Unit 7
Grammar
Modals (Obligation)
3/6
📖 Modals for Obligation
| Modal | Use | Example |
|---|---|---|
| Must | Strong obligation (speaker's opinion) | "You must respect the law." |
| Have to | External obligation (rules, facts) | "You have to pay taxes." |
| Should | Advice, recommendation | "You should vote." |
| Mustn't | Prohibition | "You mustn't cheat." |
| Don't have to | No obligation | "You don't have to attend." |
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Practice
Choose the correct modal
1. You stop at the red light. (obligation)
2. You eat more vegetables. (advice)
3. You drink and drive. (prohibition)
4. You wear a uniform at school. (external obligation)