动名词做主语练习
Ⅰ. 完成句子。
1. 学习而不实践是没用的。
It is useless ____________________________.
2. 晚饭之后去散步对身体有好处。
_________________________________ is good for your health.
3. 在电视上看自己感觉很搞笑。
It felt funny ___________________________.
4. 和比尔争吵也没有用，因为他从来不会改变主意。
_______________________________ because he will never change his mind.
Ⅱ. 单项填空。
1. your business becomes international, constantly will be part of your life.
A. For; flying
B. Since; flight
C. Now that; flight
D. Once; flying
2. yourself from the sun is the most important step you can take to get younger looking skin.
A. Protected
B. Being protected
C. Protecting
D. Having protected
3. It is no good today’s work till tomorrow.
A. to leave
B. leaving
C. leave
D. left
4. — I did it again. I slept until noon.
— through the alarm seems to be your biggest problem.
A. Asleep
B. To sleep
C. To be asleep
D. Sleeping
5.-What do you think made Mary so upset？
-___ her new bicycle.（1997上海）
A. As she lost B．Lost
C．Losing D．Because of losing
Key:
Ⅰ. 1. learning without practice 2. Taking a walk after supper 3. watching myself on T V4. It is no use arguing with Bill
Ⅱ. 1. D。once “一旦”，引导时间状语从句；flying constantly为动名词短语作主语。
2.C。作主语成分应该是名词性的，即应用动名词，又因protect与yourself之间
为主谓关系，故用主动形式。句意：免受日光的照射是使你的皮肤看上去更年轻的最重要的步骤。
3. B。
4. D
5.答案C。Losing在此为动名词，与her new bicycle构成动名词短语在句中作主语。该题可以理解为：Losing her new bicycle made Mary so upset．
HOMEWORK 1:
Look 和see 的区别：
1、意思不同：look是指经常意义上的看，比较常用和口语化，就是我们一般随口就是look，还有名词表情的意思；see除了动词的看之外还当了解，明白的意思讲，而see大部分用做了解的意思，比如说I see，翻译成我了解了，我明白了，不能说说成我看见了。
2、搭配：look做看的意思时一般接at，比如说Come on，look at this。意思是过来看看这个。而see后便直接跟名词，如I can see a battle on the table.我看见桌子上有个瓶子。
扩充：
look强调看的动作
look at强调看的目标look at 更具体look一般不单独使用的look 视眼广阔,look at 有些提示你注意看某个东西的意思通常来说,look是一个不及物动词,后面不能直接添加宾语,所以仅仅表示“看”.如果想要表达“看某物”“,那么就应该在look后添加介词at,look at是及物动词短语,后面必须有宾语. HOMEWORK２：
学生用2个句型各写3个句子。
It is no good /no use /useless doing sth.
It is a waste of time doing sth.
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
现在分词 Form: ?doing ?having done（先后关系） 现在分词表示主动含义或动作正在进行。 Exercise: 划出句中的现在分词，并指出它在句中做何成分。 1. The three contestants were sitting at their desks on the stage, waiting. 2. Hearing the news, he jumped with joy. 3. Having finished his homework, he went out. 4. People living in the cities used to regard farming as boring and backward. 5. The changes in Sunqiao is very amazing. 现在分词做定语： Exercise: Combine each pair of sentences 1. The men are required to come to the headmaster’s office. They had some overseas working experience. 2. The people take part in a variety of exercise They can keep healthy. 3. The research at Sunqiao produces seeds. The seeds help farmers grow better crops. 4. People used to regard farming as boring and backward. These people live in cities. 5.Do you know the boy? He is standing under the tree. 6. The spiders store the mice for later. The mice serve as a source of food. Exercise: compare The swimming pool is clean and big. The swimming boy is his brother. The big writing desk is very expensive. The writing student is Tom’s classmate. 现在分词作状语：时间，条件，伴随方式，原因，结果 Exercise: rewrite the sentences 1. Kitty heard the news. She jumped with joy. 2. Tom put on his swim-suit. He dived into the swimming pool. 3. While she was cooking, she burned her right hand. 4. After he had finished his homework, he went out to play football. 以上改写后的三个句子中的现在分词短语做______状语。 现在分词作状语：相当于状语从句，但从句和主句的____语必须一致. 时间状语： 1. Working in the factory, he learned a lot from the workers.(分词一般式） 2. Having read the letter, she got very excited（完成式） 3. ________hearing the news, they all jumped with joy. 4. = as soon as _________________________________________. 5. Be careful when crossing the street. 条件状语： 1.If you walk hard, you will succeed. 2. = _______________________________ 伴随方式状语 1. She came _______(run) towards me. 2. The children ran out of the room, __________(laugh) and _______(talk) merrily. 3. ____________(travel) by jeep, we visited a number of cities. 4. ____________(follow) the guide, they started to climb. 5. _____________(follow) by the students, the teacher entered the office. 原因状语 1. Because I was sick, I stayed at home.
