作业帮关于since引导的时间状语从句
来源：学生作业帮 编辑：作业帮 分类：英语作业 时间：2024/05/17 08:42:37
关于since引导的时间状语从句
She has changed much since I taught her.自从我不教她以来,她变化很大.
We haven't heard from John since he worked there.自从约翰不在那里工作以后,我们再也没有收到他的来信.
为什么延续性动词就要否定啊?根本原因是什么?
She has changed much since I taught her.自从我不教她以来,她变化很大.
We haven't heard from John since he worked there.自从约翰不在那里工作以后,我们再也没有收到他的来信.
为什么延续性动词就要否定啊?根本原因是什么?
since后的从句谓语动词是延续性的,从动作结束算起.是非延续性动词从动作开始算起.这些是固定的.如 It is 2 years since he came here .他来这两年了.（came非延续）
It is 2 years since he lived here.他不住这两年了.(lived延续)
It is 2 years since he lived here.他不住这两年了.(lived延续)