英语语法过去完成时怎么说

Question

如题所述

Answer 1

过去完成时常用的时间状语有：
1. by the end of last+时间段. By the end of last term, we had learned 5000 new words.
2. By the time sb. +动词过去式如：The bus had already left by the time I got there.
3.By (the time of) last year ,we had built two bridges.