It has been said that when people succeed,这是什么句式?帮忙划分下各个成分

问题描述:

It has been said that when people succeed,这是什么句式?帮忙划分下各个成分
It has been said that when people succeed,it is because of hard work and that luck
has nothing to do with success.
帮忙分析下句子吧

It has been said that(看到这个that 明显就是形式主语,主要表的意思在that后面) when people succeed(when开头这部分是状语,表示一种条件) ,it is because of hard work and that luck has nothing to do wit...