Moi, je préfère le chocolat.
English: Me, I prefer chocolate.
Tonic pronouns (pronoms toniques) in French are special pronouns used to emphasize a person or to clarify who you are talking about. They are different from subject pronouns and have their own forms.
Use pronoms toniques in French to emphasize the subject, after prepositions (like 'avec', 'pour'), after 'c'est' or 'ce sont', and in short answers or comparisons.
Moi, je préfère le chocolat.
English: Me, I prefer chocolate.
Tu viens avec moi ?
English: Are you coming with me?
C'est lui qui a gagné.
English: He is the one who won.
Je parle de toi.
English: I am talking about you.
Eux, ils partent demain.
English: They, they are leaving tomorrow.