发布网友 发布时间:2022-04-22 13:46
共1个回答
热心网友 时间:2023-10-16 10:56
Since的用法
since是连词,可引导原因状语从句和时间状语从句.
1.引导原因状语从句,“既然”,表示一个既成事实的原因,用于句首.
如,Since everyone is here,let’s begin our meeting.
既然大家都到了,咱们开始开会吧.
2.引导时间状语从句,“自从”,用于以下两个句型:
1)It is /has been +some time +since 从句,从句用一般过去时,如,
It is /has been three years since I began to learn English.
自从我开始学英语已经三年了.
2)主语+ 现在完成时+ since 从句,从句用一般过去时,如,
I have worked here since I gradated from college.
我自从毕业以来就在这里工作.
以上是我自己总结的,希望对你有所帮助!