被动语态的讲解篇

初中被动语态讲解

初中被动语态讲解 -CAL-FENGHAI-(2020YEAR-YICAI)_JINGBIAN

被动语态一．概念：英语动词有两种语态，即主动语态(The Active Voice)与被动语态（The Passive Voice)。主动语态表示主语是动作的执行者;被动语态表示主语是动作的承受者。例：1. They make trains in Xi’an. >> Trains are made in Xi’an by them. 2.Xm beats Xx evey day. >> Xx is beaten by Xm every day. 二．构成 be + done (p.p.--及物动词的过去分词）一般现在时—— am／is ／are + v.p.p. 一般过去时—— was／were +v.p.p. 一般将来时—— will be／be going to be + v.p.p. 过去将来时——would be/was,were going to be + v.p.p 现在进行时——am/is/are being + v.p.p. 过去进行时——was/were being+ v.p.p. 现在完成时—— have/has +been+ v.p.p 情态动词—— aux.v. (must／can／could／may…) + be + v.p.p. 三．被动语态的使用 1. 当我们不知道或没有必要指出谁是动作的执行者时；例：1. His car was stolen last night. 2. Basketball is played in most countries. 2. 动作的承受者是谈话的中心（常由by引起）例：1. A lot of articles (that) we have learned were written by Lu Xun. 四．不用被动语态的情况 1. 某些及物动词+ adv表主动，特别是后加副词（如well， easily等）时。主动语态有被动含义，这类动词常见的有sell，write，wear，wash，photograph, clean, cook, cut 例：1. This book sells well. 2.Your pen writes really well/smoothly. 3.This dress (that) my mom bought for me wears well 4.She does not photograph well. 5.The cheese doesn’t cut easily. It’s too soft. 句子是主谓结构时，不用被动语态。常见的谓语动词有：happen, take place, (dis)appear, rise, break out, come about, come true, come out, run out, turn out 例：1. A traffic accident happened just now. 2. Great changes are taking place in my hometown. 3. He disappears. 4. When a gay person comes out, they let people know that he is a gay. 3. 连系动词无被动：感官系动词：look、feel、sound、smell、taste “表变化的系动词”：become、grow、turn、fall、get “表保持的系动词”：keep, reamain, stay ④ prove + 形容词，名词或不定式五．注意

英语动词被动语态专项及解析

英语动词被动语态专项及解析一、动词被动语态 1．The Hong Kong—Zhuhai—Macao Bridge in 2018. We are proud of it. A. is completed B. is completing C. was completed D. completes 【答案】 C 【解析】【分析】句意：港珠澳大桥竣工于2018年。我们为此感到骄傲。complete，完成，竣工；动词；与the Hong Kong—Zhuhai—Macao Bridge 有动宾关系，且后者作主语，谓语动词要用被动语态be+动词的过去分词；由2018提示可知要用一般过去时，故选C。【点评】考查一般过去时的被动语态。 2．The students of Class One_________ how to do the experiment in class yesterday． A. taught B. was taught C. were taught 【答案】 C 【解析】【分析】句意是：在昨天的课堂上学生们被教了怎样做实验。根据句意可知用被动语态，主语students 是名词复数形式，be 动词用 were，故选C。【点评】考查一般过去时的被动语态的用法。 3．He has ordered a watch on line for his father and it _______ to him before Father's Day. A. send B. will be sent C. was sent D. sent 【答案】 B 【解析】【分析】句意：他在网上为父亲订了一块表。将在父亲节前寄给他。It指代的是“表”，作主语，与谓语动词send是逻辑上的动宾关系，it是其承受者，用被动语态；从时态上看，表将在父亲节前寄给他，用一般将来时态，故选B。 4．----Don't smoke here, Dad. Smoking _____ in public places. ----Oh, sorry. I'll stop right now. A. isn't allowed B. aren't allowed C. doesn't allow 【答案】 A 【解析】【分析】句意:----不要在这儿吸烟，爸爸。在公共场所不允许吸烟。----哦，对不起，我马上停止。“不允许吸烟”，吸烟smoking在句中作主语，用被动语态。动名词短语smoking作主语，谓语用三人称单数.故选A 5．Over $30,000 ______ for a children's hospital by a British girl several months ago. A. is raised B. was raised

