主要有
1一般现在时态 主语＋am/is/ are+过去分词
The boy is taken to the park every Sunday.
2一般过去世态 主语＋was/were+过去分词
The was lost last week.
3现在进行时态 主语＋am/is/ are+being+过去分词
Another new biulding is being built in our school.
4过去进行时态 主语＋was/were+being+过去分词
The road was being biult at that time.
4现在完成时态 主语＋has+been+过去分词
This kind of books have been sold out.
5过去完成时态 主语＋had+been+过去分词
By the end of last term,ten English songs had been taught.
6含情态动词 主语+情态动词＋be＋过去分词
The homework must be handed in tomorrow.
各种时态的疑问句和否定句遵循相应的变化规则.