请专家看此句：
The news reporter hurried to the airport, only to be told the film star had left.
【参考译文】这位新闻记者匆忙赶到机场，结果被告知电明星已经走了。
【我的疑问】后半句不定式的使用方法我看不明白，烦请专家讲解一下，谢谢！
动词不定式可以作结果状语。说明谓语动词表示的动作，达到某种程度而产生的结果；或者可能与谓语动词表示的动作关系不大，而是出人预料的结果，网友的句子only to be told...这个不定式，便是这个种类。
目前分别举比如下：
不定式表示结果，常用在too...to, enough...to, so/such...as to 结构中。如表示出人意料的结果，不定式前常加上only，网友的句子only to be told...这个不定式便是。
It seems that the employee didnt sleep at all to be so sleepy in the early morning.
仿佛这位雇员晚上根本没睡觉，才一大早这么困倦的。
We have got so plenty of food as to treat our guests.
大家有这样充裕的食物，完全可以足够招待大家的客人。
Is that room big enough to seat all of us？
那个房间足够大能容得下大家所有些人吗？
She was too excited to put her thoughts into words.
她太激动了，结果没办法把我们的思绪用言语表达出来。
She hurried to the station only to be told the train had gone.
她匆忙赶到车站，却被告知火车已走了。
