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英语
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we found this problem difficult to solve solve为什么不用被动
人气:473 ℃ 时间:2020-02-01 10:41:32
解答
difficult to do ,习惯用法.不需要被动态.
有点类似中文里说:“我们发现这个问题难以解决”而不必严格地说:“我们发现这个问题难以被解决”.
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