.........................................
If you were decent in the language it would say:
.....village.............kill..........you.....your kin.........
If you were a master you would be fluent and it would say:
Thanks for saving our village. I won't kill you now. You and your kin are welcome here.
You get the idea. Also, considering the Empire will probably be crumbling, it is likely that many tribal villages would revolt, and if the locals saw some stranger approaching, presumably to conquer them in the name of the Empire, they might attack. If you could yield and prove you can speak some of their language, they would instead welcome you. Depending on your skill too, it could majorly affect the NPCs disposition towards you. Obviously, being the race which speaks the language would give you a skill boost. But before you go saying that a khajiit would be fluent, its possible that you forgot the language from living outside Elsweyr, or that you weren't even born there. Just food for thought.