have been和are being的区别是什么?

have been和are being的区别是什么? have being done 和have been doing 的区别是什么?分别举个例子． had been 和 has/have been的区别是什么? having being done 和have been done 有什么区别 have gone to和have been to的区别是什么? 有have been being done和have being done吗?是什么时态? have been 和 has been的区别 have been和have gone的区别 have been 和have gone 的区别 having been shown 和being shown的区别 Being done和having been.done的区别? will have been doing和have been doing的区别