8种常用时态的被动语态

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动词时态和被动语态

动词时态和被动语态

时态的公式
1.一般过去时:did
2.一般将来时:will+do/be going to+do
3.一般现在时:do/does
4.现在进行时;be+doing
5.现在完成时:have/has+done
6.现在完成进行时:have/has+been+doing
7.过去进行时:was/were+doing
8.过去完成时:had+done
9.过去完成进行时:had been+doing
10.将来进行时:will+be+doing
11.将来完成时:will+have+done
12.将来完成进行:will+have+been+doing
13.一般过去将来时:would+do或者was/were+going to+do
14.过去将来进行时:would+be+doing
15.过去将来完成时:would+have+done
16.过去将来完成进行时:would+have+been+doing
被动语态
1)一般现在时:am/is/are+done
2)一般过去时:was/were+done
3)一般将来时:will+be+done
4)过去将来时:would+be+done
5)现在进行时:am/is/are+being+done
6)过去进行时:was/were+being+done
7)将来进行式:will+be+being+done
8)现在完成时:have+has+been+done
9)过去完成时:had+been+done
10)将来完成时:will+have+been+done。

8种基本时态及其被动结构

8种基本时态及其被动结构

英语8种基本时态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.种类和用法:1.一般现在时:表示现在或现阶段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.We go shopping once a week。

He goes to work by bike every day.The sun always rises in the east 。

The light travels faster than the sound 。

※一般现在时第三人称单数动词的变化形式。

a)一般情况动词在词尾加-s . come—--comes speak--—speaksb)以o,s, x, ch,sh结尾的单词在词后加-es。

do—--does pass———passes watch---watchesc)以“辅音字母+y"结尾的单词变y为i加—es。

study-——studies cry—--cries d)以“元音字母+y”结尾的单词直接加—s. play---plays stay——-stays2.一般过去时: 表示发生在过去的动作或存在的状态I was a student 6 years ago. I went to Beijing last year.※动词过去式变化规则。

a)一般情况下的词加-ed. work---worked call---—calledb)以不发音的字母e结尾的单词直接加-d . live———-lived change——--changedc)以“辅音字母+y"结尾的单词,变y为i加-ed. study--—-studied carry—-——carriedd)以“元音字母+y”结尾的单词直接加-ed。

play——--played stay—---stayede)以一个辅音字母结尾的重读闭音节的(x除外)动词,应先双写这个辅音字母然后再加—ed。

英语中8种时态的主动语态和被动语态

英语中8种时态的主动语态和被动语态

英语中8种时态的主动语态和被动语态1、一般现在时(1)一般现在时表示没有时限的持久存在的动作或状态或现阶段反复发生的动作或状态,常和副词usually,often,always sometimes,every year, every week等连用。

例如:1)The moon moves round the earth..(2)在由after,until,before,once,when,even if(即使, 虽然),in case(conj.万一, 如果),as long as(和 ... 一样长),as soon as(conj.一 ... 就),the moment(一 ... 就 ..., 这一刻)以及if,unless(conj.除非, 如果不prep.除 ... 外)等引导的时间状语从句或条件状语从句中,通常用一般现在时代替将来时。

例如:1)I will tell him the news as soon as I see him.(3)某些表示起始的动词,可用一般现在时表示按规定、计划或安排要发生的动作,这类动词有:be,go,come,start,depart(vt.离开vi.离开, 死亡),arrive(vi.到达, 到来, 成功),begin(v.开始, 着手),leave(v.委托, 离开, 留给, 遗留, 遗赠, 听任n.许可, 准假, 告别vi.生出叶子)等。

例如:1)The plane leaves at three sharp(adv. 正好, (时间)准, 尖锐地).(4)在由why,what,where,whoever(pron. 无论是谁, 不管谁, 任何人),who,that,as 等引导的从句中,也常用一般现在时代替将来时。

