Breakdown of gasareul oe-ul gyeom baendeuui noraereul dasi deureosseo.
Questions & Answers about gasareul oe-ul gyeom baendeuui noraereul dasi deureosseo.
겸 means something like while also, as well as, or partly for the purpose of.
In 외울 겸, the speaker is saying they listened again:
- to memorize the lyrics
- and at the same time for another reason too
So the nuance is not just a single, strong purpose like I listened again in order to memorize them, but more like:
- I listened again, also with the idea of memorizing the lyrics
- I listened again as a way of memorizing the lyrics too
It often implies combining two purposes/actions together.
Because 겸 attaches to a form based on the verb stem that functions like a modifier/future-like form.
- 외우다 = to memorize
- stem: 외우-
- 외울 = the form used before 겸
So:
- 외울 겸 = with the intention of memorizing / while also using it to memorize
You cannot say 외워 겸 here.
This is similar to how some other expressions use the -(으)ㄹ form before another word.