Are you in home?还是are you home?还是are you at home?表示询问你是在家里吗?

Are you in home?还是are you home?还是are you at home?表示询问你是在家里吗? 用are you at home还是are you home?说明原因 Are you at home today? you,at,are,helpful,home,(.) helpful you home are at are you helpful at home Do you fell( ) are you at home( ) 关于stay的词性Are you stay at home 还是Do you stay at homebe 是they at home还是they are at home What are you （ ）at home,ChenJie? Are you helpful at home ? 回答 Are you helpful at home?答语是什么?