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动词ing形式专项练习
挑战一、请给下面的单词加上“ing”形式，并留心观察它们的变化规律。
buy ____________ wear ____________ feed ____________ grow ____________ see ____________ catch ____________ deliver ____________ play ____________ sing ____________ tell ____________ blow ____________
go ____________
do ____________
sweep ____________ help ____________ jump ____________ sleep ____________
talk ____________ check ____________ think ____________ work ____________ look ____________ cook ____________
ask ____________
learn ____________ clean ____________ garden ____________
meet ____________
eat ____________
have ______________ take ______________ move ______________ drive _______________ serve _______________ give ________________
forget ____________ cut ____________
get ____________ swim ____________ skip ____________
run ____________
动词ing形式的用法及变化规则 一．动词ing形式的用法 1.正在进行时中,谓语动词后加ing. 如:I'm playing football. 2.一些特殊表达..如: be good at doing sth enjoy doing sth. be busy doing feel like doing thank you for doing do some cooking/cleaning/reading/shopping/washing go swimming/fishing/shopping/skating/boating 二．动词现在分词由动词原形在词尾加ing构成，其规则如下： 1）一般情况下直接加ing think---thinking sleep---sleeping study---studying speak---speaking carry---carrying say---saying 2）以不发音的字母e结尾的单词，去掉字母e，再加ing wake---waking make---making come---coming take---taking leave---leaving have---having 3）以重读闭音节结尾，呈现“辅，元，辅”结构的动词，先双写末尾的辅音字母，再加ing 。初中学过的这类词有：begin，cut, get, hit, run, set, sit, spit, stop, swim, beg, drop, fit, nod, dig, forget, regret, rid, 等。 (visit 不是以重读闭音节结尾，不用双写) travel虽然重读第一音节，词尾音节不重读，但是现在分词仍要双写末尾辅音字母，然后再加ing ，如：travel---travelling.初中阶段此类词只有这一个。4）以 y 结尾的动词直接加 ing carry—— carrying enjoy—— enjoying 5）以ie结尾的动词，把ie改为y ，再加ing
第6章动词的-ing形式 动词的-ing形式包括传统语法的“动名词”（gerund）和“现在分词”（present participle）两个部分。动词的-ing形式具有动词的特征，同时又具有名词、形容词和副词的特征，因此它可以在句中作主语、表语、定语、宾语、宾语补足语和状语。 一、动词-ing形式的特征和种类 与动词不定式一样，动词的-ing形式也具有动词的特征，有时态和语态的变化，并可带状语、宾语等。 A.动词-ing形式的一般式 1. 动词-ing形式的一般式可用来泛指一个动作，没有特别的时间意义。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。 2. 动词-ing形式的一般式可用来表示和谓语动词同时发生的动作。 They went out of the classroom, talking and laughing. 他们有说有笑地走出教室。 She listened carefully to her neighbours speaking. 她倾听她邻居的讲话。 3. 动词-ing形式的一般式有时也可表示在谓语动词的动作之前或之后发生的动作。 I remembered sending him an e-mail last week. 我记得上星期给他发过一份电
子邮件。 He suggested taking my daughter to the zoo the next Sunday. 他建议下个星期天带我女儿去动物园。 B. 动词-ing形式的完成式 动词的-ing形式的完成式表示一个已完成的动作，这个动作发生或完成在谓语动词表示的动作之前。 Having lived in this city for three years, she knows it very well. 在这个城市生活了3年，她对这里已很熟悉。 I really regretted having missed such an exciting lecture. 错过了这么振奋人心的演讲，我真的很遗憾。 注意： 在现代英语中，作宾语的-ing形式的完成式可用一般式来代替。 I really regretted missing such an exciting lecture. 错过了这么振奋人心的演讲，我真的很遗憾。(=I really regretted having missed such an exciting lecture.) We remembered seeing the film. 我们记得看过这部电影。(=We remembered having seen the film. ) C. 动词-ing形式的被动形式 动词的-ing形式的被动形式表示它的逻辑主语是-ing形式表示的动作的承受者。 1．一般式的被动形式 The question being discussed is very important. 正在讨论的问题很重要。
