一个初中英语的句子结构,请帮分析

题目

一个初中英语的句子结构,请帮分析
but later ,you realize that without overcoming those difficulties you would never know you strength,willpower or potential
that without overcoming those difficulties 作什么成份,为什么that 后要加介词短语.

答案

that引导宾语从句 后面一堆做 realize的宾语 that可以省去不写 without overcoming those difficulties you would never know you strength,willpower or potential
是从句 主语是you ,without overcoming those difficulties 是方式状语,可以放在最后的,但是 由于宾语比较长,再接他就不顺了,另外 放前面也是强调的作用