冠词分为不定冠词（a, an），定冠词（the），和零冠词。I. 不定冠词的用法：1指一类人或事，相当于a kind ofA plane is a machine that can fly.2第一次提及某人某物，非特指A boy is waiting for you.3表示“每一”相当于every，oneWe study eight hours a day.4表示“相同”相当于the sameWe are nearly of an age.5用于人名前，表示不认识此人或与某名人有类似性质的人或事A Mr. Smith came to visit you when you were outThat boy is rather a Lei Feng.6用于固定词组中A couple of, a bit, once upon a time, in a hurry, have a walk, many a time7用于quite, rather, many, half, what, such之后Thi
