Student or Learner
Are the following sentences correct or do I have to use "so that" instead?
I hurried not to be late.
Leave early not to miss the bus.
Both sentences just sound incomplete to my American ear. You can add "so as" (but not "so that").
I hurried so as not to be late.
Leave early so as not to miss the bus.
Can I use "to not" there?
I hurried to not be late.
Leave early to not miss the bus.
I hurried in order/so as to not be late.
Leave early in order/so as not to miss the bus.
Yes, that way is fine, too. 'That' would usually be omitted in both of those sentences, though.With "so that":
I hurried so that I wouldn't be late.
Leave early so that you don't miss the bus.
Are they OK?
'Not to' is probably considered the "correct" version in most grammar books, but 'to not' is also in use. My personal preference in your original sentences is 'not to'.not to or to not?