We have an English class____the afternon of Wednesday.为什么用on

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We have an English class____the afternon of Wednesday.为什么用on
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We have an English class____the afternon of Wednesday.为什么用on
We have an English class____the afternon of Wednesday.为什么用on

We have an English class____the afternon of Wednesday.为什么用on
具体的某一天 用介词on
不明白的再问哟,请及时采纳,多谢!

on
具体某一个早上,下午,晚上用on
如:on a cold moring

因为afternoon 有Wednesday 定语修饰 意思是在星期三的下午 没有定语修饰时:in the morning;in the afternoon;in the evening 但是 它们有定语修饰时必须加 on : on the morning of Sunday; on the afternoon of September 1,2012

具体确定的某一天,句子中有 Wednesday 所以 用介词on
例如:on Monday, on Tuseday; on Wednesday...

in的用法是 in the morning; in the afternoon;...
in 指不确定的某天