初中英语被动语态讲解与练习

初中被动语态语法讲解 (一) 语态分类英语动词有两种语态，主动语态和被动语态。主动语态表示主语是动作的执行者，被动语态表示主语是动作的承受者。如： They will build a new bridge over the river. (主动) A new bridge will be built over the river. (被动) 汉语中常用“被”、“给”、“由”、“受”等词用来表示被动，而英语用：助动词be + 及物动词的过去分词构成。 (二) 被动语态的时态、人称和数的变化主要体现在be的变化上，其形式与系动词be的变化形式完全一样。不同时态的被动语态，列表如下：一般现在时：am / is / are + done 一般过去时：was / were + done 一般将来时：shall / will + be done 一般过去将来时：should / would + be done 现在进行时：am / is / are + being + done 过去进行时：was / were + being + done 现在完成时：have / has + been + done 过去完成时：had + been + done 将来完成时：shall / will + have been + done 过去将来完成时：should / would + have been + done ［注］被动语态没有将来进行时和过去将来进行时。 (三)常见的八种时态中的被动语态 1. 一般现在时： (1)People grow rice in the south of the country. Rice is grown in the south of the country. (2)The school doesn't allow us to enter the chemistry lab without a teacher. We are not allowed to enter the chemistry lab without a teacher. 2. 一般过去时： (1)They agreed on the building of a new car factory last month. The building of a new car factory was agreed on last month. (2)The students didn't forget his lessons easily. His lessons were not easily forgotten 3. 一般将来时： (1)They will send cars abroad by sea. Cars will be sent abroad by sea. (2)They will give plenty of jobs to school-leavers. Plenty of jobs will be given to school-leavers. 4. 过去将来时： (1)The manager said they would complete the project by the end of the year. The manager said the project would be completed by the end of the year. (2) The workers told me they would mend the car as soon as possible. The workers told me that the car would be mended as soon as possible. 5. 现在进行时：

初中英语被动语态讲解(精心整理)

被动语态专题 ◆定义语态是动词的一种形式，表示主语和谓语之间的关系。主动语态和被动语态。主动语态表示主语是谓语的执行者。被动语态表示主语是谓语动作的承受者。 ◆被动语态的构成：助动词be+及物动词的过去分词 ◆被动语态的时态： “主动语态变被动语态，时态不变动”，即助动词be 的时态要跟原主动语态中的时态保持一致。请看下表： ◆主动语态变被动语态的方法第一步：先确定主动句的主、谓、宾，找出其中的谓语动词。第二步：把主动句中的宾语变为被动句的主语，若宾语是人称代词，变宾格为主格。第三步：把主动句中的谓语动词变为“助动词be +及物动词的过去分词”，时态不变。第四步：把主动句中的主语变为被动句中介词by的宾语(没必要说出动作的执行者时，“by+宾语”在句中常省略。)，若主语是人称代词，应把主格变为宾格。

请对比下面的主动句和被动句：主动语态：They(主语)grow(谓语)tea(宾语)in the southeast of China. 被动语态：Tea(主语)is grown(谓语)by them in the southeast of China. 随堂演练（把下列句型改为被动句） 1.Bruce writes a letter every week. → 2.Li Lei mended the broken bike this morning. → 3.We grow trees every spring. → 4.My mother cleans our room every morning. → 补充： ①S + V +IO +DO双宾语的结构变为被动语态时，可把其中一个宾语变为被动语态的主语。若将直接宾语变为主语，需根据习惯在原间宾语前加上介词to或for 。用to的常见词有：give, show, send, lend, pass, pay, teach, throw, bring ……. 用for的常见词有：design, choose, sing, buy, get, cook …… to him by Mary. for her by her father. 随堂演练：（1）He gave me a book. →____________________________________(间接宾语作主语) →____________________________________ (直接宾语作主语) （2）My father bought me a new bike. →____________________________________(间接宾语作主语) →____________________________________ (直接宾语作主语)

被动语态讲解与专项练习(带答案)

