___snacks and drink,but they also brought cards for entertainment when they had a picnic in the
问题描述：
___snacks and drink,but they also brought cards for entertainment when they had a picnic in the
forest.为什么答案是 not only did they bring ,not only broght they 不可以吗
答
这是not only,but also句型,不仅…而且…,当后面跟从句的时候,not only后面的谓语要倒装,助动词提前,后面跟动词原形,动词的助动词是do,又考虑到时态是过去时,所以用did they bring,整个句子译为：他们森林野餐不仅带了零食和饮料,也带了牌来玩.