has been doing have been done区别

has been doing have been done区别

题目
has been doing have been done区别
答案
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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