Modal Verbs May and Might in English: Difference, Meaning and Examples

May and might in English are two small modal verbs with a big job. We use them to talk about possibility, uncertainty, permission, polite requests, wishes and past speculation.

For many learners, the difficult part is not the basic grammar. The difficult part is understanding the small difference in meaning.

Compare:

• It may rain later.
• It might rain later.

Both sentences are correct. Both mean that rain is possible. However, might often sounds a little less certain than may.

In this lesson, you will learn how to use may and might naturally, how they differ, and how they can help you sound more accurate in everyday English and Cambridge exams such as B2 First and C1 Advanced.

What Are Modal Verbs?

Modal verbs are auxiliary verbs that change or add meaning to the main verb. They help us express ideas such as possibility, permission, certainty, obligation, advice, politeness and deduction.

Common modal verbs include:

can, could, may, might, must, shall, should, will and would.

Look at the difference:

• It rains tomorrow. ✗
• It might rain tomorrow. ✓

The first sentence is not natural because we need a modal verb to show uncertainty about the future. The second sentence sounds natural because might tells us that rain is possible, but not certain.

Basic Grammar: How to Use Modal Verbs May and Might

The good news is that may and might are easy to form.

We use:

may / might + base verb

Examples:

• I may go out later.
• She might come with us.
• They may need more time.
• He might know the answer.

Important Rule: No -s After He, She or It

Modal verbs do not change with the subject.

Correct:

• She might go to the party.

Incorrect:

• She mights go to the party. ✗

Negative Forms

We form the negative with not:

• He may not agree with you.
• She might not come after all.
• They may not understand the instructions.
• We might not finish on time.

In British English, mightn’t is possible, but it is not very common in everyday speech.

• He mightn’t be ready yet.

Mayn’t exists, but it sounds very old-fashioned and is rarely used today.

Question Forms

In questions, we put may or might before the subject.

• May I ask a question?
• May we leave early?
• Might I suggest another idea?

However, might I…? sounds very formal and old-fashioned in modern English. In everyday conversation, people usually say:

• Can I ask a question?
• Could I ask a question?
• May I ask a question?

May vs Might: What Is the Difference?

The main difference is often the level of certainty.

May	possible	medium possibility	It may rain later.
Might	possible, but less certain	weaker possibility	It might rain later.

This difference is not always strict, and native speakers often use them interchangeably. However, as a general rule:

May = possible

Might = perhaps possible, but less certain

Examples:

• She may be at home.
  = It is quite possible.
• She might be at home.
  = It is possible, but I am less sure.
• We may win the match.
  = There is a real chance.
• We might win the match.
  = There is a chance, but I am not very confident.

This small difference is especially useful in B2 and C1 writing, where you often need to express ideas carefully rather than too strongly.

1. May and Might for Present or Future Possibility

This is the most common use of may and might.

We use them when something is possible, but not certain.

Examples:

• She may be busy at the moment.
• He might know the answer.
• We may visit our cousins next weekend.
• They might move to London next year.
• I may study psychology at university.
• It might snow tonight.

In these sentences, the speaker is not 100% sure. They are simply saying that something is possible.

Everyday Examples

• Take your umbrella. It might rain later.
• I may be a little late, so don’t wait for me.
• She might not want to talk about it.
• We may need to change the plan.
• The shop might still be open.

Cambridge-Style Examples

• The rise in online learning may lead to more flexible education in the future.
• Some people might argue that exams are not the best way to measure ability.
• This solution may not be suitable for everyone.
• The proposal might improve the situation, but it would require careful planning.

These phrases are very useful in essays, reports and proposals because they help you avoid sounding too absolute.

2. May and Might for Permission

We use may to ask for or give permission. It is more formal and polite than can.

Examples:

• May I come in?
• May I use your phone?
• May we leave the room?
• You may borrow my dictionary.
• Students may use a calculator during the exam.

