What are you doing Tuesday afternoon 这句话为什么Tuesday afternoon 前面不加 on

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What are you doing Tuesday afternoon 这句话为什么Tuesday afternoon 前面不加 on

What are you doing Tuesday afternoon 这句话为什么Tuesday afternoon 前面不加 on
What are you doing Tuesday afternoon 这句话为什么Tuesday afternoon 前面不加 on

What are you doing Tuesday afternoon 这句话为什么Tuesday afternoon 前面不加 on
可以加on,可以不加on.如果具体的某一天早中晚,必须用on,但可以省略,不能用别的介词

省略了吧

what are you doing this afternoon

星期几前面都不用加介词。

貌似是因为Tuesday afternoon所指的是this tuesday afternoon
因为this后面不加on而且this可以省略去,所以写成这个形式