【题目】为了记下白天发生的一系列重要的事情，我熬夜到十一点半。
在线课程【答案】In order to set down a series of important things, I stayed up late until half past eleven.
【解析】在句中运用动词不定式作目的状语，所以答案是：In order to set down a series of important things, I stayed up late until half past eleven.