To describe sentence structures in any language, a research can choose many methods to analyze structures in the linguistic. The purpose of this research is to apply some ideas of generative grammar to the analysis of sentence structures in Vietnamese. Generative grammar was a true revolution in the linguistics. The theoretical basis is Chomsky's concept of the base of the generative model as developed in his Standard Theory. The concept of the native speaker's linguistic competence is modified for covering the field of style and the cognitive process.