7. Tell about your daily routines. Make a list of five things that you have to do every day.

Take out the list you created and rewrite the list using 'have to'.

Imagine you are the Third Officer (Second, Chief, Bosun, AB, etc) and think about what a person working in that rank has to do.

Begin by choosing a profession and having other students ask you 10 or 15 questions about what you have to do in this job. Questions can only be answered by 'yes', 'no' or 'sometimes'.

The student who guesses the name of your profession should be the next to be asked the 15 questions. You can also play the game in pairs.

Listed below are examples and uses of must / have to / mustn't / not have to

Examples	Usage
We have to get up early. She had to work hard yesterday. They will have to arrive early. Does he have to go?	Use 'have to' in the past, present and future to express responsibility or necessity. NOTE: 'have to' is conjugated as a regular verb and therefore requires an auxiliary verb in the question form or negative.

8. Choose the correct variant don’t have to (doesn’t have to ) or mustn't

1. You ________ smoke in a gas station.

2. You ________ pass a test to ride a bicycle.

3. You ________ open up the computer while it is plugged in.

4. Shops ________ sell cigarettes to children.

5. This bus is free! You ________ buy a ticket.

6. You ________ live in Canada to study at the University of Victoria. You can take a course by Internet.

7. In Canada, employers ________ discriminate against women or minorities. It's against the law.

8. You ________ buy the text book for this course -- you can borrow mine.

9. Canadians ________ get a visa to travel to the US.

10. You ________ be late for class, or the teacher will be angry.

11. It is forbidden. You ______ do that.

12. You ______ ask my permission. You can do what you want.

13. You ______ speak to the driver when the bus is moving. It's dangerous.

14. Help yourself to anything you want. You ______ask.

15. You ______ park here. There is a double yellow line.

16. Pay me back when you can. You ______ do it immediately.

17. It's optional. We ______ to go if you don't want to.

18. I'll tell you a secret. You ______ tell anybody else. Promise?

19. Whatever you do, you ______ click with the right mouse button or the program will crash.

20. Be on time. You ______ be late or we will leave without you.

21. He's a millionaire. He ______ work but he does because he enjoys it.

22. I like Saturdays because I ______ go to work.

23. This is very important. You ______ forget what I said.

24. It's very informal here. You ______ wear a tie unless you want to.

25. The train is direct. You ______ change trains.

26. In boxing, you ______ hit your opponent below the belt.

27. I ______wear a suit at work on Fridays. It's ‘dressing down day’.

28. In athletics, you ______ start before the gun is fired.

29. In bridge, you ______ look at other people's cards.

30. You ______ be mad to work here but it helps.

Need, needn't, and don't need to / don't have to

Need can be used as a modal verb (before a bare infinitive) or as an ordinary verb. Compare: e.g. You needn't speak so loudly. (= modal verb) She needn't come with us if she doesn't want to. (= modal verb) She's thirsty. She needs a drink. (= ordinary verb) Jim and Bob are here. They say they need to see you urgently. (= ordinary verb)

When it is a modal verb need is most commonly used in negative sentences, although it is sometimes also used in questions: e.g. Need you go home so soon? (or, more commonly Do you have to go...?) Need I say more? (or, more commonly Do I have to say...?) 

We can use either needn't or don't have to when we say that is unnecessary to do something: e.g. It would be good to see you, but you needn't (or don't have to) come if you're busy. You needn't (or don't have to) whisper. Nobody can hear us.

Compare these uses of needn't and don't need to.

To give permission not to do something we can use either needn't or don't need to:

e.g. You needn't cut the grass, I'll do it later. You don't need to cut the grass, I'll do it later.

To talk about a general necessity, we prefer don't need to:

e.g. You don't need to be over 18 to get into a disco.