例如:1)Free tickets will be given to whoever comes first.2.一般过去时英语中8种时态的主动语态和被动语态(1)表示过去某一特定时间所发生的、可完成的动作或状态,常与表示确切过去时间的词、短语或从句连用。

八大时态及各种时态的被动语态有哪些

八大时态及各种时态的被动语态有哪些

八大时态及各种时态的被动语态有哪些?悬赏分:0|解决时间:2010-7-30 13:04|提问者:a781651000八大时态及各种时态的被动语态有哪些?最佳答案八大时态一、一般现在时:1.概念:经常、反复发生的动作或行为及现在的某种状况。

2.时间状语:always, usually, often, sometimes, every week (day, year, month…), once a week, on Sundays,3.基本结构:动词原形(如主语为第三人称单数,动词上要加(e)S)4.否定形式:am/is/are+not;此时态的谓语动词若为行为动词,则在其前加don't,如主语为第三人称单数,则用doesn't,同时还原行为动词。

5.一般疑问句:把be动词放于句首;用助动词do提问,如主语为第三人称单数,则用does,同时,还原行为动词。

6.例句:. It seldom snows here.He is always ready to help others.Action speaks louder than words.二、一般过去时:1.概念:过去某个时间里发生的动作或状态;过去习惯性、经常性的动作、行为。

2.时间状语:ago, yesterday, the day before yesterday, last week(year, night, month…), in 1989, just now, at the age of 5, one day, long long ago, once upon a time, etc.3.基本结构:be动词;行为动词4.否定形式:was/were+not;在行为动词前加didn't,同时还原行为动词。

5.一般疑问句:was或were放于句首;用助动词do的过去式did 提问,同时还原行为动词。

6.例句:She often came to help us in those days.I didn't know you were so busy.三、现在进行时:1.概念:表示现阶段或说话时正在进行的动作及行为。

(完整word版)八种时态主动语态被动语态

(完整word版)八种时态主动语态被动语态

八种时态主动语态被动语态一般现在时(经常,反复,爱好,特点,条件,真理) do; does am;is;are done一般过去时(过去发生的事,不强调现在的结果) did; -ed was;were done一般将来时(将要发生的事) will do will be done现在进行时(现在正在发生的事) am;is;are doing am;is;are being done过去进行时(当时正在发生的事) was;were doing was;were being done现在完成时(过去发生的事,强调现在的结果) have;has done have;has been done过去完成时(过去完成的事;过去以前发生的事) had done had been done过去将来时(过去将要发生的事) would do would be done八种时态:• He is always ready to help others. 一般现在时• She often came to help us in those days.一般过去式• He is doing his homework now. 现在进行时• At that time she was doing her homework.过去进行时• I've written an article.现在完成时• By the end of last month. We had reviewed four books 。

过去完成时• It is going to rain.一般将来时• I asked who was going there. 过去将来时一般现在时1.概念:经常、反复发生的动作或行为及现在的某种状况。

2.时间状语:always, usually, often, sometimes, every week (day, year, month…), once a week, on Sundays,3.基本结构:动词原形(如主语为第三人称单数,动词上要改为第三人称单数形式)4.否定形式:am/is/are+not;此时态的谓语动词若为行为动词,则在其前加don't,如主语为第三人称单数,则用doesn't,同时还原行为动词。

(完整word版)八种时态主动语态被动语态

(完整word版)八种时态主动语态被动语态

八种时态主动语态被动语态一般现在时(经常,反复,爱好,特点,条件,真理) do; does am;is;are done一般过去时(过去发生的事,不强调现在的结果) did; -ed was;were done一般将来时(将要发生的事) will do will be done现在进行时(现在正在发生的事) am;is;are doing am;is;are being done过去进行时(当时正在发生的事) was;were doing was;were being done现在完成时(过去发生的事,强调现在的结果) have;has done have;has been done过去完成时(过去完成的事;过去以前发生的事) had done had been done过去将来时(过去将要发生的事) would do would be done八种时态:• He is always ready to help others. 一般现在时• She often came to help us in those days.一般过去式• He is doing his homework now. 现在进行时• At that time she was doing her homework.过去进行时• I've written an article.现在完成时• By the end of last month. We had reviewed four books 。

