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modal verbs - Coggle Diagram
modal verbs
PROBABILITY/POSSIBILITY
may
might
take your umbrella, it might rain
I might go to the cinema
past forms
might have + past participle
where's Bob? I don't know he might have gone out
must
must have
should
could
PERMISSION
can
may
may I? = puis-je?
ABILITY
I can swim
OBLIGATION
must
= I decide it's obligation
I must call my brother this weekend
only present
(defective)
have to
you have to do your taxes every year
you have to wear seat belt
I had to / will have to / would have to
PROHIBITION
mustn't
can't
ADVICE
should
past
should have
I forgot, I should have told you
you should have bought it
NO OBLIGATION
don't have to
= you can if you want