I returned coke bottles for the five cent deposits to buy food with"为啥要加个with啊

问题描述:

I returned coke bottles for the five cent deposits to buy food with"为啥要加个with啊
这个with用于这里的语法形式是什么,需要注意什么情况.

这里的to buy food 是为了解释之前的the five cent deposits.,
其实是to buy food "with" the five cent deposits.
没有了这个with ,句子就是不完整的.可以自己把句子解释下就知道少了什么和需要什么了.