Must and Have To: Obligation

• CEFR A2–B1
• Grammar
• Printable
• Answer key

Must and Have To: Obligation is a printable grammar worksheet for English language learners at CEFR level A2–B1. It covers must, have to, do not have to, must not, with 5 exercises and an answer key.

Use must and have to for obligation: something is necessary.

Use do not have to when something is not necessary.

Use must not when something is not allowed. This is different from do not have to.

Examples

• Students must arrive on time.
• I have to finish this today.
• She has to wear a uniform.
• You do not have to come if you are ill.
• We must not use phones during the exam.
• Do you have to work on Saturday?
• He does not have to cook tonight.
• Visitors must show ID.

What's in this worksheet

1. Choose the meaning
2. Correct the mistake
3. Complete the rule
4. Rewrite with the same meaning
5. Class rules

Common mistakes

• You do not must pay.  →  You do not have to pay. Use do not have to for no obligation.
• She have to leave now.  →  She has to leave now. Use has to with he, she, and it.
• You must not bring anything means it is optional.  →  You do not have to bring anything means it is optional. Must not means forbidden.
• Do I must sign here?  →  Do I have to sign here? Questions usually use have to.

Speaking prompts

• What do you have to do at your school or work?
• What must people not do in a cinema?
• What do tourists have to do at an airport?
• What do you not have to do at weekends?