动词的ing形式 1. -ing分词的构成 -ing分词是由动词原形加词尾-ing构成。-ing分词同样有时态和语态的变化，通常有下表几种形式（以do为例）： 主动形式 被动形式 一般式 doing being done 完成式 having done having been done -ing分词的否定形式是由not 加-ing分词构成。如： Not knowing his address, I could do nothing but stay at home and wait. 不知道他的地址，我只好在家里等着。 His not coming made all of us angry. 他没来使我们大家都很生气。 2. -ing分词的一般式和完成式： -ing分词的一般式表示和谓语动词所表示的动作同时进行的动作；完成式表示在谓语动词所表示的动作之前发生的动作。如： Being a student, he was interested in books. 作为一个学生，他对书本很感兴趣。 Not having studied his lessons very hard, he failed the examinations. 因为没有努力学习功课，他考试不及格。 3. -ing分词的被动式： -ing分词的被动式表示它的逻辑主语是-ing分词动作的承受者。根据-ing分词动作发生的时间，-ing分词的被动式有一般被动式(being done)和完成被动式(having been done)。如：The question being discussed is very important. 正在被讨论的问题很重要。 He never talked about his having been interviewed by the reporter. 他从来没谈起过他被记者采访的事情。 Having been criticized by the teacher, he gave up smoking. 被老师批评以后，他把烟戒了。
动词-ing形式的被动语态 动词-ing形式包括现在分词和动名词两种形式，因而其被动结构也有这两种形式。从时态上讲，动词-ing形式的被动语态有一般式和完成式两种，即being done和having been done.动名词的被动形式在句中可作主语、宾语、表语、定语、和宾补；现在分词的被动形式在句中可作宾补、定语、表语和状语。 一，动词－ing形式的一般式和完成式 1.一般式表示一个被动的动作正在进行或与谓语动词所表示的动作同时发生。 That building being repaired is our library. 正在维修的那座大楼是我们的图书馆。 She insisted on being given the hardest work. 她坚持被派给最艰苦的工作。 2.完成式表示的动作发生在谓语动词所表示的动作之前。 Having bee invited, Mr Li went there to make a speech though he was busy.被邀请后，李先生尽管很忙，还是去了那儿做了演讲。 I appreciated having been given the chance to study abroad two years ago.我非常感谢两年前获得了去国外学习的机会。 二，动词－ing形式被动式的否定形式，是在其前面加not. He was unhappy for not having been invited to the party.没有被邀请参加聚会，他感到很不高兴。 三，动名词的被动形式 1.当动名词的逻辑主语是这个动名词所表示的动作的承受者时，动名词一般要用被动形式。Being exposed to the nuclear radiation for long will do great harm to one’s health. 长时间暴露在核辐射下会对人体健康造成很大的伤害。 The girl was annoyed by being left alone. 让她一个人待着，这个女孩很恼火。 2.句法作用 （1）作主语 Being killed by sharks at that time was a common occurrence. 那是被鲨鱼吃掉是常有的事。 Missing the target again made the coach annoyed. 又脱靶了，这使得教练很恼火。 （2）作宾语 V.-ing 的被动形式既可以作及物动词的宾语，又可以作介词的宾语。 I appreciate having been given the chance to achieve my target. 我很感激给我这次实现目标的机会。 He couldn’t bear being made fun of like that. 人家那样开他的玩笑他受不了。 He did it without being asked. 没有谁让他做，是他自己做的。 I look forward to being invited to his wedding. 我盼望能受邀参加他的婚礼。
动词ing形式的用法 一)Ving形式作定语 分词短语作定语时，放在被修饰的名词之后；单个分词作定语时，放在被修饰的名词之前。例如： The man standing by the window is our teacher. Many frightened people rushed out of the burning building. Ving作定语主要表示动作和用途。 1. 表示动作（主动的、进行的动作）。 a waiting car = the car that is waiting a sleeping child 熟睡的孩子 The girl standing there is my sister. 站在那儿的女孩是我的姐妹。 [注意]现在分词作定语时，它表示的动作是正在进行或与谓语动词所表示的动作几乎同时发生，如果两个动作有先有后，一般不能用现在分词作定语，而要用定语从句。例如： The teacher criticized the student who had broken the window. 老师批评了打破窗户的学生。 2. 表示用途： the waiting room = the room for waiting 候车室 a working method 工作方法 He has a reading room. 他有一个书房。 【比较】 过去分词作定语： 及物动词的过去分词表示被动，不及物动词的过去分词表示动作完成。例如： That is the book written by Lu Xun. 那是鲁迅写的书。 He is a returned student. 他是一个归国的留学生。 不定式作定语： 用不定式作定语，其经常所修饰的名词、代词有：
