【精品】英语被动语态用法总结(完整)
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英语被动语态用法总结(完整)英语被动语态用法总结(完整)一、单项选择被动语态1.Mr. Wills, who was being helped up onto the platform to take the prize, looked as if he by lightning.A.was just struck B.were just struckC.would just be struck D.had just been struck【答案】D【解析】【详解】考查过去完成时态的被动语态。
句意:威尔斯先生被扶上了讲台,接受了这个奖项,他看起来就像是被闪电击中了一样。
此处as if(好像)引导方式状语从句,用虚拟语气,与过去的事实相反,用过去完成时态,且主语he和strike之间是被动关系,故答案为D。
2.At the awarding ceremony held in Tokyo, the scientists were surprised by what ______ in science and technology.A.has discovered B.has been discoveredC.had discovered D.had been discovered【答案】D【解析】句意:在东京举行的颁奖仪式上,科学家们惊讶于科学技术的发现。
科学家们感到惊讶是过去式,故科学技术发现用过去完成时,what于动词discover是被动关系,故选D。
3.The new library ________; it will be open next year.A.had been built B.was builtC.was being built D.is being built【答案】D【解析】考查时态和语态。
句意:图书馆正在建设中;明年开放。
根据后面一句可推知,图书馆是正在建设中,所以要用进行时,图书馆是被建的,要用被动。
英语语法被动语态考点总结标题:英语语法被动语态考点总结一、被动语态的基本概念在英语语法中,被动语态(Passive Voice)是一种动词形式,用于表达主语是动作的承受者而非执行者。
其基本结构为“be + 过去分词”。
例如:“The book is read by Mary.”(这本书被玛丽阅读。
)二、被动语态的构成方式1. 一般现在时的被动语态:am/is/are + 过去分词。
例句:The cake is made by my sister every day.2. 一般过去时的被动语态:was/were + 过去分词。
例句:The house was built in 1980.3. 现在完成时的被动语态:have/has been + 过去分词。
例句:The project has been completed successfully.4. 一般将来时的被动语态:will be + 过去分词。
例句:The meeting will be chaired by the manager tomorrow.5. 过去进行时的被动语态:was/were being + 过去分词。
例句:At that time,a new building was being constructed on the campus.6. 现在完成进行时的被动语态:have/has been being + 过去分词。
例句:For the past two hours, the experiment has been being conducted by the researchers.三、被动语态的应用场景1. 不知道或无需提及动作的执行者时。
2. 强调动作的承受者或者结果时。
3. 在科技论文、新闻报道、官方文件等正式文体中常使用被动语态以保持客观公正。
四、被动语态的转换与注意事项主动语态可以转换为被动语态,反之亦然。
英语被动语态用法总结英语被动语态是一种常用的语法结构,它可以改变句子主动的行为和动作焦点,使得句子更具多样性、更富表现力。
被动语态的构成方式是通过谓语动词的变化,将其转化为被动形式。
本文将详细总结英语被动语态的用法,包括其构成、使用时的注意事项以及常见的用法场景。
一、被动语态的构成1. be动词:根据句子的时态和人称变化,常用的be动词有am, is, are, was, were, has been, have been, had been等。
需要根据句子的主语和时态选择合适的be动词。
例如:- The book is being read by him.(现在进行时态)- The book was read by him. (过去时态)- The book has been read by him. (现在完成时态)2.过去分词:表示动作或状态的完成,常常是动词的过去分词形式。
过去分词的构成方式有规则形式和不规则形式。
例如:- Regular verbs(规则动词):cook-cooked, clean-cleaned, play-played等。
- Irregular verbs(不规则动词):go-gone, eat-eaten, do-done 等。
二、被动语态的使用时的注意事项在使用被动语态时需要注意以下几个方面:1. 动作的执行者:被动语态的句子通常省略或不明确表示动作的执行者。
如果需要明确动作的执行者,可以使用介词“by”加上动作的执行者作为介词短语的形式。
例如:- The cake was made by her.(动作执行者为her)- The report will be submitted by us.(动作执行者为us)2.句子主语:被动语态的句子主语通常是动作的承受者或受影响的对象。
因此,在主动语态中,如果句子主语是一个人或物,而且在被动语态中要强调受影响,则主语变为句子的宾语。
初中英语语法——被动语态用法总结归纳被动语态是英语语法中的重要部分,学好被动语态的用法可以帮助学生更准确地理解和使用英语。
