一.You mustn't come home late. You must be home at half past ten.二.Here you are. But you mustn't come home after a quarte

一.You mustn't come home late. You must be home at half past ten.二.Here you are. But you mustn't come home after a quarter part eleven. Do you hear?+++++为什么前面用Be home后面用Come home,这俩如何区分使用?