1. Unit 15 Secondary Specialized School English Book 1  Drill:   Prohibition and warnings Desiner: Yu Yong Qin ( 于永琴 ） Yan Cheng Agriculture School 2002. 12. 1

2. You must help others when they are in trouble.

3. When the telephone rings, I must answer it.When the telephone rings, I must answer it. When you get up, you must wash your face.When you get up, you must wash your face. 1. Look and say:

4. When you feel hungry, youmusteat something.When you feel hungry, you must eat something., yougo to bedWhen you feel tired, you must go to bed.

5. When you are ill, you must go to see a doctor.When you are ill, you must go to see a doctor. When you are riding a bike in the street, you must be very careful.When you are riding a bike in the street, you must be very careful.

6. When you cross the road, you must look carefully.When you cross the road, you must look carefully.

7. When the traffic lights are red, the traffic must stop. Then you can cross. It `s safe.When the traffic lights are red, the traffic must stop. Then you can cross. It `s safe. When the traffic lights are green, the traffic can go. Then you must wait. It`s dangerous to cross.When the traffic lights are green, the traffic can go. Then you must wait. It`s dangerous to cross. When the traffic lights are flashing orange, you must wait. Because the traffic is changing. If you cross the road, it`s very dangerous.When the traffic lights are flashing orange, you must wait. Because the traffic is changing. If you cross the road, it`s very dangerous.

11. Exercises:Exercises: Whenmust 1. When you cross the road, you must look carefully. When must 2. When the traffic is moving, you must wait. When must 3. When the traffic lights are green, you must stop. Whenmay 4. When the traffic lights are red, you may cross the road.

12. When must 5. When the policeman says `stop`, you must stop. When must. 6. When there`s a lot of traffic, you must be more careful. When may. 7.When you are not careful on the road, a car may hit you.

13. Model: When you are ill, you must see a doctor. If you are ill, you must see a doctor. 1. you cross the road, you must look carefully.WhenIf 2. the traffic is moving, you must wait. WhenIf 3. the traffic lights are green, you must stop. WhenIf

14. 5. the policeman says `stop`, you must stop. 4. the traffic lights are red, you may cross the road.WhenIf WhenIf 6. there`s a lot of traffic, you must be more careful.WhenIf. 7. you are not careful on the road, a car may hit you.When If

15. (B) If you are a driver, what things must you pay more attention?

16. [A] [A] When the traffic lights are red, you must stop. [B] [B] Don`t drive after you drink wine. [wain] n. 酒 [C] [C] When you drive, you must take the safety belt. [ `seifti belt] n. 安全带 [D] [D] When the policeman says `stop`, you must stop. [E]. [E] Don`t drive too fast. [F] [F] When you are tired, you mustn`t drive any longer. [G]. [G] Watch the speed.

17. : 3 ， Look,listen and learn: You must be more careful. That car nearly hit you! I wanted to get my ball. Well, you mustn`t play on the road. It`s dangerous. A car may hit you. I`m very sorry. I won`t do that again. It doesn`t matter. That`s all right. Thank you.

18. 4.Language Points: (1) (1) nearly adv. 几乎 adv. 几乎 eg. He is nearly sixty. eg. He is nearly sixty. (2) (2) colour n. 颜色 v. 涂 n. 颜色 v. 涂 eg. What colour is it ! eg. What colour is it ! Please colour it red. Please colour it red.

19. (3) It`s too dangerous to cross. too... to... 太... 以至于不能... 太... 以至于不能... eg. He is too young to work. He is too old to climb that hill. He is too old to climb that hill. The basket is too heavy to carry. The basket is too heavy to carry. She is too busy to write to you often. She is too busy to write to you often.

20. (4) If there is a lot of traffic, you must wait. traffic [u] 交通 a lot of much a lot of much

21. Summary:Summary: When / Ifmust 1. When / If you cross the road, you must look carefully. When / If must 2. When / If the traffic is moving, you must wait. When / If must 3. When / If the traffic lights are green, you must stop. When / If may 4. When / If the traffic lights are red, you may cross the road.

22. When / If must 5. When / If the policeman says `stop`, you must stop. When / If must. 6. When / If there`s a lot of traffic, you must be more careful. When / If may. 7.When / If you are not careful on the road, a car may hit you.

23. Homework:Homework: ä Do Ex2 and Ex3 of Wb L89.