下面是被动语态用法的详细总结归纳。
1.被动语态的构成:被动语态由“助动词be+过去分词”构成,根据时态的不同,助动词be的形式也会发生变化。
如:- 一般现在时:am/is/are + 过去分词- 一般过去时:was/were + 过去分词- 一般将来时:will be + 过去分词- 现在进行时:am/is/are being + 过去分词- 过去进行时:was/were being + 过去分词- 现在完成时:have/has been + 过去分词- 过去完成时:had been + 过去分词2.被动语态的用法:被动语态用来强调动作的承受者(主语)而不是执行者,并且常用于以下情景:2.1当我们不知道或不关心动作的执行者时。
例如:The cake was eaten.(蛋糕被吃了。
)2.2当动作的执行者已知,但我们要强调动作的承受者时。
例如:The house was built by my grandfather.(这座房子是我爷爷建的。
)2.3当我们要避免使用第一人称或第二人称时。
例如:Mistakes were made.(犯了错误。
)3.被动语态的注意事项:在使用被动语态时,需要注意以下几点:3.1表示动作的动词要用过去分词形式。
过去分词的形式有规律变化和不规律变化两种。
如:- 规律变化:原形 + ed,例如:played, watched, called- 不规律变化:需要记忆,例如:born, written, eaten3.2被动句的主语是动作的承受者,通常出现在句子的前面。
如:- 主动语态:I cooked dinner.(我做了晚饭。
)- 被动语态:Dinner was cooked by me.(晚饭是我做的。
)3.3 不及物动词不能构成被动语态。
不及物动词没有宾语,因此不能强调动作的承受者。
初中英语语法——被动语态用法总结归纳被动语态由助动词be加及物动词的过去分词构成,助动词be有时态,人称和数的变化。
被动语态的时态是由be的时态决定的,be是什么时态,全句就是什么时态,be动词后面的过去分词不变。
1.各种时态的被动语态结构如下:一般现在时的被动语态:主语+am / is / are (not)+过去分词一般过去时的被动语态:主语+was / were +过去分词现在完成时的被动语态:主语+have / has +been +过去分词一般将来时的被动语态:主语+will +be +过去分词过去将来时的被动语态:主语+would / should + be +过去分词过去进行时的被动语态:主语+was / were + being +过去分词过去完成时的被动语态:主语+had + been +过去分词情态动词的被动语态:情态动词+be+过去分词2.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,不用by+动作执行者短语。
Football is played widely all over the world。
全世界都广泛地踢足球。
(2)强调动作的承受者。
The bank was robbed yesterday afternoon。
昨天下午这家银行遭到抢劫。
(3)作客观说明时,常采用一种被动语态句型。
It is reported that about twenty children have died of flu in the USA。
据报道美国大约二十名儿童死于流感。
3.主动语态的句子变为被动语态的步骤(1)把原句中的宾语变为主语(2)动词改为被动形式,即be+过去分词(3)原来的主语,如果需要的话,放在by后面;如果没必要,可省略。
英语被动语态用法总结(完整)一、单项选择被动语态1.As is estimated, more than 20 million shared bikes ______ into operation nationwide by 2025. A.will have been put B.will have put C.have been put D.will be putting【答案】A【解析】【详解】考查动词时态语态。
句意:据估计,到2025年为止,全国将有2000多万辆共享单车投入运营。
根据by 2025可知应用将来完成时,且主语与谓语动词构成被动关系,故应为将来完成时的被动语态。
故选A。
2.Our teacher keeps telling us that the future to the well-educated.A.belonging B.belongs C.is belonging D.is belonged【答案】B【解析】考查短语:belong to 属于,没有进行时态没有被动语态。
故答案选B。
3.________scores of times, but Derek still couldn’t understand how to use past participle in a concrete situation.A.Having explained B.Having been explainedC.Though it was explained D.It was explained【答案】D【解析】因为有连词but,前面应是完整的句子,排除A,B; Though不能和but同时使用,所以选D。
4.一When shall we start the restoration of the historic buildings?一Not until our plan________ by the committee.A.will be approved B.approvesC.is to approve D.has been approved【答案】D【解析】这题考查时态语态,our plan和approve是被动关系,用被动,选择A或D。
英语被动语态用法总结(完整)一、单项选择被动语态1.This kind of cloth_______well and large quantities of the cloth ________.A.is sold;have been soldC.sells;have been sold【答案】C【解析】【详解】考查动词的时态语态。
