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Modal Verbs in English: Meaning, Use, and Examples
Learn English modal verbs with clear explanations, usage rules, and examples for can, could, may, might, must, and more.
Modal verbs are essential in English. They change the meaning of main verbs and help you express ability, permission, possibility, obligation, and advice. This guide breaks down the most common modal verbs and how to use them correctly.
What Are Modal Verbs?
Modal verbs (also called modal auxiliaries) include: can, could, may, might, must, should, will, would, shall. They don’t change form and are followed by a base verb (infinitive without “to”).
Common Modal Verbs and Their Uses
Can / Could
- Can expresses present ability or permission.
- Could expresses past ability, polite requests, or possibility.
Examples:
- I can swim.
- Could you help me?
May / Might
Used for possibility or permission (more formal). Might is often less certain than may.
Examples:
- It may rain today.
- I might be late.
Must / Have to
Used for obligation or strong necessity.
Examples:
- You must wear a seatbelt.
- I have to finish this report.
Should / Ought to
Used for advice or recommendations.
Examples:
- You should practice every day.
- You ought to rest.
Will / Would
Used for future, predictions, requests, or polite forms.
Examples:
- I will call you later.
- Would you like some tea?
Key Rules for Using Modal Verbs
- Modal verbs do not add -s in the third person.
- They are followed by the base form of the verb.
- They do not use “to” after them.
Common Mistakes
❌ She cans speak English.
✅ She can speak English.
❌ He musts go now.
✅ He must go now.
Practice with Real Conversations
Understanding modal verbs is easier when you practice them in real situations. An AI tutor like Eli can correct your usage and help you build fluency faster.