‘-jeok’ and its features. Survey results among native Russian speaking Korean language learners showed low recognition level of this grammar pattern usage and certain difficulties in its practical application. The results also detected that as a rule this affix is not taught in class separately. In connection to this, few text books on Korean language that are widely used in Korea and overseas as well have been viewed. Hereafter, the specific features of ‘-jeok’ affix are observed from word-formative point of view, morphological affiliation to any given part of speech, as well as its functioning in the sentence. The result of this study served as a base step for teaching plan design for native Russian speaking Korean language learners by non-native Korean speaking teacher. (Yonsei University)