"On" vs. "Nous": Navigating Register and Formality in TEF/TCF Speaking

Introduction: The Pronoun Puzzle

In the Expression Orale subtest of the TEF (Test d'Évaluation de Français) and TCF (Test de Connaissance du Français), one of the most common dilemmas for B2/C1 candidates is choosing between On and Nous.

Both mean "We," but they represent completely different Registers (Registres de langue). If you use in a casual roleplay with a friend, you sound overly formal (and slightly robotic). If you use in a highly academic presentation for Task 3, you risk sounding too colloquial for the "Expert" descriptor.