Question

过去完成时的结构

Answer 1

问：过去完成时的结构

答：亲 过去完成时是用来表示过去某个时刻或时间之前已经完成的动作或状态。其结构为“had + 过去分词”，通常还需要与时间状语一起使用，如“by the time”、“before”、“by”等。例如：- By the time we got there, the movie had already started.（当我们到达那里时，电影已经开始了。）- I had finished my homework before my parents came back.（我在父母回来之前已经做完了作业。）- She had lived in New York for two years before moving to Chicago.（在搬到芝加哥之前，她在纽约住了两年。）