3. 过去完成时也是一般过去时的过去时,用来表示叙述者或主语在过去的某一时刻回顾更早的动作:
例如:He met her in Paris in 1977.He had last seen her ten years before.Herhair had been grey then; now it was white.(1977年他在巴黎遇见了她。他上一次见到她是十年之前。那时她的头发是灰白的,这时已经全白了。)