Modal Verbs Quiz
Test your knowledge of English modal verbs — can, could, may, might, must, should, would — with our free 20-question quiz.
Start the Quiz →What This Quiz Covers
This quiz tests your understanding of English modal verbs across three CEFR levels — A2, B1 and B2. The 20 multiple-choice questions are designed to cover the full range of modal meaning, from basic ability and permission through to complex deduction, hypothetical structures and modal perfect forms.
At the A2 level you will encounter questions on everyday use of can and can't for ability and prohibition, and simple requests using could or may. At B1 the focus shifts to obligation (must, have to), advice (should, ought to), and probability (might, may). B2 questions challenge you with negative deduction (can't be, couldn't have), modal perfect forms (should have, could have, would have) and the subtle differences between closely related modals like may and might.
Each question presents a sentence with a gap and four answer choices. Only one answer is correct. You will receive instant feedback at the end showing your score and a short explanation of where to focus your revision.
What You'll Learn
- How to distinguish between modals of ability, permission, obligation, advice and possibility in context
- When to use modal perfect forms — should have, could have and would have — for past hypothetical or regret situations
- How to express degrees of certainty and deduction using must, might, could and can't
- The difference between mustn't (prohibition) and don't have to (absence of obligation), a distinction that trips up many intermediate learners
How to Prepare
Before taking this quiz, review the related study page: Modal Verbs vocabulary and grammar. Pay close attention to the meaning tables that show how each modal shifts meaning depending on whether it expresses possibility, necessity, permission or deduction. It also worth reading through example sentences aloud — modal verbs often feel more natural once you have heard them used in realistic contexts.
A common trap is confusing modals that look similar in meaning but behave differently in questions and negatives. For example, must has no past tense of its own — you need had to instead. Similarly, needn't and don't have to both express the absence of obligation, but mustn't expresses prohibition, not freedom. Reviewing the Modal Verbs guide on the LexFizz blog will help you internalise these distinctions before you attempt the quiz.
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Frequently Asked Questions
The quiz covers all the core English modal verbs: can, could, may, might, must, should, would, shall, and ought to. Questions also test modal perfect forms — should have, could have, would have — which are frequently tested at B2 level. Each question targets a specific modal meaning so you learn to distinguish between modals that are easy to confuse.
Must expresses internal obligation — a feeling that comes from the speaker themselves: You must try this cake, it's amazing. Have to expresses external obligation from rules, authority or circumstances: I have to wear a uniform at work. In negatives, mustn't means prohibition (You mustn't park here), while don't have to means there is no obligation (You don't have to come if you're busy).
All three can be used to ask for permission, but they differ in formality. Can is informal and the most common in everyday speech: Can I sit here? Could is slightly more polite: Could I use your phone? May is the most formal and is used in official or professional situations: May I leave the meeting early? In practice, can is used in the vast majority of everyday permission requests.
Modal verbs let you express how certain you are about a conclusion. Must signals strong positive deduction: She must be tired — she hasn't slept in two days. Can't or couldn't express strong negative deduction: That can't be right. Might, may and could express weaker possibility: He might be at home. The scale runs from must (almost certain) down to might (less certain).
Should have + past participle expresses criticism or regret about a past action that did not happen: You should have told me — I would have helped. It implies the action was the right or expected thing to do. Could have + past participle expresses past possibility — something was possible but did not happen: You could have taken a taxi instead of walking. The key difference is that should have carries a moral or advisable dimension, while could have is purely about past possibility.
Both may and might express possibility in the present or future, but might typically suggests a slightly lower degree of probability. Compare: It may rain this afternoon (fairly possible) with It might rain (possible but less certain). In practice, many speakers use them interchangeably and the distinction is subtle. One key difference is permission: may can be used to grant permission formally (You may leave), while might is not used this way.
Most modal verbs do not have a simple past form. Instead, English uses a different modal or a different structure. For past ability, can becomes could: She could swim at age four. For past obligation, must is replaced by had to: We had to leave early. For past possibility, may becomes might. To talk about hypothetical or unrealised past actions, you use modal + have + past participle: I should have called, They could have won.
The quiz tests several uses of would. It appears in conditional sentences as the result clause: I would help if I could. It is also used for polite requests: Would you mind closing the door? In reported speech, will shifts to would: She said she would call back. Additionally, would can describe past habits or repeated actions: When I was a child, I would spend hours in the garden. Understanding which use applies in context is key to scoring well.
Yes. The passive with modals follows the pattern: modal + be + past participle. For example: The report must be submitted by Friday. / The issue could be resolved quickly. / All passengers should be informed. The modal carries its usual meaning — obligation, possibility, advice — but the action is expressed passively. This structure is common in formal writing and is tested in the B2-level questions in this quiz.
The quiz spans A2 to B2 level, so it includes easier questions suitable for pre-intermediate learners as well as harder questions for upper-intermediate learners. If you are a complete beginner, it may be better to first study the basics of modal verbs using our grammar reference page or the Modal Verbs blog guide, then return to the quiz when you feel ready. All questions have four answer options, and you receive your score immediately after submitting.