不定代词是不是都是三单?答:不定代词不全是三单。1、不定代词分单复数 (1)单数(包括不可数的)的有 one, the other, another, each, either, neither, oneself, every, everyone, everybody, everything, someone, somebody, something, anyone, anybody, anything, no one, none, nobody, nothing, much, a little, ...