i am an English不对 为什么 还有例外的吗

i am an English不对 为什么 还有例外的吗 I English am an boy 为是么不能说I am an English?那I am a chanese I am a Japanese又对吗?若是I am an American呢? I am ( ).A.an English B.English C.English boy I am ( ).A.an English B.English C.English boy I am an English teacher改为疑问句 English,am,boy,an,I 怎么排列 I’am an English变成复数句 I am not an English.和I am not English.哪个正确? 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 an English teacher改为否定句 I am an English teacher.(for more than 5 years) I am English girl用 a / an / the / 哪一个. I am an English teach对画线部分提问 I am not an English all do not understand I am an English boy?(改成否定句) _____ _____ an English boy. Are you English?Yes ,() A、I am an Englishman B、I'm from English C、I'm an English D、I'm English man为什么啊 I am an english teacher.把english teacher划线怎么提问