动名词作主语、宾语和表语
在句子中充当除谓语以外的句子成分的动词形式叫做非谓语动词。非谓语动词分为三种形式:不定式，动名词，和分词(分词包括现在分词和过去分词)。
不定式
时态\语态主动被动
一般式to do to be done
完成式 to have done to have been done
动名词
时态\语态主动被动
一般式doing being done
完成式having done having been done
分词
时态\语态主动被动
一般式doing being done
完成式having done having been done
否定形式： not +不定式，not + 动名词，not + 现在分词
作主语
Fighting broke out between the South and the North.
南方与北方开战了。
作宾语
动词后加动名词doing作宾语 V. + doing sth
admit 承认appreciate 感激,赞赏avoid 避免
complete 完成 consider 认为 delay 耽误 deny 否认 detest 讨厌 endure 忍受enjoy 喜欢escape 逃脱 prevent 阻止
fancy 想象finish 完成 imagine 想象 mind 介意 miss 想念postpone 推迟practise 训练recall 回忆resent 讨厌resist 抵抗 resume 继续 risk 冒险
suggest 建议face 面对include 包括stand 忍受understand 理解 forgive 宽恕 keep 继续
举例：
Would you mind turning down your radio a little, please?
The squirrel was lucky that it just missed being caught.
词组后接doing
admit to prefer…to be used to lead to devote oneself to object to stick to be busy look forward to to为介词）
no good, no use, It's worth…, as well as,
can't help, It's no use /good be tired of
be fond of be capable of be afraid of
be proud of think of / about hold off
put off keep on insist on count on / upon
set about be successful in good at take up
give up burst out prevent … from…
作表语
Her job is washing，cleaning and taking care of the children.
worth 的用法
worth，worthy，worth-while都为adj. 意为"值得"。
1. worth： be worth + n. 当名词为金钱时，表示"……值得……"
be worth doing sth. "……某事值得被做"
The question is not worth discussing again and again.
2. worthy：be worthy of +n. 当名词为抽象名词时表示"……值得……"
be worthy to be done "某事值得被做"
The question is not worthy to be discussed againand again.
3. worth-while： be worth-while to do sth "值得做某事"
worth while： It is worth while doing sth
It is worth while sb to do sth.
典型例题
It is not ____ to discuss the question again and again.
worth B.worthy C.worth-while D.worth while
答案C. 由worth的用法可知，此句只适合词组be worth-while to do sth.。因此选C。
《动名词作表语定语的情况》进阶练习 一、单项选择 1. Last night we watched a funny show. And people couldn’t help _____ again and again. A. laughing B. to laugh C. laugh 2. —Dad, why must I stop ______ computer games? —For your health, my boy. A. play B. to play C. to playing D. playing 3. —You aren’t a student, are you? —_____ , don’t you remember _____ me in the classroom ten minutes ago？ A. No, seeing B. Yes, seeing C. No, to see D. Yes, to see 二、句型转换 4. Thank you for your help.（改为同义句） Thank you for _________ __________. 5. It’s good to travel all over the world.（改为同义句） Travelling ______ the world ______ good.
参考答案 一、1. A 2. D 3. B 二、4. helping me 5. around，is 解析 1. 句意为：昨天晚上我们看了一个有趣的节目。人们情不自禁地一次又一次大笑。can't help doing意为“情不自禁做某事”，为固定搭配。故选A。 2. 句意：——爸爸，我为什么必须停止玩电脑游戏？——为了你的健康，我的孩子。stop to do停下来去做另一件事，stop doing停止正在做的事。根据句意，故选D。 3. 句意为：——你不是学生，对吗？——不对，你难道不记得10分钟前在教室见过我吗？回答否定的反义疑问句时，yes表示否定前面的事实，no表示肯定前面的事实。remember 有两种用法，即remember doing sth(记得做过某事)和remember to do sth(记得去做某事),根据句意，故选B。 4. for是介词，后可跟动名词作宾语。故填helping me。 5. it作形式主语的句子可转变成动名词作主语的句子，动名词作主语，谓语用单数形式。all over the world相当于around the world。故填around，is。