过去完成时• It is going to rain.一般将来时• I asked who was going there. 过去将来时一般现在时1.概念:经常、反复发生的动作或行为及现在的某种状况。

2.时间状语:always, usually, often, sometimes, every week (day, year, month…), once a week, on Sundays,3.基本结构:动词原形(如主语为第三人称单数,动词上要改为第三人称单数形式)4.否定形式:am/is/are+not;此时态的谓语动词若为行为动词,则在其前加don't,如主语为第三人称单数,则用doesn't,同时还原行为动词。

被动语态详解

被动语态详解

【被动语态详解】一、巧记各种时态的被动语态被动语态基本形式: be + done一般现在时: am, is, are + done一般过去时: was, were + done一般将来时: will + be doneam, is, are going to + be done过去将来时:would + be donewas, were going to + 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不定式:to be done介词:如without being done情态动词:can,may,must,should be done【点拨】1.被动语态是在主语和谓语动词之间存在逻辑上的被动关系时才使用的一种语态。

2.各种时态的被动语态都有一个明显的特点,既要体现出本时态,又要用上被动语态的基本形式be done。

现在进行时的被动语态构成是am, is, are + being done,可以这样理解:首先,它必须是现在进行时am, is, are + doing,同时它又必须是被动语态be done,所以be动词在现在进行时和被动语态之间起了一个衔接作用,即用being,这样being就把二者有机结合起来。

所以现在进行时的被动语态形式必须是也只能是am, is, are + being done。

同理可推出,现在完成时的被动语态形式应该是:既得是现在完成时have, has + done,又得是被动语态be done,所以be动词只有用过去分词been 才能把二者有机结合起来,即:have, has + been done。

其它时态的被动语态依此类推。

3.有些时态可以运用对比记忆法。

如现在进行时与过去进行时,一般将来时与过去将来时,现在完成时与过去完成时等只是在助动词上有所不同。

八大时态的被动语态结构

八大时态的被动语态结构

八大时态的被动语态结构
以下是八大时态的被动语态结构:
1. 现在时被动语态(Present Simple Passive):主语 + am/is/are + 过去分词。

2. 过去时被动语态(Past Simple Passive):主语 + was/were + 过去分词。

3. 将来时被动语态(Future Simple Passive):主语+ will be + 过去分词。

4. 现在进行时被动语态(Present Continuous Passive):主语 + am/is/are being + 过去分词。

5. 过去进行时被动语态(Past Continuous Passive):
主语 + was/were being + 过去分词。

6. 现在完成时被动语态(Present Perfect Passive):
主语 + has/have been + 过去分词。

7. 过去完成时被动语态(Past Perfect Passive):主语 + had been + 过去分词。

8. 将来完成时被动语态(Future Perfect Passive):主语 + will have been + 过去分词。

被动语态的八大时态

被动语态的八大时态
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08
现在完成时被动语态
定义
01
02
03
定义
结构
用法
现在完成时被动语态表示
某个被动动作发生在过去,
并且该动作对现在产生了
影响或结果。
have/has + been + 过去
分词
常用于描述已经发生并产

被动语态

被动语态
• 24. Such problems must be paid attention to (by us). • 25. The questions should be put forward at the meeting (by you).
• ②不说或者众所周知是谁做时,用被动语 态,省略by短语。如: • Rice is also grown in this place. (这个地 方也种水稻) • A railroad will be built here in three years. (三年之后这里将要修建一条铁路)
• ③强调动作的承受者,句尾加by短语。如: • It was written by Lu Xun. (它(书)是鲁迅 写的) • A pet dog is never killed by its owner. (宠物狗是不会被主人宰杀的)
• 11. You will be told how to prepare for the examination (by someone). • 12. Ways to make waste water clean have been found (by them). • 13. The children must be taken care of (by someone) when we go out. • 14. The meeting won’t be held (by them) until next Friday.
• is pleased / worried / tired • hit / knocked down / shot
• III. 被动语态的用法: • ① 不知道谁是动作的执行者(即不知道谁做) 时用被动语态,省略by短语。如: • A man was killed in the accident. (一个 人死于事故) • This window was broken yesterday. (这 扇窗子是昨天被打破的)