动词 -ing 形式的被动式 在上个单元我们学习了动词不定式的被动式，今天我们一起来学习动词-ing 形式的被动式。[看一看 ] 请看下列句子，看看动词-ing 形式的被动式在各句中作什么成分。 1.So being killed by sharks was a common occurrence. 2.He didn ’ t mind being left at home. 3.That building being repaired is our library. 4.Being protected by a thick wall, they felt they were quite safe. 5.Having been given such a good chance, how could she let it slip away? [讲一讲 ] 动词 -ing 形式的被动式在句中可以作主语（如句 1）、作宾语（如句 2 ）、作定语（如句3）、作状语（如句 4 和句 5 ）。此外，动词-ing 形式的被动式还可以在句中构成复合宾语。如：You’ ll find the topic being discussed e verywhere. 你会听到到处都在讨论这个问题。 He often watched the boats being unloaded. 他常常看轮船卸货。 As we approached the village we saw new houses being built. 走近村子时我们看到正在盖新房。 此外，在 want, need, deserve, require等动词后，尽管表示的是被动含义，我们却用动词 -ing 形式。如： My pen needs filling.我的笔该上墨水了。 The point deserves mentioning. 这点值得提一下。 This problem requires studying with great care. 这问题需要仔细研究。 在 worth 这个形容词后情形也是这样： Her method is worth trying. 她的方法值得试一下。
动词ing形式的用法及变化规则 一?口诀：now look listen be,动词要加ing,加了ing,不要忘了be。 二.动词现在分词由动词原形在词尾加ing构成，其规则如下： 1)—般情况下宜接加ing think…thinking sleep…sleeping study…studying speak—speaking carr\T—carrying say■一saying 2)以不发音的字母e结尾的单词，去掉字母e,再加ing wake■一waking make一-making come—coming take―taking leave—leaving have■一having 3)以重读闭音节结尾，呈现“辅音，元音(aeiou),辅音”结构的动词，先双写末尾的辅音字母，再加ing。 这类f司有：shop, begin, cut, put, get, hit, run, set, sit, spit, stop, swim, bug, drop, fit, nod, dig, forget, regret, rid,等。
Visit不是以重读闭音节结尾，不用双写) travel虽然重读第一音节，词尾音节不重读，但是现在分词仍要双写末尾辅音字母，然后再加ing ,女口：travel—travelling.初中阶段此类词只有这一个。 4)以ie结尾的动词,把ie改为y ,再加ing 女口：die---dying lie---lying 一.写出下列动词的现在分词形式 work ____________ visil ___________ play ___________ study _________ dance ________ h ave ______ ___ travel __________ take __________ drop ___________ sin ___________ shop _________ swim __________ lie ___________ 二.选择题练习 1 ? Who _______________ over there now? A. singing B. arc sing C? is singing D. sing 2. It" s eight <)' clock. The students _________ an En^jish class? A. have E. C? is having D? arc having 3? Listen! The baby _____ in the next room? A. crying E? cried C? is crying D? cries 4.Look! The twins ______ new sweaters?
概念引入 The music they are playing sounds so exciting . We watched three boys sharing their food with each Our job is playing all kinds of music . The girl singing now is a classmate of mine 用法讲解 非谓语动词中的ing形式包括两种： 一种是动名词，另外一种是现在分词。 ?基本形式： 1、-ing形式作表语 1) -ing形式作表语时放在系动词之后,用来泛指某种动作或行为,以说明主语的具体内容(身份、性质或情况)。 如： Her hobby is painting. 她的业余爱好是画画。 My job is looking after the children. 我的工作就是照顾这些孩子。 2) –ing用来表示主语所具有的特征， 如： His concern for his mother is most touching. 他对母亲的关爱很感人。 His words are encouraging. 他的话很鼓舞人。 2、-ing形式作定语 1). 说明被修饰名词的作用和用途， 如： building materials = materials for building 建筑材料
