This document discusses the auxiliary verb "should" and its various uses. Should is used to give advice or recommendations, talk about obligation, and indicate probability or expectation. It is an invariable verb that is always followed by the bare infinitive (infinitive without "to"). Should can express giving advice or opinions, obligation/duty/correctness, and likelihood or expectation of something occurring. Examples are provided for each use case. Exercises are also included to practice using should and shouldn't correctly.

2. SHOULD
Should is an auxiliary verb, a modal
auxiliary verb. We use should mainly
to:
• give advice or make recommendations
• talk about obligation
• talk about probability and expectation

3. STRUCTURE OF SHOULD
subject + should + main verb
The main verb is always the bare infinitive
(infinitive without "to").
Notice that:
Should is invariable. There is only one form
of should.
The main verb is always the bare infinitive.

4. USES
should: Giving advice, opinions
We often use should when offering advice or opinions (similar to ought to):
• You should see the new James Bond movie. It's great!
• You should try to lose weight.
• John should get a haircut.
• He shouldn't smoke. And he should stop drinking too.
• What should I wear?
• They should make that illegal.
• There should be a law against that.
• People should worry more about global warming.

5. should: Obligation, duty, correctness
Another use of should (also similar to ought to) is to indicate a kind of obligation,
duty or correctness, often when criticizing another person:
• You should be wearing your seat belt. (obligation)
• I should be at work now. (duty)
• You shouldn't have said that to her. (correctness)
• He should have been more careful.
• Should you be driving so fast?

6. should: Probability, expectation
We use should to indicate that we think something is
probable (we expect it to happen):
• Are you ready? The train should be here soon.
• $10 is enough. It shouldn't cost more than that.
• Let's call Mary. She should have finished work by
now.

7. EXERCISES: SHOULD OR SHOULDN`T
1)If it´s rainy you __________ take an umbrella.
2)Tom __________ eat so many lollipops. It´s bad for his teeth.
3) a) __________ I drink hot tea if I have a sore throat?
b) Yes, you __________ .
4) They have a test tomorrow. They __________ go to the cinema .
They __________ stay at home and study!
5) Children __________ eat lots of vegetables but they __________ eat lots of
sweets.
6) I have a party tonight. What __________ I wear? A dress or a pair of trousers?
7) The doctor said: "_ You __________ eat healthy food. You __________ eat fast
food. You __________ watch so much TV. You __________ walk 1 hour a day.
You __________ drink fruit juice and water. You __________ drink wine or beer

8. SHOULD OR SHOULDN’T
1. You __________ be so selfish.
2. I don't think you __________ smoke so much.
3. You __________ exercise more.
4. I think you __________ try to speak to her.
5. You are overweight. You __________ go on a diet.
6. Where __________ we park our car?
7. You __________ never speak to your mother like
this.
8. The kids __________ spend so much time in front of
the TV.
9. I __________ tell her the truth or should I say
nothing?
10. I think we __________ reserve our holiday in advance

9. CORRECT THE MISTAKES
• You should to stop smoking.
• You ought visit your grandparents more
often.
• Do I ought to call her and apologise?
• He should have save some extra money for
the holiday.
• What I should do about the neighbours?
• You should eat not so much chocolate.
• You ought have to finished the report by
now.
• You should have not told him the secret.

10. REWRITE THE SENTENCES – DON`T CHANGE
THE MEANING
My physician advised me to watch my weight.
(OUGHT)
I'm very angry you didn't tell me you were getting
married. (SHOULD)
Thank you for doing the washing-up!
(SHOULDN'T)
It was a bad idea to take that turning.
(SHOULDN'T)
Your duty is to get to your office on time. (OUGHT