不定代词 一、不定代词概说 不指名代替任何特定名词或形容词的代词叫做不定代词
常见的不定代词有 all, each, both, either, neither, one, none, little, few, many, much, other, another, some, any, no, (a) few, (a) little, both, enough, every 等，以及由 some, any, no 和 every 构成的合成代词(即somebody, someone, something 等)
二、指两者和三者的不定代词 有些不定代词用于指两者(如 both, either, neither) 有的不定代词用于指三者(如 all, any, none, every) Both of my parents are doctors
我的父母都是医生
All of the students are interested in it
所有的学生对此都很感兴趣
There are trees on any side of the square
广场的每一边都种有树
He has two sons, neither of whom is rich
他有两个儿子，都不富有
He has three sons, none of whom is rich
他有三个儿子，都不富有
【说明】each 可用于两者、三者或三者以上，而 every 只用于三者或三者以上，因此 用于两者时只能用 each，不能用 every
如:不能说 There are trees on every side of the road
三、复合不定代词的用法特点 复合不定代词包括 something, somebody, someone, anything, anybody
