MUSTN'T
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prohibition You mustn't play here.
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SHOULD / OUGHT TO
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advice You should / ought to exercise regularly.
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CAN / BE ABLE TO
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ability I can / I'm able to run for 1 hour (could/was able to in the past)
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MUST BE
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certainty You must be tired, you have been studying for 3 hours.
|
MIGHT / MAY
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future possibility Tim might/may have pizza tonight.
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MUST / HAVE TO
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necessity Students must/have to wear uniform to school.
|
CAN'T BE
|
impossibility This math exercise can't be that difficult!
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NEEDN'T / DON'T HAVE TO
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lack of necessity It's Saturday tomorrow, you needn't/don't have to wake up early.
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COULD / WOULD
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polite request Could you / Would you open the window?
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CAN / MAY / COULD
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permission Can / may / could I go to the toilet, please?
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EXERCISE:
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