I am stay at home 为什么错误

I am stay at home 为什么错误 i think i am going to stay at home I am only stay at home .这句话表达对吗? I usually stay home at night.stay home 中home前面为什么不用加at? I stay at home on Saturdays 为什么星期六加s I am at home ,am 可不可以去掉,说出为什么? “I stay at home”or“I stay home”哪个正确? I think I am going to (stay at home)对括号内提问 I ______(stay ) at home at last stay at home为什么要加at? It's rainning hard.So I must stay at home.这句话哪里有错误? I had spent the summer stay at home,问下这句有没有错误