1分别用for短语, since短语或从句造句用现在完成时 2用that is why造句

分类: 作业答案 • 2023-01-13 15:40:37

问题描述：

答

I have been here for 3 years.for延续,加时间段.
I have been here since 2009.since加时间点.
that is why 是主语从句中的表语从句.That is why i come here.这就是我来这的原因.

1分别用for短语, since短语或从句造句 用现在完成时 2用that is why造句