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Posted by : Yulia Permata Sari Tuesday, May 6, 2014

Possibility
Possibility is when there is a chance that something may happen or be true while probability is the likelihood of something happening or being true:
Example:
"Until yesterday, the project was just a possibility, but now it has become a real probability."
It is likely that it will happen.

Expressing Possibility
·         My grandmother may travel alone.
·         May be she will make the trip alone.
·         Perhaps she will visit London.
·         Possibly, she will go by plane.
·         It's possible that someone will meet her at the airport.
·         She might buy some presents for the family before she goes.
·         I suppose she might spend a lot of money on the presents.
·         There's a chance she'll like the city.
·         She will take an umbrella as it could rain heavily there..
·          
Expressing impossibility
·         No, it's impossible to repair that old Chevrolet.
·         Even a good mechanic can't possibly fix it.
·         We may not be able to travel by car.
·         There's no chance my father repairs it tomorrow.
There are several modal 
verbs used to show 
possibility.  They
are Might, May, Could, and 
Must.  All of these are 
different
ways to say maybe.

STRUCTURE

Modal Verb                             +         Base Verb
May/Might/Could/Must      +         Base Verb

Examples:

·         I may eat dinner at 7:00pm.
·         She might work late tonight.
·         They must be tired.

May
May shows possibility in the present or the future.

Present:        Where are my keys?  They may be in the car.
Future:          I may go to the party tonight.

May is formal and is often found in writing.

·         Side effects of this medication may include upset stomach
and fever.


Might
Might shows possibility in the present or future.
·         Where are my keys?  They might be in the car.
·         I might go to the party tonight.

Might is less formal than may, and is more common in
conversation


Could
Could shows that something is possible in the present or
future.

Present:        Where are my keys?  They could be in the car.
Future:          We could go to the party tonight.

Could shows options, or possibility.


Must
Must shows certainty, or the belief of certainty, from the
speaker.

Certain:     
·         Everyone is wearing a jacket.  It must be cold.     

Belief of certainty:     

·         He was running for 2 hours.  He must be tired.
    (Although it seems obvious, it is not a fact that the runner
    is tired.)


Have to
Have to shows certainty, or the belief of certainty, from
the speaker.

Certain:

·         Everyone is wearing a jacket.  It has to be cold.     

Belief of certainty:  

·         He was running for 2 hours.  He has to be tired.
    (Although it seems obvious, it is not a fact that the runner
    is tired.)

Have to is much less formal than must, and is common in
conversation.

Past Possibility

May, Might, and Could are all used to show possibility in the
past.

Modal Verb + Have + Past Participle

·         He might have brought the cake.
·         She may have gone home early.
·         They could have worked late.

Must can be used in the same way to show certainty in the
past.
·         He must have won the game.

Might Not vs. Could Not

Although Might and Could express possibility in a similar way,
the negative forms of Might and Could are different.

Might not shows that something probably is not true.

·         These books might not be the teachers.

Might not shows that something probably will not
happen in the future.

·         I might not go to the party tonight.

Could not shows that something is impossible.

·         This could not be the only book available.
·         She could not know who my friend is.  They have
·         never met.

Exercise
1. Sarry   :‘Do you think that we can finish this by today?’
    Tomy     : ‘I have no doubt that we can finish it in time.’
The underlined sentence means …
A.  agreement
B.   disagreement
C.  certainty
D.  uncertainty
E.  impossibility

2. Yato    : ‘are you sure to come to Yukine’s birthday tonight?’
    Hiyori  : i believe I can come.
The underlined sentence means …
A.  disagreement
B.   displeasure
C.  possibility
D.  uncertainty
E.   disappointed

3. Etty    :I’d like to go to the cinema tonight, will you join me?
   Charles : …. Its great.
A.   I don’t think I’ll go with you
B.   I have something to do.
C.   Oh really, but I don’t like it
D.   I think I have to see it
E.    Sure, I’m really looking forward to seeing it

4. Is it possible we win this race?
Alex     :.....
a. there is possibility of being the winner
b. probably, i’m not sure you go to the mall
c. i may be join too
d. i don’t know the rules
e. lets buy a car

5. Is there a chance that we’ll win the football match?
Alex     :...
a. i like football
b. lets watch it
c. Of course there is a chance to win
d. may be you can buy a ball
e. i am very confuse

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