sth."。例如:
It's very kind / nice of you to help me。感谢你的帮助。
当表语形容词说明不定式具有某种特征时,应使用 "It's ...for sb. to do sth."。例如:
It's hard for the Chinese students to learn Russian. 中国学生学俄语是很难的。
7. 求答案!八年级英语动词不定式语法求
like
love
don't like
can't stand
B
E
A
C
D
8. 八上英语第九单元第二模块语法。 外教出版社的。 不定式的。整篇的
动词不定式(非谓语动词):
指在句子中不是谓语的动词,主要包括不定式、动名词和分词(现在分词和过去分词),即动词的非谓语形式。非谓语动词除了不能独立作谓语外,可以承担句子的任何成分。
非谓语动词与谓语动词的相同点有
(1)如果是及物动词都可与宾语连用,例如: They built a garden. They suggested building a garden. (2)都可以被状语修饰: The suit fits him very well. The suit used to fit him very well. (3)都有主动与被动, “体”式(一般式;进行式;完成式)的变化。例如: He was punished by his parents.(谓语动词被动语态) He avoided being punished by his parents.(动名词的被动式) We have written the composition.(谓语动词的完成时) Having written the composition, we handed it in.(现在分词的完成式) (4)都可以有逻辑主语 They started the work at once.(谓语动词的逻辑主语) The boss ordered them to start the work.(动词不定式的逻辑主语) We are League members.(谓语动词的主语) We being League member, the work was well done. (现在分词的逻辑主语) (5) 否定式一般用not, 并且放在非谓语动词之前
非谓语动词与谓语动词的不同点有
(1)非谓语动词可以有名词作用(如动词不定式和动名词),在句中做主语、宾语、表语。 (2)非谓语动词可以有形容词作用(如动词不定式和分词),在句中做定语、表语或宾语补足语。 (3)非谓语动词可以有副词作用(如动词不定式和分词),在句中作状语。 (4)谓语动词在句中作谓语,受主语的人称和数的限制;非谓语动词在句中不能单独作谓语,它不受主语的人称和数的限制。 (5)英语中不能单独做句子的谓语。
编辑本段功能及用法
动词不定式
动词不定式:(to)+do,具有名词、形容词、副词的特征。 否定式:not + (to) do 以do为例,动词不定式的构成如下: 时态/语态 主动语态 被动语态
一般时 to do to be done
进行时 to be doing
完成时 to have done to have been done
完成进行时 to have been doing
(1)一般式:不定式的一般式所表示的动作与谓语动词动作同时发生或发生在谓语动词动作之后. 例如: I'm glad to meet you. 很高兴见到你。 He seems to know a lot. 他看起来懂得很多。 We plan to pay a visit. 我们计划花钱去参观。 He wants to be an artist. 他想成为一个艺术家。 The patient asked to be operated on at once. 病人要求马上手术。 The teacher ordered the work to be done. 老师要求完成工作。 (2)进行式:不定式的进行式所表示的动作与谓语动词动作同时发生,例如: The boy pretended to be working hard. 男孩假装工作得很努力。 He seems to be reading in his room. 看起来他正在他的房间里面读书。 (3)完成式:不定式的完成式表示的动作发生在谓语动词动作之前,例如: I regretted having told a lie. 我后悔我说谎了。 I happened to have seen the film. 我偶然看过这部电影。 He is pleased to have met his friend. 他很高兴能遇上他的朋友。
不定式的句法功能:
(1)作主语: To finish the work in ten minutes is very hard. 十分钟之内完成这项工作是很难的。 To lose your heart means failure. 灰心意味着失败。 动词不定式短语作主语时,常用it作形式主语,真正的主语不定式置于句后,例如上面两句可用如下形式: It is very hard to finish the work in ten minutes. 十分钟之内完成这项工作是很难的。 It means failure to lose your heart. 灰心意味着失败。 常用句式有:1、It+be+名词+to do。2、It takes sb.+some time+to do。3、It+be+形容词+of sb +to do。常用careless,,clever,good,foolish,honest,kind,lazy,nice,right,silly,stupid,wise,等表示赞扬或批评的形容词,不定式前的sb.可作其逻辑主语。 (2)作表语: Her job is to clean the hall. 她的工作是打扫大厅。 He appears to have caught a cold. 他似乎感冒了。 (3)作宾语: 常与不定式做宾语连用的动词有:want, hope, wish, offer, fail, plan, learn, pretend, refuse, manage, help, agree, promise, prefer, 如果不定式(宾语)后面有宾语补足语,则用it作形式宾语,真正的宾语(不定式)后置,放在宾语补足语后面,例如: Marx found it important to study the situation in Russia. 马克思发现研究俄国的情况是很重要的。 动词不定式也可充当介词宾语,如: I have no choice but to stay here. 我只能留在这里,别无选择。 He did nothing last Sunday but repair his bike. 他上周日除了修他的自行车什么也没干。 动词不定式前有时可与疑问词连用,如: He gave us some advice on how to learn English. 他给了我们一些学英语的建议。 (4)作宾语补足语: 在复合宾语中,动词不定式可充当宾语补足语,如下动词常跟这种复合宾语:want, wish, ask, tell, order, beg, permit, help, advise, persuade, allow, prepare, cause, force, call on, wait for, invite. 此外,介词有时也与这种复合宾语连用,如: With a lot of work to do, he didn't go to the cinema. 他有很多工作要做,所以没去电影院。 有些动词如make, let, see, watch, hear, feel, have等与不带有to的不定式连用,但改为被动语态时,不定式要加to, 如: I saw him cross the road. 我看见他横过公路。 He was seen to cross the road. 他被我看见横过公路。 (5)作定语: 动词不定式作定语,放在所修饰的名词或代词后。与所修饰名词有如下关系: ①动宾关系: I have a meeting to attend. 我有一个会议要出席。 注意:不定式为不及物动词时,所修饰的名词如果是地点、工具等,应有必要的介词,如: He found a good house to live in. 他找到了一个居住的好房子。 The child has nothing to worry about. 这个孩子无忧无虑。 What did you open it with? 你用什么打开它? 如果不定式修饰time, place, way,可以省略介词: He has no place to live. 他无处安身。 This is the best way to work out this problem. 这是解决这个问题的最好办法。 如果不定式所修饰名词是不定式动作承受者,不定式可用主动式也可用被动式: Have you got anything to send? 你要送什么东西吗? Have you got anything to be sent? 你有什么东西需要送吗? ②说明所修饰名词的内容: We have made a plan to finish the work. 我们制定了一个完成工作的计划。 ③被修饰名词是不定式逻辑主语: He is the first to get here. 他第一个来到这儿。 (6)作状语: ①表目的: He worked day and night to get the money. 他夜以继日地工作来赚钱。 She sold her hair to buy the watch chain. 她卖掉了自己的头发来买那条表链。 注意不定式放句首时,逻辑主语与句子主语要一致: wrong:To save money, every means has been tried. right:To save money, he has tried every means. 为了省钱,他使出了浑身解数。 wrong:To learn English well, a dictionary is needed. right:To learn English well, he needs a dictionary. 为了学好英语,他需要一本词典。 ②表结果(往往是与预期愿望相反的结果 意料之外): 常放在never only后 He arrived late only to find the train had gone. 他来晚了,只见火车已经走了。 I visited him only to find him out. 我去拜访他,只见他出去了。 ③表原因:常放在形容词后面 They were very sad to hear the news. 他们听到这条新闻非常伤心。 ④表程度: It's too dark for us to see anything. 太暗了,我们什么也看不见。 The question is simple for him to answer. 这问题由他来回答是很简单的。 (7)作目的状语:既可以放在句首,也可以放在句尾 To tell you the truth, I don't like the way he talked. 说实话,我不喜欢他讲话的方式。 (8)不定式的省略:保留to省略do动词。 If you don't want to do it, you don't need to. 如果你不想做这件事,你就不必做。 (9)不定式的并列:第二个不定式可省略to。 He wished to study medicine and become a doctor. 他希望学医并成为医生。
动名词
动名词: 动名词既具有动词的一些特征,又具有名词的句法功能。 一般式 (谓语动词同时发生) doing being done
完成式 (谓语动词发生之前) having done having been done
动名词的形式: Ving 否定式:not + 动名词 (1)一般式: Seeing is believing. 眼见为实。 (2)被动式: He came to the party without being invited.他未被邀请就来到了晚会。 (3)完成式: We remembered having seen the film. 我们记得看过这部电影。 (4)完成被动式: He forgot having been taken to Guangzhou when he was five years old. 他忘记五岁时曾被带到广州去过。 (5)否定式:not + 动名词 I regret not following his advice. 我后悔没听他的劝告。 (6)复合结构:物主代词(或名词所有格)+ 动名词 He suggested our trying it once again. 他建议我们再试一次。 His not knowing English troubled him a lot. 他不懂英语给他带来许多麻烦。
动名词的句法功能:
(1)作主语: Reading aloud is very helpful. 朗读是很有好处的。 Collecting stamps is interesting. 集邮很有趣。 当动名词短语作主语时常用it作形式主语。 It's no use quarrelling.争吵是没用的。 (2)作表语: In the ant city, the queen's job is laying eggs. 在蚂蚁王国,蚁后的工作是产卵。 (3)作宾语: They haven't finished building the dam. 他们还没有建好大坝。 We have to prevent the air from being polluted. 我们必须阻止空气被污染。 注意动名词既可作动词宾语也可作介词宾语,如上面两个例句。此外,动名词作宾语时,若跟有宾语补足语,则常用形式宾语it,例如: We found it no good making fun of others. 我们发现取笑他人不好。 