Since引导的从句一般要用什么时态.?要全还有例句喔..谢了..

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Since引导的从句一般要用什么时态.?要全还有例句喔..谢了..Since引导的从句一般要用什么时态.?要全还有例句喔..谢了..Since引导的从句一般要用什么时态.?要全还有例句喔..谢了..一

Since引导的从句一般要用什么时态.?要全还有例句喔..谢了..
Since引导的从句一般要用什么时态.?
要全还有例句喔..
谢了..

Since引导的从句一般要用什么时态.?要全还有例句喔..谢了..
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.

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