动名词做主语和宾语 The -ing form as the Subject and Object I 自主学习 Lead-in 语法导入 动词的-ing 形式可分为动名词和现在分词两类。作为动名词，它有名词的基本性质，因此动名词可以在句子中充当主语、宾语、表语，宾语补足语和定语。本单元学习动名词做主语和宾语。 1.动名词做主语（动名词做主语往往表示经常性、习惯性的动作。此时，谓语动词用单数形式） 动名词做主语有三种形式： ①动名词在句首直接做主语 ②It 在句首做形式主语，而动名词短语在后面做真正的逻辑上的主语 ③% ④There be + no + 动名词 1）形式一动名词在句首直接做主语。 (sing) is his hobby.唱歌是他的爱好。 (play) computer games is a wate of time.玩电子游戏是浪费时间。 (drive) fast is dangerous.驾驶超速很危险。 【归纳总结】动名词做主语，谓语动词用单数 It 在句首做形式主语，而动名词在后面做真正的逻辑上的主语。 It is no use _______(wait ) here．在这儿等是没用 it is worth/worthwhile_______(see) the movie. 用下划线画出下面句子的形式主语和真正的主语 " ①It was a waste of time reading that book. ②It is dangerous standing in the middle of the street. Is it worthwhile quarrelling with her 3）There be + no + 动名词。 There was no knowing what he could do. There is no (joke) about such matters.. 动名词做宾语的六种情形： 作及物动词宾语 it 作形式宾语，代替动名词作 作动词词组的宾语 / 介词的宾语
高中英语语法之动名词 一、含义 动名词兼有动词和名词特征的非谓语动词形式。基本形式为v-ing, 动名词具有名词的性质，因此在句中可以做主语、表语、宾语、定语等。 动名词有时态和语态的变化。 动名词的时态和语态的基本形式：（以write为例） 注意：动名词的否定形式是：not writing 二、动名词的基本用法 １．用作主语---常表抽象，或者泛指习惯性的动作。 Smoking is bad for your health. Playing with fire is dangerous. Swimming is her favorite sport. 游泳是她最喜欢的体育运动。 Learning is important to modern life. 学习对现代生活很重要。 注意： ①不定式也可以做主语。不定式与动名词作主语的区别： 不定式作主语时经常表示具体的、 ．．．动作，而动名词 ．．．．一次性 作主语时经常表示抽象动作或习惯性动作。
Getting up early is a good habit. To get up early this morning made me sleepy. ②动名词作主语，有时用it作形式主语，把动名词置于句末。 It is no use/ good doing...(做。。。没有用); It is fun doing... (做。。。很有趣); It is a waste of time doing... (做。。。是浪费时间) 等句型中。 例如：It’s no use crying over spilt milk.(覆水难收） It is fun playing with children. 和孩子们一起玩真好。 It is a waste of time persuading such a person to join us. 说服这样一个人加入我们当中来是浪费时间。 2. 作宾语 ①作某些及物动词的宾语 常见的动词有：advise，avoid，delay，escape，excuse，enjoy，consider，finish，deny，fancy，keep，mind（在乎）postpone，pardon，practise，suggest，imagine等。 need，want，require后接动名词，表示被动意义。 如：Would you mind opening the door？请你把门打开好吗？ Fancy meeting you here. 真想不到在这里遇见你。 ②作介词的宾语 He left without saying good-bye to us. 他没有和我们道别就离开了。 On arriving at the airport，I saw my mother standing in the
过去分词作定语，表语专题练习 Ⅰ.分析下列划线部分在句中做什么成分（过去分词做定语，表语还是表示被动？） 1. The excited children are opening their Christmas presents. 2. This supermarket is now closed. 3. The blackboard was broken by Tom. 4. She had a worried look on her face because she failed the exam. 5. He looked interested in the idea I put forward. 6. The machine produced last year(= which were produced last year) are very expensive. Ⅱ. Fill the form with proper form.适当形式填空 1. The animal and plants that they found there were ___________ (astonish) 2. I was___________(astonish) to learn that his long lost child had been found. 3. The ___________ news made us ___________.(disappoint) 4. The ___________ mother went to visit Einstein. (puzzle) 5. Madame Curie found husband’s death ___________ .(shock) 6. I saw the boy very ___________ (excite) 7. _________(encourage), the girl was determined to study harder and make greater progress. 8. Be brave. You look like a___________ bird (frighten)（惊弓之鸟） 9. The fierce lion looks __________(frighten). Keep away from its cage or it will attack you. 10. The look on her face was very ___________ (confuse) . Ⅲ. Fill the form with V-ed 1. The book ___________________ (一本农民写的书) is very popular. 2. The building _____________(去年建的楼房) now collapsed in the Wenchuan earthquake. 3. The problem ____________________(在昨天会议上讨论的) was very difficult to solve. 