在prep语法笔记里找到的,请参考。
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.作者: alannesta 时间: 2011-5-25 06:43
恩~好的~~谢谢拉~~~作者: IMARCUS 时间: 2011-5-26 20:51
我觉得还有一个平行的问题,最后面, and its advirtising.
doubled its circulations and its advirtising.作者: sylivayjer 时间: 2011-5-30 20:24
这题的since是有点诡异
感觉应该是since then,since it founded, since 1983的省略,可以这么省略么?作者: zhouyeying 时间: 2011-5-31 06:41
同问 这个since用得好奇怪 哪里省略了呢
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