Abstract
In this paper, we argue that the combination of an Agree feature and a Tense feature on CP determines the (non-) phasehood of CP. We propose that the presence of both features makes CP a phase while the absence of one or both of the two features makes it a non-phase. It follows from this proposal that finite complements are CP phases while control complements, raising complements, and Accusative with Infinitives are non-phase CPs. It is then predicted that operations can apply across the CP of the latter types. We will show that this prediction is borne out.
