sandstorms-in-Asia知识学习课件

1、2021/3/141Book 3 Module 4 2021/3/1421. _ (沙尘暴沙尘暴) have been a major disaster for many Asian countries for centuries.2. A mass _(运动运动)has been started to solve the problem.3. Sandstorms are strong enough to move sand _(沙丘沙丘).5. The traffic moves slowly because the thick _(尘土尘土) makes it difficult to

2、see.6. The Chinese Central Weather Station can _(预报预报) a sandstorm some weeks before it arrives in Beijing.7. If you want to go out, youd better wear a _(面具面具).8. The _(力量力量) of the storm sometimes surprises people.SandstormscampaigndunesdustforecastmaskstrengthWords revision2021/3/143Please look at

3、 these pictures.How beautiful they are !2021/3/144But one day something happened .2021/3/1452021/3/146What is this natural disaster ?2021/3/147 blow bury frightening last (v) sandstorm2021/3/148There has been a _. It _ _ for ten hours and was very _. The wind _ the sand high around the houses, and s

4、ome cars were almost completely _ by the sand. sandstorm lasted /has been blowingfrighteningwas blowingburiedhas blow bury frightening last (v) sandstorm2021/3/149Check the meaning of these words and discuss which statements are true.dig earthquake protect sign the Pacific Ocean1 Sandstorms begin in

5、 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 from Asia have blown across the Pacific Ocean to America.5 Sandstorms cant be prevented.6 The inland region has more sandstorms than the one near the sea.2021

6、/3/14102021/3/1411Northwestern China _ _ _ strong winds and sandstorms since Monday. The condition is _ to _ as cold air is moving southward. The Xinjiang vigor Autonomous Region has already been _. Weather authorities say Inner Mongolia, Ningxia and the provinces of Gansu, Shanxi and Shanxi will se

7、e rain and _ drops of temperature. Northern China many have sandstorms again.has been experiencingexpectedspreadaffectedsharp2021/3/1412 A asks and B answers according to the photo 1 what is happening?2 what is the cyclist wearing and why? 3 what do you think happens to traffic in this situation? Wh

8、y?4 What do you think experts advise people to do in this situationThere is a sandstorm blowing. Theyre wearing masks and glasses to protect themselves. It moves very slowly. Because it is not clear to see everything on the road and people must take great care.Stay at home.2021/3/1413Skimming (略读) 方

9、法指导方法指导1. 1. 浏览标题浏览标题 2. 2. 读首段读首段, ,抓中心。抓中心。3. 3. 浏览其他段首末句。浏览其他段首末句。4.4.最后读结尾段。最后读结尾段。Fast-readingRead fast and try to find the main idea of each paragraph2021/3/1414Fast Readingthis article can be divided into three parts, give the main idea of each part?Part IPart IIPart (para 1) (para2-5) (para6

10、)Sandstorm is a_ in Asiathe_ description causeseffectssuggestionof sandstormmajor disasterMeasures to prevent sandstorm:_planting trees2021/3/1415introductionSandstorms are strong, dry _ carrying _,a _ _ in Asia Main placesCauseInfluenceSuggestionMeasures Desertification :_ changes ;_ trees;_ grassa

11、n _sky, strong_, city in a thick, brown-yellow _move slowly, difficult to see and breatheadvisenot to go out , wear a mask orangewindsclimate cut downdig updustDetailed readingmajor disasterCentral Asia, Central Africa, North America, Australiaplant more trees12sandwinds2021/3/1416Para1. Para2. 1Par

12、a3. 1Para4. Para5. Phrases2021/3/1417Para1. try many ways to solve this problems for centuries a mass campaignPara2. as a child be caught in Para3. appear to have done as a result of cut down trees dig up grassPara4. wake up to an orange sky make it difficult to seePara5. arrive in /at surprise peop

13、le advise sb. not to do sth wear a maskPara6.prevent(from) doing, stop(from) doing, keepfrom doing2021/3/1418 The four main places in the world( where there are sandstorms) are Central Asia, North America, 括号中的句子是什么从句括号中的句子是什么从句?( ) A. 地点状语从句地点状语从句 B.定语从句定语从句 C. 宾语从句宾语从句 D.主语从句主语从句BPara.1and 2Centra

14、l Africa and AustraliaSentences2021/3/14191.They are often so thick that you cannot see the sun, and the wind is sometimes strong enough to move sand dunes. para2 沙尘暴能见度经常很低以至于看不见太阳沙尘暴能见度经常很低以至于看不见太阳,风有时大的能够移动沙丘风有时大的能够移动沙丘. so- that- 引导结果状语从句引导结果状语从句2.Ren Jianbo, described a terrible sandstorm (that

