the building are pulled down after having stood empty many years.中having stood 是什么时态啊?having stood是什么时态还是什么用法?

the building are pulled down after having stood empty many years.中having stood 是什么时态啊?having stood是什么时态还是什么用法?
the building are pulled down after having stood empty many years.中having stood 是什么时态啊?
having stood是什么时态还是什么用法?

the building are pulled down after having stood empty many years.中having stood 是什么时态啊?having stood是什么时态还是什么用法?
过去分词表状态.

现在完成时
having 现在进行中
stood 已经完成的一个动作

have stood 是现在完成时, 很简单.
为什么用having 呢? 是因为after, 介词后面要接动词要改成动名词的形式,GOT IT? ^_^

1.介词后用动名词
2.have done形式
3.当'闲置'讲

现在分词做主语 after后省略了主语the building
having stood是现在完成时 强调这栋楼很久都空着没用过了

after是个介词,having stood是动名词的完成时态.表明楼房空置许多年(先发生)后被推倒了.