before I had finished speaking 分类：时间状语从句 定义 我还没说完，before引导的时间状语从句，主句常用过去完成时。 时态 从句过去完成时，主句一般过去时 例句 Before I had finished speaking, he left. She hung up before I had finished explaining. 相关术语 before 过去完成时 时间状语从句