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I have read that book before BEFORE可以用在现在完成时肯定句吗
人气:171 ℃ 时间:2019-08-21 21:00:46
解答
在此before是副词.如在句末,谓语通常用现在完成时.如:I haven't seen the film before.
I have seen him before.意思是可用肯定句咯是的。
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