grammar
Devoir and Pouvoir: Navigating obligation and ability.
To navigate daily life in a French-speaking environment, you need to know how to express obligations (what you must do) and abilities or permissions (what you can do). The irregular verbs devoir and pouvoir are essential tools for these situations.
Devoir (To have to / Must)
Use devoir when expressing a necessity or an obligation. Because it is highly irregular, its conjugation pattern needs to be memorized.
| Singulier | Pluriel |
|---|---|
| je dois | nous devons |
| tu dois | vous devez |
| il/elle/on doit | ils/elles doivent |
« Où est-ce que je dois aller ? » (Where must I go?)
« Qu'est-ce que je dois apporter ? » (What do I have to bring?)
Pouvoir (To be able to / Can)
Use pouvoir when asking for permission or expressing the ability to do something. Notice how its spelling pattern (with an 'x' for je and tu) is similar to other irregular verbs like vouloir.
| Singulier | Pluriel |
|---|---|
| je peux | nous pouvons |
| tu peux | vous pouvez |
| il/elle/on peut | ils/elles peuvent |
« Où est-ce que je peux trouver une pharmacie ? » (Where can I find a pharmacy?)
« Est-ce que vous pouvez m'aider ? » (Can you help me?)
Devoir and pouvoir are what we call modal verbs. They almost never act alone. When you use them in a sentence, the second verb that follows them must always stay in its full, unconjugated form (the infinitive).
Example: Je peux parler (I can speak). Je dois partir (I must leave).