Published online by Cambridge University Press: 28 November 2008
One of the most important types of grammatical process in the languages of the world is that involving the intransitivization of a transitive verb and the deletion or demotion of its subject or direct object. The first such process to be analysed was passivization, involving the demotion of a transitive subject to an oblique role or its deletion altogether; this process is central to all linguistic theories and has been known as long as linguistics has been studied.