八种时态的结构和被动语态

八种时态的结构和被动语态

八种时态的结构和被动语态一、一般现在时态一般现在时态表示经常性的动作或状态。

在句子中,主语加上动词的原形即可构成一般现在时态的句子。

例句:Dogs bark.(狗叫。

)被动语态:由“be+过去分词”构成。

例句:The cake is baked by my mother.(蛋糕是我妈妈烤的。

)二、一般过去时态一般过去时态表示过去某个时间发生的动作或存在的状态。

在句子中,主语加上动词的过去式即可构成一般过去时态的句子。

例句:She ate an apple yesterday.(她昨天吃了一个苹果。

)被动语态:由“was/were+过去分词”构成。

例句:The book was written by Mark Twain.(这本书是马克·吐温写的。

)三、一般将来时态一般将来时态表示将要发生的动作或存在的状态。

在句子中,主语加上助动词“will”或“shall”,再加上动词的原形即可构成一般将来时态的句子。

例句:I will visit my grandparents next week.(我下周会去看望我的祖父母。

)被动语态:由“wil l be+过去分词”或“is/am/are going to be+过去分词”构成。

例句:The letter will be delivered by the postman.(这封信将由邮递员投递。

)四、现在进行时态现在进行时态表示现在正在进行的动作。

在句子中,主语加上“be”动词的现在分词形式,再加上动词的原形即可构成现在进行时态的句子。

例句:She is watching TV now.(她正在看电视。

)被动语态:由“am/is/are being+过去分词”构成。

例句:The house is being cleaned by the maid.(房子正在被女仆打扫。

)五、过去进行时态过去进行时态表示过去某个时间正在进行的动作。

在句子中,主语加上“was/were”动词的现在分词形式,再加上动词的原形即可构成过去进行时态的句子。

各种时态的被动语态

各种时态的被动语态

各种时态的被动语态一、八大时态的被动语态的构成:1.一般现在时的被动语态构成:(am/is/are +done)如:I am asked to study hard. 我被请求努力学习。

This shirt is washed once a week. 这件T恤一周洗一次。

These songs are usually sung by boys. 这些歌曲通常是男生唱的。

2.一般过去时的被动语态构成:(was/were done)如:The soldier was killed, but the train was saved. 这位战士牺牲了,然而列车得救了。

Some notes were passed up to the speaker. 有人给讲演者递上来一些纸条。

3.一般将来时的被动语态构成:(shall/will be done)如:We shall be asked a lot of strange questions. 我们将被问许多怪题。

My son will be sent to school next September. 来年九月我将送我儿子去读书。

4.过去将来时的被动语态构成:(should/would be done)如:The news would be sent to him as soon as it arrived. 消息一到就会转给他的。

He told us that the new railway would be built the next year. 他告诉我新铁路将在明年修建。

5.现在完成时的被动语态构成:(has/have been done)如:The work has just been finished. 工作刚刚结束。

The old rules have been done away with by us. 旧规章已经被我们废除了。

6.过去完成时的被动语态构成:(had been done)如:By last December three ships had been built by them. 到去年十二月底他们已建造了三艘船。

各种时态的被动语态

各种时态的被动语态

各种时态的被动语态各种时态的被动语态一、八大时态的被动语态的构成:1.一般现在时的被动语态构成:(am/is/are +done)如:I am asked to study hard. 我被请求努力学习。

This shirt is washed once a week. 这件T恤一周洗一次。

These songs are usually sung by boys. 这些歌曲通常是男生唱的。

2.一般过去时的被动语态构成:(was/were done)如:The soldier was killed, but the train was saved. 这位战士牺牲了,然而列车得救了。

