复杂句式中的spend time doing sth结构分析

问题描述

They were forced to spend another uncomfortable night at the airport waiting for their plane.  为了等飞机，他们只得又在机场挨过了难熬的一夜。
请问句中的 waiting for their plane 与动词 spend 有关吗？换句话说，它是属于 spend time doing sth 句式吗？或者说可以在 waiting 前面加上介词 in 吗？我之所以有这些疑问，是因为我感觉这个现在分词短语 waiting for their plane 还有另外一种理解：即将它理解为伴随状语，即伴随动词 spend 而发生的，换句话说，即使在 waiting for their plane 前面加一个逗号，意思也一样。请教专家老师，我的理解对吗？

老师答疑

y老师：

本句所用基本句型为 spend time (in) doing sth。分析如下 ：

They were forced to spend //another uncomfortable night at the airport // (in) waiting for their plane.