The theory is now the basis on which all our ideas of the universe are built.帮我从语法角度分析这句话.不用翻译.which 修饰什么?

The theory is now the basis on which all our ideas of the universe are built.帮我从语法角度分析这句话.不用翻译.which 修饰什么?
The theory is now the basis on which all our ideas of the universe are built.帮我从语法角度分析这句话.不用翻译.which 修饰什么?

The theory is now the basis on which all our ideas of the universe are built.帮我从语法角度分析这句话.不用翻译.which 修饰什么?
关系代词which的用法
在非限定性定语从句中,只宜用which,不宜用that.
Beijing,which is the capital of China,is a very beautiful city.
在限定性定语从句中which和that在指代物的时候常常可以通用,但是有时只宜用which
而不用that
i.关系代词前面有介词的时候
This is the hotel in which you will stay.
ii.如果有两个定语从句,其中的一句的关系词是that,另一句宜用which.
Let me show you the novel that I borrowed from the library which was newly
open to us.
3.关系代词与介词,关系代词的省略
a) 关系代词和介词
介词放在关系代词的前面时,介词短语只能用which代物,和用whom代人
This is the hero of whom we are proud.
I want to find the very pen with which I wrote that letter.
当介词放在句子的末尾时,可用that/which代物,that/whom/who来作为介词的宾语,
且这个做介词宾语的关系代词往往忽略
This is the hero that (who/whom/忽略) we are proud of.

做介词on的宾语，引导宾语从句，仅供参考

on which 因为前面是basis 定语从句
on which all our ideas of the universe are built都是来修饰 basis的

on which 是一个引导词 它修饰前面的the basis

the theory是主语
is是系动词
now是时间副词 basis on 是基于的意思 应该是介词
which引导定语从句 all后面是修饰which的

我觉得the theory is now the basis是主句部分,on which是介词+关系代词的定语从句吧，which 指代basis