Interrogative adjectives are words used to form a question. They are placed before a noun. Which, what, and whose are interrogative adjectives.
They are commonly used together with a noun to form questions.
Which and what together with a nounare used to get more information about a topic.
Whose is a question word asking for ownership. The examples below answer the question above by expressing ownership in two ways:
Demonstrative Adjectives
Demonstrative adjectives point out people, places, or things.
They must be placed before a noun.
Demonstrative adjectives differentiate between things or people that are near and things or people that are further away.
These adjectives point out nouns that answer the question: which one? or which ones?
Demonstrative adjectives are common in everyday language but do not always point to people or things that are near or far.
That book has a blue cover.
These phones are black.
The home of those students is South America.
I go to this school.
Demonstrative adjectives introduced in this section appear again in the Pronouns chapter.