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小升初必备语法:since的四种用法

11-01 11:52:03 | 浏览次数: 83318 次 | 栏目:小学英语语法
标签:小学英语语法,http://www.manfen6.com 小升初必备语法:since的四种用法,

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.

TAG: 小升初