冠词是虚词.放在名词之前.用来说明名词指的人或事物.冠词有两种. A(an)叫不定冠词.the叫定冠词.A用在辅音之前.an用在元音之前.1. 不定冠词的用法 (1) a和an均用在单数名词之前.表示某一类人或事物.例如: John is a student. Mary is an English teacher. (2) 指某一类人或事物中的任何一个.例如: A steel worker makes steel. Pass me an apple, please. (3) 指某人或某物.但不具体说明何人或何物.例如: A student wants to see you. A girl is waiting for you outside. (4) 表示“每一 的意思.相当于every.例如: Take the medicine three times a day. They go to see their parents once a week. 【
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