何时用不定式何时用分词与动名词
Ⅰ.动名词和不定式做主语的相同点
1.不定式短语和动名词做主语时，常常为了保持句子的平衡，用it来做形式主语，如：
It is not easy to learn English well.
It is no use asking him for help.
2.如果主语用了不定式,表语和宾语也要用不定式;主语用了动名词,表语和宾语也要用动名词,这在英语中称为对称性,如:
To see is to believe. = Seeing is believing. (眼见为实)
(85)It is better to stay home than _A__ out.
A. to go
B. going
C. go
D. gone
Ⅱ.动名词和不定式做主语的不同点
1.不定式做主语常表示具体的某一动作;表示泛指或一般的抽象的概念时,多用动名词,如:
(92)_B_ is a good form of exercise for both young and old.
A. The walk
B. Walking
C. To walk
D. Walk
2.在”There/It +be+ no use(good/help/need)”之后常用动名词做主语,而少用不定式,如:
It /There is no use crying over the split milk.
It /There is no help taking this medicine.
★但是如果该句型中用了for引出不定式的逻辑主语,就只能用不定式,如: (93) There is no good for us to do that exercise.
3.不定式可以和when, where, how, what, whether等连用,在句子中做主语,宾语和表语,而动名词则不能,如:
How to solve the problem is a hot potato.
Where to put the box seems hard to decide.
Whether to do it hasn’t been decided.
What to do next is up to you.
时态、语态及其基本用法
A. 不定式
1．不定式的时态、语态有三种形式：①一般式，如，to write / to be written ;②进行式，如，to be writing / to have been writing;③完成式，如，to have written / to have been written 。
2．基本用法
①不定式的一般式，表示的动作与谓语动词表示的动作同时发生，有时也发生在谓语动词表示的动作之后。如：
He seems to know this.(=It seems that he knows this.)
I hope to see you again.(=I hope that I’ll see you again.)
He doesn’t like to be laughed at. (=He doesn’t like that he is being laughed at.)
②不定式的进行式，表示不定式的动作正在进行，与谓语动词表示的动作同时发生。如：
When the mother went into the room, the boy pretended to be sleeping. (=… , the boy pretended that he was sleeping .)
I heard the English song being sung by him. (=I heard that the English song was being sung by him.)
③．不定式的完成式，表示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 so long. (= I am sorry that I kept you waiting so long. )
Having been well written, the book was translated into many languages. (=Be cause it had been well written, …)
B. 分词
1.只有现在分词才有时态和语态形式的变化。现在分词的时态、语态有两种形式：
①一般式，如，doing / being done;
②完成式，如，having done / having been done 。
2.基本用法
①现在分词的一般式，表示的动作与谓语动词表示的动作同时发生，或在谓语动词表示的动作之前发生。如：
The boys and girls went to school, singing and dancing all along the way .
They all jumped with joy ,hearing the good news.
The girl could not help crying ,being criticized in the public.
②现在分词的完成式，表示的动作在谓语动词表示的动作之前已发生，常用作时间状语或原因状语。如：
Having done the work very well ,he was praised by the teacher.
Having been shot by a bullet, the man fell down dead.
C．动名词
1.动名词的时态、语态有两种形式：①一般式，如，writing / being written ; ②完成式，如，having written / having been written 。
2.基本用法
①动名词的一般式不表示动作正在进行，但作具有状语性质的宾语时，动名词一般式表示的动作与谓语动词的动作同时发生。如：
The teacher is busy collecting the students’ exam papers.
②动名词的完成式在作具有状语性质的宾语时，表示的动作在谓语动词的动作之前已发生。如：
He was praised by the teacher for having done the work wonderfully.
He felt so sorry for not having been given the chance to work in the company.
三、不定式、分词、动名词的词性特征和句法功能
1．不定式既有动词的一些特征，又具有名词、形容词、和副词的句法功能，因此，不定式在句中作：主语、表语、宾语、宾语补足语、定语、状语、独立成分。2．分词即具有动词的一些特征，又具有形容词和副词的句法功能，因此，不定式在句中作：表语、宾语补足语、定语、状语、独立成分。
3．动名词，顾名思义，既有动词的一些特征，又具有名词的句法功能，因此，动名词在句中作：主语、表语、宾语、定语、同位语。
四、不定式、分词、动名词句法功能用法的比较
1. 从上面不定式、分词、动名词的词性特征和句法功能中，我们不难看出它们在句子中的作用既有较多的共性，又有稍微的差异：
a.相同的句法功能：①不定式、分词都能作：表语、定语、宾语补足语、状语、独立成分；②不定式、动名词都能作：主语、表语、宾语；③不定式、分词、动名词都能作：表语、定语。
b.不同的句法功能：不定式可作：同位语。如：
That was her desire, to go to America for further study after finishing middle school.
2.正确运用好不定式、分词、动名词
⑴．不定式、分词、动名词作表语时的比较。请看例句：
①My job is to teach the students English.
②My job is teaching the students English.
③My job is interesting.
④I am interested in English.
