I had been sitting的意思.,时态,相关句子-举例

I have been sitting 的意思.,时态,相关句子-举例 I had been sitting 和 I have been sitting 的区别 我想问一下完成时态中 has been ,have heen 和had been 能举例吗, had been什么时态 请分析句子的时态People had been drinking white the willow bark for t my husbnad and i had been married 30 years. 如何理解用过去完成时的被动时态. 英语时态的两个句子 I had/ have had two serious accidents in my life.T 英语the table where I had been sitting the place which you vis had been doing是什么时态 had been doing 是什么时态? I had been a fair weather friend 我知道后面是狐朋狗友的意思,前面的had been?过 这句话用的什么时态?I told you I had never had played tennis before.句子