has done是现在完成时态,且主语是单数第三人称,比如,He has finished his homework now,so his mother allows him to play outdoors.had done是过去完成时态,主语任意皆可 比如He had finished his homework yesterday afternoon,so his mother allowed him to play outdoors.being done是现在进行时态的被动语态,意为“正被……”比如:The building is being built now by the government .be done是被动语态,比如:The classroom needs to be cleaned.have been done是现在完成时的被动语态 比如:These classrooms have been cleaned ,you can do something else .had been done是过去完成时的被动语态 ,用于过去时态,跟现在完成时的被动语态用法一样
has done 说的是第三人称(他,她,他们,或人名)已完成的动作had done 指动作发生在过去的过去,既是过去完成时的being done 指在过去的某个具体时刻的动作被主语发出,既是过去进行时be done 指动作被主语发出,既动作被做have been done 指被主语发出的动作已完成had been done 指被主语发出的动作已在过去就已完成(可能与老师说的有点出入,因为是本人自己做的总结,有错,望谅解)本回答被网友采纳
第2个回答 2013-10-31
has done,现在完成时,had done过去完成时,be done一般被动语态,have been done现在完成时被动语态,had been done过去完成时被动语态