I have to be home by ten o'clock.为什么不是be at home?

I have to be home by 10：00pm为什么是be home而不是go home I have to be home by ten o'clock.为什么不是be at home? i have to _____at home ____ten o`clock 1./,by 2.is,by 3.be,by 4,be,after I have to be home by 10 o'clock(对10 o'clock 提问） i have to be home by 10:00 的句型分析,be 在这是什么成分,不是用go I have to be home by 10:00pm.不应有at吗不应在home前加at吗?再说那我在家不是I'm at home. I have to be home by 10 pm.A so do I B so have I 为什么选A不选B I can t——(be) outside late because i have to be back home by 9:00 in the evening have to be home 和 have to get home的区别十点之前必须到家是have to be home by 10 o'clock还是have to get home by 10 o'clock have to be home by 10 o'clock 为什么用by and i have to be in ____ by 10 pm And I have to be in（ ）by 10pm. I HAVE TO GO HOME I HAVE TO GO HOME I will be allowed to have Monday（）to go to home seven,night,get,at,have,I,home,by,o'clock,to 英语连句 seven,night,get,at,have,i,home,by,o'clock,to连词成句 I'm supposed to be at home by ten o'clock at night. I'm supposed him to be at home by ten o'clock at night.什么意思?