I am Chinese.I am a Chinese.哪个句子正确

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 not chinese i am nativer chinese I am a China girl还是Chinese 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 I am a Chinese对Chinese划线提问用什么 I am Chinese.中Chinese前用不用加a? I am a Chinese 和 I am Chinese 有什么区别 I am a Chinese girl.为什么不用:I am an Chinese girl. 要表达我是中国人应该说I am Chinese为什么不说I am a Chinese? i am chinese 和 i am a chinese 哪个更常用?