Null Subject in Lubukusu and the Extended Projection Principle

This paper analyses the null subject phenomenon in Lubukusu with special reference to the extended projection principle (EPP). The paper looks at conditions under which null subjects are allowed in this language. Lubukusu data is self-generated and the analysis is based on the principles and parameters approach (P&P) and the Minimalist program (MP). From the analysis of the data generated, it is shown that null subjects in Lubukusu are syntactically active categories. Though covert, they are Arguments that carry semantic content, hence satisfying the EPP requirements. Null subjects occur in this language because of its rich morphology; that is, whenever the subject agreement features are marked on the verb or any of the determiners, then the overt subject can be dropped without any negative implication on the grammaticality of the structure. Being an Argument position, it is theta-marked and as such the unpronounced null subject is pro (a pronoun). This being the case, it is argued that Lubukusu is a consistent null subject language and that in null subject constructions, the EPP is observed.