l am from 后面加Chinese还是China

l am from 后面加Chinese还是China l am from China. i come from china i后面还加am吗 I am from China.的同义句是I am a Chinese.还是I am Chinese.还是都行 the student from China后面加Is?还是are?为什么 the food from china还是chinese Chinese food后面加is还是are l am from China.(变否定句） l am girl from china(改为一般疑问句) 护照上NATIONALITY后面应写CHINA还是CHINESE I am from china The boy comes from china,为什么come后面加s?