This paper aims to clarify the structure of Korean Afterthought Constructions and the identity of the gap in the construction. The main points can be summarized as follows. First, the syntactic head Ω hosts afterthought element. Second, Ω can occur in CP cycle and some expressions having independent function such as presentation constructions. Third, the gap of the construction is copy, which means that the afterthought construction is a kind of movement phenomena. Finally, the structure in which afterthought elements adjoin to Ω head is immune from the right roof condition which regulates a rightward movement.

• 이정훈(서강대학교)