Modal Verbs Quiz: Must, Might, Should & More | ESL Grammar
Updated: 5 days ago
Test your English grammar with this modal verbs quiz! Practise must, might, should, can, could, may and other common modal verbs through multiple-choice questions, fill-in-the-blank exercises and error correction.
This quiz is ideal for adult ESL/EFL learners at Pre-Intermediate level and above and is perfect for self-study, classroom revision or English grammar practice.
Can you get 15/15? Let’s find out!
📚 Quick Review: What Are Modal Verbs?
Modal verbs are helping verbs that give us extra information about a main verb.
They can express:
ability – can, could
possibility – may, might, could
permission – can, may, could
advice – should, ought to
necessity – must, have to
prohibition – mustn't
requests – can, could, would, may
Common Modal Verbs
Modal | Common meaning | Example |
can | ability / permission | I can swim. |
could | past ability / polite request / possibility | Could you help me? |
may | permission / possibility | May I come in? |
might | possibility | It might rain later. |
must | necessity / strong deduction | You must wear a seatbelt. |
should | advice / recommendation | You should get some rest. |
would | polite requests / hypothetical situations | Would you like some tea? |
⭐ One important rule
After most modal verbs, use the base form of the verb.
✅ She can swim.
✅ You should go.
✅ They might arrive later.
❌ She can swims.
❌ You should to go.
❌ They might arrives.
Now let's see how well you know them!
📝 Modal Verbs Quiz
How to do the quiz
Read each question carefully and choose or write your answer.
Don't scroll down too quickly! 😆
The answers and explanations are at the end, so try all 15 questions before checking your score.
🔹 Part 1: Multiple Choice
Choose the correct modal verb.
1. You ___ wear a seatbelt while driving. It's the law.
a) can
b) must
c) could
2. I'm not sure where Lisa is. She ___ be at the library.
a) must
b) might
c) can't
3. You look tired. You ___ go to bed a little earlier tonight.
a) should
b) might
c) can
4. You ___ park here. It's private property.
a) can
b) should
c) mustn't
5. When I was younger, I ___ run five kilometres without stopping.
a) can
b) could
c) must
🔹 Part 2: Fill in the Blanks
Complete each sentence with a suitable modal verb.
6. You ___ not talk during the exam.
(prohibition)
7. I ___ speak three languages.
(present ability)
8. We ___ leave now if we want to catch the train.
(necessity)
9. He ___ be tired. He's been working all day.
(logical deduction)
10. You ___ try the chocolate cake. It's delicious!
(recommendation)
🔹 Part 3: Find and Correct the Mistake
Each sentence contains a mistake involving a modal verb.
Can you find it?
You should to eat more vegetables.
Rewrite the sentence:
..............................................................................................
He can to drive very well.
Rewrite the sentence:
..............................................................................................
She musts finish her work before going home.
Rewrite the sentence:
..............................................................................................
They might goes out later.
Rewrite the sentence:
. .............................................................................................
We could to take the earlier train.
Rewrite the sentence:
. .............................................................................................
🛑 STOP!
Have you answered all 15 questions?
Don't peek at the answers yet! 👀
Take a moment to check your answers before scrolling down.
✅ Answers & Explanations
Part 1: Multiple Choice
1. b) must
You must wear a seatbelt while driving.
We use must when something is necessary or required, especially because of a rule or law.
Must = strong necessity
Example: You must show your passport at the airport.
2. b) might
She might be at the library.
We use might to talk about a possibility when we aren't sure.
Might = possible, but not certain
Example: I might go out tonight.
3. a) should
You should go to bed a little earlier tonight.
We use should to give advice or make a recommendation.
Should = good idea / advice
Example: You should drink more water.
4. c) mustn't
You mustn't park here.
Mustn't means something is prohibited or not allowed.
Mustn't = it is not allowed
Example: You mustn't use your phone during the exam.
⚠️ Don't confuse:
mustn't = prohibited
don't have to = not necessary
Compare:
You mustn't park here.= Parking here is not allowed.
You don't have to park here.= Parking here isn't necessary.
5. b) could
When I was younger, I could run five kilometres without stopping.
We use could to talk about general ability in the past.
Can → present ability
Could → past ability
Example: I can swim now, but I couldn't swim when I was five.
🔹 Part 2: Fill in the Blanks
6. must
You must not talk during the exam.
We use must not / mustn't for prohibition.
Mustn't means something is not allowed.
7. can
I can speak three languages.
We use can to talk about present ability.
Example: She can play the piano.
8. must
We must leave now if we want to catch the train.
Here, leaving is necessary.
Must is often used when the speaker feels that something is necessary.
9. must
He must be tired. He's been working all day.
This is a slightly different use of must.
Here, must expresses a strong logical conclusion.
We have evidence:
He's been working all day.
Therefore, we think he is tired.
must be = I think this is very likely / I'm almost certain
Example: The lights are on. They must be home.
10. should
You should try the chocolate cake. It's delicious!
We use should for advice, suggestions and recommendations.
You should try it!
This doesn't mean you are required to try it. It's simply a strong recommendation.
