如秋之夢影的回答：

so as to 以便, 以求; 以致

in order to 为了(做某事), 以便(做某事) in order to do sth. 为了(做某事), 以便(做某事)

如秋之夢影的回答：

so as to 以便, 以求; 以致

in order to 为了(做某事), 以便(做某事) in order to do sth. 为了(做某事), 以便(做某事)

裟瑞的回答：

意思一样 前者只能放句中 后者句中句首都可以

?ιυп光爲昼?的回答：

so as to 以便，为的是 例句： He ran quickly so as to catch the last bus. 他跑得很快以便赶上那末班车。 Look for the old so as to learn the new. 温故而知新。 与 in order to区别： 两者都可以引导目的状语从句“为了…”， in order to在句子前面或中间皆可，而so as so不能放在句首，如： In order to pass the exam, he studied even harder. We started early in order to arrive before dark.

追求卓越的回答：

so as to 和in order to 基本是一致的. 但是in order to 只能表示目的,其位置在句首或句中皆可 ,否定句结构用in order not to，比 so as to正式；so as to既可表示目的，又可表示结果，其位置一般在句中，否定结构用so as not to ；so.... as to只能表示结果，否定结构用so.... as not to