精选优质文档-倾情为你奉上冠词【不定冠词】a用于 开头的词前,an用于 开头的词前.Remark:1.单词以元音字母u开头用a.Ex:university, useless, useful, unit, uniform.2.单词以不发音的h开头,而后面的音素是元音因素,就用an.Ex:hour, honest.3.表示人或事物的 Ex:A dictionary is a useful book.4.用于表示数量、时间的名词前,表示“一”的意思.5.泛指某人或某物,但未具体说明何人、何物,Ex:A boy is waiting for me.6.用于某些固定短语中 Ex: a few, a little, a lot of, a number of, just a minute, in a hurry, for a while, for a long time, a cup of, a bottle of, have a rest, have a talk, ha