句意:这种布销路很好,已售出大量。
XXX等词在表示事物的状态、特点时,可以用主动表被动,因此第一个空应选sells;第二空表示“出售,卖”的动作,用被动语态,且强调对现在的影响应该用现在完成时态,故正确答案为C。
B.is sold; has been soldD.sells ; has been sold2.XXX us that the future to the well-educated.A.belonging【答案】B【剖析】考查短语:XXX属于,没有进行时态没有被动语态。
故答案选B。
XXX of each country should be by its own people.A.elected B.settledXXX【答案】B【剖析】考察动词。
句意为:列国是务应由本人国家的人们办理。
由句意可知,选settle,意为“办理”。
elect选举;develop开展;contain包罗,控制。
故选B。
4.XXX, the XXX ______ XXX.A.has discovered B.has been discoveredXXX【答案】D【剖析】句意:在东京进行的颁奖典礼上,科学家们诧异于科学手艺的发现。
科学家们感到诧异是过去式,故科学手艺发现用过去完成时,what于动词discover是被动干系,故选D。
5.The new library ________; it will be open next year.A.had been built B.was builtC.was being built D.is being built【谜底】D【剖析】考察时态和语态。
被动语态的基本用法(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,汉语中常用“被”“由”等词用来表示被动,而英语用:“助动词be + 动词的过去分词”构成。
如:They will build a new bridge over the river. (主动)A new bridge will be built over the river. (被动)(二) 被动语态的时态、人称和数的变化主要体现在be上,实义动词始终用过去分词形式。
歌诀:被动语态be字变,过去分词跟后面。
例如:一般现在时:am / is / are +动词的过去分词(1)People grow rice in the south of the country.(主动语态)Rice is grown (by people)in the south of the country.(被动语态)(2)We water flowers every day.Flowers are watered (by us) every day.一般过去时:was / were +动词的过去分词He opened the door.他开了门。
(主动语态)The door was opened.门被开了。
(被动语态)含情态动词的被动语态:情态动词+be+动词的过去分词(1)You must hand in your homework after class.Your homework must be handed in after class.(2)He can write many letters with the computer.Many letters can be written with the computer by him.一般将来时:shall / will + be+动词的过去分词或者is/are going to+动词的过去分词(1)They will hold a meeting tomorrow.A meeting will be held (by them) tomorrow.(2)They will give plenty of jobs to school-leavers.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(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。
一、谓语动词用主动表被动的五种情形(1) 某些连系动词(如look, sound, smell, feel, taste, prove等)要用主动表被动,因为连系动词为不及物动词,它们没有被动语态形式:That dog looks dangerous. 那只狗看起来很危险。
Your idea sounds a good one. 你的想法听起来很好。
My advice proved to be wrong. 我的意见证实是错的。
(2) 当open, close, shut, lock, move等用作不及物动词且表示主语的某种属性时,通常用主动形式表示被动意义:The door won't shut. 这门关不上。
The supermarket doors shut automatically. 超市的门是自动关的。
【注】该用法的不及物动词通常与can't, won't 等连用,注意它与用被动语态含义不同:The window won't shut. 这窗户关不上。
(说明主语的属性——窗户有问题了)The window won't be shut. 这窗户将不用关上。
(窗户本身没问题,只是不用关)有时可能用主动和被动形式均可,只是强调重点稍有不同:Suddenly the door opened. 突然门开了。
(不强调动作执行者)The door was suddenly opened. 门突然被打开了。
(强调动作执行者)(3) 当read, wash, clean, cook, cut, wear, carry等用作不及物动词且表示主语的某种属性时,通常要用主动形式表示被动意义:The cloth washes well. 这种布料好洗。
The book sells quickly. 这书销售得快。
