OBLIGATION/POSSIBILITY
Which modal verbs do we use to express obligation?
Must and have to
Which modal verbs do we use to give advice?
Should and ought to
Which modal verbs do we use when we're certain about our deduction?
"Must" when we're certain something is true and "can't" when we're certain something is not true.
Which modal verbs do we use to express possibility?
Can, could, may and might
Which modals verbs do we use for permission?
Can, could and may
Which modal verbs do we use when we think something is true but we're not completely sure?
May, could and might
Choose the correct modal verb:
You (must/should/can) respect the traffic lights.
In the South of Spain, temperatures (might/can/must) get to 40 degrees in the summer.
You must respect the traffic lights.
In the South of Spain, temperatures can get to 40 degrees in the summer.
Choose the correct modal verb:
If you feel sick, you (should/may/could) go to the doctor
(You're talking to your boss): Can/Should/May I borrow your pen?
If you feel sick, you should go to the doctor.
May I borrow your pen?
Choose the correct modal verb:
(Someone knocks at the door in your house)
It may/must/can't be the deliveryman, my package is supposed to arrive today or tomorrow.
It may be the deliveryman, my package is supposed to arrive today or tomorrow.