onwhich的语法.Courageisaladderonwhichallothervirtuesmount.这句话翻译过来是：勇气是一架梯子,其他美德全靠它爬上去.求onwhich的语法讲解,

Question

on which 的语法.
Courage is a ladder on which all other virtues mount.
这句话翻译过来是：
勇气是一架梯子,其他美德全靠它爬上去.
求on which的语法讲解,

Answer 1

which在这里是引导了一个定语从句,在汉语中就是“……的”的意思,这里的定语从句是which all other virtues mount on.mount是不及物动词,所以后面要有介词,“爬上梯子”的用法是mount on the ladder.
全句可以翻译为：勇气是一架（其他美德靠它爬上去的）梯子.
定语从句中先行词,即被修饰词是物时（这里先行词是梯子）,就用which或that,但是当动词后有固定的介词搭配时,就只能用which.此时的介词可以由动词后挪到which之前.所以此句英文也可写成Courage is a ladder which all other virtues mount on.