🗣️ RULES & OBLIGATIONS – how to talk about rules and duties in English (A2)
Level A2 (Rules and Obligations)🗣️ A2 RULES CHALLENGE
STEP 1 DI 10
📌 Lesson Contents (A2)
📌 Must vs Have to: Comparing obligations
Both express a duty (“I need to do it”), but there is an important difference in everyday use:
- MUST: An obligation you decide yourself, or one that comes from the speaker’s own authority.
➔ I must finish this report today. (I absolutely need to do it. It’s my priority.) - HAVE TO: An external obligation, a rule set by someone else (work hours, laws, regulations).
➔ I have to wear a uniform at work. (It’s the company’s rule. I don’t decide.)
🚫 Mustn’t vs Don’t have to (The big trap)
Many learners use “you don’t need to” for two completely different things: a strict ban or no obligation at all. In English these two ideas are opposites!
| Form | Real meaning | Correct Example ✅ |
|---|---|---|
| Mustn’t (Must not) | IT’S FORBIDDEN! You absolutely can’t do it. There is a strict ban. | You mustn’t park here. (Parking is forbidden.) |
| Don’t have to (Not necessary) | NO NEED. You can do it if you want, but nobody forces you. | You don’t have to wake up early tomorrow. (You don’t need to get up early. It’s a holiday.) |
❌ Common mistake: Thinking *don’t have to* means “forbidden”. If you say *”You don’t have to smoke here”*, it means “You aren’t obliged to smoke” (you can if you like)! To say it’s forbidden, use *You mustn’t smoke*.
⚙️ Grammar rules for Must
The verb MUST is a modal verb, so it has very strict rules:
- No “to” after must: we say You must go and never You must to go.
- It never changes in the third person: we say He must work and never He musts work.