May appears in sentences about possibility, permission, wishes, and uncertain situations. You can say It may rain later, May I come in?, or May you have a wonderful year, but the meaning of may is different in each sentence.
The grammar itself stays fairly simple. May is a modal verb, so it normally comes before a verb in its base form. The important part is understanding what the complete sentence is expressing.
What Does May Mean in a Sentence?
May is a core modal verb. Its most common uses are:
- expressing present or future possibility;
- asking for permission;
- giving or refusing permission;
- expressing formal wishes or hopes.
It also appears in longer patterns such as:
may be working
may have forgotten
may have been delayed
and in expressions such as:
may well
may as well
The meaning comes from the complete construction, not from may alone.
Basic Sentence Structure with May
The simplest pattern is:
subject + may + base-form verb
Ava may arrive later.
The plan may change.
We may need more time.
The verb after may stays in the base form.
Correct:
She may leave early.
Not:
She may leaves early.
Not:
She may to leave early.
May does not change according to the subject:
I may go.
She may go.
They may go.
There is no third-person form such as mays in this modal use.
Using May for Present Possibility
May can show that something is possibly true now.
Olivia may be at home.
Daniel may know the answer.
The key may belong to Marcus.
This may explain the delay.
The speaker is not presenting the information as certain.
Compare:
Daniel is in his office.
This presents the situation as a fact.
Daniel may be in his office.
This presents it as a possibility.
Using May for Future Possibility
May is also common when something could happen in the future.
The weather may improve tomorrow.
Maya may join us for dinner.
Prices may rise next month.
The store may close early on Friday.
The sentence expresses uncertainty rather than a definite prediction.
May does not tell you an exact percentage of likelihood. It simply leaves the event open as a real possibility.
May Be + -ing for an Ongoing Possibility
When the possible situation is in progress, may can combine with:
may + be + -ing form
Noah may be sleeping.
Ava may be waiting outside.
The team may be discussing the proposal now.
Someone may be using the meeting room.
Here, may expresses uncertainty while be + -ing presents the activity as ongoing.
This structure can also refer to a future activity:
We may be traveling during the first week of July.
May Be + Past Participle in Passive Sentences
May can also appear in passive structures:
may + be + past participle
The meeting may be postponed.
Your application may be reviewed tomorrow.
The road may be closed overnight.
Additional documents may be required.
The modal expresses possibility, while be + past participle creates the passive structure.
The same pattern can sometimes express permission in formal rules:
Photographs may be taken in this area.
Here, the meaning can be understood as permission rather than uncertainty, depending on context.
May Have + Past Participle for Past Possibility
To express uncertainty about an earlier event, use:
may + have + past participle
Emma may have missed the train.
The parcel may have arrived yesterday.
Leo may have forgotten the appointment.
I may have left my glasses at the office.
The event is in the past, but the speaker is uncertain about what happened.
This is important because may itself does not need a past form to refer to an earlier possibility.
May Have Been + -ing
A past possibility can also involve an activity that was continuing for a period of time.
Maya may have been working when you called.
The children may have been sleeping upstairs.
Daniel may have been waiting for us.
The company may have been considering the change for months.
The structure combines may with perfect and progressive meaning.
May Have Been + Past Participle
Perfect and passive structure can also combine after may.
The email may have been sent to the wrong address.
The files may have been deleted accidentally.
The package may have been delivered to a neighbor.
The decision may have been influenced by new evidence.
These sentences express uncertainty about an earlier passive event.
Using May to Ask for Permission
May can be used to ask permission.
May I come in?
May I borrow your pen?
May we leave a little early?
May I ask you a question?
This use is standard and often sounds formal or polite.
In everyday conversation, can is also very common:
Can I borrow your pen?
That is not incorrect. May simply remains a useful choice when a more formal or careful tone fits the situation.
Using May to Give Permission
May can also grant permission.
You may leave when you are finished.
Students may use calculators for this section.
Guests may enter through the side door.
You may take one copy.
This pattern is especially common in formal instructions, rules, policies, and situations where someone has authority to grant permission.
