In this dissertation, I investigate the structural positions of "i/ka"-marked DPs and "un/nun"-marked DPs in the light of Kratzer (1988; 1995) and Diesing (1990; 1992). In Korean, unlike German (and English in part), vP-external subjects and vP-internal subjects are not distinguishable at the surface. However, by adopting Kratzer (1988; 1995) and Diesing (1990; 1992), we are able to distinguish between vP-external DPs and vP-internal DPs in Korean. According to Kratzer and Diesing, syntactic position of a DP has affect in the interpretation of the DP itself, as well as the interpretation of the sentence that contains the DP; only DPs interpreted within the vP will be given the existential reading, and only sentences with vP-external elements will be allowed the generic reading. That bare DPs and complex DPs marked by "i/ka"(L) are given the existential reading suggests that "i/ka"(L)-marked DPs are located within the vP. On the other hand, that simplest intransitive sentences with "i/ka"(H)-marked DP subjects are allowed the generic reading suggests that the DPs are interpreted outside of the vP. Applying the same diagnostics to "un/nun"-marked DPs, that sentences with "un/nun"-marked subjects are allowed the generic reading suggests that the DPs are interpreted outside of the vP. The asymmetry in the linear word order confirms that "un/nun"-marked DPs are located above "i/ka"(H)-marked DPs (outside of the vP). [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com/en-US/products/dissertations/individuals.shtml.]