A consideration of academic meaning & function with substitutional expression /나/. Korean Semantics, 40. The purpose of this research is academically looking out the substitutional expression /나/ which is regarded as nothing useful in academic essay these days in Korea. As I am a researchers, I propose that if we can and may use the /나/ in an academic essay, it makes the essay more than better. For this opinion is attained this thesis handled academic essays in Korean before 1970's and nowadays. And finally I demonstrated that using /나/ in academic essay makes next two supposition in this thesis.
1. Using /나/ in academic essay makes one's contention certainly.
2. Using /나/ in academic essay will offer citation sentence and researcher's opinion distinguished.