15、) he experienced as a child in the desert. “To have been caught in a sandstorm was a terrible experience.” para2 任建波描述了他小时候在沙漠中经历的一次任建波描述了他小时候在沙漠中经历的一次沙尘暴沙尘暴,“那次被围困在沙尘暴中的经历真那次被围困在沙尘暴中的经历真是太可怕了是太可怕了.”2021/3/14203.It was the most frightening and the most (para2)dangerous situation (that) I have ever b

16、een in. 这是我经历过的最可怕最危险的情形这是我经历过的最可怕最危险的情形.4.This is a process that happens （when land becomes desert because of climate changes and because people cut down trees and dig up grass.） para3 这一进程是在气候变化以及人们肆意砍伐这一进程是在气候变化以及人们肆意砍伐森林和破会草皮从而导致土地沙漠化的情森林和破会草皮从而导致土地沙漠化的情况下发生的况下发生的. 2021/3/1421“traffic moves very

17、 slowly because the thick dust makes it difficult to see.”Para.4“traffic” means_ A. 交通交通 B. 车辆车辆B2021/3/14225The Chinese Central Weather Station can forecast a sandstorm some weeks before it arrives in Beijing, but the strength of the storm sometimes surprises people. (Para5)中国中央气象中心能在沙尘暴到达北中国中央气象中心

18、能在沙尘暴到达北京前几周预报沙尘暴京前几周预报沙尘暴,但沙尘暴威力但沙尘暴威力有时大得惊人。有时大得惊人。2021/3/1423 “Already the government has planted more than 30 billion and plans to continue planting for the next five yeas.” “Plans” 的词性是的词性是_ A. verb B. nounAand and 连接并列谓语连接并列谓语 “has planted has planted ” 和和“plansplans”plan to doplan to do为为 固定搭

19、配固定搭配Para.6讲解:2021/3/1424Listen and fill in the blanks Sandstorms have been a major disaster for many Asian countries for centuries. Sandstorms are strong , dry winds. The wind is sometimes _ _ _ move sand dunes. “_ _ _ _ _ a sandstorm was a terrible experience,” Ren Jianbo said. Desertification is

20、a process that happens because people _ _trees and _ _ grass. Traffic moves very slowly because the thick dust makes_ difficult _ _. So weather experts _ people _ _ go out . _ prevent it _nearer , the government is planting trees. 2021/3/1425appear to do/ to be doing/ to have done=It appears that -H

21、e appears to be talking to himself.=It appears that he is talking to himself.Sandstorms in China appear to have increased in recent years.=It appears that sandstorms in China have increased in recent years.It appeared that he was unhappy.=He appeared to be unhappy.appear不用不用进行时态进行时态2021/3/1426Talk a

22、bout sandstorms in pairs. You can ask and answer the following questions, and you may add some other details:What is a sandstorm?Where does it occur in the world/ in China?What is the causes of sandstorms?What should we do if sandstorms occur?How can we prevent sandstorms?Pair workDialogue2021/3/142

23、7cause :cutting down too many trees; desertification (沙漠化沙漠化); high temperature and little rain; serious air and water pollution; the growing population of the world; improper use of land; 1.We should plant more trees and grow more grass.2.Control air and water pollution.3.Build green fences along t

24、he desert. 4.Forecast sandstorms real time to prevent disaster.5.All countries should join hands to propose a plan in sandstorms control and prevention.Measures:2021/3/1428In order to protect our earth, many Green Movements have been held all over the world, what should we do? 2021/3/1429Never do ev

25、il deed no matter how trifling 勿以善小而不为勿以善小而不为,勿以恶小而为之勿以恶小而为之 2021/3/14302021/3/1431Writing世界环保日前夕世界环保日前夕,联合国教科文组织就如何处理城市垃联合国教科文组织就如何处理城市垃圾箱全世界中学生征文圾箱全世界中学生征文,请你以请你以Saving Our City 为题为题, 写一篇写一篇100词左右的短文。词左右的短文。提示提示:1. 城市污染的危害城市污染的危害:污染环境污染环境,有害健康有害健康2. 你所在城市的处理垃圾的方式你所在城市的处理垃圾的方式a.垃圾分类垃圾分类(sort) b. 报纸和玻璃的再利报纸和玻璃的再利用用 c.