如果你是强制性的意思 你可以说I must come back home before 6:00I must arrive at home before 6:00如果不是强制性 你可以说I need to come back home before
因为所有人都会孤独，在家缺少友情，在校缺少亲情，所以会感觉空虚
I have to be home by 6 p.m.
