"I'm an English matter"什么意思?这句话什么意思?

__________an English girl?Yes,I'm an English girl. I'm an English teacher?(同义句) I'm an English teacher?(同义句) 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‘m reading an English book（对reading an English book提问） I'm an English为什么不能这样说?书上说I'm English或I'm an English boy都可以,但是不可说I'm an English,这是为什么啊,不是有I'm Chinese么. i’m an english boy//求这句英语连读音标 I'm glad to see you're an English fan matt matt matt matt Just What I m Looking For的歌词Matt White的 I'm an American and I'm an English teacher in beijing.I've () here for more 这个阅读理解 Kate is ( ) English.I'm( ) American A.a,an B./,/ C.an,a选哪个? I'm(A) an English(B).He is an American(C).错误的为 I M haveing an english lesson 在这一句里AN的意思是 I'm going to buy an English book tomorrow.（对划线部分提问buy an English book ） I'm an english是错的吗?English指英国的,英国人,为什么不能加an?