辨析：A. ①不定式与动名词作表语一般可以互换使用，在意义上没有多大差别，且其形式差异较大，很容易把握, 如上面例句的①②；②现在分词和动名词同形，在作表语时，学生不易识别。分辨方法有三：a）分词作表语说明主语的性质特征，回答how的问题；不定式和动名词作表语则说明主语的内容，回答what 或doing what 问题, 如：My job is interesting.(=How is my job?) ; My job is teaching ( to teach ) the students English. (=What is my job?); b）动名词具有名词的句法功能，也能做主语，我们不妨把句中的表语转换成主语，如果句子成立，则是动名词作表语，否则是现在分词作表语。如：My job is teaching the students English→Teaching the students English is my job.显然句子是成立的，原句中的
teaching是动名词；c）分词具有形容词的句法功能，那么，我们可以在作表语的分词前加very(extremely ,fairly ) 等副词，如果句子成立，则动词—ing 形式作表语的是现在分词。如上面例句：My job is interesting. 可改为：My job is very interesting. 显然句子是成立的，句中的interesting 是现在分词。
B．确定用现在分词还是用过去分词作表语的方法有：现在分词作表语多表示主语所具有的某种特征；过去分词作表语多表示主语所处的状态。情感动词的v.-ing 形式表示具有某种特征；情感动词的v.-ed形式多表示引起某种情感。一般地说，事物具有某种特征，而人才具有某种情感，因此，分词作表语的句式可归纳为：a）Sb.﹢be ﹢v-ed ; b）Sth. ﹢be﹢v-ing.
如：a. I am very excited ; b. The news is very exciting.
但有一个词例外，那就是missing 。例如“那个男孩不见了”，我们不能说“The boy is missed .”，而是“The boy is missing.”
⑵．不定式、分词、动名词作定语时的比较
A．作前置定语
现在分词、过去分词、动名词可以作前置定语，而不定式不能作前置定语。如：① a developing country , a developed country ; boiling water，boiled water ; ②building materials , a swimming pool ; the sleeping boy , the coming new year 。辨异的方法很简单：①现在分词具有主动、进行的特点，而过去分词则具有被动、完成的特点。例如，a developing country=a country which is developing (发展中国家)；boiling water=water which is boiling(正在滚开的水) ; a developed country=a country which has developed（发达国家）；boiled water=water which has been boiled(已滚开过的水)。②现在分词和动名词同形，但作前置定语时，动名词表示所修饰的名词的用途，例如，.building materials=materials for
building; a swimming pool=a pool for swimming ；而现在分词作前置定语时，表示所修饰的名词正在进行的动作，两者是逻辑上的主谓关系。例如，the sleeping boy=the boy who is sleeping ; the coming new year=the new year that is coming 。B．作后置定语
不定式、现在分词、过去分词都能作作后置定语，而动名词不作后置定语。先看例句：
①The problem to be discussed at the meeting is very important.
②The problem discussed discussed at the meeting is very important.
③The problem being discussed at the meeting is very important.
辨析：上面例句分别用不定式、现在分词、过去分词作后置定语，是因为它们存在不同的情况：不定式作定语，表示动作正要进行（未发生）；现在分词作定语，表示动作正在进行（正在发生）；过去分词作定语，表示动作已完成（已发生）。据此，我们可以把上面的例句还原为定语从句作定语的句子，这样学生就更容易理解：
①The problem to be discussed at the meeting is very important.=The problem ( which is ) to be discussed at the meeting is very important.
②The problem discussed at the meeting is very important.= The problem (which was ) discussed at the meeting is very important.
③The problem being discussed at the meeting is very important.= The problem (which is ) being discussed at the meeting is very important.
⑶．不定式、动名词做主语、宾语时的比较
A．做主语
例句：①To read English aloud in the morning is very practical.
②Reading English aloud in the morning is very practical .
为了保持句子的平衡，可用it作形式主语，所以上面例句可写成为：
→It is practical to read English aloud in the morning .
→It is practical reading English aloud in the morning .
B．作宾语
例句：①He wanted to help him out with his English.
②He doesn’t like being laughed at.
③I enjoy singing English songs .
辨析：①一般说来，不定式与动名词做主语可以互换，其意义没有多大的差别，但认真分析起来，它们之间还是有一些差异的：
a )不定式做主语，一般表示的是具体的情况,而动名词做主语，一般表示一般性的情况。如：
It is no use to ask him. He knows nothing about this matter.
It is no use asking him. He is foolish.
b. 同样，不定式做宾语，一般表示的是具体的情况,而动名词作宾语，一般表示的是习惯性的动作。如：
I like to sing and dance right now .I feel so pleased to know that our football team has won the match.
He has a good voice. He likes singing English songs.
②不定式作宾语时：
a) 通常用于及物动词want, hope, wish, need, promise, plan, pretend, prepare, fail, determine等之后。如：I want to be proud of you.
Einstein once refused to speak on the radio for $1,000 a minute.
b) 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，而将真正的宾语后置。如：
We think it necessary to study English well.
We feel our it our duty to help him.
c) 不定式一般不作介词的宾语，只有少数介词如，but, except等后面才行。此时不定式可以带to,如果介词but, except等的前面有实义动词do, does或did时，不定式不带to. 如：
In very cold winter weather a cold blooded creature has no choice but to lie down and sleep.
Yesterday afternoon he did nothing but lie in bed sleeping.
③有些及物动词后面只能接动名词作宾语，这样的及物动词不多，主要是：mind, admit, advise void, face, enjoy, finish, excuse, imagine, escape, include, keep, pardon, practice, risk, miss, stand(忍耐，忍受), deny, suggest, give up, put off, can’t help(禁不住), set about, prevent, prevent sb. from, object to（反对），insist on 等。如：
The boy insisted on going to Beijing with his father for a tour.
The girl didn’t mind being left alone at home.
④有些及物动词的宾语可用不定式，也有可用动名词，可分两种情况：
a)意义基本一样，如like, love, hate, begin, start, continue, cease, attempt, afford, prefer, delay, omit, neglect, propose, 等。如：
Marx started working(=to work) hard to improve his English.
The Einstein’s cold not afford to pay for ( =paying for) the education that young Albert needed.
