一般用于可数名词前的限定词有a,an, the, each, every, either, neither, what a /an, many a / an, 基数词,序数词,形容词性物主代词,this, these, that, those, both, last, next, another, certain few, a few, any, no, all, haif, double, twice, additional, past, other, such 等,其中有的既可以作限定词,也可以作形容词。限定词的用法比较复杂,最好查阅语法书。