7:30的英文怎么写

　　例句：

　　Let's meet at half past seven.

　　让我们七点半见面吧！

　　Let's set at half past seven.

　　让我们定在七点半吧。

　　I eat breakfast at half past seven.

　　我七点半吃早餐。

　　It is seven thirty. She must have come home.

　　已经七点半了，他一定到家了。

　　The kids had breakfast at seven thirty this morning.

　　孩子们今天早晨七点半吃的早饭。

　　Seven thirty. Would you please set us in a private room?

　　七点半。能给我们安排雅间吗？