- He buys bread.
When the word bread is replaced with a wh-word in order to form a question, wh-movement occurs:
- What does he buy?
Most English interrogative words start with wh-, for example, who, whom, whose, what, which, when, where, why, etc. (though how is an exception).
- (syntax) a syntactic phenomenon found in many languages around the world, in which interrogative words (sometimes called wh-words) or phrases show a special word order. Unlike ordinary phrases, such wh-words appear at the beginning of an interrogative clause.
special order in interrogative sentences