drinking water = water for drinking 饮用水 a reading room = a room for reading 阅览室 2). 说明被修饰名词的性质和程度， 如： tiring music = music that is tiring 烦人的音乐 a surprising result = a result that is surprising 一个惊人的结果 3). 表示被修饰名词正在进行的动作， 如： 正在做实验的那个学生是我们的班长。 The student making the experiment is our monitor. 我们能看到冉冉升起的太阳。 We can see the rising sun. Attention 1) 单个-ing形式作定语时, 放在所修饰的名词之前, -ing形式短语作定语时, 放在所修饰的名词之后, 并且在意思上相当于一个定语从句。 如： They lived in a room facing the street. = They lived in a room that faces the street. 他们住在一间面朝街的房子。 The man standing there is Peter’s father. = The man who is standing there is Peter’s father. 站在那儿的那个人是彼得的父亲。 2) V-ing, 过去分词，不定式做定语时的区别： The student making the experiment is our monitor. They lived in a room facing the street. 正在举行的会议非常重要。 The meeting being held now is very important. 昨天举行的会议非常重要。 The meeting held yesterday is very important. 明天要举行的会议非常重要。 The meeting to be held tomorrow is very important. 3)-ing形式短语也可以用作非限制定语，相当于一个非限制性定语从句，这时，它与句子其他部分用逗号分开
英语语法：动词-ing形式作主语 动词-ing形式是一种非谓语形式，其可以在句子中充当除谓语动词以外的多种成分。 1.动词-ing形式的用法 1）作主语。比如： Beinga middle school teacher is fun. 当一名中学老师是一大乐趣。 Doing is not so easy as saying. 做不像说那么容易。 Flying in the sky is great fun. 在空中飞行很好玩。 Sing is better than saying. 唱比说好听。 Walking in the water is great interesting. 在水中走很有趣。 说明： 动词-ing形式作主语时（特别是较长时），经常可以换用形式主语的句式： It is no use shouting hysterically. 歇斯底里叫没有用。
It is no good crying over spilt milk. 牛奶泼掉了哭也没用。 It was good meeting you here. 在这碰到你真好。 英语作业 一、选择填空。 1. When you are being interviewed, youmust have good manners. You know just how important it is ___ a good impression. A. giving B. togive C. give D.if give 2. I spent my last week in Rome ___the teachers of the Art College and ___ pictures with them. A. visited, took B. to visit, take C. visiting, to take D. visiting,taking 参考答案： 1-2: BD 二、分析句子的语法结构，并译成中文。
V-ing形式的用法 动词-ing形式作表语、定语和宾语补足语 【知识点拨】 一、动词-ing形式作表语 动词-ing形式可用在系动词后面作表语，说明主语的性质或情况，多表示一般性的或抽象的行为。例如： The news that our school won the game was exciting. 注意：动词-ing形式作表语与进行时态的区 别：进行时态表示主语正在做什么，而动词-ing形式作表语只是说明主语的特性或情况。试比较： Mike is listening to music. 迈克正在听音乐。(当前正在进行的动作) Mike’s favorite hobby is listening to music. 迈克最大的爱好是听音乐。(说明主语的情况) 二、动词-ing形式作定语 动词-ing形式作定语有两种用法，即： 1.表示所修饰名词的用途或功能，意为“供……用的”。 例如： a reading room, a swimming pool, a singing competition, drinking water等。 2.表示主动和正在进行，相当于一个定语从句。 例如：falling leaves (=leaves that are falling), the rising sun (=the sun that is rising)。单个的动词-ing形式作定语通常放在所修饰的名词之前，而短语则一般被放在所修饰的名词之后。 例如：exciting news, the students talking about the problem。 三、动词-ing形式作宾语补足语 动词-ing形式作宾语补足语，即用来补充说明宾语的动作或情况。常用的跟动词-ing形式作宾补的动词有： 1. 表示感觉和心理状态的动词。常见的有 see, watch, hear, feel, smell, find, notice, observe, catch等。例如：I could feel my heart beating wildly. 2. 使役动词。常见的有have, set, keep, get, leave等。例如： They had the light burning all night. 【巩固练习】 I. 单项填空。 1. When she got home, she found her little son ________ on the ground, crying. A. lies B. lay C. lying D. laying 2. The patient ________ by the doctor is Li Ming’s mother. A. to examine B. examining C. is examined D. being examined
