Passive Voice基础知识
g语义学第七讲 语态(被动与中动)
It must be pointed that China is a developing country and will always take sides with the Third World．
必须指出，中国是个发展中国家，将永远和第三世界 站在一起。
2)出于礼貌或为了使叙述圆通、得体而不愿说出施事 者。例如：
Up to now, sulphur dioxide has been regarded as one of the most serious of these pollutants．
到目前为止，二氧化碳一直被看作是这 些污染物中最严重的一种。
The finished products must be carefully inspected before delivery．
Clothes iron more easily when damp． Her letter read as if she had copied from some book．
2)进行体的动词，表示一种持续的状态。 例如：
The sausages are frying．(=being fried) The stamps are printing (= being printed)
被动句的使用语境
1）难以说出或没有必要指出施动者。 例 如：
Such books are written for children．
这种书是为儿童写的。
The delegation was warmly welcomed in France．
代表团在法国受到热烈欢迎。
2）在科技文章中．大量地使用结构被动 句，因为： (1)科技论著注重客观事理，尽量避免主观 臆断； (2)突出主要论证和谈话中心； (3)施事往往难以言明，也不需言明。 例如：
passive voice语法表
文章标题：深度解析Passive Voice语法表在英语语法中，Passive Voice（被动语态）是我们学习和掌握的重要内容之一。
通过Passive Voice的运用，我们可以使句子结构更加灵活多样，表达方式也更加丰富。
在本文中，我将从Passive Voice的定义、结构、使用场景以及与Active Voice的比较等多个角度进行全面评估，帮助你更全面、深入地掌握Passive Voice的语法表。
1. Passive Voice的定义Passive Voice是指句子的宾语成为主语，而动作的执行者则变成了句子的主语。
在Passive Voice的句子结构中，通常使用助动词be （am/is/are/was/were）加上动词的过去分词形式来构成。
“The letter is written by Tom.”（这封信是汤姆写的），其中，“The letter”成为主语，而“Tom”则成为了主语的补语。
2. Passive Voice的结构Passive Voice的句子结构通常为：“被动语态助动词（am/is/are/was/were）+ 及物动词的过去分词+ by + 动作执行者”。
需要注意的是，当动作执行者未知或不重要时，也可以省略by 短语。
另外，需要注意的是在句子的时态转换和语态转换过程中，时态和语态的一致性也是需要额外注意的。
3. 使用场景Passive Voice通常用于以下几种情况：- 当动作执行者未知或不需要指出时。
- 当动作执行者不重要，只需要突出动作的发生时。
- 当强调对象而非主语时。
4. 与Active Voice的比较与Active Voice相比，Passive Voice在句子结构和语法使用上有所不同。
在Active Voice中，执行者在句子中占有主要位置，而在Passive Voice中，对象或接受动作的人或事物在句子中更加突出。
总结回顾本文从Passive Voice的定义、结构、使用场景以及与Active Voice 的比较等多个角度全面评估了Passive Voice的语法表。
被动语态(Passive voice)讲解
被动语态（Passive voice）讲解一、被动语态的基本时态变化1)am/is/are+done(过去分词)一般现在时例Visitors are requested not to touch the exhibits.2)has/have been done现在完成时例All the preparations for the task have been completed,and we're ready to start.3)am/is/are being done现在实行时例A new cinema is being built here．4)was/were done一般过去时例I was given ten minutes to decide whether I should reject the offer.5)had been done过去完成时例By the end of last year,another new gymnasium had been completed in Beijing.6)was/were being done过去实行时例A meeting was being held when I was there.7)shall/will be done/be going to be done/be about to be done一般将来时例Hundreds of jobs will be lost if the factory closes.8)带情态动词的被动结构。
其形式为:情态动词＋be＋过去分词。
例The baby should be taken good care of by the baby-sitter.二、被动语态的特殊结构形式---主动表被动1.系动词没有被动形式,但有些表示感受、感官的连系动词feel,sound,taste, book,feel等在主系表结构中常以主动形式表示被动意义。
高中英语语法：不定式被动(Passive Voice)复习过程
It is said that Mike is sick in bed.
Mike is said to be sick in bed. 据说麦克卧床不起.
