Could you please make a morning call at half past seven?
可否明早七时三十分打电话唤醒我呢？
He starts work at half past seven in the morning.
他在早晨7点半开始工作。
It's half past seven. it's time you went to work.
7点半了。你该去上班了。
Then let's meet there at half past seven.
那么我们7点半在那儿见吧。
We shall come at half past seven, when will you come?
我们七点半来，你什么时间来？