但是，如果begin与start本身为进行式时，后面要接不定式，不接动名词。如：He is beginning to see his mistakes.
b)意义明显不同，主要有以下几个动词。
(a) remember(forget, regret )﹢to v. 表示不定式的动作尚未发生。
remember(forget, regret )﹢v.-ing 表示动名词的动作已发生。
试比较：
Please remember to close the door when you leave.
I regret to tell you that he will not come to the party.
I remember meeting her somewhere before.
(b) mean﹢to v. 意为：打算……; 想要……; 有……的意图
mean ﹢v.-ing 意为：意味着……; 意思是……; 就是……
试比较：
I didn’t mean to hurt your feeling.
Learning well English does not mean just working hard in a class.
(c) stop ﹢to v. 意为：停下来做谋事。
stop ﹢v.-ing 意为；停止做谋事。
试比较：
They stopped to talk .(= stopped what they were doing in order to talk.)
The students stopped talking when the teacher came into the classroom..
(d) try ﹢to v. 意为：设法…… ; 想法…… ; 试图……
try ﹢v.-ing 意为：试着…… ; 试试看
试比较：
Ever since he came to this school, he tried to work hard at all his subjects .
She tried reading, but that could not make her forget all her trouble.
(e) sth.want( need, require) ﹢to be v.-ed 意为：需要…… ; 该……
sth.want( need, require) ﹢v.-ing 意为：需要…… ; 该…… (动名词的主动形式表示被动的含义)
试比较：
My watch needed to be repaired.
The matter wants thinking over.(=to be thought over) .
Those young trees will require looking after(=to be looked after) .
⑷不定式、现在分词、过去分作宾语补足语时的比较
A．不定式作宾语补足语
不定式作宾补是比较常用的句式，如：
He asked me to help him with his English.
The teacher encouraged us to make greater progress.
但用不定式作宾补要注意下面两种情况：
a)不定式在感觉性动词，如see, hear, watch, notice, observe, feel, find 等动词和使役动词make, let, have 之后作宾补时，不定式的小品词to应省去。如：
I saw him go upstairs this morning .
The teacher makes me write a composition a week.
但上面的句子在改为被动语太时，to 不能省去。如：
→ He was seen to go upstairs this morning.
→ We are made to write a composition a week by the teacher.
b)某些及物动词，如agree,employ,lead,refuse,decide,promise,excuse,insist,prevent,suggest, arrange等
之后不能用不定式作其宾语补足语。例如句子“我爸爸希望我将来当工程师”如果译文是“ My farther hopes me to be an engineer in the future.”,那么就错了。正确的译文应是：“ My farther wishes (expects) me to be an engineer in the future.”；或“ My farther hopes that I will be an engineer in the future.”
B．现在分词、过去分词作宾语补足语
现在分词、过去分词作宾语补足语也是比较常用的句式，如：
I heard him singing English songs.
His English was poor .He could hardly make himself understood.
学习小结：不定式、现在分词、过去分词都能作宾补，正确使用它们的方法是：首先确定它们与逻辑主语即句子的宾语之间的关系，如果逻辑主语是它们动作的执行者，则用不定式或现在分词作宾补。不定式表示动作已完成，侧重工作的全过程，而现在分词表示动作正在进行；如果逻辑主语是它们动作的承受者，则应用过去分词作宾补。如：
I often heard him sing English songs.
I heard him singing English songs.
I often heard English songs sung by him.
⑸不定式、分词作状语时的比较
A.不定式可修饰动词和形容词，表示原因、目的和结果。
a)作修饰动词的原因状语。如：
The whole nation was in deep sorrow to learn of Premier Zhou Enlai’s death.
He laughed to think of his stupid son.
b)作修饰动词的目的状语。如：
He went to buy an English dictionary in the bookstore.
不定式作目的状语如果放在句子之前，则更为正式一些，语气也较重。如：
To be a teacher of the people, one must first be their pupil.
c)作修饰动词的结果状语。不定式做结果状语，表示一种没有预料到的情况或结果，须放在被修饰动词的后面，如：
He woke up to find that he was lying in the hospital.
有时为了进一步加强预料不到的语气，在表示结果的不定式前还可加only, 如：He went to see him only to find him out.
d) 作修饰表语形容词的状语。尤其要注意的是，此时作修饰表语形容词状语的不定式常用主动形式，表示被动的含义。如：
My chair is comfortable to sit on.
English is very difficult to learn well.
B．分词可作多种状语，用法比较活跃。
a)作时间状语（相当时间状语从句），如：
Having finished his homework, he went to bed. (=After he had finished his homework, ．．．)
(When) heated, ice will turn into water. (=When it is heated, ．．．)
b)作原因状语（相当原因状语从句），如：
Being a Party member, I should take the lead. (=As I am a Party member, ．．．) Greatly inspired by the teacher’s words, he made up his mind to work even harder. (=Because he was greatly inspired by the teacher’s words, ．．．)
c)作方式、伴随或附加说明状语，如：
Filled for the moment with extraordinary strength, he raised himself completely. He stood there waiting for a bus.
Here for the four very difficult years they worked every moment that they could spare, weighing and boiling and measuring and calculating and thinking.
d)作条件状语（相当条件状语从句），如：
Given some more time, she will do work even better. (= If she is given some more time, ．．．)
Playing all day, you will waste your valuable time. (=If you play all day, ．．．) e) 作结果状语，如：
He dropped the glass, breaking it into pieces.
