4. NegativeInterrogativeMeaning can can not = can’t can I / he sing? poder/ ser capaz could couldn’tcould you..? poder/ ser capaz may may notmay I …?poder must don’t have to must I …?ter de/que dever ( suposições) mustn’tser proibido should shouldn’tshould I…?dever

5. He can skate quite well. Anyone can get a cold in winter. Can I read the letter you have just received? Can I help you? Ability Possibility Permission Offer help

6. Could – Request / Possibility / Permission / Past ability I could dance for hours when I was younger. We could go to the cinema tomorrow if we had a babysitter. Could I leave a little earlier today? Could you tell me the way to the post office? Ability Possibility Permission Requests

7. We may go to Greece for our holidays. We haven’t decided yet. May I come in? possibility permission

8. You __________ arrive on time from now on. You _________ park your car here. I think you _____________ worry about your baby. He is okay! must mustn’t don’t have to

9. You __________ be rude to your granddad. It’s so late! I _________be home by now. You __________ eat so much. shouldn’t should shouldn’t

10. Could you please close the window? Could I use the phone please? Could you speak slower? Can I eat a sandwich? Can I borrow your book? Can I drink water?

11. You must be careful! Railways ahead ! You mustn’t go this way! You can find a restaurant here. Only pedestrians can use this way. You can find a motorway ahead.

12. You ________ stop and give way. You ________ be careful. Crossroads ahead. You _______ find a camping site here. You _______ turn on your lights. Vehicles wider than 2m ________ go on. You ___________ stop or park here. must can must can’t mustn’t

13. 1.If you have permission, you may / must download music files. 2.The lawyer said that I shouldn’t / mustn’t copy music without legal permission. 3. At school, we may / should use cell phones in the hallways. 4. At school, we must / mustn’t use cell phones in class. 5. At the airport, there is a special area where we can /should rest.

14. 6.When I was in high school, we can / could leave the campus if we wished. 7. But, we can’t / couldn’t miss classes. 8. Can / Should you turn off that light? 9. I can /must talk to you right away. It’s urgent! 10. You can /should write to your family. They would like to know about you.