This cheese doesn't cut easily. It's too soft. 这乳酪不容易切,太软了。
被动语态全解语态是动词的一种形式,表示句子中主语和谓语动词的关系,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。
只有及物动词才能用于被动语态。
一.被动语态的时态:1.一般现在时的被动语态:am /is/ are +动词的过去分词2.一般过去时的被动语态:was /were +动词的过去分词3.一般将来时的被动语态:will be +动词的过去分词4.现在进行时的被动语态:am /is /are +being +动词的过去分词5.现在完成时的被动语态:have /has +been +动词的过去分词6.情态动词的被动语态:情态动词+ be +动词的过去分词二.被动语态的基本用法:(1) 需要强调动作的承受者时The Great Wall is enjoyed by millions of people all over the world English is widely spoken in the world now.(2) 不知道或没必要指出动作的执行者时Mr. Wang is invited to the meeting today .The problem is dealt with now .(3) 当说话人需要强调客观时It is said that she was a beauty when she was young .三.主动主动语态变被动语态的变法:口诀:宾变主,主变宾,谓变be done ,时不变,数格必须随被变。
注:1.主动、被动的时态要一致。
2.主动、被动的句式要一致。
3.变成的被动语态的主语与谓语在单复数上保持一致。
语态转换不被动语态的步骤1, 把原主动句中的宾语转换为被动语态的主语2, 把动词改为被动语态形式即e+过去分词。
3, 原来主动语态句子中的主语,如果需要就放在by的后面以它的宾格形式出现(因为by是介词,后面需跟宾格作介词的宾语。
)以指明做事的人或物,如果没有必要,可以省略。
被动语态用法详解TENSE主动语态被动语态一般现在时be+V。
\V。
s am\is\are+V( p。
p)一般将来时will\be going to\be (about)to+V.will be +V (p.p)现在进行时am\is\are+V。
ing am\is\are+be ing+V(p。
p)一般过去时①was\were②V.ed was\were+V(p .p)现在完成时have\has+V.p.p have\has+bee n+V(p.p)过去完成时had+V。
p.p had+been+V (p。
p)过去进行时was\were+V。
ing was\were+bei ng+V(p。
p)情态动词情态动词+V.情态动词被动语态牢记一点,be加动词过去分词。
分析句中主和谓,承受者作主语即被动。
短语动词不可忘介、副词。
另有不及物动词,只有主动无被动.还要注意其时态,与主动语态全相同.不用被动语态的情况1)不及物动词或动词短语无被动语态(即多数的瞬间动词):appear, die(死亡),disappear (消失), end (vi. 结束), fail, happen, last, lie, remain, sit, spread, stand break out, come true, fall asleep, keep silence, lose heart, take place. After the fire, very little remained of my house。
比较: rise, fall, happen是不及物动词;raise, seat是及物动词。
(错)The price has been risen.(对)The price has risen。
(错)The accident was happened last week.(对)The accident happened last week。
被动语态的构成及用法被动语态是英语中一个常用的语法结构,它用来表达动作的承受者,而不是执行者。
在被动语态中,主语是动作的承受者,而动作的执行者则通常用介词"by"短语来表示或省略不表达。
被动语态的构成主要由以下几个要素组成:动词的过去分词形式、助动词"be"的适当形式和执行者(可省略)。
一、形成被动语态的助动词:1. 现在时态:- am/is/are + 过去分词- 例如:The book is written by him.(这本书是他写的。
)2. 过去时态:- was/were + 过去分词- 例如:The letter was sent yesterday.(这封信昨天被发送了。
)3. 现在完成时态:- has/have been + 过去分词- 例如:The house has been painted by a professional painter.(这栋房子已被专业画家粉刷。
)4. 过去完成时态:- had been + 过去分词- 例如:By the time we arrived, the food had been eaten.(我们到达时,食物已经被吃完了。
)5. 将来时态:- will be + 过去分词- 例如:The project will be completed by the end of the month.(这个项目将在本月底完成。
)二、被动语态的用法:1. 当执行者不确定或不需要强调时,常用被动语态。
- 例如:The window was broken.(窗户被打破了。
)2. 如果动作的执行者已经明确或可以通过上下文推测出来,也可以在被动语态中明确表示。
- 例如:The cake was made by my mother.(这个蛋糕是我妈妈做的。
)3. 在科学或学术写作中常用被动语态以强调被动的重要性。
- 例如:The experiment was conducted by a team of researchers.(这个实验是由一个研究团队进行的。