有时在表示结果的现在分词之前还可加only,表示预料之中的情况，如：
He went to see him last night only finding him studying. He was always working hard!
f) 作程度状语，如：
The wind rose and it became freezing cold.
g)作目的状语，如：
Yesterday she went shopping with his classmates.
h) 作让步状语（相当于让步状语从句），如：
Though warned of the danger, the children went on skating on the thin ice.(=Though they were warned of the danger, ．．．)
要点提示：分词作状语，其逻辑主语就是句子的主语，如果分词表示的是主动、进行的动作，则用现在分词作状语；如果分词表示的是被动、完成的动作或状态，则用过去分词作状语，如：
Following the old man, he stepped into the room.
Followed by the old man, he stepped into the room.
Greatly interested ,I asked how he played these new works.
⑹不定式、现在分词作独立成分时的比较
A．不定式作独立成分，表示不定式独立于句子的其他成分，是英语表达的一种方式，不常用，如：
To tell you the truth, I am almost freezing.
To be honest, I don’t lik e being left alone at home.
B．现在分词作独立成分，用来表示说话人的态度或看问题的角度，如：Generally speaking, boys are physically stronger than girls.
Judging from his accent ,he must be an American.
动词不定式可以表示目的，也可以表示将来的情况
现在分词，是现在的情况，或者同时发生的情况
过去分词，同理啦，表示的是已经发生的事情的状态
在“go + -ing形式（运动名称）”和“ do some + -ing形式”这类固定短语中。
e.g We will go fishing if it doe sn’t rain tomorrow.
She did some shopping last Sunday.
位于would rather , had better , why (not)之后的不定式省略TO；
e.g You had better stay here until the police come.
Why not go to the movie with us?
need之后的非谓语动词形式的判定，主要考虑句子的主语同非谓语动词的关系：如句子的主语为非谓语动词的逻辑主语，用不定式；如句子的主语为非谓语动词的逻辑宾语，用-ing形式。
e.g We need to water the flowers this afternoon.
The flowers need watering this afternoon.
龙源期刊网 https://www.doczj.com/doc/fc2552003.html, 动名词与动词不定式用法例析 作者：朱小峰 来源：《初中生世界(初二年级)》2007年第01期 英语中某些动词后可跟动名词或动词不定式，有时两者意思差别不大，有时却截然不同。现分别例析如下： 一、两者意思相似，但稍有差别 1．start／begin doing sth．(或to do sth．) 析：start／begin doing sth．与start／begin to do sth．两者均表示“开始做某事”，一般可通用，但指开始一项长期或习惯的活动时，多用doing形式，例如： (1)I started／began learning(或to learn)English in 1992． 我学英语开始于1992年。 (2)How old were you when you first started playing football? 你第一次踢足球时多大? 2．like doing sth．(或to do sth) 析：like doing sth．与like to do sth．两者均表示“喜欢做某事”，有时可以通用，但表示一般性或抽象的多次性行为多用doing形式；表示某一特定场合具体的动作时，多用to do形式。类似此用法的动词还有hate(憎恨)，love(爱、喜欢)，prefer(更喜欢)等，例如： (1)For example，Lily likes to dance(或dancing)，but I like to sing(或singing)． 例如，莉莉喜欢跳舞，但我喜欢唱歌。 (2)He likes(hates)swimming，but he doesn’t like(hate)to swim today． 他喜欢(讨厌)游泳，但他今天不喜欢(讨厌)游泳。
不定式和动名词做主语的区别 不定式和动名词都可在句子中作主语，一般说来, 有下面几点须给予注意： (1)不定式一般表示具体的、特定的行为，通常表示一种意愿、目的或者未完成的事情。；而-ing分词一般表示抽象的、一般的行为通常表示已经知道的事实或者经验。 如： To complete the program needs much effort. 完成这项计划需要很大的努力。 Riding a bike can make a man smart. 骑单车能使一个人敏捷。 (2)在疑问句中，只能用动名词的复合结构作主语。如： Is his speaking reasonable? 她的说话有道理吗？ (3)在某些句型中通常要用动名词短语作主语。如：It is no use doing…/ It is no goo d doing…/ It is useless doing…/ It is worthwhil e doing…如： It is no use talking your trouble to a man like him. 跟他那样的人谈你的烦恼没有用。 (4)一般说来，作主语和表语的非谓语动词形式应一致，即：或同时为不定式，或同时为-ing分词。如： Seeing is believing. 眼见为实(from https://www.doczj.com/doc/fc2552003.html,)。 但是，在现代英语中，当表语用来说明主语的特定意义或具体内容时，主语和表语的非谓语动词的形式可以不一致，即，主语用动名词，而表语用动词不定式。如：Waving your hand is to say “Good-bye”. 挥手就是说“再见”。 Nodding your head is to say “Yes”. 点头就是说“对，是的”。
接不定式和动名词含义不同的动词 1. remember(记得)，forget(忘记)，regret(后悔)后接不定式指该不定式所表示的动作还未发生，后接动名词(有时可用完成式)，则指该动名词所表示的动作已经发生。比较。如：Remember to post the letter. 记住把这封信寄了。(“寄信”未发生) I remember posting the letter. 我记得寄了那封信。(“寄信”已发生) He forgot to pay me the money. 他忘记要给我付钱了。(“付钱”未发生) He forgot paying me the money. 他忘记曾给我付过钱。(“付钱”发生了) 2. try 后接不定式表示设法做某事，接动名词表示做某事试试(看有什么效果)。如： I’ll try to come tomorrow. 我明天设法来。 Let’s try knocking at the back door. 咱们敲敲后门试试。 3. mean 后接不定式表示打算(想要)做某事，接动名词表示意味着(要)做某事。如： He means to be a teacher. 他打算当老师。 He did not mean to hurt you. 他不是有意要伤害你。 This illness will mean going to hospital. 得了这种病就意味着要住院。 4. stop 后接动名词表示停止做某事，接不定式表示停下正在做的事去做另一事。如： He stopped speaking, and there was not a sound in the room. 他停止讲话，房里一点声音也没有了。 He stopped to listen, but there was no more sound. 他停下来听，但再也没有听到什么声音。 【注】后接不定式时，不定式不是宾语，而是目的状语。 5. can’t help后接动名词表示禁不住去做某事，接不定式表示不能帮助做某事。如： He couldn’t help crying when he heard the news. 他听到这个消息时禁不住哭了。 The medicine can’t help to get rid of your cold. 这药不能帮你治好感冒。 6. go on 后接不定式表示做完某事后接着做另一事，接动名词表示继续做正在做的事。如： You oughtn’t to go on living this way. 你不应该再这样生活下去了。 Go on to do the other exercises after you have finished this one. 做完这个练习后, 请接着做其他的练习。 【注】也人认为go on doing sth中的doing是现在分词而不是动名词。