Using May Not to Refuse Permission
May not can mean that something is not permitted.
Visitors may not enter this room.
Students may not use phones during the examination.
You may not remove these documents from the building.
Employees may not share their access cards.
In these sentences, may not means are not allowed to.
The meaning is prohibition rather than uncertainty.
May Not Can Also Express Possibility
May not has another meaning.
It can mean that something possibly will not happen or possibly is not true.
Sofia may not attend the meeting.
This can mean that perhaps Sofia will not attend.
The repair may not be finished today.
We may not have enough chairs.
Liam may not know about the change.
Compare:
Visitors may not enter.
In a rule, this means entering is forbidden.
Maya may not enter the competition this year.
Depending on context, this could mean either that she is not permitted to enter or that perhaps she will not enter.
The surrounding sentence usually makes the intended meaning clear.
Does May Not Have a Contraction?
In standard modern English, may not is normally written in full.
The store may not open today.
A contraction such as mayn’t is not part of ordinary modern standard usage.
This differs from modal negatives such as:
can’t
couldn’t
shouldn’t
won’t
Questions with May
When may forms a question, it comes before the subject.
May I sit here?
May we begin?
May I speak to Noah?
You do not normally use do, does, or did with modal may.
Not:
Do I may leave?
For ordinary modern English, questions beginning with May I…? or May we…? are especially associated with permission.
May I…? Is Different from Asking Someone Else to Do Something
May I…? asks whether the speaker has permission to act.
May I open the window?
But if you want another person to open it, may is not normally the natural request modal.
Instead of:
May you open the window?
say:
Can you open the window?
Could you open the window?
Would you open the window?
This distinction prevents a common confusion between asking permission to act and asking someone else to act.
Using May to Express a Wish or Hope
May can introduce a formal wish, hope, blessing, or similar expression.
The pattern usually begins with may:
May you succeed in everything you do.
May your journey be safe.
May the new year bring you happiness.
May they enjoy many years together.
This use is more formal, ceremonial, literary, or traditional than ordinary possibility statements.
It is still common in greetings, speeches, blessings, and special occasions.
May Well
May well means that something is quite possible, reasonable, or unsurprising.
The project may well take longer than expected.
She may well refuse the offer.
This may well be our best option.
The delay may well continue into tomorrow.
Well strengthens the sense that the possibility is plausible.
It does not assign an exact probability.
May … But
May can acknowledge one point before introducing a contrasting point with but.
The apartment may be small, but it is comfortable.
His explanation may sound convincing, but several questions remain.
The task may take time, but it is worth doing carefully.
The route may be longer, but it is much quieter.
The speaker accepts that the first statement may be true while emphasizing a different point afterward.
This pattern is common in argument, discussion, and careful writing.
May As Well
May as well is an established expression meaning that a course of action is reasonable because there is little reason to choose otherwise.
We may as well leave now.
You may as well take an umbrella.
Since everyone is here, we may as well begin.
The bus is delayed, so I may as well walk.
This expression has a different meaning from ordinary possibility with may.
It does not simply mean that the action is uncertain.
May Want To
May want to can introduce a suggestion in a careful, indirect way.
You may want to save a copy before closing the file.
You may want to check the opening hours first.
The team may want to reconsider the deadline.
You may want to bring a jacket.
This is not the same as granting permission.
The speaker is gently suggesting that an action could be useful.
Might want to is also very common for tentative suggestions.
May vs. Can in Sentences
Both may and can can be used for permission.
May I use this chair?
Can I use this chair?
Both are standard.
May often sounds more formal, while can is extremely common in everyday speech.
Their possibility uses are not always the same.
Accidents can happen.
This describes a general possibility.
An accident may happen if the road remains icy.
This presents a particular outcome as possible.
So the old rule that can only means ability and may always means permission does not describe modern English accurately.
May vs. Might
For present and future possibility, may and might often overlap.
The train may be late.
The train might be late.
It is too rigid to teach may = more likely and might = less likely as a fixed rule.
