Have/have got is a verb used to express states like possession, relationship, illnesses and the characteristics of people and things:
- When expressed in its affirmative form, the verb confirms something about the subject;
- When expressed in its negative form, the verb denies something about the subject;
- When expressed in its interrogative form, it is used to ask questions about the possession of something.
We use the verb to have to form common expressions in informal communication.