I am a Chinese和I am Chinese哪个对?我老师说“I am a Chinese 是错误的句子,除非在后面加boy或girl才对”,但我看的课外书上却有I am a Chinese.

i am proud i am a chinese I am a Chinese还是I am Chinese 是i am a chinese 还是 i am chinese I am Chinese.I am a Chinese.哪个句子正确 I am a Chinese 和 I am Chinese 有什么区别 i am chinese 和 i am a chinese 哪个更常用? I am Chinese!和I am a Chinese!哪个对?意思是什么? i am not chinese i am nativer chinese 为什么不能说I am an English?我们可以说I am a Chinese.和I am English. I am a China girl还是Chinese i am chinese的否定和疑问句 请问各位大侠.I am Chinese 和I'm a Chinese 有什么区别呢? help:should i say :i am a chinese or i am chinese 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 I am not Chinese boy I am not a Chinese 为什么后者要加a那 I am from China.的同义句是I am a Chinese.还是I am Chinese.还是都行