4. The window _________________________(被那个顽皮男孩打破的) is being repaired 5. The children ________________________(昨天在医院检查的) were seriously ill. 6. The people _________________(暴露在阳光下的) got sunburnt. 7. The boy __________________________(受到老师严厉惩罚的) is now a college student. 8. The water ___________________________(送到他家的水) carried disease. 9. The English today is quite different from the English ______________(300年前所说的). 10. Most of the artists_________________ (被邀请去参加聚会的) were from South Africa. 11. The students ___________________(受到老师鼓舞的)worked harder than ever before. Ⅳ. 基础单选题 1. Mary is a new nurse and her job is to take care of the _______soldiers. A. wound B. wounded C. wounding D. being wounded 2. Lily seems very much___________ in the magazine, but I think it’s too expensive. A. interested B. interesting C. to interest D. to be interesting 3. All the passengers should remain___________ when the plane is making a landing. A. seat B. seating C. to be seating D. seated 4. After her journey from Australia, Sophie Armstrong returned home, ___________ A. being exhausted B. exhausting C. exhausted D. having exhausted 5._____ their new album on time, the two famous singers worked far into the night every day. A. Release B. Released C. To release D. Having released 6. The meeting________ next Thursday mainly aims to deal with the problems related to teena
动名词（Gerund） 动名词是动词的一种非谓语形式，由动词+ ing构成，否定形式为not doing，兼有动词的特征和名词的功能。 一、动名词保留着动词的特征，有时态和语态的变化。其时态语态形式如 二、动名词相当于名词，在句中主要作主语、宾语、表语和定语 1、作主语 动名词是由动词变化而来，所以，动名词的意义往往是表示某个动作或某件事情。例如： Walking is good exercise. 走路是很好的运动 Seeing is believing. 眼见为实。 Smoking may cause cancer. 吸烟可能导致癌症。 Coming to Hangzhou by train takes about 16 hours. 乘火车到杭州要16个小时。 Swimming develops the muscles. 游泳可以发展肌肉。 注意：动名词作主语时，对于一些比较长的动名词短语，一般采用"It is …"和"There is …"两种句式来表示。例如： It takes me ten minutes to get home from my office.我从办公室回家要花十分钟。 It needs time to make three copies of it.把它复制三份需要时间。 It's nice talking with you. 和你谈话很高兴。 It's no use arguing with him. 跟他争论没用。 It is no good learning without practice.学而不实践是没好处的。 There is no joking about such matters.这种事开不得玩笑。 There is no denying that she is very efficient.她效率高是不容否认的。 2、作定语 动名词作定语的情况并不是很普遍，一般只限于单个的动名词作定语，表示“用于……的”或表示“处于某件事情中的……”含义。例如： swimming pool 游泳池reading material 阅读材料 walking stick 手杖floating needle 浮针 opening speech 开幕词listening aid 助听器 waiting room 候车室working people 劳动人民 3、作表语 动名词作表语的时候，特别要注意：不要与正在进行时混淆。动名词作表语，表达的是“某件事”等。例如： His part-time job is promoting new products for the company. （动名词） 他的业余工作是为那家公司推销新产品。
动名词做主语、宾语精讲精练 一、动名词做主语的用法 动名词做主语往往表示经常性、习惯性的动作，在口语中也可以表示具体的动作。如：Painting is his hobby．绘画是他的爱好。 Talking mends no holes．空谈无济于事。 动名词做主语和不定式做主语一样，也可以用it作形式主语。如： It is no use talking without doing．光说不做没有用。 不定式做主语往往表示具体的特别是将来的动作。如： It's so hot．What I want to do now is to have a swim in a river．天这么热，现在我想做的事是在河里游泳。 【考例】 —What do you think made Mary so upset？ — __________ her new bicycle．（1997上海高考题） A．As she lost B．Lost C．Losing D．Because of losing 该题正确选项为C，losing her new bicycle是句子的主语，谓语made her so upset被省略，losing．．．在此表示具体的动作。 二、动名词作宾语的用法 1．有些动词或短语动词后常用动名词作宾语。如admit，appreciate，avoid，can't stand（不能忍受），consider，delay，devote．．．