题目

i went into the kitchen,i turned on the light ,it was dark.(用on going because造句)
on going into the kitchen,i turned on the light because it was dark.请问,on 在这里启一个什么作用,为什么用on 又为什么went变成going,on going这是一个什么形式的语法,请详解

提问时间：2020-07-18

答案

on译为"在……后立即……","在……时","在……之后"其后跟动名词或名词.例如:
On thinking about the idea, I decided against it.经仔细考虑,我决定反对这个构想.
On arriving there, we all set to work.我们一到那儿,就开始干起来.
On reaching Paris, they called at the wine shop.一到达巴黎,他们立即就到那家酒店去了