have been done 什么东西?have been doing是现在完成进行时的被动语态嘛?

来源：学生作业帮助网 编辑：作业帮 时间：2024/06/05 17:34:43

have been done 什么东西?have been doing是现在完成进行时的被动语态嘛?

have been done 是现在完成时的被动语态 have been doing是现在完成进行时的主动形式.