Relative Pronouns: who - which

A relative pronoun is a pronoun that introduces a relative clause.
It is called a "relative" pronoun because it "relates" to the word that it modifies. Here is an example:

•The person who phoned me last night is my teacher.
In the above example, "who":

•relates to "person", which it modifies
•introduces the relative clause "who phoned me last night"

Relative pronouns can refer to singular or plural, and there is no difference between male and female.

We use "who" for people and "which" for things and animals.

Exercise 1
Exercise 2