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介词at,in,on都可用来表示时间,只是用法不同。现将这三个介词的用法归纳如下:一、at的时间表达法用于表示在三餐或中午、晚上。
Prepositions at, in, and on can all be used to represent time, but are used differently. The usages of the three prepositions are summarized as follows: 1. The time expression of at is used to indicate three meals or noon and evening.