I will compare the Standard Theory with Government and Binding Theory to find similarities and differences in their treatment of reflexivisation and passivisation. The two syntactic theories have been developed by Noam Chomsky, the founding father of generative grammar. A generative grammar is a grammar that contains syntactic, semantic, morphological and phonological rules stating how to form, interpret and pronounce sentences (Radford 1988: 21). The aim of this chapter is manyfold. First, we will present the architectures of the theories, and explain how the two theories generate sentences. Second, we will point out an important difference between the theories. Thirdly, we will give a detailed discussion of the seven subtheories of Government and Binding Theory, the theory that has been developed from the Standard Theory. Finally, we will summarise the discussion in section 4.