High Quality Content by WIKIPEDIA articles! In linguistics, a transformational grammar or transformational-generative grammar (TGG) is a generative grammar, especially of a natural language, that has been developed in the Chomskyan tradition of phrase structure grammars (as opposed to dependency grammars). Additionally, transformational grammar is the Chomskyan tradition that gives rise to specific transformational grammars. Much current research in transformational grammar is inspired by Chomsky`s Minimalist Program.