He hurried to the party,only（to find）that all the people had already left.为什么要填to find
问题描述：
He hurried to the party,only（to find）that all the people had already left.
为什么要填to find
答
他赶到晚会现场时，发现所有的人早已经离开了。
答
表示一种失望的情感，是固定用法
答
动词不定式做结果状语