ABSTRACT
This chapter concerns wh-questions and more generally with what we have called wh-dependency constructions. The central feature of wh-questions is that they are much more varied than the other examples of sentences involving noncanonical complements and subjects. In wh-questions, the wh-phrase can function as a noncanonical complement or a noncanonical subject of various kinds. The chapter looks at the basic properties of wh-questions and looks at the Principles and Parameters (P&P) approach, highlighting in particular the successive cyclic analysis of complex wh-questions and the assumption that wh-traces are R-expressions. It considers the Phrase Structure Grammar (PSG) approach and introduces the SLASH feature and the NONLOCAL Feature Principle which governs its distribution. The chapter also looks at some other wh-dependency constructions and discussed how they could be handled in both P&P and PSG, as within PSG, sentences have only the ordinary obvious structure.
