Hi!
I am reading Huddleston & Pullum's CGEL, and I've run into a problem. I don't understand how to analyze WH-questions with both subject-auxiliary inversion and . Couldn't somebody help me out?
Let us take the sentence What did the Captain say? as an example. Here the Captain is obviously the subject. But what is the predicate? Is it say ___, with the gap as the object, or what is it?
This is the solution I've come to, but I'm at all sure it is not altogether wrong:
[Clause[Prenucleus:NP_i [Head:N What]] [Nucleus:Clause [Prenucleus:V_j did] [Nucleus:Clause [Subject:NP [Det:D the] [Head:N Captain]] [Predicate:VP [Predicator:GAP_j ___] [CatComp:Clause [Predicate:VP [Predicator:V say] [Object:GAP_i ___]]]]]]]

Looks totally weird to me. Any ideas?
//AC