高中英语语法精讲第六章动词的-ing形式 动词的-ing形式包括传统语法的“动名词”（gerund）和“现在分词”（present participle）两个部分。动词的-ing形式具有动词的特征，同时又具有名词、形容词和副词的特征，因此它可以在句中作主语、表语、定语、宾语、宾语补足语和状语。 一、动词-ing形式的特征和种类 与动词不定式一样，动词的-ing形式也具有动词的特征，有时态和语态的变化，并可带状语、宾语等。 A.动词-ing形式的一般式 1.动词-ing形式的一般式可用来泛指一个动作，没有特别的时间意义。 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。 2.动词-ing形式的一般式可用来表示和谓语动词同时发生的动作。 They went out of the classroom, talking and laughing.他们有说有笑地走出教室。 She listened carefully to her neighbours speaking.她倾听她邻居的讲话。 3.动词-ing形式的一般式有时也可表示在谓语动词的动作之前或之后发生的动作。 I remembered sending him an e-mail last week. 我记得上星期给他发过一份电子邮件。He suggested taking my daughter to the zoo the next Sunday.他建议下个星期天带我女儿去动物园。 B.动词-ing形式的完成式 动词的-ing形式的完成式表示一个已完成的动作，这个动作发生或完成在谓语动词表示的动作之前。 Having lived in this city for three years, she knows it very well.在这个城市生活了3年，她对这里已很熟悉。 I really regretted having missed such an exciting lecture.错过了这么振奋人心的演讲，我真的很遗憾。 注意： 在现代英语中，作宾语的-ing形式的完成式可用一般式来代替。 I really regretted missing such an exciting lecture.错过了这么振奋人心的演讲，我真的很遗憾。(=I really regretted having missed such an exciting lecture.) We remembered seeing the film.我们记得看过这部电影。(=We remembered having seen the film. )
动词-ing形式的句法功能 一、做主语; e.g. Reading good books makes us
教学过程 一、复习预习 一、概念 1、v-ing 形式的种类功用和各种形式：V-ing 包括动名词和现在分词两种，分别可作： 主语、宾语、表语; （动名词） 定语、状语、宾/主语补足语 (现在分词) 注意：其否定形式是在其前边加：not/never. 其各种形式如下表： 2. V-ing 形式的被动式用法及种类 当v-in g 与它的逻辑主语构成被动关系时，要用其被动式, v-ing 的被动式有两种：一般被动式： being done ；完成被动式：having been done; V-ing 形式的被动式包括动名词被动式和现在分词的被动式两种。 二、知识讲解
考点/易错点1 动名词的被动式 动名词的被动式在句中可作主语、宾语、表语，且在句中只表被动，不表进行。 1、作主语 So being killed by sharks was a common thing. 因此被鲨鱼吃掉是常有的事。 Being laughed at in public is a terrible thing.在公共场合下被嘲笑是件可怕的事。 Being exposed to the sun does harm to health.暴漏在阳光下对身体有害。 The president’s being killed led to serious consequences.总统被杀导致了严重后果。 2、作宾语 V-ing形式的被动式既可作动词的宾语, 也可作介词的宾语。 He was afraid of _________________ (abandon) by us.He did it without ___________ (ask) You can’t eat anything before _____________(operate on)I remember having been told the story. 3、作表语 What worried the child most was his not being allowed to visit his mother in the hospital. 使孩子最为担心的是他不被允许到医院看母亲。 What I hate most is ________________ (laugh at) The problem is for from _______________ (settle) 注意：①动名词的被动式作主语和表语时，常用其一般式（being done),不习惯用完成式；但作宾语时，若其动作发生谓语动词之前或强调动作已经发生，可用其完成式（having been done)。如： I appreciate having been given the chance to study abroad. 我很感激能被给与到国外留学的机会。 ②动名词的被动式在句中作主、宾、表时，其特点是只表被动，不表进行。 ③动名词的被动式作主、宾、表时，有时可采用其复合结构形式，即：名词所有格/形容性物主代词+ being done。如： Tom’s being admitted to college is a big surprise for us.汤姆被大学入取让我们很是惊讶。 The discovery of new evidence led to his being caught.新证据的发现导致他被捕。 现在分词的被动式 现在分词的被动式常句中作宾补和定语，一般不作状语（除个别情形例外）；在句中既表被动又表进行 . 1、作宾补 现在分词的被动式（being done）作宾补时，表示正在进行的被动的动作，常与感官动词连用。 I saw James being held up in the water by old Tom. You’ll find the topic _______________ (discuss) everywhere now. As we approached the village we saw new houses _____________ (build) 注意：与过去分词作宾补的区别：过去分词作宾补表示动作已完成. 2、作定语 现在分词的被动式（being done）作定语时时，表示正在进行的被动的动作。 The meeting ______________ (discuss) now is very important. He asked who was the girl _____________ (operate）on in the operating room. 注意：①现在分词的被动式作后置定语时，表示正在进行的被动的动作；过去分词作后置