Some notes were passed up to the speaker. 有人给讲演者递上来一些纸条。

3.一般将来时的被动语态构成:(shall/will be done)如:We shall be asked a lot of strange questions. 我们将被问许多怪题。

My son will be sent to school next September. 来年九月我将送我儿子去读书。

4.过去将来时的被动语态构成:(should/would be done)如:The news would be sent to him as soon as it arrived. 消息一到就会转给他的。

He told us that the new railway would be built the next year. 他告诉我新铁路将在明年修建。

5.现在完成时的被动语态构成:(has/have been done)如:The work has just been finished. 工作刚刚结束。

The old rules have been done away with by us. 旧规章已经被我们废除了。

中考英语各种时态的被动语态举例知识点总结

中考英语各种时态的被动语态举例知识点总结

中考英语各种时态的被动语态举例知识点总结各种时态的被动语态举例一般地讲,被动语态可用于英语的各种时态。

为了能准确地运用被动语态,重点是要掌握be动词的各种时态变化。

各种时态的被动语态举例如下:1、一般现在时的被动语态. am / is / are + 动词的过去分词Our classroom is cleaned every day.This car is made in China.2、一般过去式的被动语态: was / were + 动词的过去分词His desk was cleaned just now.The station was built in 1928.3、现在进行时的被动语态: am / is / are + being + 动词的过去分词A new factory is being built in our city now.Some trees are being cut down in the park.4、过去进行时的被动语态: was / were + being + 动词的过去分词A new factory was being built in our city at that time.Some babies were being looked after by Miss Chen last year.5、一般将来时的被动语态:(A) will / shall + be + 动词的过去分词(B) am / is / are + going to be +动词的过去分词.Some new factories will be built in our city this year.Your watch is going to be mended in an hour.6、过去将来时的被动语态: (1).would / should + be + 动词的过去分词(2).was / were +going to be + 动词的过去分词.She said that some new factories would be built soon in our city.He thought that your watch was going to be mended after an hour.7、现在完成时的被动语态:have / has + been + 动词的过去分词Some new factories have been built in the city since last year.Your watch has been mended already.8、过去完成时的被动语态:had + been + 动词的过去分词He said that some new factories had been built in the city.I didn’t know that my watch had been mended .9、含情态动词的被动式:can/may/must + be + done例如:He can not be found. / I must be paid for this.。

8种时态的被动语态

8种时态的被动语态

动词的语态:主动语态和被动语态被动语态的基本结构:Be + done(过去分词)1、一般现在时:(主动语态)I help you.发出者动词承受者变为被动语态:Do——am/is/are doneYou are helped by me.承受者谓语发出者2、一般过去时的被动:did——was/were done(I helped you.-每个例子可让学生自己先尝试变被动,再给答案)3、一般将来时的被动:Will do——will be done(I will help you.-)4、现在进行时的被动:Am/is/are doing ——Am/is/are being done(I am helping you.-)5、过去进行时的被动:Was/were doing——Was/were being done(I was helping you.-)6、现在完成时的被动:Have done——have been done (I have helped you.-)7、过去完成时的被动:Had done——had been done (I had helped you.-)8、过去将来时的被动:Would do ——would be done (I would help you.-)答案:2、You were helped by me.3、You will be helped by me.4、You are being helped by me.5、You were being helped by me.6、You have been helped by me.7、You had been helped by me.8、You would be helped by me.。

被动语态8个时态例句

被动语态8个时态例句

被动语态8个时态例句
被动语态8个时态的例句如下:
1.现在一般时:I am asked to study hard.(我被要求好好学习。


2.过去一般时:He was taken to the police station.(他被带到了警察局。


3.现在进行时:The house is being cleaned.(房子正在被打扫。


4.过去进行时:The homework was being done when I got home.(当我
到家的时候,家庭作业正在被做。


5.现在完成时:The book has been read by me.(这本书已经被我读过。


6.过去完成时:The letter had been written by her.(信已经被她写完了。


7.一般将来时:He will be sent to a new school next year.(明年他将被送
到一所新学校。


8.现在完成进行时:The experiment has been being carried out since
yesterday.(这个实验从昨天开始一直在进行。


