Relative pronouns introduce a group of words or a part of a sentence that describes or tells about a person or a thing.
The relative pronouns are:
Use who for the name/s of person/s used as the subject in a sentence.
Example:
The woman who came is my thoughtful mother.
Use whom for the name/s of person/s used as the object of a verb or a preposition in a sentence.
Example:
They were my relatives whom the host recognized.
Use whose for the name/s of person/s or thing/s to show ownership in a sentence.
Example:
This is my sister whose book is missing.
Use which for animals or things.
Example:
The dog, which is a crowd favorite, was trained by a Filipino.
Use that for persons, animals, or things.
Example:
My father gave me the gift that I had been wishing for.