His bicycle was stolen.
The building has been built in 2000.
be + 过去分词 + (by+动作执行者)
Paper is made from wood. (纸是由木材生产出来的。)
The house is quite old. It was built in 1950. (这座房子太旧了。它是1950年建成的。)
He was wounded in the fight. (他在战斗在受伤了。)
Electricity is used to run machines. (电是用来开动机器的。)
Calculator can't be used in the maths exam.
Books and newspapers in the reading room mustnt be taken away. (阅览室的书籍和报纸不准带走。)
He was awarded first prize in that contest.
The construction of the new lab must be completed by the end of next month. (新实验室必须在下个月底前完工。)
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.
(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.
英语中的被动语态使用得比汉语要多，要普遍，许多课本乃至实际应用中都常常涉及到这个问题。一般说来，当强调动作承受者，不必说出执行者或含糊不清的执行者时，多用被动式。须注意的是，许多地方与汉语不同。注意那些汉语中没有"被……"的意思，英语却应该用被动态。还要注意，英语的被动态往往由"by"引出，而有用介词"by"的短语往往又不是被动态，而是系表结构。还有些特殊现象，如：known to man(人类......所知)，on foot步行(美国人有时用by foot)，in carraige(乘四轮马车)等等。还有假主动，真被动的十几个常用词的用法，以及so heavy to carry而不用so heavy to be carried 等习惯用法。有关这类情况，做到心中有数对全面掌握被动态，准确无误地解答习题非常关键，被动态必须涉及的是动词的各种时态变化的问题。英语的时态本来很复杂，怎样记住各自的被动形式呢? 首先要明确"将来进行无被动，现在完成进行
一般将来shall (will) do，被动变do为be done。
将来进行无被动，shall (will) be doing,
现在完成进行同，have (has) been doing。
现、过进行be doing, 被动be加being done。
一般现、过用be done, be有人称、时、数变
例：1、主动：The children gave the foreign guests a warm welcome.
被动：The foreign guests were given a warm welcome by the children.
2、主动：People regard him as brilliant.
被动：He is regarded as brilliant by people.
以上两例都是一般时态用be done的例子，be有人称、时、数变，第三人称foreign friends是复数，时态一般过去时，所以"be done"就是were given，而People regard him as brilliant一句，被动后的"be done"就变成单数第三人称is regarded的形式了。
This speech was delivered by comrade Wang. (was delivered即一般过去时的被动态)
There was a serious train accident near the border. Two people were killed and twelve were injured.
A person who is truly honest is called a straight arrow. 直言不讳的人才是真正诚实的人。
A note was passed up to the speaker. 有人给讲演者递上来一张纸条。
John was elected president of the class instead of Harry. 乔治被选为班长而代替了亨利。
Volcanoes are described as active, dormant or extinct. 火山被描述为活的，沉睡着的，或者死的。
The soldier was killed, but the train was saved. 这位战士牺牲了，然而列车得救了。
He was thought to be clever but dishonest. 他被认为很聪明但不诚实。（别人认为他很聪明但不诚实）
The first zoological garden in the United States was established in 1874. 美国的第一个动物园是1874年建立的。
Families were often broken up; wives were taken away from their husbands and children from their parents.
The information is urgently needed. 急需这个资料。
Most environmental problems exist because adequate measures for preventing them were not taken in the past. 多数环境污染问题的存在，是因为过去没有采取适当的保护措施。
例：1、主动：We have studied English for 3 years off and on at the spare-time school.
被动：English has been studied for 3 by us years off and on at the spare-time school. (have随新主语变为has)
2、主动: They had produced 100 tractors by the end of last year.
被动: 100 tractors had been produced by the end of last year.
3、主动：They have set up a power station in their home town.
被动：A power station has been set up in their home town.
4、主动：They have warned us to be careful of rats.
被动：We have been warned to be careful of rats.
5、主动：People have piled plastic bags full of rubbish in streets.
被动: Plastic bags full of rubbish have been piled in streets.
6、主动：We have used nuclear energy to produce electricity.
被动：Nuclear energy has been used to produce electricity.
7、主动：No one has ever beaten him at tennis.
被动：He has never been beaten at tennis.
The person who owns the gun may try to deny that he has used it. But anyone seeing the smoke knows the gun has just been fired.