1/ 1。

8种常用时态的被动语态

8种常用时态的被动语态

8种常用时态的被动语态由“助动词be + 动词的过去分词”构成。

助动词be 有时态、人称和数的变化。

(1) 一般现在时:am/is/are +过去分词。

如:Rice is grown in south China. 华南种植水稻。

(2) 一般过去时:was/were+过去分词。

如:The glass was broken yesterday. 这块玻璃是昨天打烂的。

(3) 现在进行时:am/is/are being +过去分词。

如:The project is being carried out. 这个计划正在执行中。

(4) 过去进行时:was/were/being +过去分词。

如:This road was being built this time last year. 这条路去年这个时候还在修建。

(5) 一般将来时:will be +过去分词。

如:The cars will be sent abroad by sea. 这些汽车将由水路运往国外。

(6) 过去将来时:would be +过去分词。

如:The manager said the project would be completed by the end of the year. 经理说这个工程在年底前将会完成。

(7) 现在完成时:have/has been +过去分词。

如:This novel has been translated into several languages. 这本小说已被译成了几种语言。

(8) 过去完在时:had been +过去分词。

如:When I got to the theatre, I found the tickets had already been sold out. 我到达剧院时,发现票已卖完了。

被动语态的主要用法■当不知道或没有必要指出动作的执行者时,常用被动语态,这时往往不用by短语。

八种时态 主动语态 被动语态

八种时态                                  主动语态         被动语态

八种时态主动语态被动语态一般现在时(经常,反复,爱好,特点,条件,真理) do; does am;is;are done一般过去时(过去发生的事,不强调现在的结果) did; -ed was;were done一般将来时(将要发生的事) will do will be done现在进行时(现在正在发生的事) am;is;are doing am;is;are being done过去进行时(当时正在发生的事) was;were doing was;were being done现在完成时(过去发生的事,强调现在的结果) have;has done have;has been done过去完成时(过去完成的事;过去以前发生的事) had done had been done过去将来时(过去将要发生的事) would do would be done八种时态:• He is always ready to help others. 一般现在时• She often came to help us in those days.一般过去式• He is doing his homework now. 现在进行时• At that time she was doing her homework.过去进行时• I've written an article.现在完成时• By the end of last month. We had reviewed four books 。

过去完成时• It is going to rain.一般将来时• I asked who was going there. 过去将来时一般现在时1.概念:经常、反复发生的动作或行为及现在的某种状况。

2.时间状语:always, usually, often, sometimes, every week (day, year, month…), once a week, on Sundays,3.基本结构:动词原形(如主语为第三人称单数,动词上要改为第三人称单数形式)4.否定形式:am/is/are+not;此时态的谓语动词若为行为动词,则在其前加don't,如主语为第三人称单数,则用doesn't,同时还原行为动词。

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8种常用时态的被动语态
由“助动词be + 动词的过去分词”构成。

助动词be 有时态、人称和数的变化。

(1) 一般现在时:am/is/are +过去分词。

如:
Rice is grown in south China. 华南种植水稻。

(2) 一般过去时:was/were+过去分词。

如:
The glass was broken yesterday. 这块玻璃是昨天打烂的。

(3) 现在进行时:am/is/are being +过去分词。

如:
The project is being carried out. 这个计划正在执行中。

(4) 过去进行时:was/were/being +过去分词。

如:
This road was being built this time last year. 这条路去年这个时候还在修建。

(5) 一般将来时:will be +过去分词。

如:
The cars will be sent abroad by sea. 这些汽车将由水路运往国外。

(6) 过去将来时:would be +过去分词。

如:
The manager said the project would be completed by the end of the year. 经理说这个工程
在年底前将会完成。

