being done / having been done /have been doing 麻烦请告诉我它们的用法各自代表的意思

Question

还有它们之间的区别，感激不尽

Answer 1

have been doing 一直在做某事，现在完成进行时，它是做谓语用的
being done 和having been done是非谓语动词，being done表示与所修饰名词或主语为被动关系，而且动作真在进行，在句中可以作定语和状语。如：
The building being built will be our classroom.
Being badly wounded, he was sent to hospital.
而having been done 为Ving形式的完成式。只能在句中作状语，表示动作发生在谓语动词动作之前，而且与主语为被动关系。
Having been misunderstood, he boy left his home.

Answer 2

being done / 现在进行时的被动语态
having been done 现在完成进行时的被动语态
have been doing 现在完成进行时

Answer 3

have been doing 一直在做某事，现在完成进行时，它是做谓语用的
being done 和having been done是非谓语动词，前者表示某事正在被做，后者表示某事已经被做。
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