同学你好，该知识点来自沪江网校《新概念英语2、3、4册连读【全额奖学金班】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。

同学你好~
so as to表示“以便，为了”，后面一定是目的，比如
One should learn from past mistakes so as to avoid falling into the same old trap again.
要从过去的错误中吸取教训，以免重蹈覆辙。
Let's turn in early, so as to get up early tomorrow to catch the train.
今儿早点睡，明儿好早起赶火车。

所以应该是He left early so as not to see me. 因为“不见我”才是目的，应该放到so as not to 的后面。

祝同学学习进步~