Student or Learner
what is demonstrative adjective, interrogative adjective and indefinite adjectives
The demonstrative adjectives "this," "these," "that," and "those” are identical to the demonstrative pronouns, but are used as adjectives to modify nouns or noun phrases.
This machine needs to be repaired.
I like that story.
An interrogative adjective ("which" or "what") is like an interrogative pronoun, except that it modifies a noun or noun phrase rather than standing on its own.
Which book do you prefer?
What time is it?
An indefinite adjective is similar to an indefinite pronoun, except that it modifies a noun, pronoun, or noun phrase.
Many people like that story.
I don't have any idea about that.