动词不定式、动名词的用法和区别 动词不定式：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： To mast a language is not an easy thing. / To teach English is my favorite. 动词不定式作主语时可以放在后面，而用it 作形式主语放在原主语的位置上。 It's very kind of you to have given us much help. 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, begin, want, wish, like, forget, learn, ask. I like to help others if I can. 3. 动词不定式作宾语补语。 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： What I should do is to finish the task soon. / The most urgent thing is to find the boy immediately. 5. 动词不定式作定语： There are many ways to solve the problem. / I have something important to tell you. 6. 不定式作状语： We went to the hospital to see our teacher. / She is making a test to get a kind of useful medicine from a Tibet flower. 动词不定式的否定形式：not + to + 动词原形 The teacher told us not to swim in that river. 老师告诉我们不要在那条河里游泳。 It's unfair not to tell us. 没告诉我们真是不公平。 带疑问词的不定式： 疑问词who, what,which,when, where, how, why 可以加在不定式的前面，构成不定式短语，使含义更加具体。Where to go is not known yet. I don't know when to begin.。 Can you tell me where to get the battery. Do you know how to get to the station. 带逻辑主语的不定式： 动词不定式可以带有自己的逻辑主语，构成方法是：for + 逻辑主语+ 不定式。 注意：逻辑主语用宾格形式，for 本身无实际意义，它只表明后面的主语从逻辑上分析是不定式的主语。 It's necessary for us to help each other. / There are much work for me to finish, 动词不定式的被动形式：表示不定式动词同所修饰的名词是被动关系。 He is the man to be examined. 他是受检查的人。/ There are much work to be done. 有好多工作要做。 ●动名词 动名词是由动词原形+ ing 构成，同现在分词形式一样，在句中可作主语，宾语，表语和定语。 1) 动名词作主语： Talking like that is not polite. / Learning from others is important . / Putting on more clothes is not so good . （注：动名词可以象动词不定式一样，用it作形式主语，而把动名词写在后面做真正的主语。）It's no use waiting here, let's go home. / It's very difficult climbing this mountain. 2) 动名词作表语 The nurse's job is looking after the patients. 3)动名词作宾语 有些动词须用动名词来作宾语,它们是begin, mind, suggest, finish, stop, need, enjoy, miss, keep. Please stop smoking in the house. / I like reading in the forest. / Do you mind my opening the windows? 4）动名词作定语 She is studying in the reading room. / He slept in the sleeping bag. （动名词的否定形式：not + 动名词） He pretend not knowing it at all. 他假装全然不知。/ We considered not doing it now. 我们考虑现在不做这件事。 动名词的被动形式：当动名词和它的逻辑主语是被动关系时，用动名词的被动形式来表示。）His being looked down upon made him sick. / I can't really stand being treated like that.
初中动词不定式和动名词用法总结 一、接不定式（而不接动名词）作宾语的常用动词 afford to do sth. 负担得起做某事agree to do sth. 同意做某事 ask to do sth. 要求做某事beg to do sth. 请求做某事 choose to do sth. 决定做某事decide to do sth. 决定做某事 help to do sth. 帮助做某事hope to do sth. 希望做某事 manage to do sth. 设法做某事offer to do sth. 主动提出做某事 prepare to do sth. 准备做某事pretend to do sth. 假装做某事 refuse to do sth. 拒绝做某事want to do sth. 想要做某事 fail to do sth. 未能做某事learn to do sth. 学习做某事 happen to do sth. 碰巧做某事expect to do sth. 期待做某事 plan to do sth. 计划做某事promise to do sth. 答应做某事 wish to do sth. 希望做某事 二、接不定式作宾补的常用动词 advise sb. to do sth. 建议某人做某事allow sb. to do sth. 允许某人做某事ask sb. to do sth. 请（叫）某人做某事get sb. to do sth. 使（要）某人做某事beg sb. to do sth. 请求某人做某事cause sb. to do sth. 导致某人做某事encourage sb. to do sth. 鼓励某人做某事help sb. to do sth. 帮助某人做某事like sb. to do sth. 喜欢某人做某事expect sb. to do sth. 期望某人做某事wish sb. to do sth. 希望某人做某事force sb. to do sth. 强迫某人做某事 tell sb. to do sth. 告诉某人做某事train sb. to do sth. 训练某人做某事teach sb. to do sth. 教某人做某事trouble sb. to do sth. 麻烦某人做某事want sb. to do sth. 想要某人做某事warn sb. to do sth. 警告某人做某事hate sb. to do sth. 讨厌某人做某事invite sb. to do sth. 邀请某人做某事leave sb. to do sth. 留下某人做某事mean sb. to do sth. 打算要某人做某事need sb. to do sth. 需要某人做某事order sb. to do sth.命令某人做某事permit sb. to do sth. 允许某人做某事persuade sb. to do sth. 说服某人做某事prefer sb. to do sth. 宁愿某人做某事request sb. to do sth. 要求某人做某事remind sb. to do sth. 提醒某人做某事trouble sb. to do sth. 麻烦某人做某事warn sb. to do sth. 警告某人做某事 三、接动名词（不接不定式）作宾语的常用动词 advise doing sth. 建议做某事allow doing sth. 允许做某事 avoid doing sth. 避免做某事consider doing sth. 考虑做某事 discuss doing sth. 讨论做某事dislike doing sth. 不喜欢做某事 enjoy doing sth. 喜爱做某事excuse doing sth. 原谅做某事 finish doing sth. 完成做某事give up doing sth. 放弃做某事 imagine doing sth. 想象做某事keep doing sth. 保持做某事 mention doing sth. 提及做某事mind doing sth. 介意做某事 miss doing sth. 错过做某事practice doing sth. 练习做某事 prevent doing sth. 阻止做某事put off doing sth. 推迟做某事 stop doing sth. 停止做某事suggest doing sth. 建议做某事