被动语态专项练习（二） Ⅰ单项选择 1. Good books ____ again and again. A. should be readed B. should be read C. must read D. ought to read 2. The children ____ by the nurse. A. were looked B. looked after C. were looked after D. looked 3. He ___ some pieces of advice, but he ____ to them. A. gave, didn't listen B. was given, wasn't listened C. give, wasn't listened D. was given, didn't listen 4. When____ the accident _____ ? A. was, happen B. did, happen C. is, happen D. was, happened 5. The question ____ by us soon. A. is going to discuss B. will discuss C. is going to be discussed D. has been discussed 6. The lab ____ about five years ago. A. was builded B. was built C. builds D. has been built 7. A lot of tall buildings _____ in his hometown in the last three years. A. have set up B. have been set up C. were set up D. set up 8. They ____ printing 500 copies by the end of last month. A. had finished B. have finished C. had been finished D. have been finished 9. Rice ___ also _____ in their hometown. A. is…grown B. is…grew C. was…grew D. was…grown 10. He ____ by the teachers. A. is always praised B. praises C. have been praised D. always is praised 11. Great changes ____ place. Many new schools____ . A. have taken, have been opened B. take, are open C. are taken, open D. have been taken, are opened 12. The picture______ in October, 1996. A. was taking B. had been taken C. was taken D. had taken 13. We can't use the bridge now, because it______ . A. has been repaired B. is repairing C. is repaired D. is being repaired 14. I ______the way to the railway station by a policeman. A. was shown B. showed C. have shown D. was showing 15. The war______ in 1941. A. broke out B. had been broken out C. was broken out D. had broken out 16. When water______ , it will be changed into vapour. A. is heated B. heating C. has heated D. heats 17. We can't enter the room because its door______ . A. locked B. locks C. is locked D. is locking

初中被动语态详细讲解.

语法专练---被动语态一、语态概述我吃了一个苹果，那现在苹果怎样了？苹果被我吃了。正如汉语中的被字句，英语中的“被字句”我们称之为被动语态。英语中有两种语态：主动语态和被动语态。英语的语态是通过动词形式的变化表现出来的。主动语态表示主语是动作的执行者。巧记为：主动、主动、主去动。例如：Many people speak English. 谓语：speak的动作是由主语many people来执行的。被动语态表示主语是动作的承受者，即行为动作的对象。巧记为：被动、被动、主被动。例如：English is spoken by many people.主语English是动词speak的承受者。例如：He opened the door.他开了门。(主动句) The door was opened.门被开了。(被动句) 二、被动语态的构成被动语态由“be＋及物动词的过去分词”构成。不及物动词本身没有被动语态。及物动词---本身意义不完整，后必须带宾语，有些还可以带双宾。不及物动词---本身意义完整，不需要带宾语，如带宾语必须通过介词。人称、数和时态的变化是通过be的变化表现出来的。现以eat为例说明被动语态在各种时态中的构成。一般现在时：am／is／are＋eaten 一般过去时：was／were＋eaten 一般将来时：will/shall/be going to be＋eaten 过去将来时：would/should/be going to be＋eaten 现在进行时：am／is／are being＋eaten 过去进行时：was／were being＋eaten 现在完成时：have／has been＋eaten 过去完成时：had been＋eaten 歌诀是：被动语态be字变，过去分词跟后面。三、被动语态的用法 (1)不知道或没有必要说明动作的执行者是谁。例如：some new computers were stolen last night. 一些新电脑在昨晚被盗了。(不知道电脑是谁偷的) This book was published in 1981.这本书出版于1981年。（没有必要或说出出版者） (2)强调动作的承受者，而不强调动作的执行者。例如：The window was broken by mike.窗户是迈克打破的。 This book was written by Lunxun.这本书是他写的。 Eight hours per day for sleep must be guaranteed.每天8小时睡眠必须得到保证。歌诀：谁做的动作不知道，说出谁做的没有必要；动作承受者需强调，被动语态运用到。 (3) 为了更好地安排句子。例The well-known person got on the bus and was immediately recognized by people. （一个主语就够了）四、主动语态变被动语态的方法 (1)把主动语态的宾语变为被动语态的主语。 (2)把谓语变成被动结构(be＋过去分词) (根据被动语态句子里的主语的人称和数，以及原来主动语态句子中动词的时态来决定be的形式)。 (3)把主动语态中的主语放在介词by之后作宾语，将主格改为宾格。例如： All the people laughed at him. ---- He was laughed at by all people. They make the bikes in the factory. ----The bikes are made by them in the factory. 歌诀是：宾变主，主变宾，by短语后面跟。谓语动词变被动，be后“过分”来使用。五、含有情态动词的被动语态

被动语态专项讲解练习(含答案)

