ES Dubai - 'Must', 'Have To', and 'Should': Expressing Obligation and Advice
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‘Must’, ‘Have To’, and ‘Should’: Expressing Obligation and Advice

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Do you ever ask yourself:

“Do I have to study today?”

“Should I go to class early?”

“Must I do all this homework?”

If so, you’re already thinking in English! In this blog, we’ll explore must, have to, and should—three powerful little helpers that make it easier to talk about rules, duties, and advice. Let’s see how to use these expressions with a detailed guide from our English language institute in Dubai.

1. What Does “Must” Mean?

“Must” shows a strong obligation, either from the speaker or a rule/law. It often sounds urgent or very important.

Examples:

  • You must wear your student ID at all English schools in Dubai. (School rule)
  • I must call my parents today. (Strong personal feeling)
  • People must respect traffic lights in Dubai. (Law)

Use “Must” When:

  • The speaker feels it’s very necessary.
  • Talking about rules or laws.
  • Making strong recommendations.

Common Mistakes:

❌ You must to go home. ✅ You must go home.

2. What About “Have To”?

“Have to” is also about obligation—but the need comes from outside. A rule, schedule, or someone else tells you what to do.

Examples:

  • I have to finish my homework by 8 p.m. (My teacher said so)
  • Tourists have to show their visas at immigration. (Legal rule)
  • He has to wear a suit to work. (Company policy)

Grammar tip: I/you/we/they have to He/she/it has to

Quick Comparison:

  • Must = my own strong feeling
  • Have to = someone else’s rule

3. What Does “Should” Mean?

“Should” gives advice, recommendations, or opinions. It’s soft and helpful—not strict.

Examples:

  • You should sleep early before your exam. (Friendly advice)
  • We should try that new Lebanese restaurant in Dubai Marina! (Suggestion)
  • He should study more. (It’s a good idea)

Use “Should” For:

  • Helpful tips from a friend or teacher
  • Sharing opinions politely

“Must” vs. “Have to” vs. “Should”

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Forms: Negatives and Questions

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Common Mistakes to Avoid

❌ She must to do it. ✅ She must do it.

❌ I should to study more. ✅ I should study more.

❌ He don’t have to go. ✅ He doesn’t have to go.

Practice Time – Let’s Use What You Learned!

Try writing sentences like:

  1. Must – Talk about an important rule: I must not be late to class.
  2. Have to – Mention something you need to do today: I have to prepare for tomorrow’s group activity.
  3. Should – Give advice to your friend: You should try shawarma from that corner shop—it’s amazing!

Learn More with ES Dubai!

Want to grow your English skills faster? Join our course in Dubai, and we will help you speak, write, and understand with confidence. Whether you’re in a beginner English course or preparing for IELTS, we’ve got the right class for you.

Enquire now to find the perfect courses of English for you and start your English journey with us today!

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