People believe that he was killed. It is believed that he was killed.
between the one built last year and the one being built now. (3) This house seems to have been built by a good architect.
通常在believe, suppose, say, report等动词构成 的句子中可以进行主动语态到被动语态以及 被动语态和动词不定式的转换。如：
4. 构成复合谓语： The books are not allowed to be taken out of the room. 5. 作定语： Are you going to the meeting to be held in the teachers’ office? 6. 作状语： She was too young to be assigned such work.
2. 作宾语： She asked to be sent to work in Xinjiang.
3. 构成复合宾语： He wanted the letter to be typed at once. She didn’t like herself to be praised like that.
8. Before you come back, the building will have been finished.
高中英语语法：不定式被动(Passive Voice)
式
一 般
进 行
完 成
has/have been given had been given shall/will have been given
being given
将 来
shall/will be given
1. English is spoken all over the world. 2. The water is being turned into vapour. 3. Those rooms have not been cleaned yet. 4. He was seen to enter the room. 5. At that time they were being shown how to run the machine.
Grammar
Passive Voice
复习被动语态(Revise the Passive Voice) 一. 复习被动语态 主动语态(the active voice)和 英语动词有主动语态 英语动词有主动语态 和 被动语态(the passive voice)两种形式。 两种形式。 被动语态 两种形式 主动语态表示主语是动作的执行者; 主动语态表示主语是动作的执行者 被语态表示主语是动作的承受者。如： 被语态表示主语是动作的承受者。 The boss made the workers work long hours. (主动语态 主动语态) 主动语态 The workers were made to work long hours. (被动语态 被动语态) 被动语态
People believe that he was killed. It is believed that he was killed. He is believed to have been killed. 大家相信他被杀了. 大家相信他被杀了
被动语态详解 Passive voice
被动语态详解被动语态Passive voice语态（voice）是动词的一种形式，用以表示主语和谓语之间的关系。
英语语态分为两种，一种是主动语态（active voice）另一种是被动语态（passive voice）主动语态表示，主语是动作的执行者。
Yesterday I parked my car outside the school.被动语态表示主语时动作的承受者。
A sound of piano is heard in the adjoining room.被动语态常由助动词be以及及物动词的过去分词所构成。
被动语态可以用在各种时态里，最常见的有以下几种种。
一般现在时You are wanted in the office. I am not so easily deceived.一般过去时I was invited to the concert. Our house was built in 1969.一般将来时We hope that an agreement will be arrived at.现在完成时My car has been repaired. The part has been planned since the New Year.过去完成时I looked at the lanterns that had been lighted and placed near the opening.现在进行时The question is being discussed at the meeting. The children are being taken care of by their aunt.过去进行时When I called, tea was being served. 这里的call 表示的是拜访。
被动语态除了常用的be加上过去分词构成之外，还可以用get+过去分词的结构。
被动语态(Passive Voice)
被动语态（Passive Voice）版权归秦皇岛市第三中学刘笑群所有，复印引用需征得本人同意考点：1被动语态与系表结构的区别。
2 主动形式表示被动意义的情况。
3 “get+done”结构的用法。
4 不能用于被动语态的动词。
1．基本定义：语态：表示主语和谓语的关系。
被动语态：如果主语是谓语动作的承受者，动词就用被动语态。
主动语态：如果主语是谓语动作的执行者，动词就用主动语态。
2．各种时态的被动语态形式：1）一般现在时：2）一般过去时：3）一般将来时：4）过去将来时：5）现在进行时：6）过去进行时：7）现在完成时：8）过去完成时：9）情态动词：10）不定式：to be+done11）感官动词和使役动词的被动语态：be+seen/heard/found/let/had/made+todo12）短语动词的被动语态：把主要动词变成被动语态3．主动句变被动句的步骤：1）主动句宾语——被动句主语2）主动句be——被动句“be+done”（be要与新主语保持三方面一致：人称，数，时态）3）主动句的主语—被动句中放在介词by后面.用宾格.4）其他成分不变4．与被动语态相关的其他结构：1）be used for (doing) 被用来做2）be made in (China) 在…(地方)制造3）be made of/from 由…制成4）get dressed被穿上(衣服)5）be/become separated 失散/离婚/分手5．汉语中有一类句子不出现主语，在英语中常用被动结构表示1）It is/was said that…据说…2）It is/was reported that…据报道…3）It is/was supposed that…据推测…4）It is hoped that…希望…5）It must be admitted that…必须承认…6）It must be pointed out that…必须指出…7) It is well known that…众所周知/人们认为…8)It is generally considered …普遍认为…6．“get+done”结构用法：get 用作连系动词和过去分词连用构成被动语态，多用于口语，且其后不用“by+执行者”，本结构主要用来表示状态或结果。
passive voice
The room should be cleaned every day.(被 动语态) B)疑问句形式：
Can English be spoken by you?
