Modal verbs are helping verbs that express ability, permission, possibility, obligation, advice, intention, or certainty. They are always used with the base form of a verb and never change their form. Below is a clear explanation of the nine most common modal verbs used in English.
Modal Verb – Can
Can is used to show ability or to give and ask for permission. It is one of the most commonly used modal verbs in everyday English and sounds informal and natural in conversation.
Possible Usage
- Ability
- Permission
- Informal requests
Examples
- She can speak English.
- I can swim very well.
- You can use my phone.
Modal Verb – Could
Could is the past form of can, but it is also used to make polite requests. It sounds more respectful and softer than can, especially in formal situations.
Possible Usage
- Past ability
- Polite requests
- Suggestions
Examples
- He could run fast when he was young.
- Could you please help me?
- We could try again tomorrow.
Modal Verb – May
May is used to give formal permission and to show possibility. It is more polite and formal than can and is commonly used in written and formal spoken English.
Possible Usage
- Permission
- Possibility
Examples
- You may come in.
- He may join the class tomorrow.
- It may rain today.
Modal Verb – Might
Might is used to show a weak or less certain possibility. It suggests that something is possible, but the speaker is not sure.
Possible Usage
- Weak possibility
- Uncertain situations
Examples
- It might rain today.
- She might be at home.
- We might meet again.
Modal Verb – Will
Will is used to talk about the future, to make promises, and to show decisions made at the moment of speaking. It is very common in both spoken and written English.
Possible Usage
- Future actions
- Promises
- Instant decisions
Examples
- I will call you later.
- She will help you.
- We will start the class now.
Modal Verb – Would
Would is used to make polite requests and to talk about habits in the past. It sounds more polite and formal than will.
Possible Usage
- Polite requests
- Past habits
- Preferences
Examples
- Would you like some tea?
- He would walk to school every day.
- I would like to help you.
Modal Verb – Shall
Shall is used to talk about future intentions and to make suggestions, especially with I and we. It is more common in British English and formal contexts.
Possible Usage
- Future intention
- Suggestions
- Offers
Examples
- We shall start the class now.
- Shall we begin the lesson?
- I shall inform you soon.
Modal Verb – Should
Should is used to give advice, make recommendations, and express expectation. It tells what is right or best to do in a situation.
Possible Usage
- Advice
- Expectation
- Moral duty
Examples
- You should practice daily.
- Students should respect teachers.
- He should arrive on time.
Modal Verb – Must
Must is used to express strong obligation or certainty. It shows that something is necessary or that the speaker is very sure about something.
Possible Usage
- Obligation
- Strong necessity
- Certainty
Examples
- You must wear a seatbelt.
- Students must follow the rules.
- He must be tired after work.
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