With these presentation you have the most common modals to teach to your students. It includes examples and the effects of each modals. It will be of a awesome help for you and your students since they will see everything from it.

2. THINGS TO KNOW
 Modals are auxiliary verbs used to give a
judgement or interpretation about an action or state.
 Modals cannot be the main verb of sentences.
 After a modal you always have to use the base
form a the following.

3. WILL-SHALL (FUTURE)
 I will graduate in two years.
 I shall graduate in two years.
Contraction:
I’ll graduate in two years.

4. WOULD (CONDITIONAL)
I would love to visit New York.
-ía ending.

5. SHOULD-OUGHT TO (ADVICE AND
EXPECTATION)
 You should talk to your boss.
 He should be here by 9 o’clock.
 You ought to talk to your boss.
 He ought to be here by 9 o’clock.

6. MIGHT-MAY (PERMISSION AND POSSIBILITY)
 Permission.
May I borrow your pen?
You may leave the room.
 Possibility.
Where’s John?
He may be at the library.
He might be at the library.

7. CAN (ABILITY, POSSIBILITY, PERMISSION)
 Ability or possibility.
I can run very fast.
 Permission.
You can use my car tomorrow.
 Informal polite request.
Can I use your car tomorrow?

8. COULD (PAST OF CAN, SUGGESTION, POLITE
REQUEST, POSSIBILITY)
 Ability or possibility (in the past)
I could run very fast when I was a child.
 Possibility.
I could run very fast.
 Polite request.
Could I use your car tomorrow?
 Suggestion.
You could talk to your teacher.

9. MUST (STRONG NECESSITY, HIGH
PROBABILITY)
 Strong necessity.
I must register this asset today.
 High probability.
Ana must be studying.

10. NEGATIVES
 Add not after the modal.
 I can not run very fast.
 You should not talk to your boss.
 You could not talk to your teacher.
 I must not register this asset today.
 You may not leave the room.