buddy .Im pakistani too.
I want to translate into roman urdu.
1) mjhe swimming atee(pata) hai.(means i know swimming from very long time)
2)mjhe pata hai keh swimming kesay krte hain.(means u r telling some one that u knew how to swim).
sry for language.I think that was the easiest way to make him satisfied...!
It might be not the best explanation but im trying as Im gaining confidence through easy questions when people ask.!