Extended Projection Principle

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Extended Projection Principle is principle which extends the Projection Principle with the requirement that clauses have subjects (also see licensing).


the EPP requires that sentence (i) has an expletive subject (to which no theta-role is assigned):

(i) it is raining


Utrecht Lexicon of Linguistics


  • Chomsky, N. 1986a. Knowledge of language: its nature, origin and use, Praeger, New York.
  • Chomsky, N. 1981. Lectures on Government and Binding, Foris, Dordrecht.