i ran all the way in order to catch the last bus.

I ran all the way so as not to miss the last bus.

其中in order to和so as to的用法和意思相同。
既然下一句中用了否定的not，那么catch也需要改成与其相反意思的词miss。
这样才可以保证原句的意思没有改变。

i ran all the way so as not to miss the bus
in order to do sth =so as to do sth

I ran all the way so_as_____not to_miss_____the last bus.

as miss

kbg grfr