被动语态什么时候用have been？

　　一、现在完成时，构成：have/has+been+过去分词

　　Has the sports meet been put off until next Friday? 运动会已经推迟到下周五了吗?

　　二、过去完成时，构成：had+been+过去分词

　　The fire had been put off when the firefighters arrived.
消防队员到达时，火已经被扑灭了。

　　三、将来完成时，构成：will/shall have+been+过去分词

　　The book I’m working on will have been finished by the end of the year.
我正写的这本书今年年末将会完成。

　　四、过去将来完成时，构成：“would/should have+been+过去分词

　　I was told that the new road would have been officially opened at the end
of the year. 据说年底新路将正式开通。

　　其他形式的被动语态：

　　一、一般现在时，构成：am/is/are+过去分词

　　Most paper work is now done by compter. 现在大多数文书工作都是由电脑完成的

　　二、一般过去时，构成：was/were+过去分词

　　We were all moved to tears by th moving story. 我们都被那个感人的故事感动了

　　三、一般将来时，构成：will/shall+be+过去分词

　　More trees will be planed in and aroud our village. 我们村庄的里里外外要种植更多的树。

　　四、现在进行时，构成：am/is/are+being+过去分词

　　Is the accident now being looked into? 这个事故现在正在调查中吗

　　五、 过去进行时，构成：was/were+being+过去分词

　　The hall was being built last year. I’m not sure if it is completed.
这个大厅去年正在修建，我不知道现在完成了没有。