I am not Chinese boy I am not a Chinese 为什么后者要加a那

I am not Chinese boy I am not a Chinese 为什么后者要加a那 i am not chinese I am Chinese boy.chinese为什么不能用china代替 i am a man.not a boy 把 am,boy,i,not,a 连字成句 I am a chinese boy.这个 chinese boy前面要加a吗? I am a chinese boy .(变复数） I am 12 years old boy of chinese.什么意思 I am a boy,am not I? am not是不是应该是are not It does not matter, I am not a handsome boy 反意疑问句：I am a chinese,________?I am not a chinese,_____?怎么填 反意疑问句：I am a chinese,________?I am not a chinese,_____?怎么填 can you speak english I am not chinese i am not good at ----(write) in chinese. I am not a boy,-------?的反义疑问句是什么? i am not a decadent boy,they are!语法错误么? i think chinese is very difficult.i am afraid i am not a______to learm it well. i think chinese is very difficult.i am afraid i am not a______to learm it well.