专项复习:被动语态（Revision of the Passive Voice）【复习目标】1.熟悉常用时态的被动语态； 2.在题目中正确理解和运用被动语态【复习重点】常用时态的被动语态【复习难点】各个考点【复习步骤】一．基本概念复习 1.总结概念：谓语动词的执行者作主语，用语态；若谓语动词的承受者作主语，用语态。 2.总结结构：be+ done (be动词可以随时态、人称数的变化而变化) 二．考点复习考点一：含有可以带双宾语的动词的被动语态结构 1.在下列动词后，通常在间接宾语前用介词to: bring , give , lend , offer , pass , show , take , tell , send , teach等 2.在下列动词后，一般在间接宾语前用介词for buy , make , get , choose , cook , sing等

考点二：在感官动词see , watch , hear , notice , feel 及使役动词have , let , make等词后作宾语补足语的动词不定式都不带to , 但变被动语态后要还原上to 。考点三：含有动词短语的被动语态，切记不要将短语中的介词或副词忘掉或省略。考点四：有些谓语动词的主动形式表示被动意义 1.某些用来描述主语特征的不及物动词，常用其主动形式表达被动意义，这时主语通常是物。eg: sell , wash , read , write , 等 ?The books well． A. were sold B. sell C. have sold D. are being sold ?This coat _____ easily． A. has washed B. was washed C. washes D. is washed 2.表示状态特征的连系动词+ adj. / n.用主动形式表被动意义。eg: look , sound , feel , smell , taste 等 ①The steel(钢铁) _____ cold． A. is felt B. was feeling C. feels D. is being felt ②His plan _____ good． A. has sounded B. is sounding C. is sounded D. sounds 3.表示“发生，进行”的不及物动词用主动形式表被动意义。eg: happen , take place , come out , come true等考点五：含有被动意义的“have / get + 宾语+ done” 考点六：表示客观的说明常用“It’s + done+…..” 据说….. 据报道……. 众所周知……. 据推测说….. 大家都相信…… 考点七：某些动词可以用-ing 形式表被动意义三．练习题 (一)选择题(A)

被动语态详细讲解(基础讲解)上课讲义

被动语态详细讲解(基础讲解)

被动语态一、语态概述我吃了一个苹果，那现在苹果怎样了？苹果被我吃了。正如汉语中的被字句，英语中的“被字句”我们称之为被动语态。英语中有两种语态：主动语态和被动语态。英语的语态是通过动词形式的变化表现出来的。主动语态表示主语是动作的执行者。巧记为：主动、主动、主去动。例如：Many people speak English. 谓语：speak的动作是由主语many people来执行的。被动语态表示主语是动作的承受者，即行为动作的对象。巧记为：被动、被动、主被动。例如：English is spoken by many people.主语English是动词speak的承受者。例如：He opened the door.他开了门。(主动句) The door was opened.门被开了。(被动句) 二、被动语态的构成被动语态由“be＋及物动词的过去分词”构成。不及物动词本身没有被动语态。及物动词---本身意义不完整，后必须带宾语，有些还可以带双宾。不及物动词---本身意义完整，不需要带宾语，如带宾语必须通过介词。人称、数和时态的变化是通过be的变化表现出来的。现以eat为例说明被动语态在各种时态中的构成。一般现在时：am／is／are＋eaten 一般过去时：was／were＋eaten 一般将来时：will/shall/be going to be＋eaten 过去将来时：would/should/be going to be＋eaten 现在进行时：am／is／are being＋eaten 过去进行时：was／were being＋eaten 现在完成时：have／has been＋eaten 过去完成时：had been＋eaten 歌诀是：被动语态be字变，过去分词跟后面。三、被动语态的用法 (1)不知道或没有必要说明动作的执行者是谁。

初中英语被动语态专项讲解

初中英语被动语态专项讲解一、语态概述语态是动词的一种形式,表示句子之中主语和谓语动词的关系。英语有两种语态:主动语态和被动语态主动语态表示主语是动作的发出者(或执行者)eg:Many people speak Chinese.谓语:speak 的动作是由主语many people来执行的。被动语态表示主语是动作的承受者,即行为动作的对象。eg:Chinese is spoken by many people.主语English是动词speak的承受者。二、被动语态的构成被动语态由“助动词be+及物动词的过去分词”构成。人称、数和时态的变化是通过be的变化表现出来的。(被动语态的否定式和疑问式均由助动词或第一个助动词构成。) 各种时态的被动语态构成: 1.一般现在时:am/is/are+及物动词的过去分词 Eg:I'm asked to take care of myself. Football is played all over the world 2.一般过去时:was/were+及物动词的过去分词 Eg:This house was built in 1958. His leg was broken in an accident.

