-cer (c → ç)

Spelling Change: C-cedilla Before a or O

Level 2

In French, the letter c sounds like 'k' before a, o, or u. To keep the soft 's' sound found in the infinitive of verbs like commencer, we change c to ç (c-cedilla) before those specific vowels.

How It Works

French verbs ending in -cer (like commencer, placer, avancer) follow the regular -er verb conjugation rules. However, they require a small spelling adjustment.

The Rule:
The letter c is naturally 'soft' (pronounced like 's') when followed by e, i, or y. But it becomes 'hard' (pronounced like 'k') when followed by a, o, or u. To prevent the verb's sound from changing from an 's' to a 'k', we add a cedilla (ç) whenever the ending starts with a or o.

Where it happens:

  • Present Tense: Only in the nous form (e.g., nous commençons).
  • Imperative: In the nous form (e.g., Commençons !).
  • Imperfect Tense: In the je, tu, il/elle/on, and ils/elles forms (e.g., j'avançais), because these endings start with a.
  • Passé Simple: In all forms except the third-person plural (e.g., il menaça but ils menacèrent).
  • Present Participle: Always (e.g., commençant).

Where it does NOT happen:
Do not use the cedilla before e or i. This means the Past Participle (commencé) and the Present Subjunctive (que nous commencions) never use the cedilla, as their endings begin with those vowels.

Examples (5)

  1. Nous commençons le travail à huit heures.

    We are starting work at eight o'clock.

    Word by Word: We start the work at eight hours.

    In the present tense, only the 'nous' form needs the cedilla because the ending '-ons' starts with 'o'.

  2. Quand j'étais petit, je plaçais mes jouets ici.

    When I was little, I used to place my toys here.

    Word by Word: When I was little, I placed my toys here.

    In the imperfect tense, the 'je' ending is '-ais'. Since it starts with 'a', the 'c' becomes 'ç'.

  3. Il avança vers la porte.

    He advanced toward the door.

    Word by Word: He advanced toward the door.

    In the passé simple, the third-person singular ending is '-a', requiring the cedilla.

  4. En commençant tôt, nous finirons plus vite.

    By starting early, we will finish faster.

    Word by Word: In starting early, we will finish more fast.

    The present participle ending is '-ant', so 'commencer' becomes 'commençant'.

  5. Est-ce que vous placez les chaises ?

    Are you placing the chairs?

    Word by Word: Is it that you place the chairs?

    No cedilla is needed here because the 'vous' ending '-ez' starts with 'e', which naturally softens the 'c'.

Common Mistakes

  • Forgetting the cedilla in the 'nous' form.

    Nous commencons maintenant.
    Nous commençons maintenant.

    Without the cedilla, 'commencons' would be pronounced 'commen-kon', which is incorrect.

  • Adding a cedilla where it isn't needed (before 'e' or 'i').

    Je commençe mon livre.
    Je commence mon livre.

    The letter 'c' is already soft before 'e', so adding a cedilla is a spelling error.

  • Over-applying the rule in the imperfect 'nous' and 'vous' forms.

    Nous commençions.
    Nous commencions.

    In the imperfect, the 'nous' ending is '-ions'. Since it starts with 'i', no cedilla is required.

How It Connects

Tap a pattern to see what it builds on and what it leads to.

-cer (c → ç)Level 2Spelling Change: C-cedilla Before a or O

Learn This First

To understand why -cer verbs require a cedilla, you first need to know how to conjugate regular -er verbs in the present tense. The change specifically occurs when the verb stem 'c' meets the 'o' in the 'nous' ending (-ons) to maintain the soft 's' sound.