Module 4 Sandstorms in Asia Introduction and Reading 課件 高中英語(yǔ)外研版必修三

1、Module 4 Sandstorms in AsiaIntroduction and ReadingTo learn about sandstorms in AsiaTo learn what cause the sandstormTo learn how to prevent the sandstormBeautiful worldTornado 龍卷風(fēng)Debris Flow 泥石流Drought 干旱Flood 洪水But someday, something happened!Look at the following pictures. What happened in these

2、pictures? Try to describe them.There is a sandstorm and the sky is yellow. We can hardly see anything.SandstormThe sand almost buries the cars.It is very frightening.What is a sandstorm? 沙塵暴(sandstorm)是指強(qiáng)風(fēng)把地面大量沙塵物質(zhì)吹起并卷入空中，使空氣特別混濁、水平能見(jiàn)度小于一百米的嚴(yán)重風(fēng)沙天氣現(xiàn)象。 Sandstorm is very frightening. When the sandstorm

3、 comes, the wind blows strongly with lots of sand, so that we can hardly see anything. Why are there many sandstorms every year? Its because people cut down more and more trees and forests have gone. As a result, lots of good land has become deserts.Look at the picture below. Complete the sentences

4、using the correct form of these words. There has been a _. It _ _ for ten hours and was very _. The wind _ the sand high around the houses, and some cars were almost completely _ by the sand. sandstorm has been blowingfrighteningwas blowingburiedhas lasted / blow bury frightening last (v.) sandstorm

5、Check the meaning of these words.dig earthquake protect sign the Pacific OceanNow work in pairs. Discuss these statements and decide which statement is false.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 u

6、p 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.1. What should you do in a sandstorm to protect yourself?2. Which do you think is more dangerous, an earthquake or a sandstor

7、m? Say why.3. Where in China do sandstorms begin?4. If you are in a desert, what is the first sign of a sandstorm?5. Have you ever been in a sandstorm? If yes, describe it to your partner.We shouldnt go out.We have to wear hoods, masks and glasses.Cars slow down and have to turn on headlight.What sh

8、ould we do in a sandstorm to protect ourselves: The cause of sandstorm cutting down too many trees; desertification (沙漠化); high temperature and little rain; serious air and water pollution; the growing population of the world; improper (不合適的) use of land; rapid spread of urbanization(都市化). Look at t

9、he photo. Answer the questions. 2. What is the cyclist wearing and why?1. What is happening? There is a sandstorm blowing. Theyre wearing hoods, masks and glasses to protect themselves.3. What do you think happens to traffic in this situation? Why?4. What do you think experts advise people to do in

10、this situation?It moves very slowly. Because it is not clear to see everything on the road and people must take great care.Stay at home.Match the words 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

11、a result _cycle expert citizen cycle (v.) expert forecast dust process situation surviveprocess4. someone who lives in a particular town or country _5. very small bits of dirt or earth, on the ground or in the air _6. to continue to live after a difficult or dangerous situation or event _citizendust

12、 citizen cycle (v.) expert forecast dust process situation survivesurvive7. to say what will probably happen _8. everything that is happening at a particular time _forecastsituation citizen cycle (v.) expert forecast dust process situation surviveDo you know the relation between natural disasters an

13、d human activities?Read the text (P32) quickly and answer the following questions.1. Why is it hard for people to see in sandstorms?2. How far is the desert from Beijing?Because of the thick dust.Only 250 kilometres away.Read and match the main ideas with each paragraph.Para.1Para.2Para.3Para.4Para.