要记住如下动词及短语只跟动名词作宾语: enjoy, finish, suggest, avoid(避免), excuse ,delay, imagine, keep, miss, consider, admit(承认),deny(否认), mind, permit, forbid, practise, risk(冒险), appreciate(感激), be busy, be worth, feel like, can't stand, can't help(情不自禁地), think of, dream of, be fond of, prevent…(from),keep …from, stop…(from),protect…from, set about, be engaged in, spend…(in), succeed in, be used to, look forward to, object to, pay attention to, insist on, feel like (4)作定语: He can't walk without a walking-stick. 他没有拐杖不能走路。 Is there a swimming pool in your school? 你们学校有游泳池吗? (5)作同位语: The cave, his hiding-place is secret. 那个山洞,他藏身的地方很秘密。 His habit, listening to the news on the radio remains unchanged. 他收听收音机新闻节目的习惯仍未改变。
现在分词
现在分词: 现在分词既具有动词的一些特征,又具有形容词和副词的句法功能。 现在分词的形式: 否定式:not + 现在分词 (1)现在分词的主动语态:现在分词主动语态的一般式表示与谓语动词所表示的动作同时发生,完成 式表示的动作在谓语动词所表示的动作之前发生,常作状语。例如: They went to the park, singing and talking. 他们边唱边说向公园走去。 Having done his homework, he played basket-ball. 做完作业,他开始打篮球。 (2)现在分词的被动语态:一般式表示与谓语动词同时发生的被动的动作,完成式表示发生在谓语动 词之前的被动的动作。 The problem being discussed is very important. 正在被讨论的问题很重要。 Having been told many times, the naughty boy made the same mistake. 被告诉了好几遍,这个淘气的孩子又犯了同一个错误。
现在分词的句法功能:
(1)作定语:现在分词作定语,当分词单独做定语时,放在所修饰的名词前;如果是分词短语做定语 放在名词后。 In the following years he worked even harder. 在后来的几年中,他学习更努力了。 The man speaking to the teacher is our monitor's father. 正与老师谈话的那个人是我们班长的父亲。 现在分词作定语相当于一个定语从句的句法功能,如:in the following years也可用in the years that followed; the man speaking to the teacher可改为the man who is speaking to the teacher. (2)现在分词作表语: The film being shown in the cinema is exciting. 正在这家上演的电影很棒。 The present situation is inspiring. 当前的形势鼓舞人心。 be + doing既可能表示现在进行时,也可能是现在分词做表语,它们的区别在于be + doing表示进行的 动作是进行时,而表示特征时是系动词be与现在分词构成系表结构。 (3)作宾语补足语: 如下动词后可跟现在分词作宾语补足语: see, watch, hear, feel, find, get, keep, notice, observe, listen to, look at, leave, catch等。例如: Can you hear her singing the song in the next room? 你能听见她在隔壁唱歌吗? He kept the car waiting at the gate. 他让小汽车在门口等着。 (4)现在分词作状语: ①作时间状语: (While) Working in the factory, he was an advanced worker. 在工厂工作时,他是一名先进工人。 ②作原因状语: Being a League member, he is always helping others. 由于是共青团员,他经常帮助他人。 ③作方式状语,表示伴随: He stayed at home, cleaning and washing. 他呆在家里,又擦又洗。 ④作条件状语: (If) Playing all day, you will waste your valuable time. 要是整天玩,你就会浪费宝贵的时间。 ⑤作结果状语: He dropped the glass, breaking it into pieces. 他把杯子掉了,结果摔得粉碎。 ⑥作目的状语: He went swimming the other day. 几天前他去游泳了。 ⑦作让步状语: Though raining heavily, it cleared up very soon. 虽然雨下得很大,但不久天就晴了。 ⑧与逻辑主语构成独立主格: I waiting for the bus, a bird fell on my head. 我等汽车时,一只鸟落到我头上。 All the tickets having been sold out, they went away disappointedly. 所有的票已经卖光了,他们失望地离开了。 Time permitting, we'll do another two exercises. 如果时间允许,我们将做另两个练习。 有时也可用with (without) +名词(代词宾格)+分词形式 With the lights burning, he fell asleep. 他点着灯睡着了。 ⑨作独立成分: udging from(by) his appearance, he must be an actor. 从外表看,他一定是个演员。 Generally speaking, girls are more careful. 一般说来,女孩子更细心。
好了,就这么多了,打了两个多小时呢,累~~~
9. 急!!用所给动词的适当形式填空 八年级英语语法动词不定式的
1 to work
2 to play
3 not to catch
4 to arrive
5 not to go
6 to join
7 not to open
8 to drink
9 to go
10 to have
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