having been done是过去完成进行时的被动语态,表示过去某一时间正在发生的被动的动作：that shirt having been washed by my mom yesterday.
have been done是过去完成时,标一件事已经被完成了：that shirt have been washed by my mom three days ago.
关于having been done 和 have been done的区别
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