Question

请问是in Friday afternoon还是on Friday afternoon?

Answer 1

on Friday afternoon 在星期五下午

We drove there on Friday afternoon.
星期五下午，我们驱车到了那里。

She is only free on Friday afternoon.
她只有星期五下午有空。

Mary had two lessons on Friday afternoon.
星期五下午玛丽上两节课。

Answer 2

应该是in the afternoon, 因为美国人会说in the morning, in the afternoon, at the evening.

in this Friday afternoon

or one of the Friday afternoons

Answer 3

on Friday afternoon. 具体到某天某时刻用介词on