Today is Cilia's wedding day, she has just been married to Danel.
The subjects of these lectures have been announced by the lecture committee.
主动: Somebody had cleaned my shoes.
被动: My shoes had been cleaned by somebody.
When I returned I found that they had towed (toud) my car away, I asked why they had done this and they told me that id was because I had parked it under a "No Parking Sign".
被动：my car had been towed away. I asked why this had been done and told that ... it had been parked under a "No Parking Sign".
主动：They had build three ships by last December.
被动： By last December three ships had been built by them.
Research had been centred on the improvement of natural building materials before synthetics were created.
He did not say if all those steel pipes had been examined.
After plastic had been created, engineers were given a much wide choice of materials.
一般将来shall (will) do，被动变do为be done
即由shall do或will do变为shall done或will be done。
例：主动: We shall build several big modern power plants in our city next year.
被动：Several big modern power plants will be built in our city next year.
(shall do中的shall要随新主语变为will, do为be done.)
主动：I shall send my second boy to school next September.
被动：My second boy will be sent to school next September.
主动：In order to fool people cheaps and swindlers will make such bricks out of lead covering the "lead brick" with gold.
被动：Such bricks will be made out of lead covering the "lead brick" with gold by cheaps and swindlers.
主动：They will ask you a lot of strange questions.
被动: You will be asked a lot of strange questions.
被动句中的by引出的宾语，一般说来，如果是人称代词你、我、他等，均可省略，someone no one不由by来引出。如果是名词不能省略，但当今英语也都可省略了。
主动：The Chinese people will make more space explorations in the future.
被动：More space explorations will be made in the future by the Chinese people.
After a period of use, the batteries should be changed. 电池使用一段时间后，应该更换。
Usually, the electricity is on for 24 hours. But tomorrow it will be cut off in the day time. 通常是昼夜供电，明天白天将停电。
More peaceful uses will be found for nuclear explosives in the future. 在将来会发现更多的和平利用核爆炸的途径。
More hard work will be needed to make this wonder come true in a short time from now. 从现在起要使这些奇迹在短时间内成为现实还需要做更多的艰苦工作。
make...come true 使……成为事实; come true做宾补(见感使动词口诀)。
The machine will not be used again. 这机器不能再用了。
Will more gas be needed? 需要更多的煤气吗?
主动should (would) do，被动be done代原形。
主动：A few days ago we were still not quite sure whether we should carry out the new plan ahead of time.
被动：...whether the new plan would be carried out ahead of time.
主动：I did not say that we would change the equipment.
被动：I did not say that the equipment would be changed.
主动：My supervisor told me that he would give me a special tutorial a few days ago.
被动：My supervisor told me that a special tutorial would be given to me a few days ago.
主动: I never thought that be would bring me the information so early.
被动：I never thought that the information would be brought to me so early.
将来进行无被动，shall (will) be doing,
现在完成进行同．have (has) been doing,
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)
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)
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。
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。)
1. All the employees except the manager ______to work online at home.
A. encourages B. encourage C. is encouraged D. are encouraged
解析：主语是all the employees(复数) ，而不是the manager，排除答案A和C；又因all the employees与encourage是被动关系，要用被动语态，排除B，故选D。
2. A library with five thousand books _______to the nation as a gift.
A. is offered B. has offered C. are offered D. have offered
解析：a library是offer的承受者，要用被动语态，排除B和D；又因主语(library) 是单数，排除C；故选A。注意：with five thousand books是a library是定语。
—Don’t you think it necessary that he ______ to Miami but to New York?
— I agree, but the problem is ______ he has refused to.
A. will not be sent; that B. not be sent; that
C. should not be sent; what D. should not send; what
解析：因he与send是被动关系，排除D；又因it (is) necessary后的that从句的谓语要用“(should+) 动词原形”，排除选项A；答句中的表语从句不缺任何句子成分，用that；故选B。
Only after my friend came ______.
A. did the computer repaired B. be repaired the computer
C. was the computer repaired D. the computer was repaired
Good care must ______babies, particularly while they are ill.
A. take B. take of C. be taken D. be taken of
解析：由固定短语take good care of(好好照看) 是可知，good care与take是被动关系，排除A和B；选项C中又漏掉了of；故选D。
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