Mastering boire conjugation is a rite of passage for anyone learning French. This irregular third-group verb means to drink, and you'll find it everywhere from casual café orders to complex literary passages. Because it shifts stems across different tenses, memorizing its patterns takes a bit of deliberate practice.
If you want to use boire conjugation correctly in real conversations, you need to look beyond simple present-tense drills. This guide breaks down every major mood and tense, highlights common traps learners fall into, and gives you practical examples you can start using right away.
Present Tense (Présent de l'Indicatif)
The present tense of boire conjugation is notoriously irregular. The stem changes multiple times depending on whether you're speaking in the singular or plural.
- je bois (I drink)
- tu bois (you drink)
- il/elle/on boit (he/she/one drinks)
- nous buvons (we drink)
- vous buvez (you drink)
- ils/elles boivent (they drink)
Notice the distinct shifts. In the singular forms (je, tu, il), the stem sounds like boi-. In the first and second person plural (nous, vous), the stem shifts completely to buv-. Finally, the third-person plural (ils/elles) uses boiv- with a silent -ent ending.
For quick practice, check out the conjugation tables and grammar breakdowns on Lawless French to see how irregular verbs pattern alongside standard models.
Past Tenses: Passé Composé and Imparfait
Talking about the past requires knowing when to use completed actions versus ongoing habits.
Passé Composé (Completed Actions)
To talk about a specific instance of drinking, use the auxiliary verb avoir paired with the past participle bu.
- J'ai bu un café ce matin. (I drank a coffee this morning.)
- Nous avons bu toute l'eau. (We drank all the water.)
Imparfait (Ongoing or Habitual Past)
When describing what you used to drink regularly, or what you were drinking when something else happened, switch to the imparfait. This tense builds cleanly on the plural present stem buv-.
- Quand j'étais jeune, je buvais du lait. (When I was young, I used to drink milk.)
- Tu buvais ton thé quand le téléphone a sonné. (You were drinking your tea when the phone rang.)
Future and Conditional Tenses
Looking ahead requires a completely different stem. For both the simple future and the conditional, boire conjugation uses the stem boir-.
- Futur Simple: je boirai (I will drink), tu boiras (you will drink), il boira (he will drink), nous boirons (we will drink), vous boirez (you will drink), ils boiront (they will drink).
- Conditionnel Présent: je boirais (I would drink), tu boirais (you would drink), il boirait (he would drink), nous boirions (we would drink), vous boiriez (you would drink), ils boiraient (they would drink).
Use the conditional form when ordering politely in a restaurant setting: Je boirais volontiers un verre d'eau. (I would gladly drink a glass of water.)
Subjunctive Mood (Le Subjonctif Présent)
You'll need the subjunctive whenever you express necessity, doubt, or desire involving someone else drinking. The present subjunctive borrows stems from both the present singular and plural patterns.
- Il faut que je boive. (I must drink.)
- Il est important que tu boives assez d'eau. (It's important that you drink enough water.)
- Il veut que nous buvions du jus. (He wants us to drink juice.)
- Je doute qu'ils boivent cela. (I doubt they are drinking that.)
For additional practice with mood shifts and subjunctive triggers, consult the resources at French Linguistics for structured exercises.
Common Mistakes to Avoid
- Mixing up the stems: Learners often try to say nous boispons or vous bouvez. Stick to nous buvons and vous buvez.
- Forgetting the silent letters: Remember that the final s in je bois and tu bois is silent, as is the t in il boit.
- Misapplying past participle agreement: The past participle bu never changes based on gender or number when used with avoir.
Frequently Asked Questions
What is the past participle of boire?
The past participle is bu. It combines with avoir to form compound past tenses like the passé composé and plus-que-parfait.
Is boire a regular or irregular verb?
It is strictly irregular. It belongs to the third group of French verbs and does not follow the standard conjugation rules of -er, -ir, or -re verbs.
How do I use boire in a polite request?
Use the conditional tense (je boirais) or the imperative mood (buvez for formal or plural requests, bois for informal ones).
Does boire take être or avoir in compound tenses?
It always takes avoir as its auxiliary verb in compound tenses like the passé composé.
