大学英语六级语法大全之since的四种用法

2016-03-25 16:31:22来源:网络

  11.13 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.

  汇总:2016年6月大学英语六级语法大全

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本文关键字: 六级语法 英语六级语法

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