[+produit, service, marchandise] to buy
J'ai acheté des gâteaux à la pâtisserie. I bought some cakes at the cake shop.
acheter qch à qn [+marchand] to buy sth from sb
[+enfant, ami] to buy sth for
J'ai acheté des œufs au fermier. I bought some eggs from the farmer.
Qu'est-ce que tu lui as acheté pour son anniversaire? What did you buy him for his birthday?
acheter à crédit to buy on credit