The verb partir poses a recurring problem for learners: its forms in the present indicative do not follow the logic of regular verbs in the second group. The root changes between the singular and the plural, the endings are confusing, and the confusion with verbs like finir or choisir persists for a long time. However, partir belongs to a family of -ir verbs in the third group that all share the same conjugation pattern in the present.
The test that distinguishes partir from -ir verbs in the 2nd group
The first difficulty is not the conjugation itself, but the identification of the group. Many errors arise from confusion between -ir verbs in the second group (finir, choisir, agir) and those in the third group (partir, sortir, dormir).
The recommended procedure in recent learning sequences is based on a simple reflex: test “nous …issons” to distinguish 2nd and 3rd group. If the verb gives “nous finissons,” it is from the second group. If the result sounds wrong (“nous partissons” does not exist), the verb is from the third group.
This mechanical test, presented as a basic automatism in revised programs for primary and early secondary education, allows immediate knowledge of which set of endings to apply. Once the verb is identified as belonging to the third group, one can memorize all the forms of the verb partir in the present based on a unique pattern.
The conjugation pattern in the singular and plural
In the present, partir is conjugated as follows: je pars, tu pars, il part, nous partons, vous partez, ils partent. The root loses its last consonant in the singular (“par-” instead of “part-“), then regains it in the plural.
The endings follow the pattern -s, -s, -t in the singular and -ons, -ez, -ent in the plural. This pattern applies to all -ir verbs in the third group conjugated in the same way.
<img src="https://www.irsk.be/wp-content/uploads/eleve-tableau-conjugaison-partir-present-fr-scaled.webp" alt="Teenager showing the conjugation of the verb partir in the present indicative written in chalk on a classroom board” class=”aligncenter” loading=”lazy” />
Partir as a pivot verb to memorize sortir, dormir, and servir
Learning the forms of partir one by one, in isolation, works in the short term. However, memorization becomes more durable when the verb is studied within a series of verbs that follow exactly the same behavior in the present.
Recently updated training platforms emphasize this point: memorizing partir is more effective in series of verbs with the same behavior (je pars, je sors, je dors, je sers) with real-time error detection, rather than in isolated lists.
How to reconstruct the present of sortir, dormir, or servir from the model of partir
The principle is straightforward. If you know how to conjugate partir, you can reconstruct the conjugation of sortir, dormir, or servir by applying the same operation to the root:
- Partir: root “part-“, singular “par-” → je pars, tu pars, il part, nous partons, vous partez, ils partent
- Sortir: root “sort-“, singular “sor-” → je sors, tu sors, il sort, nous sortons, vous sortez, ils sortent
- Dormir: root “dorm-“, singular “dor-” → je dors, tu dors, il dort, nous dormons, vous dormez, ils dorment
- Servir: root “serv-“, singular “ser-” → je sers, tu sers, il sert, nous servons, vous servez, ils servent
The rule is always the same: the last consonant of the root drops in the singular and reappears in the plural. The “t” of partir, the “t” of sortir, the “m” of dormir, the “v” of servir disappear before the singular endings -s, -s, -t.
Perfectly knowing “je pars / nous partons” provides the key to reconstructing the present of about ten common verbs without having to learn them one by one.
Present endings for -ir verbs in the 3rd group: summary table
| Person | Partir | Sortir | Dormir | Servir |
|---|---|---|---|---|
| je | pars | sors | dors | sers |
| tu | pars | sors | dors | sers |
| il / elle | part | sort | dort | sert |
| nous | partons | sortons | dormons | servons |
| vous | partez | sortez | dormez | servez |
| ils / elles | partent | sortent | dorment | servent |
The table highlights the regularity of the pattern. The endings are identical from one verb to another. Only the root changes.
<img src="https://www.irsk.be/wp-content/uploads/revision-verbe-partir-present-parc-automne-fr-scaled.webp" alt="Woman reviewing the conjugation of the verb partir in the present in a notebook on a park bench in autumn” class=”aligncenter” loading=”lazy” />
The traps that persist despite the regular pattern
The regularity of the model does not eliminate all errors. Two confusions frequently arise.
The first concerns the singular of the third person. The absence of a final “s” (“il part” and not “il parts”) confuses learners accustomed to first group verbs where the third person ends in “e.” In the 3rd group in -ir, the third person singular always ends in -t, never in -s or -e.
The second concerns the transition from singular to plural. Some learners retain the short root in the plural and write “nous parons” instead of “nous partons.” The dropped consonant in the singular must return in the plural. This is the distinguishing marker of this family of verbs.
The reflex “nous …issons” as a permanent safeguard
When faced with an unknown -ir verb, the test remains the same: conjugate in the first person plural. If the result gives “-issons,” the endings of the second group apply (-is, -is, -it, -issons, -issez, -issent). Otherwise, the pattern of partir takes over: -s, -s, -t, -ons, -ez, -ent with the last consonant dropping in the singular.
This double reflex (identifying the group, then applying the pattern) covers the vast majority of -ir verbs encountered daily in French. The conjugation of partir in the present is therefore not an isolated case to memorize by heart, but a key that opens access to an entire verbal family.
