This article examines stative and passive constructions in Chichewa, finding that the syntax of the two constructions is best accommodated in a model that allows argument structure changing operations, such as stative, to be distinguished from operations, such as passive, that affect the mapping from argument structure to grammatical functions. The Chichewa facts recall observations made concerning the differences between English adjectival and verbal passives, first formalized in Wasow 1977, but provide more straightforward evidence for a distinction, due to the absence of surface homophony. The paper concludes by reconsidering English adjectival and verbal passive constructions, and showing them to be morphologically distinct.