Since I began to work here three years ago,this factory___in size. A.had doubled B.has doubled为什么B解释下谢谢
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Since I began to work here three years ago,this factory___in size. A.had doubled B.has doubled
为什么B解释下谢谢
B since 加过去时,主句要用现在完成时,如:
It has been 5 years since I came here.
B.has doubled 从过去某个时候到现在,用现在完成时
现在完成时态,看到since就知道了,从三年前我开始在这儿工作现在这个工厂……
Since表示从我3年前到现在,表示这个是包含现在的
A 的选择意思是过去某段时间增长
B 表示包含现在这一刻
B.has doubled 从过去某个时候到现在,用现在完成时
你好,这个句子的意思是说:
自从我三年前开始在这里工作以来,这个工厂的面积翻了一番.
Since表示从3年前到现在,表示的时间是现在的时间.
只要是SINCE引导的句子都要用现在完成时态.
A是一个过去完成时态,表示的动作是过去之前 就已经发生了的.所以不能选....
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你好,这个句子的意思是说:
自从我三年前开始在这里工作以来,这个工厂的面积翻了一番.
Since表示从3年前到现在,表示的时间是现在的时间.
只要是SINCE引导的句子都要用现在完成时态.
A是一个过去完成时态,表示的动作是过去之前 就已经发生了的.所以不能选.
收起
应该选B:has doubled
Since 表示某情况自过去某时间点或某个事件以来一直持续到现在.
比如:I've been here since the end of June. 自6月末以来我就一直呆在这儿。
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Since I began to work here three years ago,this factory___in size. A.had doubled B.has doubled为什么B解释下谢谢