Must English be studied well by us?
3）被动语态一般现在时结构： is/am/are/+过去分词 A)肯定句形式： 如：It is used for cooking. I am looked after well every day. Many trees are planted every year. B)疑问句形式： Is it used for cooking? Are you looked after well every day ? Are many trees planted every year?
否定句形式：
如：It was not used for cooking in the old days.
These trees were not planted last year.
4）含有情态动词被动语态的结构:情态动词 +be+过去分词 A)肯定句形式：
如:
English can be spoken by us.(被动语态)
否定句形式：
如：It was not used for cooking in the old days.
These trees were not planted last year.
4）含有情态动词被动语态的结构:情态动词 +be+过去分词 A)肯定句形式：
如:
English can be spoken by us.(被动语态)
九年级上册英语语法难点丨被动语态超详解
九年级上册英语语法难点丨被动语态超详解概念：语态(Voice)是动词的一种形式，用以表示主语和谓语之间的关系。
英语的语态包括两种形式：主动语态(active voice)和被动语态(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。
被动语态是动词的一种特殊形式，一般来说，只有需要动作对象的及物动词才有被动语态。
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。
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。
English is spoken by many people.主语English是动词speak的承受者。
He opened the door.他开了门。
(主动句)The door was opened.门被开了。
(被动句)构成His bicycle was stolen.The building has been built in 2000.通过上面的例句，可以看出，“被动语态”的构成是：be + 过去分词( + by + 动作执行者)形式被动语态由助动词be加及物动词的过去分词构成，强调动作是由什么人或什么东西而发出时，常用介词“by +行为发出者”，即be+done+by+行为发出者。
被动语态可用于各种时态，通过助动词be的变化来表示：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(1)You must hand in your homework after class.Your homework must be handed in after class.(2)He can write a letter with the computer.A letter can be written with the computer by him.初中英语八大时态：一般现在时一般过去时一般将来时现在进行时过去进行时过去将来时现在完成时过去进行时运用：第一种情况：不知道动作的执行者，就是不知道是谁干的。
passive voice
Improve communicative skills
I study.I strive. I succeed.
Change the following tences into passive voice.
• • • • • 1. My grandfather built the house in 1980. The house was built in 1980 by my grandfather. 2. I have watched that movie for many times. That movie has been watched for many times by me. 3. He usually prepares for the dictation a day earlier. The dictation is usually prepared for a day earlier by him. 4. They are talking about the news together. The news is being talked about by them.
Improve communicative skills
I study.I strive. I succeed.
I. 语态的形式 (Forms of Passive Voice) write
一般 现在 (主动) 进行 完成
write writes
am is writing are
have written has have been written has
• • • • •
listen to, get rid of, look after, think of, talk about, find out, give up, put off, work out等。 The patient is being operated on. The problem is solved. It needn't be talked about. His friend was knocked down by a car. Several trees were blown down in the night. The sports meet will be put off because of the bad weather.
