Questioning or interrogative adjectives
When you ask a question you can use an interrogative adjective such as ‘who’ or ‘what’:
What golf club are you going to use for this shot?
So like any adjective, this one has to add extra information about a noun or a pronoun somewhere in the sentence. In this sentence, it’s telling us extra information about the noun ‘club’, which already has one adjective ‘golf’ describing it. The verb in this sentence is ‘to use’, which is a transitive verb and needs an object to act on. The object of this verb is the noun phrase ‘what golf club’.
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