This study investigated patterns of lexical overuse and underuse in English writing by Korean college students. Using the International Corpus Network of Asian Learners of English, it compared argumentative essays written by Korean learners with those produced by other EFL learners, ESL learners, and native speakers of English. Keyword analysis and part-of-speech tagging were employed to identify lexical features that distinguished the Korean learner corpus. Among the significant keywords, open-class words predominated in both the overuse and underuse lists but were more prevalent in the former, whereas closed-class words, such as determiners and pronouns, accounted for a larger proportion of the underuse list than of the overuse list. Korean learners relied on a narrow set of topic-related words and exhibited a relatively limited range of lexical constructions. They also showed imbalances between frequently used general expressions and less frequently used context-specific alternatives. Based on these findings, the study offers pedagogical implications for enhancing Korean learners’ lexical usage in English writing.

1. 서론
2. 선행 연구
    2.1. L2 영어 쓰기의 어휘 수준
    2.2. 코퍼스 기반 한국인 영어 학습자의 어휘 분석
3. 연구 방법
    3.1. 연구 대상
    3.2. 연구 도구
    3.3. 연구 절차
4. 연구 결과
    4.1. 과다 및 과소 사용 품사
    4.2. 주요 과다 사용 어휘
    4.3. 주요 과소 사용 어휘
5. 논의 및 결론
REFERENCES

• 성민창(Associate Professor, Department of English Education, Gyeongin National University of Education; 62 Gyesan-ro, Gyeyang-gu, Incheon 21044, Korea) | Min-Chang Sung