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.