Interrogative Phrases and the Syntax-Semantics Interface starts by analyzing the interpretation of interrogative phrases in single and multiple constituent questions, including their interpretation under adverbs of quantification. The results are then put to work in a novel approach to some of the constraints on dependencies between fronted interrogative phrases and the associated gaps: superiority, weak crossover, as well as the so-called weak islands' (the WH-island, the negative island and the Factive Island). It is argued that the possibility of fronting an interrogative phrase...