去完成进行时与过去完成时的用法哪个表示动作延续的时间长一些这两个时态如何使用

你说的的是 had been doing 和 had done 结构吗?
过去完成进行时(had been doing )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.
过去完成时(had done)表示过去某时间前已经发生的动作或情况,这个过去的时间可以用by,before等介词短语或一个时间状语从句来表示；或者表示一个动作在另一个过去动作之前已经完成.
1)We had just had our breakfast when Tom came in.
2)By the end of last year they had turned out 5, 000 bicycles.
至于哪个延续时间长?只有前者表动作的持续,后者表动作的完成.