has been doing have been done区别
人气：317 ℃ 时间：2019-10-02 08:58:39
解答
have been done 已经被完成The work has been done.工作已经完成.（被我们完成,含被动意）have been doing 完成进行时He has been playing computer games for 6 hours.他到现在为止已经连续6小时玩电脑游戏了.（可...
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