用法：1、过去某时间或动作之前完成的动作或状态( 过去的过去) 。2、过去某一时间的动作延续到过去另一时间常用时间状语： by that time,by the end of , when/before+ 从句，said/knew/asked 的宾从中动词构成:had+ 过去分词(-ed)以work 为例： had worked否定构成:had not+ 过去分词一般疑问构成：Had+ 主语+ 过去分词+ 其它？ Yes,I had. No,I hadnt.特殊疑问句举例： How many English words had you learned by the end of last term? When we got to the theatre, they had sold all the tickets.had sold got to the theatreNow过去的过去过去完成时是一种与过去时相比较而存在的时态，用以表示“过去的过去”的动作或状态。1.When we _(arrive) at the theatre, the play _(already start).a
