一個初中英語的句子結構,請幫分析

題目：

一個初中英語的句子結構,請幫分析
but later ,you realize that without overcoming those difficulties you would never know you strength,willpower or potential
that without overcoming those difficulties 作什麼成份,爲什麼that 後要加介詞短語.

解答：

that引導賓語從句 後面一堆做 realize的賓語 that可以省去不寫 without overcoming those difficulties you would never know you strength,willpower or potential
是從句 主語是you ,without overcoming those difficulties 是方式狀語,可以放在最後的,但是 由於賓語比較長,再接他就不順了,另外 放前面也是強調的作用