动名词作主语
————————————————————————————————作者：————————————————————————————————日期： ?
动名词作主语 如果一个动词加上了ing变成了名词，那么这个词称动名词。动名词是一种兼有动词和名词特征的非限定动词。它可以支配宾语被副词修饰。动名词有时态和语态的变化。 由于动名词是由动词变化而来,它仍保留着动词的某些特征，具有动词的某些变化形式，用以表达名词所不能表达的较为的意念。动名词的名词特征表现在它可在句子中当名词来用，作主语、宾语、表语、定语。它也可以被副词修饰或者支配 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。 作主语 Reａｄｉｎg iｓ an art. 读书是一种艺术。 Ｃｌimbing ｍountａｉns is really fun. 爬山真是有趣。 Worｋing iｎｔheｓe conｄｉtions is noｔ a pleａsurｅ but a ｓuffer．在这种工作条件下工作不是一件的事而是一件痛苦的事。 动名词作主语，在动词的基础上加Ing,使该动词或动词短语，有名词的各种特征,可作名词灵活使用。如： Ｉt is no usｅ／nｏ good crｙinｇ oｖer spilｔ miｌk. 覆水难收 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 It ｗａs hａrd ｇettｉｎg ｏｎｔｈe crowded street ｃar. 上这种拥挤的车真难。 Iｔiｓ fｕｎplayiｎg 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 tｏworｒy. 常见的能用于这种结构的形容词还有:ｂetter，wondｅｒfuｌ，enｊoyａble,ｉntereｓting,foolish，dｉffｉcｕlt ｅｓs，seｎseleｓs,worthwhiｌｅ,等。 注意:impoｒtanｔ,essential，nｅｃessａry 等形容词不能用于上述结构。 ３．用于“Tｈeｒｅbe”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： Nｏｓmoking （ =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 当动名词有自己的逻辑主语时，常可以在前面加上一个名词或代词的所有格,构成动名词的复合结构(——这时，名词或的所有格做动名词的逻辑主语)。动名词的复合结构也可以在句中作主语。例如: Their coming to help was a gｒｅaｔｅncourageｍｅnt ｔo us． 6.例词
英语时态八种基本时态讲解及练习 一．概念：英语中表示不同时间发生的动作或存在的状态，需用不同的动词形式表示，这种不同的动词形式称为时态。 二．种类：（基本时态） 一般现在时一般过去时 现在进行时过去进行时 一般将来时过去将来时 现在完成时过去完成时 三．用法： 1）一般现在时表示经常发生或习惯性的动作或状态及客观现实和普遍真理。 一般现在时常以动词原形表示，但当主语是第三人称单数时，动词词尾加-s或-es。2）句型结构：主语＋Ｖ.（包括be动词）＋宾语＋… She is an engineer. He has breakfast at 6:00every day. 3）注意： a)一般现在时通常与always , often , usually , every day , sometimes , once a week等时间状 语连用。 I always watch TV at 8: 00 in the evening . They go home once a week . We usually do our homework at home . b)表客观现实或普遍真理。 The sun always rises in the east . The light travels faster than the sound . c)表永远性的动作或状态。 He lives in the country .
4）第三人称单数变化形式。 a)一般情况动词在词尾加-s . come---comes speak---speaks work---works live---lives b)以o, s, x, ch, sh结尾的单词在词后加-es. do---does go---goes finish---finishes brush---brushes fix---fixes pass---passes watch---watches c)以“辅音字母＋y”结尾的单词变y为i加-es. Study---studies carry-carries cry---cries d)以“元音字母＋y”结尾的单词直接加-s. play---plays stay---stays 例句：我们每天晚上九点做作业。 我在早上七点半起床。 他每天七点去上班。 我们经常下午打篮球。 他喜欢音乐。 地球围绕太阳转。 火车六点出发。 5）否定句和疑问句。 a)-----He is an engineer. -----He isn’t an engineer. -----Is he an engineer? -----Yes, he is ./ No, he isn’t. b)----We get up at 7:30 in the morning . -----We don’t get up at 7:30 in the morning . -----Do you get up at 7:30 in the morning ?
