171 This suggests that there must be more than one type of CP projection ‘above’ TP in clauses: more specifically, there must be one type of projection which hosts preposed focused constituents, and another type of projection which hosts complementisers. Reasoning along these lines, Luigi Rizzi (1997, 2001b, 2003) suggests that CP should be split into a number of different projections – an analysis widely referred to as the split CP hypothesis. More specifically, he suggests that complementisers (by virtue of their role in specifying whether a given clause is declarative, interrogative, imperative, or exclamative in force) should be analysed.
