27.— How often does the train run to Jinan?— twenty minutes.A.Any B.Each C.Every D.Some 这道题为什么算every 不选each 他们到时“每”的意思.百度上那个强调个人的和全体有点听不懂

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27.— How often does the train run to Jinan?—
twenty minutes.A.Any B.Each C.Every D.Some
这道题为什么算every 不选each 他们到时“每”的意思.百度上那个强调个人的和全体有点听不懂

这个是习惯说法.every 用在一段时间之前,表示“每隔多久”的意思.用来表示事物的频率,回答how often.
句意：开往济南的火车多久一趟?每隔二十分钟一趟.

C
固定用法 ‘ 每隔二十分钟
加油！不明白再问！如果帮到你，请采纳，谢谢！

every 用在一段时间之前，表示“每隔多久”的意思。用来表示事物的频率，how often对频率，频度的副词提问

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