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1、中考英语知识点：不定冠词的区别和用法中考英语知识点：不定冠词的区别和用法1 .不定冠词a和an的用法区别：a用在单词发辅音开首的单词前，an用在单词发元音 开首的单词前。如：a book, a desk, a pen, a doctor, a housean enemy, an accident, an animal, an egg但注意：an hour, a useful tool2 .泛指某人或某事物An old man is sitting on the chair.3 .表示。ne或every,但概念上没有它们那样强烈。当表示one的意思时，一般不用 two, three等相对比。如：
2、Every elephant has a long nose.Take this medicine three times a day.4 .用于某些固定词组中。a few, a bit, a lot of, in a hurry, at a time, all of a sudden, many a, a little, a couple of, as a matter of fact, in a word, have a good time, do sb. a favor, pay a visit to, in a way, have a word with, make a living, take a pride in, take a walk, a great deal of, catch a cold,5 .用在某些抽象名词前，表示“一种，一类，一场，一阵”等She was caught in a heavy rain.It was a wonderful tea.That is a great disappointment.相关推荐:中考英语知识点：冠词的分类