what wouldn't he give now for a message from Hogwarts?这句话用了什么语法?

问题描述:

what wouldn't he give now for a message from Hogwarts?这句话用了什么语法?
详细分析一下这个句子中的用法

首先give A for B的意思是用A换B上面这句话的陈述句是:He wouldn't give 【sth.】now for a message from Hogwarts.意思是:他现在不会用【东西】去换霍格沃茨的消息.那么对sth.提问,变成疑问句:what wouldn't he ...