We can also use may not to refuse permission:

• You may not leave until the test has finished.
• Visitors may not enter this area.
• Students may not use mobile phones during the exam.

This use of may is common in formal rules, signs, schools, exams and official situations.

What About Might for Permission?

Might can be used to ask for permission, but it sounds very formal, polite or old-fashioned.

Examples:

• Might I ask you a personal question?
• Might I make a suggestion?
• Might I have a word with you?

These sentences are correct, but they sound more formal than everyday English. Most people would usually say:

• May I ask you a question?
• Could I ask you a question?

3. May and Might for Polite Requests

We can use may and might to make requests sound polite.

Examples with may:

• May I speak to the manager, please?
• May I ask when the course begins?
• May I have your name, please?

Examples with might:

• Might I suggest a different approach?
• Might I ask why you made that decision?
• Might I trouble you for a moment?

In modern English, might sounds extremely polite and formal in requests. It is more common in professional, academic or very polite situations.

For everyday English, these are more common:

• Can I ask you something?
• Could I ask you something?
• May I ask you something?

4. May for Wishes and Blessings

We use may in formal or poetic wishes.

Structure:

May + subject + base verb

Examples:

• May you have a long and happy life.
• May all your dreams come true.
• May the new year bring you peace and happiness.
• May you never lose your sense of humour.

This structure sounds formal, literary or ceremonial. You often see it in greetings, speeches, prayers, blessings and fixed expressions.

A famous example is:

• May the force be with you.

A little grammar, a little cinema — not a bad deal.

5. Might as the Reported Form of May

In reported speech, might is often used as the past form of may.

Direct speech:

• “I may be late.”

Reported speech:

• She said she might be late.

More examples:

Direct speech:

• “We may move abroad.”

Reported speech:

• They said they might move abroad.

Direct speech:

• “The meeting may be cancelled.”

Reported speech:

• He said the meeting might be cancelled.

Direct speech:

• “May I leave early?”

Reported speech:

• She asked if she might leave early.

This is especially useful when reporting what someone said, thought or believed.

6. May Have and Might Have for Past Possibility

To speculate about the past, we use:

may / might + have + past participle

Examples:

• She may have forgotten about the meeting.
• He might have missed the train.
• They may have misunderstood the instructions.
• You might have left your keys in the car.
• We may have taken the wrong road.

This means we are not sure what happened in the past. We are only making a possible guess.

May Have vs Might Have

Again, might have often sounds a little less certain than may have.

• She may have left already.
  = This is quite possible.
• She might have left already.
  = This is possible, but I am less sure.

Negative Past Possibility

We can also use:

may not have + past participle

might not have + past participle

Examples:

• He may not have received your message.
• She might not have understood the question.
• They may not have realised how serious the problem was.
• We might not have locked the back door.

These are very useful when you want to speculate carefully.

7. May Be vs Maybe

Learners often confuse may be and maybe, but they are not the same.

May Be

May be is a verb phrase.

It uses:

may + be

Examples:

• He may be right.
• The story may be true.
• This exercise may be difficult at first.
• She may be waiting outside.

Maybe

Maybe is an adverb. It means perhaps.

Examples:

• Maybe he is right.
• Maybe the story is true.
• Maybe we should ask for help.
• Maybe she is waiting outside.

Easy Trick

If you can replace the word with perhaps, use maybe.

• Maybe she is tired.
  = Perhaps she is tired.

If you need a verb phrase, use may be.

• She may be tired.

8. May As Well and Might As Well

We use may as well and might as well when we suggest doing something because it seems sensible, convenient or there is no better option.

Examples:

• We might as well wait here.
• You may as well take an umbrella.
• Since we’re already in town, we might as well do some shopping.
• The film starts in ten minutes, so we might as well go in now.
• There’s nothing else to do, so we may as well start.

In everyday English, might as well is more common than may as well.

Meaning:

It is probably a good idea because there is no strong reason not to do it.

