- We use «be» to describe something or someone.
Subject + to be + complement (adjective)
Example: He is tall.
Mike is intelligent.
Ann and Mary are pretty.
The house is big.
- We use «be» to say that someone or something is in a specific place.
Subject + to be + complement (place)
Example: He is in the house.
Mike is at the airport.
Ann and Mary are in the building.
The house is in Montreal.
- We use «have» to express possession.
Subject + have/has+ complement (noun)
Subject + have/ has + complement (adjective + noun)
Example: He has a new car.
Mike has a pretty girlfriend.
Ann and Mary have homework.
The house has a big garden.