🔹 Part 3: Correct the Mistakes
11.
❌ You should to eat more vegetables.
✅ You should eat more vegetables.
After should, use the base form of the verb.
should + eat
Not:
❌ should to eat
❌ should eats
12.
❌ He can to drive very well.
✅ He can drive very well.
After can, use the base form of the verb.
can + drive
Not:
❌ can to drive
❌ can drives
13.
❌ She musts finish her work before going home.
✅ She must finish her work before going home.
Modal verbs do not take -s in the third person.
Compare:
She works every day.
She must work every day.
Not:
❌ She musts work.
14.
❌ They might goes out later.
✅ They might go out later.
After might, use the base form.
might + go
Not:
❌ might goes
❌ might going
15.
❌ We could to take the earlier train.
✅ We could take the earlier train.
After could, use the base form of the verb.
could + take
Not:
❌ could to take
❌ could takes
🏆 How Did You Score?
Give yourself one point for each correct answer.
🌟 13–15: Modal Verb Master!
Excellent! You have a strong understanding of common modal verbs. Keep practising them in real-life conversations to make your English sound even more natural.
😊 10–12: Great Job!
You have a good understanding of modal verbs, but there are a few areas worth reviewing. Pay particular attention to the difference between must, mustn't, should and might.
💪 7–9: Keep Practising!
You're on the right track! Review the explanations above and try the quiz again in a few days.
🌱 0–6: Time for a Quick Review
Don't worry! Modal verbs can be tricky because one modal can have several meanings. Start with the basics — can, could, should, must and might — and practise them in short everyday sentences.
💬 Share your score in the comments! ⬇️
Did you enjoy this quiz? Want more like it?
Let us know — and check out more grammar tips & quizzes below👇!
🎥 Prefer to Learn with Video?
Want to take the quiz with me?
🎬 Watch the Modal Verbs Quiz on YouTube and test your knowledge of must, might, should, can, could and more.
👉 Pause the video, choose your answer and then check the explanation.
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💡 Modal Verb Tip: Think About the Meaning
When you see a modal verb question, don't just look at the grammar.
Ask yourself:
What does the speaker want to express?
🔵 Ability? → can / could
🟢 Possibility? → might / may / could
🟡 Advice? → should
🔴 Necessity? → must
🚫 Prohibition? → mustn't
💬 Polite request? → could / would / may
This simple strategy can make modal verb questions much easier.
☕ Practise Modal Verbs in Real Life
Modal verbs are everywhere in everyday English.
Imagine you're at a café:
Customer: Could I have a latte, please?
Barista: Of course. Would you like anything to eat?
Customer: I might have a slice of cake.
Barista: You should try our chocolate cake. It's very popular!
Customer: Great! I'll have one.
Notice how the modal verbs make the conversation more natural:
Could I...? → polite request
Would you...? → polite question/offer
might → possibility
should → recommendation
Try finding modal verbs in conversations, films, podcasts and songs. It's a great way to learn how native speakers actually use them.
📥 Want a Printable Version?
Prefer to study offline?
Download the free Modal Verbs Quiz PDF and practise at your own pace.
The printable version includes the quiz and a separate answer key, making it useful for:
self-study
English classes
tutoring
grammar revision
homework
exam preparation
❓ Frequently Asked Questions About Modal Verbs
What are modal verbs in English?
Modal verbs are helping verbs used with a main verb to express meanings such as ability, possibility, advice, permission, necessity and obligation.
Common modal verbs include can, could, may, might, must, should and would.
2. What are the most common modal verbs?
Some of the most common modal verbs are can, could, may, might, must, shall, should, will and would.
3. What is the difference between must and should?
Must expresses strong necessity or obligation.
You must wear a seatbelt.
Should usually expresses advice or a recommendation.
You should wear comfortable shoes.
What is the difference between mustn't and don't have to?
Mustn't means something is prohibited.
You mustn't smoke here.
Don't have to means something is not necessary.
You don't have to bring anything.
These two expressions have very different meanings.
Do modal verbs take "to"?
Usually, no.
We say:
She can swim.
You should go.
They might arrive later.
Not:
❌ She can to swim.
❌ You should to go.
❌ They might to arrive.
However, some expressions such as have to, ought to and be able to are different structures.
Do modal verbs take -s?
No. Modal verbs do not take -s in the third person.
She can drive.
He must leave.
It might rain.
Not:
❌ She cans drive.
❌ He musts leave.
❌ It mights rain.
📚 Keep Practising Your English
If you enjoyed this modal verbs quiz, you might also like:
Learn how to use can, could, may, might, must, should, would and more with clear explanations and examples.
Practise polite requests and the useful expression Would you mind...?
Practise forming questions with be, do, have, will, could, should and more.
Explore WH-questions, yes/no questions, question tags and indirect questions.
☕ Keep Learning
Learn → Read → Listen → Practise → Test
The more you meet grammar in different contexts, the easier it becomes to use it naturally.
Which modal verb do you find the most difficult: must, might, should, can, or could?
💬 Leave your answer in the comments — and tell me why!
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