The verb "avoir" is one of the most used verbs and so one of the most important verb just like "to have" in English.
These are all the present tense forms for "avoir":
J'AI
- I have Tu AS - you have Il/Elle A
- he/she/it has On A - one has Nous AVONS
- we have Vous AVEZ
- you have Ils/Elles ONT
- they have
Examples : J'ai un chat noir. - I have a black cat. Tu as un rhume. - You have a cold. Elle a des cheveux blonds. - She has blond hair. Nous avons des billets de cinéma. - We have cinema tickets. Vous avez une belle voiture! - You have a nice car! Ils ont plusieurs maisons. - They have several houses.