I want something to eat,anything will doanything [用于肯定句]随便什么东西, 任何一种东西, 一切 [用于否定]无论什么; 什么也 [用于疑问句、条件句]什么 [与含有疑问、否定意义的词连用]任何事[物], 什么事[物]
肯定用something，否定疑问用anything
anything