被动语态 (Passive Voice)
被动语态(Passive Voice)语态(Voice)，作为一个语法范畴，是表示主语和动词之间的主动或被动关系的动词行式。
英语动词有两种语态：主动语态(Active V oice)和被动语态(Passive Voice)。
当主语为动作执行者即施动者时，动词用主动态；如果主语是动作的承受者即受动者时，动词便用被动态。
例如：(1) John helped Peter.(2) Peter was helped by John.句(1) helped是主动态；句(2)was helped是被动态,可见主动态是无标记的，而被动态是有标记的。
构成被动语态由助动词be的时态之一和及物动词的过去分词构成。
被动语态可用于各种时态，其时态变化通过助动词be的不同形式来体现。
如：一般现在时的被动态构成形式为助动词am/is/are + 过去分词；而一般过去时的被动态构成形式为was/were + 过去分词。
本册要掌握的被动语态形式有：一般现在时：am/is/are + 过去分词e.g. Football is played all over the world.I’m often asked to do this work.我常常被派做这项工作。
一般过去时：was/were +过去分词e.g. The terracotta warriors were found in 1974 near Xi’an.They were discovered by workers in a field outside the city.When was the building completed?这座大楼什么时候建成的？一般将来时：will (shall) + be +过去分词be going to + be + 过去分词e.g. The result of the exam will be known soon.They are going to be given a difficult test.一般过去将来时：should(would) be+过去分词e.g. The teacher said the results would be published soon.He told me that the film would be shown the next week.现在进行时：am/is/are + being +过去分词e.g. The new airport is being built by a foreign company. 一家外国公司正在承建这座新机场。
Passive voice
二 构成
动词的被动语态由“助动词be+ 及物动词的过去分词”构成。当 主动句变为被动句时，原来的宾 语变成了主语，原来的主语变成 了介词by 的宾语。主动句与被 动句的结构虽然不同，但动作的 执行者和承受者的关系并没有改 变。
He is regarded as a brilliant. 他被认为很有才气。 This book was written in 1969. 一般现在时： am / is / are done 这本书是 1969 年写成的。 一般过去时： was / were done The broken bike is being repaired now.
比较： rise, fall, happen是不及物动词；raise, seat是及 物动词。 The price has been risen. (F) The price has risen. (T) The accident was happened last week. (F) The accident happened last week. (T) The price has raised. (F) The price has been raised. (T) Please seat. (F) Please be seated. (T)
The book was given to Mr. Smith yesterday ( by me). Mr. Smith was given a book yesterday (by me).
3. 含有介词动词的主动句的转换。
人家从不听他 They have never listened to him. 的话。
工作将于三小时后完成。 The baby must be looked after well. 这孩子必须被好好照顾。
passive voice
被动语态
passive voice
1. the passive voice definition 定义 2. The passive voice form 构成 3. The usege of the passive voice用法 4. Exchange ways 主动变被动语态方法
一.the passive voice definition 定义
• 1.动词的语态表示主语和谓语之间的关系。 • 2. 英语语态： ① 主动语态 ： 主语是谓语动词的执行者 ② 被动语态： 主语是谓语动词的承受着 EG : I cleaned the window yesterday. The window was cleaned by me yesterday .
主动变被动 steps
• 1. 分析原句的时态 • 2. 分析宾语，确定被动的对象 • 3. 记得 宾语的单复数和be 的形式与原句时 态一致 • 4. 检查其他成分一一对应，别缺少或加多。 • 5. 核对
• 1． We often use a recorder in our English class. • .A recorder is often used in our English class.
四. Exchange ways 主动变被动语态方法
• 1. 主句句宾语变为被动句的主语， 若主动 句宾语 是人称代词，要将宾格变主格，并 加by 引导。 • We asked him to sing a song . • He was asked to sing a song by us. • 2. 带双宾的谓语变被动句。 She gave me a book . I was given a book by her . A book was given to me by her .
Passive voice
Many people speak English.
(主动句 主动句) 主动句
English is spoken by many people. He opened the door. The door was opened.
