Editing Transformational grammar (section)

{{Short description|Earliest model of generative grammar}}
In [[linguistics]], '''transformational grammar''' ('''TG''') or '''transformational-generative grammar''' ('''TGG''') was the earliest [[scientific modelling|model]] of [[grammar]] proposed within the research tradition of [[generative grammar]].<ref name ="WasowHandbooklede">{{cite encyclopedia |title=Generative Grammar |encyclopedia=The Handbook of Linguistics|year=2003|last=Wasow|first=Thomas|author-link=Tom Wasow|editor-last1=Aronoff|editor-first1=Mark|editor-last2=Ress-Miller|editor-first2=Janie|publisher= Blackwell|url=https://www.blackwellpublishing.com/content/BPL_Images/Content_store/WWW_Content/9780631204978/12.pdf|doi=10.1002/9780470756409.ch12|quote=Early generative work was known as "transformational grammar"}}</ref> Like current generative theories, it treated grammar as a system of [[formation rule|formal rules]] that generate all and only [[grammaticality|grammatical]] sentences of a given language. What was distinctive about transformational grammar was that it posited '''transformation rules''' that mapped a sentence's [[deep structure]] to its pronounced form. For example, in many variants of transformational grammar, the [[English language|English]] [[active voice|active]] voice sentence "Emma saw Daisy" and its [[passive voice|passive]] counterpart "Daisy was seen by Emma" share a common deep structure generated by [[phrase structure rules]], differing only in that the latter's structure is modified by a passivization transformation rule.