高中英语：Module4SandstormsinAsiaPeriod1IntroductionReadingandVocabulary课件外研版必修(1).ppt

Module 4 Sandstorms in Asia Period 1 Introduction & Reading and Vocabulary文本研读课,. 根据汉语提示及课文语境写出正确的单词 1. The _(内地的; 内陆的)region has more _(沙尘暴)than the one near the sea. 2. Scientists have tried many ways to solve this problem and in China, a _(大量的; 大规模的) _(战 役; 活动)has been started to help solve it.,inland,sandstorms,mass,campaign,3. Sandstorms in China appear to have increased in recent years as a result of “_(土地的沙 漠化)”. 4. This is a _(进程; 过程)that happens when land becomes desert. 5. To be _(骑自行车)in s sandstorm is _(吓人的; 可怕的).,desertification,process,cycling,frightening,. 匹配词义 1. cut down A. 建议某人做某事 2. as a result of B. 在一个特定的时间 3. dig up C. 一个接一个地 4. wake up to D. 阻止做某事 5. in this situation E. 突然遭遇(风暴等) 6. be caught in F. 在这种情况下,7. prevent. . . (from)doing sth. G. 清楚地意识到 8. one after another H. 挖掘 9. at a particular time I. 由于 10. advise sb. to do sth. J. 砍倒 11. sweep away K. 清除 答案: 15. JIHGF 611. EDCBAK,. 阅读导引 1. 查阅有关沙尘暴的资料, 了解故事发生的背景。 2. 找出课文中描述沙尘暴的词汇和句型。,Step 1 Leading in Look at the pictures and fill in the blanks.,1. _is the2. _by which a piece of land becomes dry, empty, and unsuitable for growing trees or crops on. It is the main cause of a3. _, a kind of bad4. _which usually happens in 5. _and autumn. When a sandstorm comes, the 6. _blows strongly with7. _and sand. Sometimes trees are even 8. _down, and9. _moves very slowly. It is very10. _.,Desertification,process,sandstorm,weather,spring,wind,dust,cut,traffic,frightening,Step 2 Fast Reading Scan the passage and match each paragraph with its main idea. A. Sandstorms sometimes affect Beijing. B. Sandstorms do a lot of damage to people. C. The government plants trees to prevent sandstorms.,D. Sandstorms have been a major disaster for many Asian countries for centuries. E. Sandstorms in Asia. F. Sandstorms in China appear to have increased.,D,E,F,A,B,C,Step 3 Careful Reading . Read the text carefully and finish the following tasks. 1. When sandstorms happen, what will you wear if you go out? A. A hat. B. A coat. C. A mask. D. A tie.,2. How many kilometres is the desert away to the west of Beijing? A. 350. B. 250. C. 150. D. 200.,3. According to the text, we can learn that sandstorms . A. cause people to buy more masks B. are difficult to deal with C. are not dangerous but frightening D. will disappear within five years,. Sentence explanation. This is a process that happens when land becomes desert because of climate changes and because people cut down trees and dig up grass.,分析: that happens. . . 是定语从句, 修饰先行词 _。定语从句中有两个状语从句, 一个是_引 导的时间状语从句, 另一个是_引导的原因状语 从句。,process,when,because,句意: 这(沙尘暴)就是_ _而使陆地变成沙漠时的一个过程。,因为气候变化和人们砍伐树木、,挖掘草地,Step 4 Retelling Try to retell the main idea of the passage. Sandstorms have been a major1. _for many Asian countries for centuries. Scientists have tried many ways to2. _this problem.,disaster,solve,Sandstorms are strong, dry winds that carry sand. They are often 3. _thick that you cannot see the sun, and the wind is sometimes strong enough to move sand 4. _. The four mainplaces in the world 5. _ there are sandstorms are Central Asia, North America, Central Africa and Australia. Ren Jianbo described a terrible sandstorm he experienced as a child in the desert,so,dunes,where,“To 6. _ _ _ _ a sandstorm was a terrible 7._. ”he said. “It was the most 8. _ and the most dangerous 9. _ Ive ever been in. You just had to hope youd10. _. I thought I was going to disappear under the sand. ”,have been caught in,frightening,situation,survive,experience,Step5 Discussion What should people do to protec