精选优质文档-倾情为你奉上 过去完成进行时过去完成进行时结构：主语 +had+been +doing （have/has随人称的变化而变化） 语法比较：过去完成进行时与的用法很相近，它通常表示某个过去正在进行的动作或状态，持续到过去某个时刻，还未完成，一直持续到之后的当前才结束 He had been waiting for two weeks He was still waiting（有一个表示一段时间的） Up to that time he had been translating those books（He was still translating at “that time”） He had been writing the letter till two oclock He was now thirty years oldHe had been gambling since he was ten（He was still gambling at
