Questions differ from declarative clauses in that they are introduced by an interrogative pronoun (or WH-element).
(a) We assume that the interrogative pronoun replaces a phrasal constituent (e.g. the DP, PP or AdvP that is asked for) and is moved to the specifier of CP from its base-generated position.
- Anne will buy a new car. What will Anne buy?
(what = DP; base-generated as a complement to V°)
Anne will buy a new car in London. Where will Anne buy a new car?
(where = PP; base-generated as adjunct in VP)
Anne will buy a new car tomorrow. When will Anne buy a new car?
(when = AdvP; base-generated as adjunct in VP)
(b) WH-movement is triggered by the presence of the [+WH] feature in COMP.
Where will Anne buy a new car?
Exercises on Movement / Questions