2. 八种时态的被动语态：(变 be 的时态即可，done不动)
1)一般现在时：am / is / are done
①People grow rice in the south of the country.
→Rice is grown in the south of the country.
②The school doesn\'t allow us to enter the chemistry lab without a teacher.
→We are not allowed to enter the chemistry lab without a teacher.
2)一般过去时：was / were done
①They agreed on the building of a new car factory last month.
→The building of a new car factory was agreed on last month.
②The students didn\'t forget their lessons easily.
→Their lessons were not easily forgotten.
3)一般将来时：will be done
①They will send cars abroad by sea.
→Cars will be sent abroad by sea.
②They will give plenty of jobs to school-leavers.
→Plenty of jobs will be given to school-leavers.
4)一般过去将来时：would be done
①The manager said they would complete the project by the end of the year.
→The manager said the project would be completed by the end of the year.
② The workers told me they would mend the car as soon as possible.
→The workers told me that the car would be mended as soon as possible.
5)现在进行时：am / is / are being done
①The radio is broadcasting English lessons.
→English lessons are being broadcasted on the radio.
② We are painting the rooms.
→The rooms are being painted.
6)过去进行时：was / were being done
①The workers were mending the road.
→The road was being mended.
②This time last year we were planting trees here.
→Trees were being planted here this time last year.
7)现在完成时：have / has been done
①Someone has told me the sports meeting might be put off.
→I have been told the sports meeting might be put off.
②He has brought his book here.
→His book has been brought here.
8)过去完成时：had been done
①When 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.
② The whole country was very sad at the news of his death; people had considered him to be a great leader.
→The whole country was very sad at the news of his death; he had been considered to be a great leader.
3. 含有情态动词的被动语态：情态动词 be done
①You must hand in your compositions after class.
→Your compositions must be handed in after class.
②He can write a great many letters with the computer.
→A great many letters can be written with the computer by him.
“Mr. White, the cup was broken after class. ”
These records were made by John Denver.
3)把主动语态的主语变为介词by 的宾语，放在被动语态里谓语动词之后，by 短语可以省略。
My aunt invited me to her dinner party.
→I was invited (by my aunt ) to her dinner party.
The school set up a special class to help poor readers.
→A special class to help poor readers was set up in the school.
We have bought a new computer.
→A new computer has been bought. (正确)
→A new computer have been bought. (错误)
My uncle gave me a present on my birthday.
→I was given a present on my birthday.
→A present was given to me yesterday.
3) 由动词 介词或副词构成的短语动词，要把它们作为整体看，即把它们看成一个及物动词，介词或副词不可拆开或漏掉。
The patient is being operated on.
The problem is solved. It needn\'t be talked about.
His request was turned down.
The sports meet will be put off because of the bad weather.
We always keep the classroom clean.
→The classroom is always kept clean.
She told us to follow her instructions.
→We were told to follow her instructions.
注意：在see, watch, hear, notice, listen to, look at, make, feel等动词后作宾语补足语的动词不定式都不带 to，但改成被动语态后必须还原to。
We often hear him play the guitar.
→He is often heard to play the guitar.
5)当主动句的主语是nobody, no one等含有否定意义的不定代词时，被动句中将其变为anybody, 作by的宾语，并将谓语动词变为否定的被动语态。
Nobody can answer this question.
误：The question can be answered by nobody.
正：The question can not be answered by anybody.
6)当否定句中的宾语是anything, anybody, anyone等不定代词时，在被动句中应将其分别变为nothing, nobody, no one作主语，并将谓语动词变为肯定的被动语态。
They haven\'t done anything to make the river clean.
误：Anything hasn\'t been done to make the river clean.
正：Nothing has been done to make the river clean.
Who wrote the story?
误：Who was the story written?
正：By whom was the story written?
8)有些动词既是及物又是不及物，当它们和well, badly, easily等副词连用时，表示主语内在品质或性能，是不及物动词，用主动表示被动，这时不用被动语态，常见的有：write, read, clean, sell, wash, cook 等。
The cloth washes easily. 这布很好洗。
The new product sells well. 这新产品很畅销。
The books sell well. 这些书销量很好。
①感官系动词一般用主动形式表示被动意义，如：feel，look, seem, taste, sound。
— Do you like the material? 你喜欢这种材料吗?
— Yes, it feels very soft. 是的，它摸上去非常柔软。
②不及物动词没有被动语态，如：rise, happen, succeed, remain, lie等。
When we got to the top of the mountain, the sun had already risen.
After the earthquake, few houses remained.
I taught myself English.
误：Myself was taught English.
We love each other.
误：Each other is loved.不空