混天豹变形金刚wb:I had been sitting的意思.,时态,,相关句子-举例

来源：百度文库 编辑：高考问答 时间：2024/04/26 03:52:10

过去完成进行时
表示过去动作持续到现在.并且会继续进行
我从过去一直坐到现在
I HAD BEEN PAINTING THE WALL
我一直在刷墙

"我已一直坐着"
这是过去完成进行时,

过去完成进行时表示过去某一时刻之前开始的动作或状态一直延续到过去某一时刻。例如：
It had been raining cats and dogs for over a week and the downpour had caused landslides in many places.

I had been sitting 和 I have been sitting 的区别 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 请教had been 的用法 The letter I had been looking forward _____at last. had been是怎么用的?谢谢! HAD BEEN TO had been done与had done的区别，何时选前者，何时选后者？ had been done与had done是什么结构 他们的用法是什么 have been与had been的区别？（谢瓜了）