① 下午我2点钟回学校英语
I go back to school at 2 o'clock in the afternoon. 下午我2点钟回学校。
② 在2点我再次去学校 用英语怎么说
At 2 o'clock, I went to school again.
③ 2点半的英文怎么读
at 2:30 或: half past two 注意: in+年或月 on+某一天 at+某一时刻(2:30)