to，dislike enjoy，escape，excuse，feel like，finish，forgive，get down to，give up，imagine，insist on，keep（on），look forward to，mention，mind，miss（错过），pay attention to，practice，put off，stick to，suggest等等。 【考例】 I can't imagine __________ that with them．（MET 1986） A．do B．to do C．being done D．doing 该题正确选项为D 2．在allow，advise，forbid，permit后直接跟动名词作宾语，如果有名词或代词作宾语，则构成“allo w／advise／forbid／permit ＋名词／代词＋不定式（宾语补足语）”之形式如：We don't allow smoking here． We don't allow anybody to smoke here． 3．动词need，require，want意为“需要”时，后跟动名词的主动式或不定式的被动式作宾语，意义没有区别。如： The window needs／requires／wants cleaning／to be cleaned． 4．在begin，continue，love，like，hate，prefer，intend，start后用动名词和用不定式作宾语均可，意义没有多大区别。 5．动词forget，go on ，mean ，regret， remember，stop，try，be used to，can't help后跟动名词和跟不定式区别较大，须注意。forget，regret，remember后跟动名词，动名词表示已经发生的动作；后跟不定式表示将要发生的动作。 go on后跟动名词表示“继续做原来做的事”；后跟不定式表示“接着做另一件事”。 mean后跟动名词表示“意味着要做某事”；后跟不定式表示“想要做某事”。 stop后跟动名词表示“停止做某事”；后跟不定式表示“停下来（别的事）开始做某事”。
动名词做主语和宾语的用法及练习 1.谓语用单数。 Climbing mountains is really fun. Swimming is my favorite sport. Reading is an art. Getting up early is a good habit. 例：1.-What do you think made Mary so upset？ -___ her new bicycle. A. As she lost B．Lost C．Losing D．Because of losing 2. 使用形式主语it，而将动名词放在句尾。 It’s no use doing … It’s no good doing… It’s a waste of time doing … 例：It’s no good______ (wait) here. It’s no use ______(argue) with her. It’s no good _______(smoke), you’d better give it up. It’s a waste of time _______(wait) here. No smoking ( =No smoking is allowed (here) ). 作宾语 习惯上接动名词作宾语的动词【附记忆口诀】 其后习惯上要跟动名词作宾语的常见动词有以下词汇：, admit, appreciate, avoid, burst out, consider, delay, deny, dislike, enjoy, escape, excuse, fancy, feel like, finish, forgive, give up, (can’t) help, imagine, keep (on), mind, miss, practise, prevent, put off, resist, risk, (can’t) stand, stop, suggest, unde rstand 等。如： 用法举例： He admitted having taken the money. 他承认拿了那笔钱。 It was impossible to avoid being affected. 要想不受影响是不可能的。 She burst out crying (laughing, singing). 她突然哭(笑，唱)起来。
动名词的用法 . 动名词做主语的用法 动名词做主语往往表示经常性、习惯性的动作 , 在口语中也可以表示具体的动 作。如: Seeing is believing. Helping her is my duty. Talking mends no holes. 空谈无济于事。 动名词做主语和不定式做主语一样，也可以用 it 作形式主语。如 : It's rather tiring walking around in a city. 不定式做主语往往表示具体的特别是将来的动作。如 It's no use crying over spilt milk. He realized that to go on like this was wrong. （ . 动名词作宾语的用法 escape, excuse, feel like, finish, forgive, get down to, give up, imagine. insist on, keep （on ）, look forward to, mention, mind, miss （ 错过）, pay attention to, practice, put off, stick to, suggest 等。 Doing morning exercises is good for your health. 做早操对你的健康有好处。 Her shoes wants mending. Working with you is a pleasure. 和你一起工作是一种乐趣。 覆水难收。 指具体动作 ) 1( 有些动词或短语动词后常用动名词作宾语。如 admit, appreciate, avoid can't stand （ 不能忍受 ）, consider ，delay, devote …to, dislike enjo y ，
动名词做主语和宾语的用法及练习(2014-05-23 16:24:50) 1．动名词（动名词具有动词和名词的特征，在句中作主语、表语、宾语和定语） 动名词 主动语态 被动语态 与谓语动词的关系 一般式 Doing Being done 与谓语动作同时发生 完成式 Having doing Having been done 动作发生在谓语动作之前 作主语 1. 谓语用单数。 Climbing mountains is really fun. Swimming is my favorite sport. Reading is an art. Getting up early is a good habit. 例：1.-What do you think made Mary so upset？ -___ her new bicycle. A. As she lost B．Lost C．Losing D．Because of losing 2. 使用形式主语it，而将动名词放在句尾。 It’s no use doing …
