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Unit 13 Language Study Word study & Modal Verbs

Unit 13 Language Study Word study & Modal Verbs. Yan Dang Mountain. No water, no life. Ability. What Properties does water have?. turn solid when frozen . Water can. give off gas when heated. dissolve gases and solids. Ability. What does he/she hope he/she can do?.

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Unit 13 Language Study Word study & Modal Verbs

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  1. Unit 13 Language Study Word study & Modal Verbs

  2. Yan Dang Mountain

  3. No water, no life

  4. Ability What Properties does water have? turn solid when frozen Water can give off gas when heated dissolve gases and solids

  5. Ability What does he/she hope he/she can do? She can perform ballet( 芭蕾 ). He hoped he could fly a plane. On Oct.15,2003, he was able to (× could) complete China’s first space flight.

  6. Ability What ability would you like to develop? I hope I can … I hope I am able to… I wish I could…

  7. Necessity What do you need to do in order to reach your ability? I must/should… I have (got) to … I need to…

  8. Ability Necessity I hope I can … I hope I am able to… I wish I could… I must/should… I have (got) to … I need to…

  9. Request Can you help solving problems? Could you help me with my problem?

  10. Permission The road signs indicate People may/can…

  11. Permission When a driver sees the road signs, he mustn’t/can’t…

  12. Necessity When a driver sees the road sign, he must/have (got) to/should…

  13. News report As many as 3000 million people throughout the world could face a water shortage by 2025 if the present situation continues. By then, the global population is expected to reach about 7.5 billion. Many big cities, including Beijing, Shanghai and Tianjin, will suffer severe water shortages, … • If it is true, what may or will happen in the future? • What should people do to solve the problem?

  14. Guessing • If it is true, what may or will happen in the future? Possibility A water shortage can/could … Lack of water may/might… Certainty If lack of water continues, people will/must/should…

  15. Suggestion • What should people do to solve the problem? People (We, Scientists,etc.) should/ought to/had better… Or We can/could/may …

  16. Possibility: Ability: Requests: Necessity: Certainty: Permission: Suggestions: Advice: can / could, may / might can / could, be able to can / could, will / would, would like must, have to, have got to, need must, will, should can / could, may / might could, may / might, shall should, ought to, had better

  17. Summary Modal Verbs can / could be able to Ability He can/could fly a plane. must/ have to /have got to/need We must protect water. Necessity He had to get special training. People can walk this way. can/could may/might/mustn’t Permission A driver mustn’t drive beyond the speed limit. Guessing (possibility /certainty) might/may/could /should/must /will/can Lack of water in the future may result in several problems. could/may / might shall/should/ought to had better Suggestion /Advice We had better use water for more than one purpose. can/could/will /would/would like Could you help me? /Would you like to help me? Request

  18. Situations 1.One of your best classmates is absent from class, and you care much about his or her absence. (guessing, ability, necessity, suggestion, etc.) 2. Your school carry out a ban on carrying a cell phone in the school campus. You and your classmates argue over this school rule. (permission, necessity, request, suggestion, etc.) 3. In your family, your parents have found the charges(费用) for water and electricity are rising these days. You are having a family meeting. (guessing, request, necessity, suggestion,etc.)

  19. Homework Finish grammar exercises on page 21 and page 98.

  20. Thank you for your attention!

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