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5. We express advice with:

Should / ought to – e.g. You should walk more. (general advice; I advise you.)

had better – e.g. You'd better see your dentist, (advice for a specific situation; it is a good idea.)

5.1 Fill in: should, ought to or had better:

Jill: You 1) should ask someone to paint the house this year.

Laura: Yes. It's beginning to look a bit dirty. I can't really afford it, though. Do you think I 2)_________ try to get a loan?

Jill: No, you 3)_________ not. You might have a problem paying it back.

Laura: I 4)_________ do something about the roof as well. It leaks when it rains hard.

Jill: Really? You 5)_________ take care of it now or the ceiling will fall in!

Laura: Yes, you're right. I 6)_________ ring someone today and ask them to look at it.

5.2 Complete the sentences with verbs from the box, using 'd better:

Do, not forget, get, give, have, invite, not let, open, start, not tell

1. The plane's at six o'clock. You _________ packing, hadn't you?

2. I suppose I _________ up and put some clothes on.

3. You _________ the door and see who it is.

4. Tell Sheila she _________ my birthday this time!

5. We _________ Pat her camera back, hadn't we? She might need it.

6. We _________ John round soon; we owe him a meal.

7. I _________ some washing, or we won't have anything to wear.

8. You _________ Jane what's happening; she'll get too upset if you do.

9. You don't look well. You _________ some whisky and honey.

10. You _________ your father see that magazine – he'll kill you.

6. We express obligation or necessity with:

must (strong obligation or personal feeling of necessity) – e.g. We must follow the school rules, (obligation; I'm obliged to.); I must see a doctor soon. (I decide it is necessary.)

have to (external necessity) – e.g. I have to do my homework every day. (others decide it is necessary)

I've got to (informal; it's necessary) – e.g. I've got to leave early today.

Must is the Present Simple form. It borrows the rest of its tenses from the verb “have to”. To form questions and negations of have to we use do/does (Pres. S.) and did (Past S.).

He didn't have to do the shopping yesterday.

You don't have to go to school today.

Does he have to be at work on time?

6.1 Complete these sentences with must or have to (in the correct form):

1. It's later than I thought. I must go now.

2. Jack left before the end of the meeting. He had to go home early.

3. In Britain many children ____ wear uniform when they go to school.

4. When you come to London again, you ____ come and see us.

5. Last night Don became ill suddenly. We ____ call a doctor.

6. You really ____ work harder if you want to pass the examination.

7. I'm afraid I can't come tomorrow. I ____ work late.

8. I'm sorry I couldn't come yesterday. I ____ work late.

9. Paul doesn't like his new job. Sometimes he ____ work at weekends.

10. Caroline may ____ go away next week.

11. We couldn't repair the car ourselves. We ____ take it to a garage.