动名词作主语和动词不定式做主语的区别? 动词不定式与动名词的区别：）to+V 放句首为动词不定式，用法与V+ing差不多，多用于后面所说的事情还没有发生。例：To be a author is my dream. V+ing 放句首是动名词，其相当于名词，例：Doing lots of exercise is good for health. 一般来讲，to+ v. 表主动，表将来，表一次行动作。-ing 表主动，表进行。动词不定式与动名词的一些用法：）不定式与动名词都可以在句中作主语、宾语、表语和定语,但用法不尽相同。1．作主语一般情况下,不定式与动名词作主语可以互换,也常常可以用it充当形式主语,而把不定式和动名词放在句子的后半部分。但二者也有区别,不定式常常指某次具体的、将要发生的行为;而动名词则表示一般的、抽象的行为。例如: To save money now is not easy. 现在攒钱不容易。Saving money is a good habit. 攒钱是个好习惯。2．作定语不定式多为后置定语,动名词多为前置定语;不定式多表示将来的动作,动名词只能表示事物的属性、用途等。例如: He is looking for a room to live in.他正在找一间房子去住。Take these sleeping pills and you\'ll sleep better. 吃了这种安眠药,你会睡得更好。3．作宾语：有些动词后只能跟不定式作宾语,不能跟动名词作宾语;有些动词后常跟动名词作宾语,不能跟不定式作宾语;有些动词后跟不定式和动名词作宾语皆可, 1、动名词做主语往往表示普通的、一般的行为，不定式做主语常表示某次具体的行为。例 如：Collecting inform ation about children’s health is his job. 收集有关儿童健康的信息是他的工作。It’s necessary to discuss the problem with an experienced teacher. 与一位有经验的老师讨论这个问题是有必要的。2、常用不定式做主语的句型有：（1）It’s difficult (important, necessary) for sb. to do （2）It’s kind (good, friendly, polite, careless, rude, cruel, clever, foolish, brave) of sb. to do. 3、常用动名词做主语的句型有：It’s no good (use, fun) doing. It’s (a) waste of time one’s doing.另:1)动名词作主语通常表示抽象动作；而不定式作主语表示具体动作。Smoking is prohibited(禁止)here．这里禁止抽烟。(抽象) It is not very good for you to smoke so much．你抽这么多烟对你身体很不好。(具体) (2)动名词作主语时，通常用以表示一件已知的事或经验。 不定式短语通常用来表示一件未完成的事或目的。Climbing mountains is interesting．爬山很有趣。(经验) Driving a car during the rush hour is tiring．在高峰时刻开车令人厌烦。(经验) (3）不定式做主语，一般用it当形式主语，把作主语的不定式短语后置。It took me only five minutes to finish the job. Ⅰ.动名词和不定式做主语的相同点 1.不定式短语和动名词做主语时，常常为了保持句子的平衡，用it来做形式主语，如： It is not easy to learn English well. It is no use asking him for help. 2.如果主语用了不定式,表语和宾语也要用不定式;主语用了动名词,表语和宾语也要用动名词,这在英语中称为对称性,如: To see is to believe. = Seeing is believing. (眼见为实) It is better to stay home than _A__ out. A. to go B. going C. go D. gone
动名词作主语和动词不定式做主语的区别？ 动词不定式与动名词的区别：）to+V放句首为动词不定式，用法与V+ing差不多，多用于 后面所说的事情还没有发生。例：To be a author is my dream. V+i ng 放句首是动名词，其 相当于名词，例：Doi ng lots of exercise is good for health. 一般来讲，to+ v.表主动，表 将来，表一次行动作。-ing表主动，表进行。动词不定式与动名词的一些用法：）不定 式与动名词都可以在句中作主语、宾语、表语和定语，但用法不尽相同。 1 ?作主语一般情 况下，不定式与动名词作主语可以互换，也常常可以用it充当形式主语，而把不定式和动名词放在句子的后半部分。但二者也有区别，不定式常常指某次具体的、将要发生的行为；而动名 词则表示一般的、抽象的行为。例如：To save money now is not easy. 现在攒钱不容易。 Savi ng mo ney is a good habit. 攒钱是个好习惯。 2 .作定语不定式多为后置定语，动名词 多为前置定语；不定式多表示将来的动作，动名词只能表示事物的属性、用途等。例如：He is look ing for a room to live in. 他正在找一间房子去住。Take these sleep ing pills and you\'ll sleep better.吃了这种安眠药，你会睡得更好。3 .作宾语：有些动词后只能跟不定式作宾语,不能跟动名词作宾语；有些动词后常跟动名词作宾语，不能跟不定式作宾语；有些动词后跟不定式和动名词作宾语皆可， 1、动名词做主语往往表示普通的、一般的行为，不定式做主语常表示某次具体的行为。例女口： Collect ing in formation about childre n ' s health is his jc收集有关儿童健康的信息是他的工作。It ' s necessry to discuss the problem with an experieneed teacher. 与一位有经验的老师讨论这个问题是有必要的。2、常用不定式做主语的句型有： （1） It ' s difficult （important，necessary） for sb. to do （2）It ' s kind （good，friendly，polite， careless，rude，cruel，clever，foolish，brave） of sb. to do. 3 、常用动名词做主语的句型 有: It ' s no good （use，fun） doing. It ' s （a） waste of time one 另：1）s动o名词作主语通常表示抽象动作；而不定式作主语表示具体动作。Smoking is prohibited（禁止）here .这里禁止抽烟。（抽象）It is not very good for you to smoke so much .你抽这么多烟对你身体很不好。（具体）（2）动名词作主语时，通常用以表示一件已知的事或经验。 不定式短语通常用来表示一件未完成的事或目的。Climb ing mou ntai ns is interesting .爬山很有趣。（经验）Driving a car during the rush hour is tiring .在高峰时刻开车令人厌烦。（经验）（3 ）不定式做主语，一般用it当形式主语，把作主语的不定式短语后置。It took me only five minu tes to finish the job. I .动名词和不定式做主语的相同点 1. 不定式短语和动名词做主语时，常常为了保持句子的平衡，用it来做形式主语，如： It is not easy to learn English well. It is no use asking him for help. 2. 如果主语用了不定式，表语和宾语也要用不定式；主语用了动名词，表语和宾语也要用动名词，这在英语中称为对称性，如：
初中英语动词不定式及动名词总结（八年级） 一、后跟动词不定式结构 1.agree to do sth 同意做… 2.decide to do sth 决定做… 3.hope to do sth 希望… 4.need to do sth需要… 5.offer to do sth 主动… 6.plan to do sth计划… 7.can’t wait to do 迫不及待…8.continue to do sth继续… 9.try (one’s best) to do 尽力…https://www.doczj.com/doc/fc2552003.html,ed to do sth过去常常… 11.feel lucky to do sth 做某事很幸运12.ask sb to do sth叫某人做 13.want （sb）to do sth 想要（某人）…would like 14.encourage sb to do sth鼓励某人做… 15.allow sb to do sth 允许某人做… 16.remind sb to do sth 提醒某人做… 17.send sb to do sth 派某人做… 18.It’s +形+for sb +to do sth 做某事对某人来说怎么样 19.It takes sb some time to do sth 做某事花费某人多长时间 20. too+形+to do 太…而不能… 21. 形+enough + to do 足够…可以做… 22.不定式可以作表语 My job\dream is to do 23.不定式可以作定语a good way\place to do sth 做某事的好方法 24. 不定式可以表目的 To get good grades, I must study hard 二、后跟动名词形式
