Abstract 1. Introduction 2. The Properties of Korean ECM Constructions 3. Previous Analyses 3.1. Yoon's (1990) Analysis: Accusative Case by Two Channels 3.2. Yoon's (1991) Analysis: Spec of CP as A-position 3.3. Chung's (1993) Analysis: Raising to the Spec of AGRoP 4. Non-Case Based Account for ECM 4.1. [+Focus] Feature Checking 4.2. Elimination of Two Channels 4.3. Spec of CP as A' -Position 4.4. An Argument against AGRoP 4.5. Two Types of Complementizers 5. Conclusion References