Module5 A Trip Along the Three Gorges Function 外研版必修4

Module5 A Trip Along the Three GorgesPeriod 3 Function--Talking about obligation, permission and prohibition■Goals ● To learn to talk about obligation, permission and prohibition ■ProceduresStep 1: Summing up ways to talk about obligation, permission and prohibitionProhibition/Permission/ObligationThe modal verbs can/should/must/have to/need to/ be supposed to/ be allowed to and their negative forms can be used to express these functions.Prohibition ObligationNo obligationPermissionnot supposed to supposed to shouldn’tshould need todon’t need to have todon’t have to can’t canmustn’tmust not allowed to allowed to Step 2: Making sentences expressing obligation, permission and prohibition1. You have to be seventeen to drive in this country. 2. I must remember to lock the door. 3. Must I pay for the coffee?4. Do I have to wear a uniform?5. I don’t have to get up early. 6. We don’t have to wear a uniform. 7. You must come to my party. Everyone’s going to be there.8. I’m sorry but you have to wear a seat belt in the back seat of cars now.9. You’ve got to stop wasting your money.10. If we’re going to work together, I need to know about your background and experience.11. Drivers must not exceed the speed limit. 12. You mustn’t blame yourself. It’s not your fault.13. You don’t need to wear a uniform, but you can if you like.14. You needn’t tell me your phone number if you don't want to. 15. We had to wait half an hour on the platform because the train was delayed. We needn’t have hurried after all.16. Can I use the phone, please?17. In Spain, you can’t leave school until the age of 16.18. You are allowed to buy cigarettes when you are 18.19. We were only permitted to take photographs in certain places. 20. My parents let me stay out late at weekends 用心 爱心 专心 125 号编辑 1