各种时态的被动语态怎么用

种时态的被动语态举例（以动词do为例） 1．一般现在时（am/ is/ are +done）
English is spoken by lots of people in the world. 世界上的许多人都说英语。 Class meeting is held every Thursday. 每周四都举行班会。 The classroom is cleaned by the students every day. 学生们每天都打扫教室。 2．一般过去时(was/ were +done)
The cup was broken by the boy. 杯子被那个男孩打碎了。 He was saved at last. 他最终获救了。
My bike was stolen. 我的自行车被偷了。
3．一般将来时与过去将来时(will/ shall be +done; would/should be +done) A speech will be given this afternoon. 今天下午有一个演讲。 A new road will be built next year. 明年要修一条新马路。
I thought thousands of people would be helped. 我认为将有数千人得到帮助。 4．现在进行时与过去进行时(am/ is/ are being +done; was/ were being +done) The machine was being repaired at this time yesterday. 昨天这时，机器正在被修理。 The problem is being discussed now. 问题正在被讨论。
A bus is being pushed by the passengers. 路人正在推一辆公共汽车。 5．现在完成时(have/ has been + done)
Two hundred trees have been planted by now. 到现在为止，已经种了二百棵树了。
The book has been read many times by me. 这本书已经被我读了许多遍了。
6．过去完成时(had been+done)
They said they had been invited to the party. 他们说已经被邀请参加晚会了。 She found the house had been destroyed by the storm. 她发现房子已经被暴风雨摧毁。
He had been tortured by the illness for many years before he died. 他在去世前已经被疾病折磨很多年了。 7.含有情态动词的被动语态
情态动词的被动语态结构为：情态动词+be+过去分词；其时态及句型的变化仅由情态动词完成，"be+过去分词"部分不变。如： Tables can be made of stone.桌子可由石头制造。
Tables could be made of stone at that time. 那时桌子可由石头制造。（一般过去时） Can tables be made of stone? 桌子能用石头制造吗？（疑问句）
动词的主动形式表示被动之意
系动词无被动语态：以主动形式表示被动之意 常见的系动词有： ① be动词
② ……起来（7个）：look/seem/appear, feel(感觉，摸起来), sound, smell, taste e.g. She seems/appears happy. It smells terrible.
③ (逐渐)变得/变成：become, grow, get, turn, come, go e.g. His wish has come true.
People often went hungry in the old days. The tree is growing tall. ④ 保持：keep, stay
e.g. We must keep quiet in the reading room.
下列动词（词组）没有被动式：
1、happen, take place, break out, belong to
2、不及物动词sell, wash, read , write,等，常用主动形式表示被动意义。 ○
1、An accident was happened yesterday.（×）昨天发生了一起事故。 An accident happened yesterday.
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2、The flower smells sweet.这花闻起来很香。 ○
3、The watch looks good.这表看起来很好。 ○
4、This book sells well.这本书畅销。 ○
5、The kind of cloth washes well. 这种布很容易洗。 ○
6、The article reads well. 这篇文章读起来很好。