 Larson adopts many assumptions from Chomsky (1981) and subsequent work. One is that all NPs have to be assigned Case in the course of a derivation. (Case is an abstract syntactic property, only indirectly related to the morphological case forms displayed by nominative, accusative, and genitive pronouns. Objective Case is assumed to be assigned to any NP in direct object position, e.g., my pass in (T1), and Nominative Case is assigned to an NP in the subject position of a tensed clause, e.g., the guard in (T1).)