It’s no good doing… It’s a waste of time doing … 例：It’s no good______ (wait) here. It’s no use ______(argue) with her. It’s no good _______(smoke), you’d better give it up. It’s a waste of time _______(wait) here. No smoking ( =No smoking is allowed (here) ). 作宾语 I enjoy listening to music. He often practices playing the piano in the evening. He has given up smoking. Would you mind turning down your radio a little, please? 他不喜欢喝酒。 他充分利用时间练习唱歌。 我提议坐我的车去。 你介意我开窗吗？ (1) 只能接动名词作宾语的动词： admit，
动名词是一种兼有动词和名词特征的非谓语动词。它可以支配宾语，也能被副词修饰。动名词有时态和语态的变化。 解释：动词的ing形式如果是名词，这个词称动名词。 特征：动词原形+ing构成，具有名词，动词一些特征 一、动名词的作用 动名词具有名词的性质，因此在句中可以作主语、表语、宾语、定语等。 1、作主语 Reading is an art. 读书是一种艺术。 Climbing mountains is really fun. 爬山是真有趣。 Working in these conditions is not a pleasure but a suffer. 在这种工作条件下工作不是愉快而是痛苦。 动名词作主语，有时先用it作形式主语，把动名词置于句末。这种用法在习惯句型中常用。如： It is no use/no good crying over spilt milk. 洒掉的牛奶哭也没用。 It is a waste of time persuading such a person to join us. 劝说这样的人加入真是浪费时间。 It was hard getting on the crowded street car. 上这种拥挤的车真难。 It is fun playing with children. 和孩子们一起玩真好。 There is no joking about such matters. 对这种事情不是开玩笑。 动名词作主语的几种类型 动名词可以在句子中充当名词所能充当的多种句子成分。在这里仅就动名词在句子中作主语的情况进行讨论。 动名词作主语有如下几种常见情况： 1. 直接位于句首做主语。例如： Swimming is a good sport in summer. 2. 用it 作形式主语，把动名词(真实主语)置于句尾作后置主语。 动名词做主语时，不太常用it 作先行主语，多见于某些形容词及名词之后。例如： It is no use telling him not to worry. 常见的能用于这种结构的形容词还有：better，wonderful，enjoyable，interesti ng，foolish，difficult，useless，senseless，worthwhile，等。 注意：important，essential，necessary 等形容词不能用于上述结构。 3. 用于“There be”结构中。例如： There is no saying when he'll come.很难说他何时回来。 4. 用于布告形式的省略结构中。例如： No smoking ( =No smoking is allowed (here) ). （禁止吸烟） No parking. （禁止停车） 5. 动名词的复合结构作主语
必修4 Unit 2 Working the land 编制：李小艳审定：高一英语备课 Period 5动名词做主语和宾语 每日赠言：He who does not rise early never does a good day’s work. 学习目标：Students are able to understand the usage of doing as subject and object. 预习案： 1) The parents suggested ____ in the hotel room but their kids were anxious to camp out during the trip. A. sleep B. to sleep C. sleeping D. having slept 2)How I regret ___ so much time in the net bar! I should have studied harder. A. to waste B. wasting C. wasted D. being wasted 3) We should often practise ___ English with each other. A. to speak B. spoke C. speak D. speaking 4)Keep on ____ and you will succeed. A. a try B. try C. triing D. Trying 5)His parents insist on ___ to college. A. he should go B. he go C. his going D. him to go 探究案： 动词的 -ing 形式可分为动名词和现在分词两类。作为动名词，它有名词的基本性质，因此动名词可以在句子中充当主语、宾语、表语，宾语补足语和定语。本单元学习动名词做主语和宾语。 1.动名词做主语（动名词做主语往往表示经常性、习惯性的动作。此时，谓语动词用单数形式） 动名词做主语有三种形式： ①动名词在句首直接做主语② It 在句首做形式主语，而动名词短语在后面做真正的逻辑上的主语③There be + no + 动名词 1）形式一动名词在句首直接做主语。例如： Reading aloud is very important for us to learn a foreign language. (collect)stamps is his hobby. Wishing for things,however, costs nothing. 2）It 在句首做形式主语，而动名词在后面做真正的逻辑上的主语。例如 Going to bed early and getting up early is considered to be a good habit. It is considered to be a good habit going to bed early and getting up early. 用下划线画出下面句子的形式主语和真正的主语 ①It was a waste of time reading that book. ②It is dangerous standing in the middle of the street. ③Is it worthwhile quarrelling with her?
