What is the different between 'sori' and 'mae'n ddrwg gen i' ?
Sori is a loanword from English whereas "mae'n ddrwg gen i?" is the proper welsh word.
Well I understand that, but what I mean is, is either one used for a specific thing? Which one is more common to say/hear?
I guess you might use the more traditional form in more formal situations, but really you'll hear both pretty often so just use whichever you feel better with.
Does this course at any point actually teach mae'n ddrwg gen i?