问题描述： he is the first boy to come into the room today.为什么是to come 1个回答 分类：英语 2014-11-30 问题解答： 我来补答 动词不定时做后置定语,修饰谓语is the first boy, is the first boy是连系动词+名词,系表结构作谓语 展开全文阅读