动词-ing做状语【学案】 （必修四第四单元语法点） 1.-ing短语在句子中可作状语，来修饰谓语动词或整个句子，表示动作发生的时间、原 因、条件、结果、让步或伴随等情况。 2. -ing短语作状语一般表示一个次要的动作，一般都可以变为相应的状语从句或并列句。 1. 作时间状语 -ing短语作时间状语要置于句首。如： Hearing the bad news, they couldn’t help crying. =When______________________, they couldn’t help crying. 当听到这个不幸的消息时，他们情不自禁地哭了起来。 Having received his letter, I decided to write back. =After_______________________, I decided to write back. 收到他的信后，我决定给他回信。 注意：当v-ing形式所表示的动作发生在谓语动词动作之前时，应使用完成式：having done _______________(finish) his homework, he rushed out to play basketball. 2. 作原因状语 -ing短语作原因状语置于句首。如：Being so angry, he couldn’t go to sleep. =Because__________________, he couldn’t go to sleep. 因为太生气了，他不能入睡。Having been to the Great Wall many times, he didn’t go last week. =_______________he had been to the Great Wall many times, he didn’t go last week. 因为 他已经去过长城许多次，上周他就没去。 3. 作条件状语 -ing作条件状语置于句首或句末。如：Working hard, you will succeed. =If______________, you will succeed. 如果你勤奋一点，你就会成功。
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：
动名词作主语和宾语 1. 注意：动名词的否定形式直接在它之前加not。 2.Detailed principles ①动名词做主语的用法(subject) 动名词做主语往往表示经常性、习惯性的动作,谓语动词用单数动词。如： __________(see) is believing. ____________(help) her is my duty. __________ (eat)too much is bad for your health. ______________(work)with you is a pleasure. 动名词做主语和不定式做主语一样，也可以用it作形式主语。如： ●It is useless trying to argue with Mark. ●It is no use talking with him. 归纳：常用-ing形式作主语的句型有： ●It be no use/useless doing 做……是没用的 ●_____________________________________________ ●_____________________________________________ ●_____________________________________________ ●…… eg：在这儿等没好处，我们走回家吧。 争辩此事是浪费时间。 要把一切按时准备好很困难。 ②动名词作宾语的用法(object) 1.有些动词或短语后常用动名词作宾语。如admit, appreciate, avoid, consider, suggest, allow, enjoy, escape, finish, imagine, practise, mind, miss, imagine等动词, insist on, keep on, give up, feel like, dream of, be/get used to, look forward to, devote…to, pay attention to等短语。 eg：你介意把门打开吗？(mind) 工作之余，袁隆平喜欢听小提琴曲。(enjoy) 那个姑娘每晚练习拉小提琴。(practise) 这些天他在考虑换工作。(consider) 他承认犯了一个严重错误。(admit) 今晚我想去看电影。（feel like） 人们不断来医院看望他。(keep on) 2.在allow, advise, permit等动词后直接跟动名词作宾语，如果这些词后有名词或代词作宾语，则构成“allow／advise／permit ＋名词／代词＋不定式（宾语补足语）”之形式。如：
动名词作非谓语动词 一，句子成分 1， Seeing is believing. Playing with fire is dangerous. It’s no good/use doing It’s no good waiting here. 2 I enjoy listening to music. He often practices playing the piano in the evening. He is fond of playing basketball. Would you mind turning down your radio a little, please? (1) admit，advise，risk，appreciate，envy，avoid,consider，delay，deny，dislike，enjoy，escape，excuse，finish，forgive，understand，give up，imagine，keep，mind，miss，practise，put off，resist，suggest,can’t help ，can’t stand devote to，look forward to，stick to，be used to，object to，be busy，fee like,be surprised at be proud of, succeed in,be afraid of害怕, give up 放弃 (2) happen ，offer ，promise ，agree ，refuse，decide ，determine ，pretend ，fail ，learn，wish，hope，expect，afford (3) like，love，dislike，hate，begin，star，continue，prefer，can’t bear/endure ，cease (4) forget，go on，mean，regret，remember，stop，try Eg. In some parts of London, missing a bus means _______ for another hour. A waiting B to waiting C wait D to be waiting (5)need, require, want,be worth The flowers need watering/to be watered. The problem is worth discussing. 3. My hobby is collecting stamps. Her job is washing, cleaning and taking care of the child 4. (1)