He is American和she is English 我在牛津英语上看到的,不宁白为什么不加a?

She is American,and he is English .改为复数句子 He is American.I am English.为什么不能加冠词He is American.I am English.和He is an American.I am a Englishman.的中文是不是没有区别呢 She is an American. She is an American. He is American和she is English 我在牛津英语上看到的,不宁白为什么不加a? He is()American She is an American .这里加不加冠词?American 大写否?I am (a) Chinese 加不加a 来翻译短文!抢30分!AN AMERICAN BOY IN CHINAI am David. I'm an American boy .Rock is my good friend .He is English.He is fourteen.We are the same age.We are in the same class.I have a sister.Her name is Lucy.She is ten. She and I are in the same He is American.对American划线提问 she is an American.还是she is American She is an American ,__________? she is an American,and he is Einglish.（变成复数） he is an american=he is ( ) ( ) He is American什么意思 I am you are,she he is she is my 和 he is my is he she it和does he she it区别 He is American.(划线提问American) _______ is his _________?