What/which they did for others.中文what which在这里起什么作用

这可以是一个名词性从句作主语或宾语（what）,也可以是形容词性的定语从句（which）,前面的先行词（被修饰的名词）应该在定语从句里作宾语。what 或 which 是关系代词,其引导从句的功能（从句引导词）。 再问： Some organizations give awards to people for the things they did for others。再说说 再答： for the things they did for others：这里的定语从句省略了 that 或 which —— for the things [that/which] they did for others由于先行词 the things 在定语从句里作宾语，从句的引导词常可以省略。