She left school three years ago and has worked as a nurse ever since.ago能换成before吗?ago是以过去
She left school three years ago and has worked as a nurse ever since.ago能换成before吗?ago是以过去
的时间为标准,而这道题是用现在的时间为标准,符合before
的时间为标准,而这道题是用现在的时间为标准,符合before
英语人气：413 ℃时间：2019-10-08 21:23:24
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She left school three years ago and has worked as a nurse ever since.ago不能换成before.虽然两者都是“以前”的意思,但含义不同.ago表示的是以现在时间为起点的“……时间之前”,通常用在过去时态中；而before...
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