Common Mistakes with May and Might

Mistake 1: Adding -s After May or Might

Incorrect:

• She mights come later. ✗

Correct:

• She might come later. ✓

Mistake 2: Using To After May or Might

Incorrect:

• He may to arrive soon. ✗

Correct:

• He may arrive soon. ✓

Modal verbs are followed by the base form of the verb, not to + verb.

Mistake 3: Confusing Maybe and May Be

Incorrect:

• She maybe tired. ✗

Correct:

• She may be tired. ✓
• Maybe she is tired. ✓

Mistake 4: Using May for Strong Certainty

Incorrect:

• He may be at work. I saw him there five minutes ago. ✗

Better:

• He must be at work. I saw him there five minutes ago. ✓

Use must when you are almost certain. Use may or might when you are not sure.

Certainty Scale: May, Might, Must and Can’t

Understanding certainty levels makes modal verbs much easier.

Almost certain something is true	must	She must be tired. She has worked all day.
Possible	may	She may be tired.
Less certain possibility	might	She might be tired.
Almost certain something is not true	can’t	She can’t be tired. She has just woken up.

This is a very useful contrast for Cambridge exams, especially in sentence transformations and Use of English tasks.

May and Might in Cambridge B2 First and C1 Advanced

For B2 First and C1 Advanced, may and might are useful because they help you express ideas more carefully.

Instead of writing:

• Technology will replace teachers.

You can write:

• Technology may replace some traditional teaching methods.
• Technology might change the role of teachers in the future.

Instead of saying:

• This plan is not successful.

You can write:

• This plan may not be successful unless it is properly organised.
• This plan might not work for all students.

This sounds more balanced, mature and exam-appropriate.

Useful Exam Phrases

• This may lead to serious problems.
• This might result in better communication.
• Some people may argue that this is unfair.
• It might be better to consider another solution.
• The proposal may not be suitable for younger students.
• This approach might help to reduce stress.

These phrases are excellent for essays, reports, proposals and speaking tasks.

Mini Practice: Choose May or Might

Complete the sentences with may or might. In some sentences, both are possible.

1. Take a jacket. It ______ get cold later.
2. She ______ be at home, but I’m not sure.
3. ______ I ask you a question?
4. He ______ have forgotten about the appointment.
5. We ______ as well start now.
6. This solution ______ not work for everyone.
7. Students ______ not use dictionaries during the test.
8. ______ all your dreams come true!

Answers: 1. might / may, 2. may / might, 3. May, 4. may / might, 5. might / may, 6. may / might, 7. may, 8. May

Download More Exercise on Modal Verbs May and Might in PDF here

Final Thoughts on Modal Verbs May and Might

May and might are essential modal verbs in English because they help you express possibility, uncertainty, permission, politeness and past speculation.

The most important difference is this:

May often suggests a real possibility.

Might often suggests a weaker or more tentative possibility.

However, in many everyday situations, both are possible.

If you are preparing for B2 First or C1 Advanced, learning to use may and might well will help your English sound more precise, more natural and more advanced. They are small words, but they do a great deal of work — as the best small words often do.

FAQ: Modal Verbs May and Might in English

What is the difference between may and might?

Both may and might are used for possibility, but might often suggests a weaker or less certain possibility than may.

Can I use may and might for permission?

Yes, but may is much more common for permission. Might is possible, but it sounds very formal or old-fashioned.

How do we use may and might for the past?

Use may have or might have + past participle.

Example:

• She might have missed the train.

What is the difference between may be and maybe?

May be is a verb phrase.

• He may be tired.

Maybe is an adverb meaning perhaps.

• Maybe he is tired.

Is might more polite than may?

In requests, might can sound more polite and formal than may, but it is less common in everyday English.

Related posts:

Modal Verbs for Suggestions

Can, Could and Be Able to

Used to vs Would

Stative and Action Verbs in English

Gradable and Non-gradable Adjectives

Alternatives to BUT

How to Express Exception in English

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