3.一般将来时:will/shall be+及物动词的过去分词 Eg:More factories will be built in our city. He will be taken to hospital tomorrow. 4.现在进行时:am/is/are being+及物动词的过去分词. Eg: A road is being built around the mountain. Many new houses are being built in this city 5.过去进行时:was/were being+及物动词的过去分词 Eg:The meeting was being held when I was there. We were being trained this time last year. 6.现在完成时:have/has been+及物动词的过去分词 Eg:His book has been translated into many foreign languages. The prices of many goods have been cut again . 7.过去完成时:had been + 及物动词的过去分词 Eg:A new school had been set up by the end of last year. 8.含有情态动词的被动语态:情态动词+be+及物动词的过去分词 Eg:The rubbish can be put into the dustbin over there. 三、被动语态的基本用法

被动语态专项练习及答案详解

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初中被动语态详细讲解上课讲义

初中被动语态详细讲解

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初中英语被动语态专项讲解一、语态概述语态是动词的一种形式，表示句子之中主语和谓语动词的关系。英语有两种语态：主动语态和被动语态主动语态表示主语是动作的发出者（或执行者）eg：Many people speak Chinese.谓语：speak 的动作是由主语many people来执行的。被动语态表示主语是动作的承受者，即行为动作的对象。eg：Chinese is spoken by many people.主语English是动词speak的承受者。二、被动语态的构成被动语态由“助动词be＋及物动词的过去分词”构成。人称、数和时态的变化是通过be的变化表现出来的。(被动语态的否定式和疑问式均由助动词或第一个助动词构成。) 各种时态的被动语态构成： 1.一般现在时：am／is／are＋及物动词的过去分词 Eg：I'm asked to take care of myself. Football is played all over the world 2.一般过去时：was／were＋及物动词的过去分词 Eg：This house was built in 1958. His leg was broken in an accident. 3.一般将来时：will／shall be＋及物动词的过去分词 Eg：More factories will be built in our city. He will be taken to hospital tomorrow. 4.现在进行时：am／is／are being＋及物动词的过去分词. Eg： A road is being built around the mountain. Many new houses are being built in this city 5.过去进行时：was/were being＋及物动词的过去分词 Eg：The meeting was being held when I was there. We were being trained this time last year. 6.现在完成时：have／has been＋及物动词的过去分词 Eg：His book has been translated into many foreign languages. The prices of many goods have been cut again . 7.过去完成时：had been + 及物动词的过去分词 Eg：A new school had been set up by the end of last year. 8.含有情态动词的被动语态：情态动词+be+及物动词的过去分词 Eg：The rubbish can be put into the dustbin over there. 三、被动语态的基本用法一般来说，在我们日常生活中，能用主动语态的时候就尽量不去用被动语态。只有在下列情况中我们才用被动语态： 1.不知道动作的执行者是谁。 eg：1).Some new computers were stolen last night.一些新电脑在昨晚被盗了。 2).This bridge was founded in 1981.这座桥竣工于1981年。

