A.How long did you spend there?B.We spent two days there.为什么回答不用要用spent 不用spend呢?
问题描述：
A.How long did you spend there?B.We spent two days there.为什么回答不用要用spent 不用spend呢?
答
how long did……?说明是过去式,回答要用对应形式,spend的过去式为spent啦提问的时候spend为什么不用过去试这与how does he go to school？中go为什么不用goes一个道理