动词不定式语法单选题 【真题在线】 1. Do let your mother know all the truth. She appears ________ everything. A. to tell B. to be told C. to be telling D. to have been told 2. I feel it is your husband who ________ for the spoiled child. A. is to blame B. is going to blame C. is to be blamed D. should blame 3. In order to gain a bigger share in the international market, many state-run companies are striving ________ their products more competitive. A. to make B. making C. to have made D. having made 4. An army spokesman stressed that all the soldiers had been ordered ________ clear warnings before firing any shots. A. to issue B. being issued C. to have issued D. to be issued 5. It was unbelievable that the fans waited outside the gym for three hours just ________ a look at the sports stars. A. had B. having C. to have D. have 6. Energy drinks are not allowed ________ in Australia but are brought in from New Zealand. A. to make B. to be made C. to have been made D. to be making 7. There is nothing more I can try ________ you to stay, so I wish you good luck. A. being persuaded B. persuading C. to be persuaded D. to persuade 8. If there's a lot of work ________, I'm happy to just keep on until it is finished. A. to do B. to be doing C. done D. doing 9. David threatened ________ his neighbor to the police if the damages were not paid. A. to be reported B. reporting C. to report D. having reported 10. Thai is the only way we can imagine ________ the overuse of water in students' bathrooms. A. reducing B. to reduce C. reduced D. reduce 11. Today we have chat rooms, text messaging, emailing… but w e seem ________ the art of communicating face-to-face. A. losing B. to be losing C. to be lost D. having lost 12. The students are looking forward to having an opportunity ________ society for real-life experience. A. explore B. to explore C. exploring D. explored 【随堂检测】 (A)
动词不定式和动名词是英语非谓语动词的两个重要部分 一、作主语 1、不定式作主语：动词不定式可直接用作主语, 句子的谓语动词常用单数。 To get there by bike will take us half an hour. 对于主语较长的不定式，可以用it 作形式主语。例如： It's our duty to take good care of the old.How long did it take you to finish the work It is difficult for us to finish writing the composition in a quarter of an hour. It seemed impossible to save money.It's kind of you to help me with my English. 2、动名词作主语：动名词也可直接用作主语，或者用it 作形式主语。例如： Learning without practice is no good.It's no good reading in dim light.It's no use sitting here waiting.It's dangerous swimming in the sea in windy days.There is no saying what will happen next. 3、动词不定式和动名词作主语的区别 (1)不定式作主语经常表示具体动作，或者表示将要进行的动作。而动名词作主语经常表示 抽象的一般性的动作。例如：It's no good for you to eat so much fat. ( 有具体的人for you) It's no good eating too much fat. ( 泛指 ) (2) 不定式的逻辑主语常用 of, for 表示；动名词逻辑主语则常用物主代词、名词、代词表示。例如：It is stupid of you to write down everything the teacher says. (of you) It's no use your pretending that you didn't know the rules. (your) The doctor suggested them having their health check-up once a year. 二、作宾语 1、不定式作宾语 (1) 以下动词后 , 一般只用不定式作宾语 .如 :agree, attempt ， apply， ask, aim, arrange, beg ，choose, decide, demand, expect, fail , help, hope, lean, long, manage, offer, plan, prepare, pretend, promise, refuse, wish afford 等。 I decided to ask for my money back. I decided that I would ask for my money back. When our visit to the farm was over, we expected to start back on foot. When our visit to the farm was over, we expected that we would start back on foot. (2)不定式可先用 it 做形式宾语。 2、动名词作宾语 (1)以下动词后 , 一般只用动名词作宾语 , 如 :admit, appreciate, consider, delay, enjoy, finish, keep, imagine, mind, miss, practise, resist, risk, save, suggest, don't mind, give up, insist, on, put off 等。 I suggest spending our summer vacation in a seaside town. You must give up smoking, for it does too much harm to your health. (2)介词后只能接动名词做宾语 I should go to attend the birthday celebration instead of staying at home. What about inviting Li Jun to make a speech (3)少数特殊结构中只用动名词做宾语。它们可以看作是省略的介词的形式。例如： have difficulty prevent/stop (in) doing sth. have ? (from) doing sth. no trouble (in) doing sth.lose no ti me (in) there is no use (in) doing sth. doing sth. 3、不定式与动名词做宾语的区别 (1)动词后是接不定式还是动名词作宾语，主要是根据使用习惯。有些动词后一般只接不定
