现在完成是的结构是：have/has + 过去分词
been 是 be 动词的过去分词,主要有以下两种情况会用到 have/has been
1.be 动词的完成时,如
I have been a member of this club for two years.
我已经是这个俱乐部的成员两年了.（我加入俱乐部两年了.）
2.现在完成时的被动,即：have/has been + 动词的过去分词,如：
The flowers have been watered this morning.
这些花早晨已经被浇过了.