被动语态的五种形态的结构

is/are done
was/were done
was/were being done
has/have been done
had been done

http://www.sdhqedu.net/xkwz/yingyu/Article/ShowArticle.asp?ArticleID=937

is/are+done
was/were+done
has/have been+done
had been+done
情态动词+ be+done

一般现在时：am/is/are + done
eg:History is made by people.
现在完成时;has/have + been done
eg:The book has been translated into many languages
一般过去时：was/were +done
eg:The conference was held in August.
过去完成时：had + been done
eg:Production costs had been greatly decreased by the time the plan was made.
将来完成时：will/shall +be done
eg:The work will have been finished by the time he comes back.

其实还有三种被动语态;现在进行时，过去进行时，一般将来时。
现在进行时：am/is/are + being done
eg:A new railway is being built.
过去完成时：was/were + being done
eg:The