I have an english book.中间的a改为an意思有什么不同

I have an English class_____a week. I want have an English name速度 I want to have an English name. I have an English-chinese____(字典）. I have ( )friend. A.English B.an English C.a English D.an England I have an English dictionary.对an English dictionary提问.—— ——you have? I have an English dictionary(一般疑问句)()()have an English dictionary. i have an english book对划线的部分提问【an english book画线】 I have an English book.改为否定句 I ____(have) an English party next week. I have _______ English book.a an the （）“I have bought an English-Chinese dictionary.”原因 I have english class()an hour every day速求! I ( )an English class yesterday填had、have、has哪一个? 求翻译：I have an English name called Whity. I have an English lesson in the m__. I,never ,an,have,English,speaking ,visted,country I have a English book.为什么不可以在I have后加an?