# Probability

Level: beginner

## Possibility

We use may, might and could to say that something is possible, but not certain:

They may come by car. (= Maybe they will come by car.)
They might be at home. (= Maybe they are at home.)
If we don't hurry, we could be late. (= Maybe we will be late.)

We use can to make general statements about what is possible:

It can be very cold here in winter. (= It is sometimes very cold here in winter.)
You can easily get lost in this town. (= People often get lost in this town.)

Be careful!

We do not use can to talk about specific events:

A: Where's John?
B: I'm not sure. He may/might/could be
(NOT can) in his office.

Notice the difference in meaning between can and may/might/could:

That dog can be dangerous.
(= Sometimes that dog is dangerous. I know.)

That dog may/might/could be dangerous.
(= Perhaps that dog is dangerous. I don't know.)

can and may/might/could

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Level: intermediate

We use may have, might have or could have to make guesses about the past:

I haven't received your letter. It may have got lost in the post.
It's ten o'clock. They might have arrived by now.
Where are they? They could have got lost.

We use could to make general statements about the past:

It could be very cold there in winter. (= It was sometimes very cold there in winter.)
You could easily get lost in that town. (= People often got lost in that town.)

could and could have

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## Impossibility

Level: beginner

We use can't or cannot to say that something is impossible:

That can't be true.
You cannot be serious.

Level: intermediate

We use can't have or couldn't have to say that a past event was impossible:

They know the way here. They can't have got lost!
If Jones was at work until six, he couldn't have done the murder.

## Certainty

Level: beginner

We use must to show we are sure something is true and we have reasons for our belief:

It's getting dark. It must be quite late.
You haven’t eaten all day. You must be hungry.

We use should to suggest something is true and we have reasons for our suggestion:

It's nearly six o'clock. They should arrive soon.

Level: intermediate

We use must have and should have for the past:

They hadn't eaten all day. They must have been hungry.
You look happy. You must have heard the good news.
It's nearly eleven o'clock. They should have arrived by now.

Probability 1

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Probability 2

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Probability 3

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Probability 4

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Probability 5

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Soumis par mido74 le mer 13/03/2013 - 02:56

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Soumis par Aleksa49 le jeu 07/02/2013 - 16:32

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Soumis par gaurav1994 le jeu 07/02/2013 - 04:44

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Soumis par Snowburguer le mar 05/02/2013 - 18:27

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Please, can someone help me, I didn't understand.

Soumis par Hava143 le mar 22/01/2013 - 16:48

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Hi every one I have troubles with exercises,I got an iPad and I can't do exercises either see all presentation..I'll appreciate your help

Hello Hava143!

I'm afraid that the iPad doesn't use a program called Flash, which you need to play our games. We are changing our exercises to a new format, called HTML 5, which can be used on the iPad - but this will take some time.

Remember, many of our pages have downloadable support packs that will let you see the exercises that way.

Regards

Jeremy Bee

The LearnEnglish Team

Soumis par bengachouch ab… le lun 10/12/2012 - 17:36

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hello,i am abdel hamid , thank you for the session.

I need more about how can i be able to get motivation for speaking well english , despite i have been  studying at university .

Soumis par souci le jeu 22/11/2012 - 20:32

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Hi,I'm a new member .

looking forward to a better English. what's the best and easiest way for that

Thank you very much

Hi Souci,

Welcome to LearnEnglish! I don't believe there is one best way for everyone to learn English. Firstly, you have to think about why you want to learn it and which skills are most important to you. Someone who wants to write essays in English needs to study in a different way from someone who just wants to speak English to hotel staff on holiday. So, what are your goals?

Best wishes,

The LearnEnglish Team

Soumis par bengachouch ab… le jeu 22/11/2012 - 19:21

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I have registred my self as new person to be learn english well, so how can i study?

Soumis par itssofunny-57 le mer 25/07/2012 - 11:50

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Soumis par blasido le jeu 07/06/2012 - 22:50

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Soumis par tores11 le jeu 12/04/2012 - 00:05

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hello,

i thank  the team for making this program available  for everybody. i want really learn English, but i have always some difficulties in conjunctions. i wonder if u can give some advices.

thank u

Soumis par Catchraja le mar 10/01/2012 - 08:26

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Regards,

Raja