网友提问时叙述不够准确，或者说概念不够清楚。英语有16种时态，其中有六种时态没有被动语态形式。其原因是被动语态的be done用于将来或过去将来进行时时，会出现will/would be being done。在正确语速的口语交流中，be being的发音是很拗口的。另外四个完成进行时的被动语态也会遇到同样的尴尬：have/had/will have/would have been being done. 其中的been being是非常拗口的。因此，现代英语中这六种时态不用被动语态。当将来或过去将来进行时需要用被动语态时，用一般将来或过去将来时的被动语态形式代替。四个完成进行时的被动语态用完成时的被动语态代替。
因此，现代英语中被动语态有10种时态形式（不是10中被动语态）：四个一般时，四个完成时，现在进行时，过去进行时。
It is done
it was done.
It will be done.
It would be done.
It has been done.
It had been done.
It will have been done.
It would have been done.
It is being done.
It was being done.
除了除了十种时态形式外，被动语态还可用于情态动词之后，其形式同will/would后的被动语态形式。此外，被动语态还可用于非谓语动词，例如不定式to be done, to have been done. 现在分词或动名词，being done, having been done.
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