There are three days we can spend 后面应该接to buy gifts还是接buying gifts?此句中如用to buy gifts不可以视作表示目的的状语吗？与There are three days we can use to buy gifts.相比较，语法结构有何不同？
问题描述：
There are three days we can spend 后面应该接to buy gifts还是接buying gifts?
此句中如用to buy gifts不可以视作表示目的的状语吗？
与There are three days we can use to buy gifts.相比较，语法结构有何不同？
答
spend ...(in)doing
There are three days we can use to buy gifts.这里的to buy gifts才是目的状语
但是spend in doing是固定搭配