Since引导的从句一般要用什么时态.??

Question

要全还有例句喔..
谢了..

Answer 1

一般过去时。

1) since +过去一个时间点 (如具体的年、月、日期、钟点、1980, last month, half past six)。
I have been here since 1989.

2) since +一段时间+ ago
I have been here since five months ago.

3) since +从句
Great changes have taken place since you left.
Considerable time has elapsed since we have been here.

4) It is +一段时间+ since从句
It is two years since I became a postgraduate student.

Answer 2

He has played football since 9 am.
He has fall in love with action movies since he was a child.

He does everything, since he is the oldest brother.

自己临时造的几个句子