Is it “who” or “whom”?

Hello, my dear students

I bet many of you are quite familiar with the word “who”. A relative pronoun and one of those famous words used to make questions (many of them starting with “wh-“, right?), but when it comes to the word “whom” we normally find some problems. When do we use it? How do we use it? Is it formal or informal?

I’m sharing a great link by Oxford Dictionaries talking about the differences between these words.

Over and out.