Modal Verbs May and Might

Modal Verbs May and Might in English

Hello English learners! Welcome to a new lesson. In this lesson, we will look at modal verbs may and might in English, including their meanings, grammar rules, and the most common ways to use them in real sentences.

These small words are extremely common, and although they look simple, they can express several important ideas, such as possibility, permission, polite requests, and wishes. They are also very useful for learners preparing for Cambridge B2 First and C1 Advanced, because they help you sound more accurate, natural, and flexible in both speaking and writing.

Let’s explore how may and might work.

Why are modal verbs important?

Modal verbs such as can, could, may, might, must, shall, should, will, and would may be short, but they do a lot of work in English.

We use them to express ideas like:

• possibility
• ability
• permission
• obligation
• certainty
• politeness

Without modal verbs, your English would sound much flatter and less precise. They help you add meaning and nuance to what you say. For example, compare these two sentences:

• It rains tomorrow.
• It might rain tomorrow.

The second sentence is much more natural because it shows uncertainty.

If you want to move from basic English to more confident and fluent English, modal verbs are essential.

Are may and might difficult to learn?

Not really — but they can be a little confusing at first.

The good news is that modal verbs are quite easy to form. They do not change according to the subject:

• I may
• you may
• he may
• we may

We do not add -s in the third person singular.

• He might go to the party.
• He mights go to the party. ✗

Another useful rule is that modal verbs are always followed by the base form of the verb:

• She may be right.
• They might know the answer.

Once you understand the structure and see lots of examples in context, they become much easier to use.

Form of may and might

Affirmative

We use may or might + base verb.

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

Negative

We form the negative by adding not.

• You may not believe this, but it’s true.
• He might not come after all.

In modern English, mightn’t is possible, especially in British English, though it sounds rather formal or less common in everyday speech. Mayn’t exists, but it is very rare and unusual in modern usage.

Questions

We form questions by putting may or might before the subject.

• May I ask a question?
• Might it be possible to change the date?

When do we use may and might?

We often use may and might to talk about possibility. In some situations, they are interchangeable, although might often sounds a little less certain or more tentative than may.

We also use them for:

• possibility in the present or future
• permission
• polite requests
• wishes
• speculation about the past

Let’s look at each use in more detail.

1. May and might for possibility

This is the most common use of may and might.

We use them when we are not sure about something and want to say that it is possible.

• “Have you seen my car keys?”
  “They may be in your jacket pocket.”
• Now that Tom has a decent job, we might go on holiday to Thailand.
• We should ask her — she might know more than we do.
• I may study chemistry at university, but I haven’t decided yet.

In many cases, may and might mean something like perhaps or possibly.

A small difference between may and might

Although they are often both correct, might usually suggests a weaker possibility.

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

Both are correct, but might sounds a little less certain.

2. May and might for permission

We can use may to ask for or give permission. This use is more formal than can.

• May I come in?
• May I leave the table?
• You may borrow my pen.
• You may not go out until you’ve finished your homework.

Might can also be used to ask for permission, but it is very formal, old-fashioned, or highly polite in modern English.

• Might I ask you a question?
• Might I borrow your phone for a moment?

This is correct, but most people would usually say May I…? or Could I…? in everyday conversation.

3. Making polite requests with may and might

We can use may and might to make requests in a polite and formal way.

• May I speak to the manager, please?
• May I ask when the plane is expected to land?
• Might I ask your name?
• Might I suggest another solution?

Here, ‘might’ sounds even more polite and formal than ‘may’.

4. Expressing wishes with may

We often use may to express hopes, wishes, or blessings.

• May you live a long and happy life!
• Happy birthday! May all your wishes come true.
• May the force be with you.

This structure is quite formal or literary, but it is still common in greetings, speeches, and fixed expressions.

5. Might as the reported form of may

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

Direct speech:

• “Our cat is very ill. It may die.”

Reported speech:

• She said that their cat might die.

Another example:

Direct speech:

• “May I leave now?”

Reported speech:

• She asked if she might leave.

This is one of the common ways might is used in past reporting.

6. May and might for past possibility

We can also use may and might to speculate about the past.

To do this, we use:

may/might + have + past participle

• You may have left your wallet on the counter.
• She might have missed the train.
• We might have been late for the wedding because Mike forgot his camera.
• He may have forgotten about the meeting.

This structure means that something was possibly true in the past, but we are not sure.

7. May be and maybe

Learners often confuse may be and maybe, but they are different.

May be

May be is a verb phrase.

• The house may be too expensive.
• He may be right.

Maybe

Maybe is an adverb and means perhaps.

• Maybe we’ll buy that house.
• Maybe she’s just tired.

A simple trick:

• If you can replace it with perhaps, use maybe.
• If you need a verb phrase, use may be.

8. May as well and might as well

We use may as well and might as well to make suggestions, especially when something seems sensible, easy, or the best available option.

• We might as well eat before we leave.
• You may as well take an umbrella — it looks like rain.
• Since we’re already here, we might as well stay a bit longer.
• You may as well go by train; the journey is more comfortable than the bus.

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

Common sayings and proverbs with may and might

These modal verbs also appear in traditional sayings and proverbs. Here are a few examples:

• Never put off till tomorrow what may be done today.
• If wishes were horses, beggars might ride.
• He that has a tongue in his head may find his way anywhere.
• A ragged coat might cover an honest man.
• He that falls today might be up again tomorrow.

These expressions are a nice reminder that modal verbs are not only grammatical tools — they are deeply woven into the language itself.

Final thoughts

The modal verbs may and might are small, but they are incredibly useful. They help us talk about possibility, ask for permission, make polite requests, express wishes, and speculate about the past.

If you want your English to sound more natural, accurate, and advanced, these are two modal verbs you should know well. They are especially valuable for B2 First and C1 Advanced learners, because they allow you to express subtle meaning in a clear and elegant way.

The best way to remember them is to notice how they are used in real sentences and then start using them yourself. Little by little, they will become a natural part of your English.

FAQ 

What is the difference between may and might?

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

Can may and might both be used for permission?

Yes, both can be used for permission, but may is much more common. Might sounds very formal and rather old-fashioned in this use.

How do we use may and might for past possibility?

We use may have or might have followed by a past participle to speculate about the past, for example: She might have missed the train.

What is the difference between may be and maybe?

May be is a verb phrase, while maybe is an adverb meaning perhaps.

Are may and might important for Cambridge exams?

Yes, they are very useful for B2 First and C1 Advanced because they help learners express possibility, politeness, and speculation more accurately.