Could you please make a morning call at half past seven?
可否明早七時三十分打電話喚醒我呢？
He starts work at half past seven in the morning.
他在早晨7點半開始工作。
It's half past seven. it's time you went to work.
7點半了。你該去上班了。
Then let's meet there at half past seven.
那么我們7點半在那兒見吧。
We shall come at half past seven, when will you come?
我們七點半來，你什么時間來？