[简答题]Answer the following question.​Please list the two basic uses of the past perfect. Given an example for each.

正确答案:

Past perfect has two basic uses: finished use and unfinished use. E.g. He had lived here before I moved in. I had known him for quite a long time before you offered to introduce him.

题目解析

本题考查的是过去完成时的两种用法,注意,需要分别给两个用法举例。过去完成时有两种基本用法:已完成用法和未完成用法。答案中的第一句话是已完成用法,因为文中的他已经搬走了,他住在这里是一个已经结束的状态。而第二句则是为完成的用法,因为认识他是一个持续性的动作,且并不会结束。

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