被动语态总结被动语态是英语中一个重要的语法结构,它在句子中被用来强调动作的承受者而不是执行者。
使用被动语态可以使句子更加灵活、简洁和优雅。
在本文中,我们将总结被动语态的常见用法和注意事项。
1. 被动语态的构成被动语态的构成需要用到助动词“be”,并将动词的原形转换为过去分词形式。
根据动词的时态,助动词“be”的形式也会发生变化。
以下是被动语态的几种形式:- 现在时态:am/is/are + 过去分词;- 过去时态:was/were + 过去分词;- 将来时态:will be + 过去分词;- 现在完成时:has/have been + 过去分词等。
2. 被动语态的用途2.1 强调动作的承受者被动语态通常用来强调动作的承受者,尤其是当承受者比执行者更重要或更受关注时。
例如:- 主动语态:She wrote the book.- 被动语态:The book was written by her.2.2 描述一般事实被动语态也用于描述一般事实,而不指明执行者。
例如:- 主动语态:People speak English all over the world.- 被动语态:English is spoken all over the world.2.3 忽略或模糊执行者有时候,我们可能想要忽略或模糊执行者的身份。
例如在新闻报道中,人们更关注事件本身,而不是具体的人物。
被动语态可以帮助实现这一点。
例如:- 主动语态:Someone stole my bike.- 被动语态:My bike was stolen.3. 注意事项3.1 指定执行者被动语态并不总是省略执行者的身份,有时候执行者是需要指出的。
这可以通过使用介词“by”来完成。
例如:- The cake was made by my mom.3.2 惯用搭配和固定用法一些动词在被动语态中频繁出现,几乎成为了惯用搭配或固定用法。
例如:- The decision was made.- The rules should be followed.3.3 被动语态的时态和时态的转换使用被动语态时,要根据需要使用相应的时态形式。
被动语态的具体用法总结1. 什么是被动语态被动语态是英语中的一种时态,用于表达主语是动作的接受者或受事者。
在被动语态中,谓语动词由”be”(根据时态的不同,可以是am, is, are, was, were, has been, have been, had been等)和过去分词构成。
2. 被动语态的基本结构被动语态的基本结构为:be + 过去分词。
例如: - Active: They repair the car. - Passive: The car is repaired by them.3. 被动语态的时态和人称变化被动语态可以根据时态和人称进行变化,即通过改变be动词的形式来表达不同的时态和人称。
3.1 一般现在时的被动语态•肯定句:am/is/are + 过去分词•否定句:am/is/are + not + 过去分词•疑问句:Am/Is/Are + 主语 + 过去分词?例如: - Active: They repair the car. - Passive: - 肯定句:The car is repaired by them. - 否定句:The car is not repaired by them. - 疑问句:Is the car repaired by them?3.2 一般过去时的被动语态•肯定句:was/were + 过去分词•否定句:was/were + not + 过去分词•疑问句:Was/Were + 主语 + 过去分词?例如: - Active: They repaired the car. - Passive: - 肯定句:The car was repaired by them. - 否定句:The car was not repaired by them. - 疑问句:Was the car repaired by them?3.3 现在进行时的被动语态•肯定句:am/is/are being + 过去分词•否定句:am/is/are not being + 过去分词•疑问句:Am/Is/Are + 主语 + being + 过去分词?例如: - Active: They are repairing the car. - Passive: - 肯定句:Thecar is being repaired by them. - 否定句:The car is not being repairedby them. - 疑问句:Is the car being repaired by them?3.4 过去进行时的被动语态•肯定句:was/were being + 过去分词•否定句:was/were not being + 过去分词•疑问句:Was/Were + 主语 + being + 过去分词?例如: - Active: They were repairing the car. - Passive: - 肯定句:The car was being repaired by them. - 否定句:The car was not being repaired by them. - 疑问句:Was the car being repaired by them?3.5 将来时的被动语态•肯定句:will be + 过去分词•否定句:will not be + 过去分词•疑问句:Will + 主语 + be + 过去分词?例如: - Active: They will repair the car. - Passive: - 肯定句:The car will be repaired by them. - 否定句:The car will not be repaired by them. - 疑问句:Will the car be repaired by them?4. 被动语态的用法4.1 强调动作的接受者被动语态常用于强调动作的接受者,将注意力放在接受者身上,而不是执行者。
