Ann, in Korean, the case markers determine the parts of sentence of words. So, for example, 'I' and 'me' share the same first person pronoun (Nah in familiar and Jeu in polite form) but have different case markers (Neeun for 'I' and Leeul for 'me'). To make the matter more complicate, you can say Na Neeun or Neh Gah for 'I' (Jeu Neeun or Jeh Gah in polite form). e.g. I am a student = Nah Neeun (Jeu Neeun) Hahg-Seng Eeb-Neeh-Dah. You love me = Neuh Neeun Nah Leeul Sah-Rang-Heh-Yoh. As for 'you', as a subject, Neuh (familiar form) Neun or Neh Gah Dang-shin (polite form) Ee as an object, Neuh (familiar form) Leeul Dang-shin (polite form) Eeul Please, let me know if you have more questions.