The word ‘who’ can be used as a relative pronoun which links a dependent clause to an independent clause.
It is typically used at the beginning of an interrogative sentence and can also be followed by other words such as modifiers.
1. 'Who is the new hire?'
2. 'Who are you going to the movie with?'
3. 'Who is your favorite actor?'
When used as an interrogative pronoun, make sure you begin the sentence with ‘who’ and end the sentence with a question mark. Also, remember to use the appropriate form of ‘who’ depending on the number of people you are referring to.
The word ‘who’ can also be used as an interrogative pronoun which is used to ask questions.