被动语态用法详解TENSE 主动语态被动语态一般现在时be+V.\V.sam\is\are+V(p.p)一般将来时will\be going to\be (about)to+V. will be +V(p.p) 现在进行时am\is\are+V.ingam\is\are+being+V(p.p)一般过去时①was\were②V.edwas\were+V(p.p)现在完成时have\has+V.p.p have\has+bee n+V(p.p)过去完成时had+V.p.phad+been+V(p.p)被动语态牢记一点,be加动词过去分词。
分析句中主和谓,承受者作主语即被动。
短语动词不可忘介、副词。
另有不及物动词,只有主动无被动。
还要注意其时态,与主动语态全相同。
不用被动语态的情况1)不及物动词或动词短语无被动语态(即多数的瞬间动词):appear, die(死亡),disappear(消失), end (vi. 结束), fail, happen, last, lie, remain, sit, spread, stand break out, come true, fall asleep, keep silence, lose heart, take place. After the fire, very little remained of my house. 比较:rise, fall, happen是不及物动词;raise, seat是及物动词。
(错)The price has been risen.(对)The price has risen.(错)The accident was happened last week.(对)The accident happened last week.(错)The price has raised.(对)The price has been raised.(错)Please seat.(对)Please be seated.要想正确地使用被动语态,就须注意哪些动词是及物的,哪些是不及物的。
英语被动语态用法总结(完整)一、单项选择被动语态1.This kind of cloth_______well and large quantities of the cloth ________.A.is sold; have been sold B.is sold; has been soldC.sells; have been sold D.sells ; has been sold【答案】C【解析】【详解】考查动词的时态语态。
句意:这种布销路很好,已售出大量。
sell/wash/burn 等词在表示事物的状态、特点时,可以用主动表被动,因此第一个空应选 sells;第二空表示“出售,卖”的动作,用被动语态,且强调对现在的影响应该用现在完成时态,故正确答案为C。
2.Our teacher keeps telling us that the future to the well-educated.A.belonging B.belongs C.is belonging D.is belonged【答案】B【解析】考查短语:belong to 属于,没有进行时态没有被动语态。
故答案选B。
3.The affairs of each country should be by its own people.A.elected B.settledC.developed D.contained【答案】B【解析】考查动词。
句意为:各国事务应由自己国家的人们解决。
由句意可知,选settle,意为“解决”。
elect选举;develop 发展;contain 包含,控制。
故选B。
4.At the awarding ceremony held in Tokyo, the scientists were surprised by what ______ in science and technology.A.has discovered B.has been discoveredC.had discovered D.had been discovered【答案】D【解析】句意:在东京举行的颁奖仪式上,科学家们惊讶于科学技术的发现。
一、被动语态的用法:1、不知道或没有必要指出谁是动作的执行者时。
The bridge was built last year.这座桥是去年建造的。
He was elected chairman.他被选为主席。
2、当更加强调动作的承受者时。
此时动作的执行者由by引导置于谓语动词之后,不需要时可以省略。
The room hasn't been cleaned yet.房间还没有打扫。
The tiger was killed by him.老虎被他杀死了。
3、当动作的执行者不是人时,多用被动语态。
如:The window was blown by wind.窗户被风吹开了。
The whole village has been washed away by the flood.整个村庄都被洪水冲走了。
4、表示客观的说明常用"It is + 过去分词."句型。
It is said that Lucy has gone abroad.据说露茜已经出国了。
It is believed that he is a spy. (=He is believed to be a spy.)大家相信他是个间谍。
其它常见的"It is + 过去分词+ that"句型还有It is reported that…据报道It is said that…据说It is believed that…大家相信It is suggested that…有人建议二、主动语态变为被动语态1、主动语态变为被动语态的步骤:(1)将主动句的宾语变为主语:注意:如果主动句的宾语是代词,需将其由宾格变为主格。
如:Tom killed him. → He was killed by Tom.(2)将动词改为"be+过去分词"。
注意:They held a meeting yesterday. → A meeting was held by them yesterday.他们昨天开会了。