不定式、动名词专项练习 一、单项选择： 1.Would you please tell me _______ next? A.A. how to do B. what to do C. what do I do D. how I should do 2.The girl wasn't _______ to lift that bookcase. A.A. too strong B. enough strong C. strong enough D. so strong 3.For a time his grandmother found _______ accept his new idea. A.A. hard B. it hard C. it hard to D. it is hard to 4.As she has never been there before, I'll have someone _______ her the way. A.A. show B. to show C. showing D. showed 5.You _______ drive slowly. The roads are wet. A.A. had rather B. would rather C. had better D. would better 6.Nothing can make the brave soldier _______ his country. A.turn against B. to turn against C. to turn to D. turn to 7.In the old days it was difficult for the poor _______ a job. A.A. find B. to find C. look D. to look for 8.When learning a foreign language, try our best _______ the spirit of it. A.A. master B. hold C. take hold of D. to master 9.It was foolish _______ his car unlocked. A.for him to leave B. of him to leave C. for him leave D. him to leave 10.Remember _______ the newspaper when you have finished it. A. putting back B. put back C. to put back D. will put back 11.Napoleon spoke so loudly as to _______ in front of his soldiers. A. hear B. be heard C. listen D. be listened to 12.Television and radio _______ to know what is going on all over the world. A. made it possible of us B. have made us possible C. have made it possible for us D. have made it be possible for us 13..I have enjoyed my visit here. I'll be very sorry _______. A. for leaving B. to leave C. if leaving D. to have left 14.I don't see how I could possible manage _______ the work without _______. A. to finish; helping B. to finish; being helped C. finishing; helping D. finishing; being helped 15.We all think it most foolish _______ this mistake. A. for you making B. of you to make C. you to make D. for you to make 16.Because of air pollution being greatly reduced, this city is still _______. A. a good place which to be lived in B. a good place to live C. a good place to live in D. a good place to live for 17.— You were lost on your way to the lake, weren't you? —Yes, we were and had to stop _______ the way.
不定式与动名词专题练习 1．I don't allow _____ in my drawing room. I don't allow my family _____ at all. A. smoking；to smoke B. to smoke；smoking C. to smoke；to smoke D. smoking；smoking 选A。allow要用动名词做宾语，用动词不定式作宾语补足语。 2．Your clothes need _____. A. washed B. to be washed C. to wash D. being washing 选B。need to be done相当于need doing, 表示被动语态。 3．This bike is not worthy _____. A. to be repaired B. of repairing C. to repair D. repairing 选A。be worthy to be done的意思是"某事值得被做"。 4．_____ provides us with essential nutrients, while _____ provides us with oxygen. A. To eat; breathing B. Ea ting; to breathe C. Eating; breathing D. Eaten; breathed 选C。while是并列连词，连接两个并列的动名词结构。 5．Rebecca was unhappy for _____ the first chance to go abroad. A. not having been given B. not having given C. not giving D. having been given 选A。not having been done是动名词的完成被动式的否定形式，表示动作发生在谓语动词之前，而且是被动的。 6．_____ is better to love than _____. A. That; to be loved B. That; be love C. It; be loved D. It; to be loved 选D。It在句中作形式主语；than连接两个并列的动词不定式。 7．I've got the loaf；now I'm looking for a bread knife _____. A. cutting it by B. cutting it with C. to cut it with D. to cut it by 选C。动词不定式作后置定语；with表示工具；by表示手段。 8．I'm glad _____ by him yesterday. A. not be seen B. to not have been seen C. not to have been seen D. not to have seen 选C。not to have been done是动词不定式的完成被动式的否定形式，表示动作发生在谓语动词之前。 9．-What do you think about English? -It's a difficult language _____. A. speaking B. to be spoken C. to speak D. spoken 选C。可以在不定式前加上for sb.作为逻辑主语，因此是主动的。 10．He would rather stay at home than _____ out with you. A. go B. to go C. going D. goes