Ce qu'on peut, doit et devrait faire
Tu sais parler au présent. Mais dans la vraie vie, on ne parle pas seulement d'actions.
On parle de :
Exemple : I can speak English. I must study. You should practice every day.
Ces trois petits mots vont complètement changer ton niveau.
Aujourd'hui, tu entres dans le monde des modals.
Suivez attentivement ce qu'il dit et appliquez cela à votre vie.
Aujourd'hui, nous avons deux vidéos à regarder.
Les modaux sont des auxiliaires particuliers. Ils suivent des règles fixes :
Sujet + can + verbe base | Négatif : cannot / can't | Interro : Can + sujet + verbe ?
Capacité / Habileté : Konan can speak three languages. — Adjoua can't drive yet.
Permission (informelle) : Can I use your phone? — You can leave early today.
Possibilité générale : It can get very hot in Bouaké in March.
| Forme | Exemple |
|---|---|
| Affirmatif | Aminata can solve this problem. |
| Négatif | She cannot / can't come tonight. |
| Interrogatif | Can you help me with my English homework? |
Sujet + must + verbe base | Négatif : must not / mustn't (= interdiction !)
Obligation forte (vient du locuteur) : You must study hard for the BAC. — Students must arrive on time.
Déduction logique / Certitude : She scored 18/20 — she must be very intelligent.
Interdiction (mustn't) : You mustn't cheat during the exam. — Students mustn't use their phones.
Sujet + should + verbe base | Négatif : should not / shouldn't
Conseil / Recommandation : You should revise your lessons every evening. — Konan should see a doctor.
Obligation morale (moins forte que must) : We should respect our teachers. — You shouldn't be late.
Attente / Ce qui est normal : The results should be out by Friday.
Sujet + have to / has to + verbe base | Négatif : don't / doesn't have to (= pas obligatoire)
Obligation externe (règle, loi, nécessité) : Adjoua has to wear a uniform at school. — We have to pay school fees.
Absence d'obligation (don't have to) : You don't have to come — it's optional. — She doesn't have to cook today.
MUST vs HAVE TO — quelle différence ?
| MUST | HAVE TO |
|---|---|
| Obligation personnelle (le locuteur décide) | Obligation externe (règle, loi, patron…) |
| I must stop eating junk food. (je me l'impose) | I have to wear a mask at the hospital. (règle) |
Sujet + ought to + verbe base | Négatif : ought not to / oughtn't to
Devoir moral / obligation morale (= should, plus formel) : You ought to apologise to your teacher. — We ought to help the poor.
Conseil raisonnable : Kouamé ought to practise English every day if he wants to pass the oral.
| Modal | Sens principal | Force | Exemple |
|---|---|---|---|
| can | Capacité, permission, possibilité | Neutre | She can swim. |
| must | Obligation forte, déduction | 🔴 Forte | You must study. |
| should | Conseil, recommandation | 🟡 Modérée | You should rest. |
| have to | Obligation externe (règle) | 🔴 Forte | She has to wear a uniform. |
| ought to | Devoir moral (formel) | 🟡 Modérée | You ought to apologise. |
Le piège numéro 1 au BEPC et au BAC : confondre mustn't et don't have to. 🚫 You mustn't smoke here. → C'est interdit. ✅ You don't have to come. → Ce n'est pas obligatoire (mais tu peux si tu veux). Et rappelle-toi : après un modal, toujours l'infinitif sans TO (sauf have to et ought to). ZÉRO PANIQUE !
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