ABSTRACT
LetusbeginbyconsideringBresnan(1982).Bresnan distinguishestwotypesofcontrol:functionalcontrol
(thatcorrespondsroughlytowhatwecallobligatory control)andanaphoriccontrol(thatcoversbothour argumentandprominencecontrol).Functionalcontrol requires'identityofallgrammaticalfeatures'while
anaphoriccontrolrequiressimply'identityofrefer-
ence'.Functionallycontrolleditems(e.g.VPs)are associatedwith'openfunctions',i.e.functionalstruc-
equations(inthecaseoflexicalinducedcontrol)guaranteesthatthese'gaps'infunctionalstructuresare
properlyfilled.Anaphoricallycontrolledstructuresare
functionalstructuresthatcontainaphoneticallyunreal-
izedpronominalelement('PRO').VariousfactorsconstrainboththeoccurrenceandtheinterpretationofPRO.