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 ，
现在分词专项训练 1.The wild flowers looked like a soft orange blanket ________ the desert. A. covering B. covered C. cover D. to cove 2.The flowers________sweet in the botanical garden attract the visitors to the beauty of nature. A. to smell B. smelling C. smelt D. to be smelt 3. Will those________the children from abroad come to the headmaster ’s office? A. teaching B. teach C. who teaches D. who teaching 4. There are hundreds of visitors________in front of the Art Gallery to have a look at Van Gogh ’s paintings. A. waited B. to wait C. waiting D. wait 5.________the meeting himself gave them a great deal of encouragement. A. The president will attend B. The president to attend C. The president attended D. The president ’s attending 6. —Why did you go back to the shop? —I left my friend ________ there. A. waiting B. to wait C. wait D. waits 7. Don ’t leave the water ________wlehiyou brush your teeth. A. run B. running C. being run D. to run 8. A cook will be immediately fired if he is found________in the kitchen. A. smoke B. smoking C. to smoke D. smoked 9. I found the game ________, and my dad explained for the rules. A. excited B.to excite C. excite D. exciting 10. When________different cultures, we often pay attention only to the differences without noticing the many similarities. A. compared B. being compared C. comparing D. having compared 11. More and more people are signing up for Yoga classes nowadays, ________advantage of the health and relaxation benefits. A. taking B. taken C. having taken D. having been taken 12. Daddy didn ’t mind what we were doing, as long as we were together, ________fun. A. had B. have C. to have D. having 13. Oil prices have risen by 32 percent since the start of the year, ________a record US $57.65 a barrel on April 4. A. have reached B. reaching C. to reach D. to be reaching 14. He glanced over at her, ________that though she was tiny, she seemed very well put together. A. noting B. noted C. to note D. having noted 15. Having been attacked by terrorists,______. A. doctors came to their rescue B. the tall building collapsed C. an emergency measure was taken D. warnings were given to tourists 16. Alice returned from the manager ’s office, ________me t h a w t t a h n e t e b d o s t o s s e e me at once. A. having told B. tells C. to tell D. telling 17. “We can’t go out in this weather, ”said Bob, ________out of the window. A. looking B. to look C. looked D. having looked 1.答案是A 。a soft orange blanket 与cover 存在主谓关系，因此要用现在分词作谓语，它相当于定语从句which
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。
现在分词专项练习题 I .单项选择 1. ____ the house on fire, he dialed 119. A. To see B. Seeing C. Having seen D. Being seen 2. ___a post office, I stopped____ some stamps. A. Passed, buying B. Passing, to buy C. Having passed, buy D. Pass, to buy 3. ____a little money, Jimmy was able to buy his mother a lovely new lamp. A. To save B. Saving C. Saved D. Having saved 4. The result of the test was rather _____. A. disappointed B. disappointing C. being disappointed D. disappoint 5. _____how to do the homework, I went to ask my teacher for help. A. Not to know B. Not knowing C. Knowing not D. Not known 6. ____the office, the foreign visitors were shown round the teaching building. A. Having shown B. Showing C. Has shown D. Having been shown 7. He went from door to door, ____waste papers and magazines. A. gathering B. gathered C. gather D. being gathered 8. The student corrected his paper car efully, ____the professor’s suggestions. A. follow B. following C. followed D. being followed 9. People ____in the city do not know the pleasure of country life. A. live B. to live C. lived D. living 10. A person _____a foreign language must be able to use the foreign language, ______all about his own. A. to learn, to forget B. learning, to forget C. to learn, forgetting D. learning, forgetting 11. ___different kinds of pianos, the worker’s farther improved their quality. A. To produce B. Being produced C. Produced D. Having produced 12. ___many times, he still couldn’t understand. A. Having been told B. Having told C. He having been told D. Telling 13. China is one of the largest countries in the world, _____9. 6 million square kilometres. A. to cover B. covered C. covers D. covering 14. The visiting Minister expressed his satisfaction with the talks,____ that he had enjoyed his stay here. A. having added B. to add C. adding D. added 15. _____ the composition, John handed it to the teacher and went out of the room. A. Writing B. Having written C. Written D. Being written 16. He walked down the hills, ____softly to himself. A. sing B. singing C. sung D. to sing 17. When I came in, I saw Dr. Li _____a patient. A. examine B. examining C. to examine D. examined 18. ____a satisfactory operation, the patient recovered from illness very quickly. A. Having been given B. Having given C. Giving D. Being given 19. The next morning she found the man ______ in bed , dead .A. lying B. lie C. lay D. laying 20 . _______ a reply , he decided to write again . A. Not receiving B. Receiving not C. Not having received D. Having not received II.用动词正确形式填空 1.______ more attention, the trees could have grown better.(give) 2.The missing boys were last seen ______ near the river. (play)
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
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：