have been doing 和 be being done 感觉是一个意思啊

来源：学生作业帮编辑：大师作文网作业帮分类：英语作业时间：2024/11/11 06:49:24

have been doing 是现在完成进行时,表主动
be being done 是现在进行时的被动
意思两样
再问：可以举一个例子吗谢谢
再答： i have been skating for three hours 我已经溜冰三小时了（言下之意，我以前溜冰，现在还在溜冰，以后还会溜下去）因为是主动，所以主语是人 the bridge is being built 人们正在建桥我再造一个你也许认为意思差不多的 peple have been building the bridge 人们还在建桥，（过去建，现在还在建，以后还会一直建）

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