3. Put in should, shouldn't, must or mustn't.

1. You .................... always switch electrical appliances off when you are not using them.

2. Small children .................... watch violent programs on TV.

3. In Britain, before you start using a new electrical appliance, you .................... put the right kind of plug on.

4. When you put a plug on, you .................... be careful to put the wires in the right places.

5. You .................... touch electrical appliances when you are in the bath.

6. When you move into a new house or flat, you .................... check the electrical wiring.

7. You .................... plug too many things into the same socket.

8. You .................... wash white and coloured clothes separately.

9. You .................... clean out the fridge from time to time.

10. You .................... let the iron get too hot if you are ironing silk.

11. You .................... turn your radio up loud at night.

12. In Britain, you .................... buy a licence every year if you have a TV.

4. Complete the sentences with have to and should. Use the correct tense form.

1. I’m sorry I’m late. I __________ go to the dentist’s. I had a terrible toothache.

2. “I failed to pass my driving test.” – “Don’t worry. You __________ try again.”

3. Sorry, I’m leaving. Tomorrow I ____________ get up early.

4. My husband __________ travel a lot in his job.

5. I think you _________ stay in bed for a couple of days more. You are still sneezing and coughing.

6. At the office I ________ wear a suit and a tie.

7. “I’ve lost my wallet.” – “Really? You __________ be more careful!”

8. I _________ wear glasses. I don’t see well.

9. I don’t think you ___________ invite him to the party. He is such a bore!

10. You ___________ tell her about it.

Should and Ought to. Advice and criticism.

We often see people doing things we consider wrong, and we want to advise them, or talk critically about them to others. For example:

You should work harder.

He shouldn’t drive so fast.

You ought to be more polite.

They ought not to sell these.

There is no difference in meaning, although should is perhaps a little more common, and ought to a little more emphatic.

5. Look at the pictures. Beside each one, write something you would say to the person, and something about the person. Use either should/shouldn’t or ought/ought not to.

1.

He is too fat.

You shouldn’t eat so much.

2.

He ____________________

You ___________________

3.

He ____________________

You ___________________

6. Think of three things that people say to you, criticizing you.

1. My dentist says I shouldn’t eat so many sweets.

2. ____________ says I _______________________ .

3. ____________says I ________________________ .

4. ____________ says I ________________________ .

7. Now you can criticize somebody you know!

1. Our teacher ought not to give us so much work!

2. ________________________________________ .

3. _________________________________________ .

4. _________________________________________ .