I know that so uses a comma when it is used as a conjunction as in, "I didn't know what to do, so I gave it to him." But what if it is used to mean "so that." For instance: "I gave it to him so he would stop pestering me." Does that so take a comma?
NOT A TEACHER
I was taught that it's helpful to use a comma if so that introduces
a clause of result.
(1) He ran so that he might catch the train. No comma should
be used because so that introduces a clause of purpose (gives the
reason for his running).
(2) He ran, so that he caught the train. So that introduces a clause of
result. That is, it tells what happened as a result of his running. The
comma is necessary because it indicates the pause that is necessary in
THANK YOU & HAVE A NICE DAY.
Notes: (1) Your native language is English, so you already know that
many of us native speakers drop the "that" in sentences such as
No. l and No. 2.
(2) I wish to credit those two example sentences to A Grammar of
Present-Day English by Professors Pence and Emery.
Why can't we say...
He ran, because of that he caught the train instead of He ran, so that he caught the train.
He ran, so that he caught the train - Sounds different not common.
Am I correct?
Now both the sentences sound better.