初中被动语态讲解及练习

被动语态一、概念：语态是动词的一种形式，它表示主语和谓语的关系。语态有两种：主动语态和被动语态。如果主语是动作的执行者，或者是说动作是由主语完成的，要用主动语态；如果主语是动作的承受者，或者是说动作不是由主语而是由其他人完成的，则用被动语态。二、主动句变为被动句的步骤： 1.把原主动句中的宾语变为被动句的主语 2.把动词变为被动形式即be +过去分词，并注意其人称和数随主语的变化，而动词的时态则保持不变。 3.原主动句的主语如需要则放在by后面以它的宾格形式出现（注代词的宾格），如不需要则可省略。 4.其它的成分（定语、状语）不变。三、被动语态的用法： 1. 一般现在时的被动语态构成：is / am / are + 及物动词的过去分词 We clean our classroom every day. My mother asks me to study hard. 2. 一般过去时的被动语态构成：was / were + 及物动词的过去分词 A new shop was built last year. 3. 现在完成时的被动语态构成：has / have + been + 及物动词的过去分词 This book has been translated into many languages. Many man-made satellites have been sent up into space by many countries. 4. 一般将来时的被动语态构成：will+ be + 及物动词的过去分词 A new hospital will be built in our city. Many more trees will be planted next year. 5. 含有情态动词的被动语态构成：情态动词+ be + 及物动词的过去分词 Young trees must be watered often. Your mistakes should be corrected right now. The door may be locked inside. Your homework can be handed in tomorrow. 6. 现在进行时的被动语态构成：am / is / are + being + 及物动词的过去分词 7. 不定式的被动语态：to + be + 及物动词的过去分词 There are two books to be read. There are twenty more trees to be planted. 3. 感官动词或使役动词使用省略to的动词不定式，主动语态中不带to ，但变为被动语态时，须加上to 。例：make somebody do something→somebody+ be +made to do something see somebody do something→somebody +be +seen to do something A girl saw my wallet drop when she passed by.→My wallet was seen to drop by a girl when she passed by. The boss made the little boy do heavy work.→The little boy was made to do heavy work by the boss. 4. 如果是接双宾语的动词改为被动语态时，可以使用直接宾语也可以使用间接宾语作被动语态句子的主语。使用直接宾语(物)作主语时，要在动词后加上介词，这个介词是由与其搭配的动词决定。 He gave me a book. →A book was given to me by him. He showed me a ticket. →A ticket was shown to me by him. My father bought me a new bike. →A new bike was bought for me by my father.

初三被动语态详细讲解

初三英语被动语态练习（2016.10.23）语法专练---被动语态一、语态概述我吃了一个苹果，那现在苹果怎样了？苹果被我吃了。正如汉语中的被字句，英语中的“被字句”我们称之为被动语态。英语中有两种语态：主动语态和被动语态。英语的语态是通过动词形式的变化表现出来的。主动语态表示主语是动作的执行者。巧记为：主动、主动、主去动。例如：Many people speak English. 谓语：speak的动作是由主语many people来执行的。被动语态表示主语是动作的承受者，即行为动作的对象。巧记为：被动、被动、主被动。例如：English is spoken by many people.主语English是动词speak的承受者。例如：He opened the door.他开了门。(主动句) The door was opened.门被开了。(被动句) 二、被动语态的构成被动语态由“be＋及物动词的过去分词”构成。不及物动词本身没有被动语态。及物动词---本身意义不完整，后必须带宾语，有些还可以带双宾。不及物动词---本身意义完整，不需要带宾语，如带宾语必须通过介词。人称、数和时态的变化是通过be的变化表现出来的。现以eat为例说明被动语态在各种时态中的构成。一般现在时：am／is／are＋eaten 一般过去时：was／were＋eaten 一般将来时：will/shall/be going to be＋eaten 过去将来时：would/should/be going to be＋eaten 现在进行时：am／is／are being＋eaten 过去进行时：was／were being＋eaten 现在完成时：have／has been＋eaten 过去完成时：had been＋eaten 歌诀是：被动语态be字变，过去分词跟后面。三、被动语态的用法 (1)不知道或没有必要说明动作的执行者是谁。例如：some new computers were stolen last night. 一些新电脑在昨晚被盗了。(不知道电脑是谁偷的) This book was published in 1981.这本书出版于1981年。（没有必要或说出出版者） (2)强调动作的承受者，而不强调动作的执行者。例如：The window was broken by mike.窗户是迈克打破的。 This book was written by Lunxun.这本书是他写的。 Eight hours per day for sleep must be guaranteed.每天8小时睡眠必须得到保证。歌诀：谁做的动作不知道，说出谁做的没有必要；动作承受者需强调，被动语态运用到。 (3) 为了更好地安排句子。例The well-known person got on the bus and was immediately recognized by people. （一个主语就够了）四、主动语态变被动语态的方法 (1)把主动语态的宾语变为被动语态的主语。 (2)把谓语变成被动结构(be＋过去分词) (根据被动语态句子里的主语的人称和数，以及原来主动语态句子中动词的时态来决定be的形式)。 (3)把主动语态中的主语放在介词by之后作宾语，将主格改为宾格。例如： All the people laughed at him. ---- He was laughed at by all people.