① 下午我2點鍾回學校英語
I go back to school at 2 o'clock in the afternoon. 下午我2點鍾回學校。
② 在2點我再次去學校 用英語怎麼說
At 2 o'clock, I went to school again.
③ 2點半的英文怎麼讀
at 2:30 或: half past two 注意: in+年或月 on+某一天 at+某一時刻(2:30)