Their differences become clearer in contexts such as permission, hypothetical situations, tentative suggestions, and reported speech.
Those distinctions are covered in detail in may vs. might.
Where May Appears in the Verb Phrase
As a core modal, may comes before the next verb in its base form.
Simple:
may leave
Progressive:
may be leaving
Passive:
may be invited
Perfect:
may have left
Perfect progressive:
may have been waiting
Perfect passive:
may have been invited
These patterns show that may does not always stand directly before the main lexical verb. Other auxiliaries such as be and have can appear between them.
The broader rules are explained in modal verbs in English.
Can May Be Used with Another Modal Verb?
In standard English, two core modal verbs do not normally appear directly together.
Correct:
We may need more time.
Not:
We may might need more time.
When two modal ideas need to be combined, English usually uses another type of expression.
We may have to wait.
Here, may expresses possibility and have to expresses necessity.
She may be able to attend.
Here, may expresses possibility and be able to expresses ability.
50+ Sentences Using May
The examples below are grouped by meaning so you can see how may changes with the structure around it.
May for Present Possibility
- The manager may be in a meeting.
- This key may belong to Emma.
- Noah may know where the files are.
- The problem may be more complicated than it looks.
- Someone may have the information we need.
- The answer may depend on the final results.
May for Future Possibility
- The concert may start late.
- We may visit Boston in October.
- The company may hire more staff next year.
- Temperatures may fall below freezing tonight.
- Ava may stay for another week.
- The schedule may change before Friday.
May with Ongoing Activities
- Ethan may be driving home now.
- The children may be playing in the garden.
- Sofia may be preparing dinner.
- The technicians may be testing the new system.
- Leo may be waiting near the entrance.
- We may be traveling when you call.
May for Past Possibility
- The courier may have delivered the package next door.
- Maya may have misunderstood the instructions.
- Daniel may have taken an earlier flight.
- I may have forgotten to lock the door.
- The storm may have damaged the roof.
- Priya may have seen the message already.
May in Passive Structures
- The event may be canceled if the weather worsens.
- Your request may be approved tomorrow.
- The road may be reopened this evening.
- Additional fees may be charged.
- The document may have been misplaced.
- The room may have been reserved for another group.
May for Asking Permission
- May I take this seat?
- May I speak with the manager?
- May we start a few minutes early?
- May I use your charger?
- May I ask one more question?
- May we come back tomorrow?
May for Giving or Refusing Permission
- You may leave after the presentation.
- Guests may use the lounge until midnight.
- Students may bring one page of notes.
- Visitors may not enter the laboratory.
- Employees may not copy confidential records.
- You may choose either option.
May in Wishes
- May your new home bring you happiness.
- May you enjoy every moment of your trip.
- May the best team win.
- May your efforts be rewarded.
- May peace return soon.
- May all your plans succeed.
Other Useful Patterns with May
- The idea may well work.
- We may as well wait inside.
- You may want to check the address before leaving.
- The proposal may sound simple, but it requires careful planning.
- There may be another explanation.
- We may have to postpone the trip.
- Olivia may be able to help us tomorrow.
- The delay may not affect the final deadline.
A Quick Guide to Using May
Use may + base verb for a present or future possibility:
The plan may change.
Use may be + -ing for a possible ongoing activity:
She may be working.
Use may have + past participle for an uncertain earlier event:
He may have forgotten.
Use May I…? to ask permission:
May I come in?
Use subject + may + verb to grant formal permission:
You may begin.
Use may not carefully because it can mean either possibly not or not permitted:
He may not attend.
Visitors may not enter.
Use sentence-initial May for a formal wish:
May you have a wonderful year.
And remember that may is not simply a “formal version of can” or a “more likely version of might.” Its meaning depends on the complete sentence.
May is a core modal verb with several important uses. It can express present or future possibility, ask for or grant permission, describe uncertain past events with may have, and introduce formal wishes.
It also appears naturally in longer structures such as may be waiting, may have been delayed, may well, and may as well. Once you recognize these sentence patterns, the different meanings of may become much easier to identify from context.
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