To adapt tone, decide who is reading, then choose tu or vous, a matching opening, a matching request and a matching closing. This appears in writing tasks such as an email to a host family, a note to a friend, or a letter to a school.
It rounds off culture and international experiences. It also depends on the careful, fair language practised in describing a visit without stereotypes.
What changes between informal and formal French?
| Informal (friend) | Formal (adult, school) | |
|---|---|---|
| Pronoun | tu | vous |
| Opening | Salut Zoé, ça va ? | Madame la Directrice, |
| Request | On peut se voir dimanche ? | Serait-il possible de …? |
| Thanks | Merci | Je vous remercie de votre réponse. |
| Closing | À bientôt, Bisous | Veuillez agréer, Madame, mes salutations distinguées. |
Verbs, possessives and pronouns must change together. If you choose “vous”, then “votre”, “vos” and the “-ez” verb endings follow.
Worked example
Situation: Amir cannot attend an exchange activity on Saturday. He needs to write to a friend and to the school’s head of languages.
Message 1, to a friend, Zoé:
Salut Zoé, ça va ? Je ne peux pas venir samedi, parce que j’ai un match. On peut se voir dimanche à la place ? Dis-moi si ça te va. À bientôt, Amir
Message 2, to the head of languages, Madame Roussel:
Madame, Je vous écris pour vous informer que je ne pourrai pas participer à l’activité de samedi, car j’ai une compétition sportive. Serait-il possible de me proposer une autre date ? Je vous remercie de votre réponse. Veuillez agréer, Madame, mes salutations distinguées. Amir Hassan
What changed: the pronoun (tu, te to vous, votre), the opening, the verb form (“peux” to “pourrai”, “on peut” to “serait-il possible”), the thanks and the closing. The reason and the request stayed the same.
The mistake to watch for
Mistaken message: Salut Madame, tu peux changer la date ?
The opening is too casual and the “tu” is wrong for a teacher. The sentence is also very blunt, because it has no reason and no polite form.
Correction: Madame, serait-il possible de changer la date ? Je vous remercie. Changing the pronoun and adding a polite structure fixes the tone without making the message long.
Check yourself
1. Rewrite for a head teacher: Tu peux me dire l’heure du rendez-vous ?
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Pourriez-vous me dire l’heure du rendez-vous, s’il vous plaît ? Both the pronoun and the verb form are now polite.
2. Choose a suitable closing for a message to a close friend: (a) Veuillez agréer mes salutations distinguées (b) À bientôt
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(b). Choice (a) is a formal ending for official letters and would feel strange in a message to a friend.
3. Write an opening line to your host mother, whom you have just met. Use the correct pronoun.
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For example: Chère Madame Dupont, je vous remercie de votre accueil. An adult host you have just met calls for “vous”. If the host asks you to use “tu”, follow that.
Where this leads next
When you can switch tone cleanly, try the integrated practice set, then continue to integrating language skills.
Choosing the right register is a judgement call, and a second pair of eyes helps. Our teachers can read your drafts in online one-to-one French tuition.