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be about to do sth… when和while的差别……
be about to do sth… when和be about to do sth…while差别是什么?请给出明确的解析!
人气:242 ℃ 时间:2020-05-31 22:29:09
解答
be about to do sth...when...固定句型“正准备...这时...” 不能用while
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