Question

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

Answer 1

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

Answer 2

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

追问

可以举一个例子吗 谢谢

追答

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）