on which 是什么句子?分析一下

题目

on which 是什么句子?分析一下
Even the folk knowledge in social systems on which ordinary life is based in earning, spending, organizing, marrying, taking part in political activities, fighting and so on , is not very dissimilar from the more sophisticated images of the social system derived from the social sciences, even though it is built upon the very imperfect samples of personal experience.
【参考译文】即使社会系统的民间知识中像挣钱,花费,组织,婚嫁,政治活动的参与,以及战斗等等,都与从社会科学中衍生出来更加精细的社会系统描述相差不多,尽管它是建立在一个不太完善的个人经验上的模型.

答案

on which引导的是一个定语从句,用介词+关系代词的形式来引导,介词的选用一般是要根据从句中的动词固定搭配而定,就像这一题从句的动词的固定句型为be based on……,先行词是folk knowledge!