初中英语语法（动词不定式和动词ing形式） 1.动词不定式结构：to do 1.动词不定式做主语，常用It 作形式主语，将to不定式后置 It’s +adj. +(for sb) to do sth （对某人来说，做……怎么样） It’s difficult for me to solve the math problem.对我来说解决这道数学题很 难。 It’s hard to get up early in the morning. 早起很难。 但是有些形容词只能与of搭配，这些词表示对别人的表扬，夸奖，责怪…, 如：clever, good, kind, nice, stupid It’s kind of you to say so. 你这么说太好了。 It’s good of you to come. 你能来太好了。 2. 以下有几组不定式搭配要牢记： 1. in order to do sth /so as to do sth 两者都表示：为了做…… He goes to the English corner every week in order to improve his spoken English. 他每周去英语角是为了提高英语口语。 2. in order that /so that 两者也表示：为了做……后面跟的是句子，不是动词原形 He goes to the English corner every week so that he can improve his spoken English quickly. 他每周去英语角是为了能够快速的提高自己的英语口 语。 3. too +adj. to do sth :表示：太……以至于不能…… The water is too hot to drink. 水太烫了，没有办法喝。（虽然句子里面 没有not，但是这句话是表示否定意义的） 4. 形容词或副词+enough to do sth :足够……能…… He isn’t strong enough to move the bookcase. 他力气不够大，搬不动书 架。 5. 不带to 的动词不定式： a. Why not do sth ….?为什么不做……？ Why not have a try? 为什么不试一试呢？ b, had better do sth …最好做…… You’d better work harder. 你做好再努力些。 c, have sth do sth 迫使某人做某事 The boss had the workers work day and night. 老板迫使工人们每日每夜 的干活。 d, help sb do sth 帮某人做某事 I always help my mother wash the dishes. 我总是帮我妈妈洗碗。 e, let sb do sth 让某人做某事 My mother never let me stay alone at home. 我妈妈从来不让我一个人呆 在家里。 f, make sb do sth 迫使某人做某事 The teacher always makes the students do lot of homework. 老师总是经 常让我们做很多作业。 2.动词的-ing形式
第一类直接加ing 1.look-looking 2.catch-catching 3.do-doing 4.play-playing 5.go-going 6.buy-buying 7. say-saying 8.see-seeing 9.bring-bringing 10.help-helping 11.sing-singing 12.draw-drawing 13.work-working 14.watch-watching 15.clean-cleaning 16.learn-learning 17.jump-jumping 18.be-being 19.fly-flying 20.stick-sticking 21.collect-collecting 22.cry-crying 23.walk-walking 24.build-building 25.hunt-hunting 26.fish-fishing 27.eat-eating 28.listen-listening 29.read-reading 30.stand-standing 第二类以e结尾的，去掉e，再加ing 1.ride-riding 2.bake-baking 3.shake-shaking 4.have-having 5.dance-dancing 6.write-writing 7.make-making https://www.doczj.com/doc/1e18492482.html,e-coming 9.take-taking
第三类单独记最后一个字母重复，再加ing 1.swim-swimming 2.get-getting 3.run-running 4.put-putting
动词-ing形式的被动式 在上个单元我们学习了动词不定式的被动式，今天我们一起来学习动词-ing形式的被动式。[看一看] 请看下列句子，看看动词-ing形式的被动式在各句中作什么成分。 1. So being killed by sharks was a common occurrence. 2. He didn’t mind being left at home. 3. That building being repaired is our library. 4. Being protected by a thick wall, they felt they were quite safe. 5. Having been given such a good chance, how could she let it slip away? [讲一讲] 动词-ing形式的被动式在句中可以作主语（如句1）、作宾语（如句2）、作定语（如句3）、作状语（如句4和句5）。此外，动词-ing形式的被动式还可以在句中构成复合宾语。如：You’ll find the topic being discussed e verywhere. 你会听到到处都在讨论这个问题。 He often watched the boats being unloaded. 他常常看轮船卸货。 As we approached the village we saw new houses being built. 走近村子时我们看到正在盖新房。 此外，在want, need, deserve, require等动词后，尽管表示的是被动含义，我们却用动词-ing形式。如： My pen needs filling. 我的笔该上墨水了。 The point deserves mentioning. 这点值得提一下。 This problem requires studying with great care. 这问题需要仔细研究。 在worth这个形容词后情形也是这样： Her method is worth trying. 她的方法值得试一下。