It was worth to them to spend hours deep inside a cave.inside a cave 介词短语做修饰,deep和他啥关系

题目

It was worth to them to spend hours deep inside a cave.inside a cave 介词短语做修饰,deep和他啥关系
谁能帮忙分析这里下语法结构~

答案

inside a cave 介词短语做地点状语,deep在此是副词,用来修饰inside a cave.deep inside a cave深处于山洞中.It was worth to them to spend hours deep inside a cave.这个句子中worth最好换成worthwhile,to them改...