I am home可不可以改成I at home或I‘m at home

I am home可不可以改成I at home或I‘m at home I am at home ,am 可不可以去掉,说出为什么? i am not at home this morning.改成过去式.过去式, I am at home today改成否定和一般疑问句,肯否回答,特殊疑问句 I am at home=I am in吗如图,3 I am not （）at home 请翻译 I am helpful at home I am stay at home 为什么错误 I was at home 意义可不可以相当于：I stayed at home i think i am going to stay at home I am I forget__my homework.It is at home. I am a( )I have left my key at home I am afraid of being alone at home at night I am not feel good改错可不可以改成 I am not so good Am i doing my homework at home?一道连词成句题原题是I doing homework home am at________________________________________? I am at home now (用yesterday替换now) I ( )at home ( ) 是I don't at home 还是I am not at home为什么? I stuyed at home last Sunday 改成一般疑问句