You have a lot of books!

you Pronoun

— Used instead of the name of the person being spoken to; it is a second-person pronoun. You are my best friend. Can I go to the shops with you? — Used to talk about anyone. You have to be 18 years old to see that film. She has problems with her eyes, and can't see you properly.

you Determinative

— Used before a word that means the person or people someone is talking to. You guys can leave now.

have Verb

— Someone has something if the thing is in their hands. The person is holding or gripping it. Do you have a spoon, or do you need me to give you one so you can eat the soup? — If you have uto/u do something, you must do it. I have to go. I had to do it. — Someone has something if the thing is that person's thing: the person owns it; it belongs to the person. The rich family has a big house. — If you have you hold something in the mind. I have a doubt about him. — If you have you join something. We have lunch at 13:00. — You use have to say that you suffer from something or to tell the experience. I have a defective vision. (I don't see well.) He had a wonderful time with his friends.

a Determinative

— A is used when the following word could be any of a certain type. Compare "A book I saw on the shelf" and "The book I gave you yesterday".

a Noun

— A is the first letter of the alphabet. The letter "a" comes before "b". — In some schools, an A is a very high grade. Ron got an A on his earth science test.

lot Noun

— A lot of something is a large amount of it. I have a lot of things to say. He caused lots of trouble. — To a large degree Running is lots more fun when the weather is cool. — Often He used to come here a lot, but he doesn't anymore. — A lot is a piece of land, usually small. They are constructing a building on this lot.

of Preposition

— Made using. It is a house of cards.

books noun

— (accounting) Accounting records.