精选优质文档-倾情为你奉上专题二、冠词一.概念: 冠词是一个虚词,它置于名词之前,限定名词的意义.冠词可分为：定冠词,不定冠词和零冠词三类.二.相关知识点精讲不定冠词： 1. a用于辅音发音开头的词前, 如：a book; a “u”,”y”; a usual boy; a one -leg doga useful book; a European country; a university. an用于元音发音开头的词前，如：an apple, an hour; an umbrella, an”r” “h”,”f”,”n”,”m”,”l”,”s”x”; an unusual boy , an unhappy day; an honest child; an engineeran 8/18/80-meet-high building1. a/an 用于单数可数名词前。 a book a boy a man a bird a dog an hour 【练习】 判断正误： a sto
