I will buy him/her
Je lui achèterai des crevettes.
I'll buy him some shrimp.
I'll buy her a dress.
I’ll buy this desk for him/her.
Je lui achèterai une ceinture.
I’ll buy him a belt.
I’ll buy him a pen.
I’ll buy him/her some perfume.
I’ll buy them a pencil case.
I’ll buy him some cherries.
I’ll buy him/her a pitcher.
I’ll buy him a painting.