一、被动语态讲解
1. 被动语态的基本时态变化
被动语态通常为十种时态的被动形式, 被动语态由be＋过去分词构成，be随时态的变化而变化。以do为例，各种时态的被动语态形式为：
1) am/is/are +done (过去分词) 一般现在时
例Visitors are requested not to touch the exhibits. 参观者请勿触摸展览品。
Our classroom is cleaned every day. 我们的教室每天都要打扫。
This car is made in China. 这輛车是中国制造的。
People grow rice in the south of the country.→Rice is grown in the south of the country.
大门英语 The school doesn’t allow us to enter the chemistry without a teacher. →We are not allowed to enter the chemistry without a teacher.
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.
任务的所有准备工作已经完成,我们准备开始。
3） am/is /are being done 现在进行时
例A new cinema 入团誓词内容is being built here． 这里正在建一个新的电影院。
A new factory is being built in our city now. Some trees are being cut down in the park.
The radio is broadcasting English lessons.乙烯→English lessons are being broadcasted on the radio.
We are painting the rooms. 苹果6和6s的区别→ The rooms are being painted.
4） was/were done 一般过去时
例I was given ten minutes to decide whether I should reject the offer. 给了我十分钟来决定我是否应该拒绝提供。
His desk was cleaned just now. The station 长针眼的原因was built in 1928.
They agreed on the building of anew car factory last month. →The building of a new car factory was agreed on last month.
The students didn’t forget英语点 his lessons easily. →His lessons were not easily forgotten.
5） had been done 过去完成时
例 By the end of last year, another new gymnasium had been completed in Beijing. 到去年年底，另一个新的体育馆在北京已经修建完工。
When I got to the theatre, I found they had already sold out the tickets. →When I got to the theatre, I found the tickets had already been sold out.
The whole country was very sad at the news of his death. People had considered him to
be a great leader. →He had been considered to be a great leader.
6） was/were being done 过去进行时
例A meeting was being held when I was there. 当我在那儿的时候，会议正在举行。
The workers were mending the road. →The road were being mended.
This time last year we were planting trees here. →Trees were being planted here this time last year.
7） shall/will be done 一般将来时
例Hundreds of jobs will be lost if the factory clos. 如果工厂关闭, 成百上千的工作岗位将丢失。
They will nd学校门事件 cars abroad by a. →Cars will be nt abroad by a.
They will give plenty of jobs to school-leavers. →Plenty of jobs will be given to school-leavers.
8） should/would be done 过去将来时
例The news would be nt to the soldier's mother as soon as it arrived.
消息一到，就会送给那位士兵的母亲。
排球发球教案
The manager said they would complete the project by the end of the year. →The project would be completed by the end of the year.
The workers told me they would mend the car as soon as possible. →The workers told me the car would be mended as soon as possible.
9） shall/will have been done 将来完成时（少用）
例The project will have been completed before July. 这个项目将在7月之前完成。
2. 被动语态的特殊结构形式
1)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. 婴儿应该受到保姆良好的照顾。
2) 有些动词可以有两个宾语，在用于被动结构时，可以把主动结构中的一个宾语变为主语，另一宾语仍然保留在谓语后面。通常变为主语的是间接宾语。
His mother gave him a prent for his birthday. → He was given a prent by his mother for his birthday.
3) 当“动词+宾语+宾语补足语”结构变为被动语态时，将宾语变为被动结构中的主语，其余不动。
例Someone caught the boy smoking a cigarette. →The boy was caught smoking a cigarette.
4）在使役动词have, make, get以及感官动词e, watch, notice, hear, feel, obrve等后面不定式作宾语补语时，在主动结构中不定式to要省略，但变为被动结构时，要加to。
例Someone saw a stranger walk into the building. →A stranger was en to walk into the building.
5) 有些相当于及物动词的动词词组，如“动词＋介词”，“动词＋副词”等，也可以用于被动结构，但要把它们看作一个整体，不能分开。其中的介词或副词也不能省略。
例The meeting is to be put off till Friday. 会议将推迟到星期五。
3. 非谓语动词的被动语态
v.+ ing 形式及不定式 to do 也有被动语态(一般时态和完成时态) 。
例I don't like being laughed at in the public.
二、 如何使用被动语态
学习被动语态时，不仅要知道被动语态的各种语法结构，还要知道在哪些情况中使用被动语态。
1. 讲话者不知道动作的执行者或不必说出动作的执行者 (这时可省 by 短语)。
例 My bike was stolen last night.
2. 借助被动的动作突出动作的执行者。
例 I was given ten minutes to decide whether I should accept the offer.
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）
三、 It is said that+从句及其他类似句型
