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英语
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jim has been studying since he come home 为什么用since
人气:344 ℃ 时间:2020-03-28 14:16:45
解答
这是因为这句话前面有标志词【has been】,是现在完成时态的标志,因此后面用【since】+时间,表示动作一直在进行到现在
翻译:吉姆自从他回家后就一直在学习.
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