冠词是个虚词,在句中不重读,它不能单独使用,它只能用在名词之前,说明所指的人或物。冠词分为两种,即不定冠词a和an,定冠词the。一、不定冠词的用法不定冠词a和an在意义和语法作用上是一样的,但在用法上有区别。1.a用在辅音音素开头的单数名词或其修饰词前面;an用在以元音音素 An article is a dummy word, which is not re-read in a sentence. It cannot be used alone. It can only be used before a noun to describe the person or thing referred to. There are two types of articles, namely the indefinite articles a and an, and the definite article the. First, the use of indefinite articles The indefinite articles a and an are the same in terms of meaning and grammar, but there are differences in usage. 1.a used in front of singular nouns or modifiers of consonant phonemes; an used in vowel phonemes