And this is my room.

and Conjunction

— You use and to talk about two things at once. I like singing and reading. Mary and Jane went on a holiday together. — You use and when you are listing a few things and you are now on your last item of the list. I like singing, reading, cycling and playing soccer. I used to like this girl from my class as she is pretty, gentle and caring. — And is used when you are putting two sentences together. She came into the store, shouted at the cashier, and left. — Used to show what happened after something else. The alarm went off and I woke up. — And is used to join certain numbers together. Two hundred and thirty-five people went missing after the earthquake.

this Determiner

— You use this to show which thing or idea you are talking about. You use it when the thing or idea is close to you. This trip was a great idea. Which book is yours, this one or that one? — The known thing. This man went to the door.

this Demonstrative Determiner

— The thing indicated. This is my hand.

is Verb

— A form of the verb be when talking about someone or something else. He is late for class. Is it hot in here?

my Pronoun

— My things are things that belong to me. Is this my book, or is it yours?

room Noun

— A room is a place which is part of a building. Someone is able to see other people who are in the same room. We need a long, wide room because many people will be at the meeting. — Room can mean some space; a place with nothing, only air. I need room to be able to move my arms and not touch people.

room Verb

— To live in or share a room. I roomed with Ryan all four years of college.