2. tornado hurricane Natural Disasters earthquake sandstorm lightning volcanic eruption

7. Let’s experience!

8. Vocabulary: blow bury frightening last sandstorm Therehas been a ________. It has______for ten hours and was very____________. The wind ________ the sand high around the house. and some cars were completely_____ by the sand sandstorm lasted frightening was blowing buried

9. Match the word with the definitions: 1. to ride a bicycle ______ 2. someone who knows a lot about a particular subject _______ 3. things that happen one after another, and have result _______ 4. someone who lives in particular town or country ________ 5. very small bits of dirt or earth, on the ground of in the air ________ citizen cycle (v.) dust expert forecast process situation survive cycle expert process citizen dust

10. 6. to continue to live after a difficult or dangerous situation or event ________ 7. to say what will probably happen ________ 8. everything that is happening at a particular time _________ citizen cycle (v.) dust expert forecast process situation survive survive forecast situation

11. FAST-READING Look at the photo on Page 32 & do the fast reading.

12. Answer the questions: 1. What is happening? There is a sandstorm blowing. 2. What is the cyclist wearing and why? They’ve wearing masks and glasses to protect themselves. 3. What do you think happens to traffic in this situation? Why? It moves very slowly. Because it is not clear to see everything on the road and people must take great care. 4.What do you think expert advise people to do in this situation? Stay at home.

14. 1. Sandstorms begin in desert areas. 2. Deserts are created by climate changes. 3. Deserts are also created because people cut down trees and dig up grass. 4. Sandstorms can ’ t be prevented. 5. The inland region has more sandstorms than the one near the sea. can

15. 1.Where are the four main places in the world where there are sandstorms? 2.Why does land become desert? 3.Can the Chinese Central Weather Station forecast a sandstorm? 4. How to prevent the desert coming nearer? 5. Find out the sentences of describing experiences caught in sandstorms. Para.2 Para.3 Para.5 Para.6 Para.2 & 6

16. adj. 主要的，重大的, 主修的 ② v. 主修，专攻 major problems 主要科目 ▼ majority n. 大多数 a/the majority of…… 的大多数 The students major in chemistry. The majority of boys was/were crazy about football. Language points Eg. 这些学生主修化学。 大多数男孩热衷于足球。 ① major major in sth. 主修 …… 1.Sandstorms have been a major disaster for many Asian countries for centuries. 主要问题 major subjects

17. 2. To have been caught in a sandstorm was a terrible experience. Yesterday they were caught in a heavy rain. 昨天他们遭遇了一场大雨. ★ be caught in the heavy rain/snowstorm/ sandstorm/traffic 突然遭到大雨 / 暴风雪 / 沙尘暴 / 交通拥挤 ★ be caught in sth. 被困在 … 中, 陷入 to have been caught in a sandstorm 不定式的完成时作主语 ★ be caught doing 被撞见做某事 ( 多指坏事 ) The thief was caught stealing money from the shop. 这个贼被撞见偷商店里的钱

18. 3. Sandstorms in China appear to have increased in recent years --- appear to: 似乎，好像 e.g. Do let your mother know all the truth. She appears ___ everything. She appears ___ everything. A.to tell B. to be told C. to be telling D. to have been told He appears to be sad today. 他今天似乎很悲伤。 appear 强调表面给人的印象，但事实不一定如此。 seem 暗示判断有一定的根据，比较接近事实。 look 强调视觉给人的印象。. My parents appeared to get angry easily yesterday. 我的父母昨天好像很容易生气

19. How to protect the environment? Discussion:

22. Finish the exercise at Activity 3, Page 33. Answers: 1._____ 2._____ 3._____ 4._____ bbaabbaa

24. Who wins? Let’s count…..

25. Homework: Composition 1 Designing a poster that encourages people to look after the environment. or Composition 2 Describe an experience of being caught in a sandstorm.