Why isn't he here? (miss the bus) (may or might)
He might have missed the bus.
He may have missed the bus.
No one is waiting at the bus-stop. (already pass) (may or might)
It might have already passed.
It may have already passed.
He didn't come to our party last night. (not want to)
He might not have wanted to.
He may not have wanted to.
No one has answered the door. (go out) (may or might)
They might have gone out.
They may have gone out.
Why didn't he explain? (not know) (may or might)
He might not have known.
He may not have known.
He didn't seem surprised when I told him. (already know) (may or might)
He might have already known.
He may have already known.
I haven't seen my neighbors for over a month now. (move house) (may or might)
They might have moved house.
They may have moved house.
I can't understand why they didn't call on us. (not have time (may or might)
They might not have had time.
They may not have had time.
They couldn't hear us. (listen to the radio) (may or might)
They might have been listening to the radio.
They may have been listening to the radio.
Perhaps you made a mistake. (may or might)
You might have made a mistake.
You may have made a mistake.
Trains will possibly be subject to delay. (may or might)
Trains may be delayed.
Trains might be delayed.
It's possible that he won't turn up at all. (may or might)
He may not turn up at all.
He might not turn up at all.
Accept his offer now. It's just possible that he will change his mind. (may or might)
He may change his mind.
He might change his mind.
He didn't come. Perhaps he didn't get my letter. (may might)
He might not have got my letter.
He may not have got my letter.
We shall possibly find that we cannot get accommodation.
We may possibly find that we cannot get accommodation.
We might possibly find that we cannot get accommodation.
He would have come perhaps if we had informed him.
He might not have come perhaps if we had informed him.
He may not have come perhaps if we had informed him.
He'll never pass. It would be advisable for him to give up. (may or might)
It might as well give up.
It may as well give up.
Perhaps the place will be full of people and won't see a thing.
The place may be full of people and won't see a thing.
The place might be full of people and won't see a thing.
You ... (can/may) lose your way tomorrow if you don't take a map.
can
may
I ... have misunderstood what he said.
will
That tree ... have fallen by itself.
cannot
must not
should not
He ... be working at this hour; that shadow ... be a burglar.
cannot - must
must not - may
should not - will
Her parents ... like being treated like that by her.
may not
What ... she have meant by that remark?
must
could
What on earth ... he have been thinking of?
You ... been crazy to behave like that!
must have
could have
That job ... be hard to do.
shouldn't
They ... go to tomorrow morning.
must not.
No matter how hard he ... try, he can't get it right.
should
No matter how hard he ... try, he couldn't get it right.
might
There must be lots of money in a job like that... there?
mustn't
can't
... it be marvelous to live in a lace like that?
Mustn't
Can't
He ... there, so I went on looking for him.
must have been
should have been
You ... be mad to say a thing like that!
As the children get home before their parents, they ... wait in the street until they arrive
have to
She .... leave home early these days.
has to
You ... read this book. Its' really good!
I can never remember the way. I ... ask a policeman.
(street-seller, pay)... taxes?
Do the street-seller have to pay taxes?
Do the street-seller must pay taxes?
Notice: in art gallery "All bags... be left at the des"; at a pretol station: "Engines ... be switched off", at the top of an exam paper: "Candidates ... write in ink"
She ... practice the guitar 4 hours a day
Her eyesight is getting worse; she ... wear glasses now.
Where there is a bus trike, people ... go on foot.
