英语高手们帮我看看这个定语从句谢谢

题目

英语高手们帮我看看这个定语从句谢谢
这是来自高中选修7的课文的一句话（有点长）
Asimov had both an extraordinary imagination that gave him the ability to explore
future words and an amazing mind with which he searched for explanations of everything,in the present and the past.
我不懂这个amazing mind和which之间为什么会有with
因为它前面已经have both了,就是说他有这两样东西,又加个with不就重复了?
我不明白,高手们可以帮我详细点说吗 非常感谢啊!我纠结很久了!

答案

先分析句子结构 把句子主干找出来
Asimov had both an extraordinary imagination and an amazing mind.
然后找枝干
that gave him the ability to explore future words 修饰 extraordinary imagination 的限制定语从句
with which he searched for explanations of everything 修饰 an amazing mind 的限制定语从句
这里的with 是 searched for sth with an amazing mind 中 with 提前 已可以放到后面去的
in the present and the past 修饰 everything