1、tornadohurricaneNatural Disastersearthquake sandstormlightningvolcanic eruption第一頁，編輯于星期五：十一點 三十六分。第二頁，編輯于星期五：十一點 三十六分。第三頁，編輯于星期五：十一點 三十六分。第四頁，編輯于星期五：十一點 三十六分。Module 4 Sandstorms in Asia第五頁，編輯于星期五：十一點 三十六分。BCDANorth AmericaCentral AfricaAustralia Central Asia第六頁，編輯于星期五：十一點 三十六分。BCAInner Mongolia Gan

2、suXinjiang第七頁，編輯于星期五：十一點 三十六分。Fast reading:1. What are sandstorms?2. What are the places where sandstorms often occur in the world?3. What is desertification?4. Why do people wear masks in a sandstorm?5. What is the Beijing government doing to prevent the desert from coming nearer? 第八頁，編輯于星期五：十一點 三十

3、六分。Further reading: 1.Sandstorms are strong winds carrying _ through the air. A. dirt and mud B. rain and heat C. sand and dust D. cloud and snow 2.What do the experts advise people to do when a sandstorm arrives in the city? A. Dont go out B. Dont wear masks. C. Dont go to work as usual. D. Dont ri

4、de bicycles 3.The factors that cause land to be desert are _. A. cutting down trees B. digging up grass C. climate changes D. all of the above4. From the last paragraph, we know _. A. the government is taking measures to prevent sandstorms. B.the distance between the desert and the center of Beijing

5、 is only 250 kilometers. C. more than 30 million trees have been planted in Beijing . D. the government wont plant trees any more in the next five years第九頁，編輯于星期五：十一點 三十六分。Complete these sentences:1. Weather experts have f_ another big sandstorm in a weeks time.2. Its f_ to be outside in a sandstorm

6、.3. I was in a very big sandstorm some years ago. Luckily, everyone s_.4. Theres a lot of d_ on the floor. We need to sweep it away.5. Desertification is a long p_ that takes many years.6. Many Beijing c_ cycle to work.orcast(ed)righteningurvivedustrocessitizens第十頁，編輯于星期五：十一點 三十六分。frightening,orange

7、 sky, strong wind, thick dust, slowly第十一頁，編輯于星期五：十一點 三十六分。dirty, breathe, mask, cycling, traffic, etc.Question: How do sandstorms affect peoples life 第十二頁，編輯于星期五：十一點 三十六分。Discussion: What measures should we take to prevent sandstorms coming?第十三頁，編輯于星期五：十一點 三十六分。Homework:1. Find more information about sandstorms on the internet or other books and write a short pas