被动语态由“ ＋ 构成. 被动语态由“be＋P.P”构成 构成 的变化表现出来的。 人称、数和时态的变化是通过be的变化表现出来的 人称、数和时态的变化是通过 的变化表现出来的。
(2)强调动作的承受者 而不强调动作的执行者 强调动作的承受者,而不强调动作的执行者 强调动作的承受者 而不强调动作的执行者. The window was broken by Mike. 窗户是迈克打破的。 窗户是迈克打破的。
主动语态和被动语态结构的转换：
主动语态:主语 主语＋谓语＋宾语 主语 被动语态: 主语 ＋ be+过去分词 ＋ by+宾语 过去分词 宾语
带双宾语的动词主要有以下几个：
① ② ③ ④ ⑤ ⑥ ⑦ ⑧ ⑨ ⑩
give sth to sb=give sb sth sell sth to sb=sell sb sth pass sth to sb=pass sb sth take sth to sb=take sb sth bring sth to sb=bring sb sth send sth to sb=send sb sth hand sth to sb=hand sb sth buy sth for sb=buy sb sth keep sth for sb=keep sb sth make sth for sb=make sb sth
have been closed
含有情态动词的被动语态
含有情态动词的主动句变成被动句时:情态动词＋ ＋ 含有情态动词的主动句变成被动句时 情态动词＋be＋p.p 情态动词 原来带to的情态动词变成被动语态后 的情态动词变成被动语态后“ 仍要保留 仍要保留。 原来带 的情态动词变成被动语态后“to”仍要保留。
注意那些弱化句子的动词——passivevoice
注意那些弱化句子的动词——passivevoice律师是一个强调专业性的行业，legal writing需要具有很强的说服力，并且经常给客户发出采取行动的指令。
语气强烈的动词（strong verbs）给人印象深刻，具有行动力；而语气相对弱的动词（weak verbs）则常常使legal writing陷入浑浊的泥潭中，使读者阅读困难，甚至搞不清需要怎样进行下一步，因此，需要特别注意弱化句子的动词。
我们今天先看看第一个弱化句子的第一种情况——passive voice 被动语态。
大家都知道，主动语态中，你做事情；而在被动语态中，事情临到你头上来，比如，“Kate drives the car”是主动语态，而“The car was driven by Kate“就是被动语态。
再看看以下例子: 被动：In 1998, only ten executives were covered by Article 12;主动：in 1998, Article 12 covered only ten executives.被动：Prospective investors are urged to consult their own tax advisers;主动：We urge prospective investors to consult their own tax advisers.被动：The 2001 Plan is intended to facilitate key employees in earning a greater degree of ownership interest in the Company;主动：With our 2001 plan, we intended to help key employees obtain a greater ownership interest in the Company.这是Bryan Garner所举的例子，根据他的说法，相对于被动语态，主动语态有四个好处：第一，需使用的词汇更少；第二，能更好地显示时间顺序，主动语态的模式为：行为人-行为-行为接收方；但被动语态的模式为：行为接受人-行为-行为人；第三，阅读起来更容易，因为它的语法符合英文读者的期待，即句子的主语从事了动词所指明的行动；第四，使写作活泼有生气。
被动语态(passive voice)
be worth(值得)+动名词
The film is very instructive and is well worth seeing.
Life won't be worth living without friendship.
系动词不用被动语态
Vegetables stay fresh when stored in the fridge. Many problems remain unsettled. The flowers smelling sweet (= which smell sweet)
含有情态动词的被动语态
We can not find him. He can not be found.
含情态动词的被动式： can/may/must be + done
Change the following sentences into passive voice
1.Has anybody fed the birds? Have the birds been fed ? 2.People will never forget the accident. The accident will never be forgotten. 3.They are repairing the car in the garage. The car is being repaired in the garage. 4.Someone must have turned on the light without your notice. The light must have been turned on without your notice.
passive voice
2．—“The ceremony has already started.” —“Look! The flag is ______ now.” A．being raised B．risen C．being rose D．raising
答案 A。 rise vi.升起，不能有被动形式， 故B, C不能选用。 raise vt.举起，升起。 后要接宾语，故 D不适用。 being raised 正在被升起，正符合题意。
被动语态（passive voice） 主语 谓语
More than eight million tourists visit Paris every year.
