Level A2
Relative Pronouns
She is my friend who sings.
She is my friend who sings. The word who already means my friend.
Forms
She is my friend who sings.— who points back to a personThis is the book which I bought.— which points back to a thingThis is the book that I bought.— that works for people and for thingsThe man who called is my teacher.— the word already names him, so we do not name him again
A common mistake
Wrong: This is the book which I bought it.
Right: This is the book which I bought.
A common mistake is This is the book which I bought it. The word which already means the book, so we say This is the book which I bought.
More examples
I have a friend who lives in Haifa.
A person: I have a friend who lives in Haifa.
The bus which goes there is slow.
A thing: The bus which goes there is slow.