2. a clause is a part of a sentence. A relative clause tells us which person or thing (or what kind of person or thing) the speaker means
3. When we are talking about things, we use that or which (not who) in a relative clause.
4. example: that There's something that you should know . It was the best film that I've ever seen. I'm sorry, but that is all that I saw.
5. We use who in a relative clause when we are talking about people (not things). We use who instead of He/She/They
6. example: The girl who is playing football is Mary. I told you about the woman who lives next door. An atheist is a man who has no invisible means of support
7. When we are talking about things, we use that or which (not who) in a relative clause
8. example: which He couldn’t read which surprised me . Do you see the cat which is lying on the roof? I work in a big company which has many employees.
