This paper aims to explain the syntactic and semantic properties of “-ge doeda” construction and to suggest its syntactic and event structure are based on the Generative Lexicon Theory proposed by Pustejovsky(1995). Like other auxiliary predicate construction, “-ge doeda” construction also conveys the ambivalence of its syntax. The auxiliary predicate “doeda” can be a predicate of the whole sentence and forms one constituent with “-ge” clause, although it can create different constituents from “-ge” clause with the same VP. Thus, the “-ge doeda” construction takes “-ge” clause as an event argument. This is evidence for Kim’s(2004, 2007) suggestion that the auxiliary predicate construction is an event function. In Korean linguistics and in Korean language education, many previous studies have explained that the “-ge doeda” construction is passive because of its affectedness and the lack of intentionality of its subject. However, passive expressions and causative expressions with similar morphemes and the passive voice are different from the change-of-state verb. According to this evidence, “-ge doeda” construction expresses change-of-state and is an unaccusative predicate construction. The change-of-state of “-ge doeda” construction can be classified as a binary-oppositional change-of-state and the polar-oppositional change-of-state can be classified by the property of the “-ge” clause that is an event argument. This is critical evidence for the principle of compositionality.