外研版Book3Module4IntroductionandreadingPPT.ppt

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1、Introduction and Reading5Introduction Pre-readingCareful-reading4123Post-readingFast-reading6Discussion7Writing 8Homework Please look at these pictures.How beautiful they are!But one day something happened.There is strong, dry wind and the sky is yellow.The sand almost buries the car.What natural di

2、saster is it? It is a _. It is very _.sandstormfrighteningLook at the picture below and complete the sentences 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 san

3、d. sandstorm lasted /has been blowingfrighteningwas blowingburiedhas blow bury frightening last (v) sandstormCheck the meaning of these words and discuss which statements are true.dig earthquake protect sign the Pacific Ocean1 Sandstorms begin in desert areas.2 Deserts are created by climate changes

4、.3 Deserts are also crested because people cut down trees and dig up grass.4 Sandstorms from Asia have blown across the Pacific Ocean to American.5 Sandstorms cant be prevented.6 The inland region has more sandstorms than the one near the sea. 1. Whats the cause of sandstorm?2. What should you do in

5、 a sandstorm to protect yourself? The cause of sandstorm 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; rapid spread of urbanization. We shouldnt go out. We have to we

6、ar hoods, masks and glasses. Cars slow down and have to turn on headlight.What we should do in a sandstorm to protect ourselves: 3. Where in China do sandstorms begin?4. Which do you think is more dangerous, an earthquake or a sandstorm? Say why.5. If you are in a desert, what is the first sign of a

7、 sandstorm?6. Have you ever been in a sandstorm? If yes, describe it to your partner.Can you guess the words from these definition?1. to ride a bicycle _2. someone who knows a lot about a particular subject _cycle expert4. someone who lives in a particular town or country _citizen5. very small bits

8、of dirt or earth, on the ground or in the air _dust3. things that happen one after another, and have a result _process7. to say what will happen _8. everything that is happening at a particular time _forecastsituation6. to continue to live after a difficult or dangerous situation or event _surviveLo

9、ok at the photos. Read the text quickly and answer the questions. 1. What is happening? There is a sandstorm blowing. 2. What is the cyclist wearing and why? Theyre wearing hoods, masks and glasses to protect themselves.3. What do you think happens to traffic in this situation? Why?It moves very slo

10、wly. Because it is not clear to see everything on the road and people must take great care.4. What do you think experts advise people to do in this situation?Stay at home.Find the main idea of each paragraph.Para.1Para.2Para.3Para.4Para.5Para.6A. the description of sandstormsB. the influence of sand

11、storms 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 northwest China.I. Read the passage carefully and choose the best answ

12、ers.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 ride bicycles 3.

13、 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 wont plant trees any more in five yearsB. the distance between the desert and the center of Beijing is only 250 kil

14、ometersC. more than 30 million trees have been planted in Beijing D. the government is taking measures to prevent sandstormsII. Complete the following chart.Sandstorms in AsiaDefinitionSandstorms are 1. _.The main places where sandstorms frequently occurredCentral Asia, North America, 2. _strong, dr

15、y winds that carry sand Central Africa and AustraliaSandstorms in AsiaSandstorms in ChinaSomething about the sandstorms in China Sandstorms begin in desert areas and have increased as a result of 3. _ these years. In Beijing the storms sometimes continue all day and the 4. _ makes traffic move very

16、slowly. Sometimes the strength of the storm is 5. _, and its difficult to breathe. desertification thick dust surprisingSandstorms in AsiaSandstorms in ChinaWays to solve the problem6. _ has been started to help solve it and the government has already planted 7. _ trees and plans to 8. _ for the nex

17、t five years.A mass campaignmore than 30 billioncontinue plantingIII. Read Sandstorms in Asia again. Complete these sentences.1. The winds in a sandstorm can sometimes _ _.2. When Ren Jianbo was living in Inner Mongolia _ _. prevent you from seeing the sun he experienced a terrible sandstorm3. Sands

18、torms in China appear to have increased _.4. Cutting down trees and digging up grass can _ _. 5. Traffic moved very slowly because _.6. The government is planting trees to the west of Beijing to _ _.because of desertification cause deserts and sandstorms to increasethe drivers cannot see prevent the

19、 Desert coming nearerComplete the sentences using words from the text.1. Weather experts have f_ another big sandstorm in a weeks time. 2. Its f_ to be outside in a sandstorm. orecastrightening 3. I was in a very big sandstorm some years ago. Luckily, everyone s_. 4. Theres a lot of d_ on the floor.

20、 We need to sweep it away. 5. Desertification is a long p_ that takes many years.6. Many Beijing c_ cycle to work. urvivedustrocessitizensWhat measures should we take to prevent sandstorms coming?1. We should plant more trees and grow more grass.2. Control air and water pollution.3. Build green fenc

21、es along the desert. 4. Forecast sandstorms real time to prevent disaster.5. Establish sandstorm data bank and collect information about sandstorms. 6. All countries should join hands to propose a plan in sandstorms control and prevention. 请根据以下提示请根据以下提示, 针对山东北部遭受沙针对山东北部遭受沙尘暴袭击的情况尘暴袭击的情况, 向报社向报社投稿投稿

22、, 呼吁大家呼吁大家植树造林植树造林, 保护环境。保护环境。 1. 过去家乡树木成林。过去家乡树木成林。 2. 如今人们毁林种地建房。如今人们毁林种地建房。 3. 气候变化气候变化, 土地沙漠化。土地沙漠化。4. 植树造林植树造林, 人人有责。人人有责。 Dear Editor, Im a student at a Shandong middle school Dear Editor, Im a student at a Shandong middle school. My hometown used to be a beautiful place. Thick forest and gree

23、n grass could be seen everywhere. However, because of climate changes, it rains little now. In order to build houses and grow more crops, people there cut down more and more trees. As time went on, the forests were seriously destroyed. As a result, sandstorms struck us now and then, from which peopl

24、e suffered a lot. To prevent the process of desertification, I hope that all the people take good care of the forest and plant more trees instead of cutting them down. Then our living conditions will soon be improved. 1.Find more information about sandstorms on the internet or other books and write a short passage about sandstorms. 2. Design a poster that encourages people to protect the environment.