Should is a modal to make suggestions to people in different circumstances, you use should when your suggestion is a positive one, and shouldn’t when it is not a good idea.

1. Should / Shouldn´t
This is a ModalWord
The negative form is made by adding the negative
paticle not, so using the contraction you have
Should not =Shouldn´t

2. Should / Shouldn´t
•It is a modal to make suggestions to people in different
circumstances, you use should when your suggestion is a
positive one, and shouldn’t when it is not a good idea.

3. Opinion
Suggestion
Advice
Espectation
Obligación
Duty
Correctness
Disagreement
Should / Shouldn´t
It is used to express:

4. Examples
Opinion
I need to define these words.
Ask your teacher,
she should know.
It´s too late and my parents
haven´t arrived yet.
Don´t worry, they should arrive
soon.
I want to go to the movies. Do
you want to come?
Sure, we should see a romantic
one

5. Examples
Suggestion
I´m having a party by
the beach next week.
What should I wear?

6. Examples
Advice
I´m not feeling well, I think I
have high temperature.
You should go to the doctor.
The new refrigerator doesn´t
work properly.
If I were you, I should complain to
the manager.

7. Examples
Expectation
Her fiancé will arrive in any
minute.
She should be nervous about it.

8. Examples
Obligation
We are traveling by plane.
You should be wearing your
seat belt.

9. Examples
Duty
It´s 10 o´clock in the
morning.
You should be at the office
already.

10. Examples
Correctness
Guess what? I am pregnant. You shouldn´t smoke then.

11. Examples
Disagreement
There is a dress code at this
university.
Why should I wear a uniform for
going to the university?

12. View this video and express your opinion

13. More
Examples