Relative clauses play a hugely important role in analysing the structure of sentences. This book provides the first evidence that a unified analysis of the different types of relative clauses is possible - a step forward in our understanding. Using careful analyses of a wide range of languages, Cinque argues that the relative clause types can all be derived from a single, double-headed, structure. He also presents evidence that restrictive, maximalizing, ('integrated') non-restrictive, kind-defining, infinitival and participial RCs merge at different heights of the nominal extended...