时间状语 宾语 动作发出者 主语 谓语 Paris is visited by more than eight million tourists every year. 时间状语
答案 B。 break out, last 均为不及物动词 （短语），没有被动语态。
6．Come and sit down by the fire. Your hand ______ . A．feels so cold B．is felt so coldly C．feels so coldly D．feel so cold
A. sold C. were sold B. had been sold D. would sell
2. As the years passed, many occasions — birthdays, awards, graduations — ________ with Dad’s flowers. (2007湖南) A. are marked C. have marked B. were marked D. had marked
复习—被动语态passive voice
② 一般过去时的被动语态: was/were + done
1. Soft drinks _c_a_n__’t__b_e__t_a_k_e__n_ (can, take) into the Expo site.
2. Sunglasses s__h_o_u__ld___b_e__n_e__e_d_e__d_ (should, need) for ladies
In the past
1. 河流污染严重 2. 树木被砍伐(cut down)。
3. …
Now
1. 污染的河流已经被清理干净。 2. 大量的花草树木被种植在城区。
3. …
In the future
1. 更加重视绿化。 2. 设立更多的公园让人们有休闲娱乐的场所。
3. …
Better City, Better Life -- My hometown, Haiyan
主语
谓语
二、被动语态的构成：
by us.
宾语
被动语态
助动词be +及物动词的过去分词(done)
You and Me
The song is known by the boy. The song is liked by the girl.
被动语态 被动语态
Hale Waihona Puke ① 一般现在时的被动语态:am/is/are + done
B_TAw_heue_eigjr_iue2n_s9g_ptt_eho8_rntOf_ho,_Al2ry_m0um_0ge_8pud_.isc_t(Op8etphr,ef2no0ir0nm8g).
CAelroetmoof npyrogwraasmhseld in wonderfully. The song
Grammar06_passive_voice
Unit 6 Passive Voice
1. Great changes __ (have been taken place, have taken place) in my hometown. 不及物动词没有被动语态） （不及物动词没有被动语态） 2. The book __ (costs, is cost) 10 yuan. 主动形式表被动意义） （主动形式表被动意义） 3. This type of records __ (is sold, sells) well. 4. This kind of shirts __ (washes, is washed) well. 5. The novel _ (reads, is read) well. 6. Ripe apples __(picks, are picked) easily. 7. The clothes __ (is felt, feels) very soft. 8. The dish __ (tastes, is tasted) delicious. 感官动词+形容词可以表示被动意义 形容词可以表示被动意义） （ 感官动词 形容词可以表示被动意义） 9. The book is worth __ (being read, reading). 10. The children need __ (looking after, being looked after)
2.
3.
4.
Unit 6 Passive Voice
《大学英语语法》第十讲 大学英语语法》
5. If the work __ by the end of the month is delayed, the construction company will fined. A. to be completed B. will be completed C. had been visited D. has completed Each soldier and sailor __ a rifle. A. are given B. was given C. were given D. have been given The woman writer and Oscar Award candidate __ a collection of short stories. A. have just turned out B. have just been turned out C. has just turned out D. has just been turned out Anything that __ falls towards the centre of the earth because of the pull of gravity. A. is dropping B. drops C. is dropped D. dropped
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Passive Voice
Verbs show whether the subject performs the action or receives the action. This is called a verb’s voice.
If a verb is in the active voice, the person who performs the action is the subject of the verb.
If a verb is in the passive voice, the thing or person affected by the action is the subject of the verb.
If the subject acts, i.e., the subject is the agent or doer of an action, the verb takes the form of active voice;
If the subject is the patient or recipient of the action, the verb takes the form of passive voice.
Voice constraints
1) Some transitive or stative verbs do not occur in the passive.
The students lacked experience.
2) Some “verb+noun” combinations can never take the passive.
The medicine took effect.
3) Some passive sentences do not have active transformation.
The moon is risen now.= The moon has risen now.
He has gone . = He has gone .
4) Some verbs only have passive voice.
I was born in Jilin.
The forms of passive voice
Basic form:
NP + be done + (by + NP + ...)
Varieties:
(1) phrasal verbs
(2) non-finite verbs
(3) finite verbs in different tenses
Cases where the passive is used?
a)Passive voice is used when we more interested in the event itself than in the agent.
Eg : Dozens of people were killed in the hurricane.
b) The passive is used when the agent is unknown or when we wish to make a statement sound impersonal perhaps out of modesty.
Eg : The book was published last year.
My book will be finished soon.
c) T he passive is used and the agent with “by” is expressed when we wish to stress the doer of the action.
Eg : It was invented by Graham Bell.。