Question

so as to与so...as to的区别,

Answer 1

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 ；

Eg：He ran quickly so as to catch the last bus.

他跑得很快以便赶上那末班车.

so.as to只能表示结果,

否定结构用so.as not to .