This last Sunday I had a live Korean classroom, and we learned about the verb ending ~까(요).
The 까(요) verb ending can be used with both Action Verbs and Descriptive Verbs, and it can mean several things depending on how it's being used. With many Action Verbs, it can translate as "Shall I?" or "Shall we?" And with Descriptive Verbs it can translate as "Could" or "Would," among other translations.
The full live stream was over an hour long, but you can watch the abridged version right here.