(7) 现在完成时:have/has been +过去分词。

如:
This novel has been translated into several languages. 这本小说已被译成了几种语言。

(8) 过去完在时:had been +过去分词。

如:
When I got to the theatre, I found the tickets had already been sold out. 我到达剧院时,发现
票已卖完了。

被动语态的主要用法
■当不知道或没有必要指出动作的执行者时,常用被动语态,这时往往不用by短语。

The front window in the classroom was broken yesterday. 昨天,教室的前窗被打破了。

(不知谁打破的)
They have been poorly paid. 他们的工资太低。

(没必要指出工资是谁付的)
■突出或强调动作的承受者,如果需要说出动作的执行者,用by短语。

The time-table has been changed. 时间表已变动了。

(要突出的是“时间”)
These books are written especially for children. 这些书是专门为孩子们写的。

(强调的是“”这些书)
■为了使语言得体或圆滑等不愿意说出动作的执行者。

如:
You are requested to make a speech at next meeting. 请您在下次会议上作个发言。

It is said that she is going to be married to a foreigner. 据说她要嫁给一个外国人。

■出于修辞的原因,或是说为了更好地安排句子。

如:
It is generally considered impolite to ask one’s age, salary, marriage, etc. . 问别人的年龄、工资、婚姻状况等通常被认为是不礼貌的。

The notion is especially opposed to by those who have invested much in the area. 这个提议特别遭到了那些在本地区投资很大的人的反对。

(因those的定语太长了,若用它作主语,主语与谓语就相距太远而显得句子松散。

)
主动语态变被动语态的方法
1. 基本方法
将主动语态的宾语变为被动语态的主语,将主动谓语变为被动谓语(be+过去分词),将主动语态的主语变为by短语(在被动句中用作状语):
He stole our money.→Our money was stolen by him.
【注】(1)若不强调动词执行者,被动语态中的by短语通常可以省略:
The house was built in 1978. 这座房子是1978年建的。

(2)在转变语态时,要注意保持两种语态时态的一致性:
The students will study the problem.
→The problem will be studied by the students.
A friend of ours is repairing the roof.
→The roof is being repaired by a friend of ours.
2. 双宾动词的被动语态
双宾动词即指带双宾语的动词,它们在变为被动语态时,有以下两种情形值得注意:
(1)有些双宾动词(如award, buy, give, leave, lend, offer, pay, show, teach, tell等)在变为被动语态时,既可把间接宾语(指人)变为被动语态的主语,而把直接宾语(指事物)保留下来(称为保留宾语),也可把直接宾语(指事物)变为被动语态的主语,而把间接宾语改为介词to 或for引起的状语(到底用to还是for,与所搭配的动词有关)。

比较:
He gave her some money. 他给她一些钱。

→ She was given some money. / Some money was given to him.
He bought her a watch. 他给她买了一快表。

→ A watch was bought for her. / She was bought a watch.
(2)有些双宾动词(如bring, do, make, pass, sell, send, sing, write等)通常用直接宾语(指事物)作被动语态的主语,而将间接宾语用作保留宾语(其前根据情况用介词to或for):Father made me a doll. → A doll was made for me.
He wrote her a letter. → A letter was wr itten to her.
(3)有些双宾动词(如answer, deny, envy, refuse, save, spare等)通常用间接宾语(指人)作被动语态的主语,而将直接宾语用作保留宾语:
He answered me that question. → I was answered that question by him.
3. 含有情态动词的被动形式
若主动语态中谓语含有情态动词,在相应的被动语态中通常应保留该情态动词,其结构为“情态动词+be(或be的适当时态形式)+过去分词”:
Everyone must know this. →This must be known by everyone.
请看以下带情态动词被动句实例:
This can’t be done in a short time. 这不是短期内可以完成的。

She may have been sent to work elsewhere. 她可能被派到别处工作去了。

The door must have been locked by my wife. 门一定是我妻子锁的。

The environment should be improved. 环境应当改善。

The second point needn’t be discussed today. 第二点今天不必讨论。

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