14、5Para.6A. the description of sandstormsB. the influence of sandstorms to Beijing.C. the measures the government takes to prevent sandstormsD. Sandstorms have been a major disaster in Asia for centuries.E. the suggestions the weather experts give to peopleF. the cause of the sandstorms in the northwe

15、st China.Para.1Para.2Para.3Para.4Para.5Para.6Finish the information about sandstorms. Sand-stormsStrong and _ winds carrying sandsToo _ for people to see the sun, and strong enough to move sand dunes.Mainly in Central Asia, North America, Central Africa and _.Australia drythickFind these words in th

16、e passage. Choose the correct answer.1. sand dunes mean _ (a) plants growing in sand (b) sand hills2. affect means _ (a) to kill (b) to cause a changebb3. You wear a mask over your _ (a) face(b) body4. strength is the noun of _ (a) strong(b) Strange aaChoose the best answers.1.Sandstorms are strong

17、winds carrying _ through the air. A. dirt and mud B. rain and heat C. sand and dust D. cloud and snow2. 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 ride bicycles 3. The factors that cause land t

18、o 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 wont plant trees any more in five years B.the distance between the desert and the center of Beijing is only 250 kilometers C. more than 30 milli

19、on trees have been planted in Beijing D. the government is taking measures to prevent sandstormsRead the text and fill in the blanks.General information about sandstormsDefinitionStrong, 1. _ winds that carry sandPlaces they often occurIn 2. _, North America, Central Africa and AustraliaSandstorms i

20、n ChinaReason for their increasingDesertificationdryCentral AsiaSandstorms affecting BeijingA(n) 3. _ skyStrong winds covering the city in a(n) 4. _, brown-yellow dustThe storms sometimes continuing all day Traffic moving at very low speed5. _ of sandstorms hard to be forecastCitizens being advised

21、to stay indoorsSolution to sandstormsPlanting 6. _orangethickStrengthtreesRead Sandstorms in Asia again. Complete these sentences.The winds in a sandstorm can sometimes _.2. When Ren Jianbo was living in Inner Mongolia _. 3. Sandstorms in China appear to have increased _.4. Cutting down trees and di

22、gging up grass can _. prevent you from seeing the sunhe experienced a terrible sandstormbecause of desertificationcause deserts and sandstorms to increase5. Traffic moved very slowly because _.6. The government is planting trees to the west of Beijing to _.the drivers cannot seeprevent the desert co

23、ming nearerMatch A-H in the box with the two people.A. To be cycling in a sandstorm is frightening.B. A terrible experienceC. Hoping to surviveD. If you want to go out, youd better wear a mask.E. Nothing to be doneF. The most frightening and the most dangerous situationG. In a sandstorm, it is diffi

24、cult to breathe and the dust makes him / her ill.H. Thinking he / she is going to be buried under the sand1. Ren Jianbo: _2. Huang Xiaomei: _BCEFH ADG1. Sandstorms are a major disasterA.seem to have increased in recent years.2.Some sandstorms are thick enough toB. desert areas.3. Sandstorms start in

25、C. has been started in China.4. Sandstorms in ChinaD.is a process of land becoming desert.5. DesertificationE.can forecast a sandstorm earlier before its arriving.Match the two parts of the sentences.6.The Chinese Central Weather StationF. for many Asian countries.7. The Chinese governmentG.will con

26、tinue planting trees for years.8.A mass campaign to fight against sandstormsH. cause land to become desert.9.Humans cutting down trees and digging up grassI. move sand dunes.1. F 2. I 3. B 4. A 5. D 6. E 7. G 8. C 9. HComplete these sentences using words from Sandstorms in Asia. The first letter is

27、provided for you.1. Weather experts have f_ another big sandstorm in a weeks time. 2. Its f_ to be outside in a sandstorm. 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 m

28、any years.6. Many Beijing c_ cycle to work. orecastrightening urvivedustrocessyclists /citizensBelow is a summary of the text with some words missing. Fill in the blanks with the help of their initials to complete the summary.Sandstorms are strong, dry winds 1. c_ sand. They mainly occur in Central

29、Asia, North America, Central Africa and Australia. Sandstorms can be frightening. Ren Jianbo from Inner Mongolia thought he would 2. d_ under the sand when he was caught in one as a child. carryingdisappearBeginning in desert areas, sandstorms are increasing in China due to desertification, to fight which the Chinese government has been planting trees. Sandstorms have become a problem in Beijing, where they turn the sky orange and 3. c_ the city in yellow-brown dust. Although the Chinese Central Weather Station can forecast sandstorms weeks in advance (提前), their strength can b