英语必修Ⅲ外研版MODULE4课件（共17张）.ppt

1、Module 4 Sandstorms in AsiatornadohurricaneNatural Disastersearthquakeearthquakesandstorm.lightningvolcanic eruptionvolcanic eruptionSandstormnn green,beautiful,vast,fantastic,thick,etc.cut,dig,overgraze,eat up,desertfrightening,orange sky,strong wind,thick,brown-yellow dust,lights,slownn mask,cycli

2、ng,breath,dirty,traffic,etc.mask,cycling,breath,dirty,traffic,etc.Question:How do sandstorms affect peoples lifeChoose the best answers 1.Sandstorms are strong winds carrying _ through the air.1.Sandstorms are strong winds carrying _ through the air.A.dirt and mud B.rain and heat A.dirt and mud B.ra

3、in and heat C.sand and dust D.cloud and snow C.sand and dust D.cloud and snow 2.What 2.What do do the the experts experts advise advise people people to to do do when when a a sandstorm sandstorm arrives in the city?arrives in the city?A.Dont go out B.Dont wear masks.A.Dont go out B.Dont wear masks.

4、C.Dont go to work as usual.D.Dont ride bicycles C.Dont go to work as usual.D.Dont ride bicycles 3.The 3.The factors factors that that cause cause land land to to be be desert desert are are _._.A.cutting down trees.B.digging up grassA.cutting down trees.B.digging up grass C.climate changes D.all of

5、the above C.climate changes D.all of the above.4.From the last paragraph we know _4.From the last paragraph we know _ A.the government is taking measures to prevent A.the government is taking measures to prevent sandstorms.sandstorms.B.the distance between the desert and the center of B.the distance

6、 between the desert and the center of Beijing is only 250 kilometers.Beijing is only 250 kilometers.C.more than 30 million trees have been planted in C.more than 30 million trees have been planted in Beijing.Beijing.D.the government wont plant trees any more in D.the government wont plant trees any

7、more in five years five years1)The winds in a sandstorm can sometimes _nn 2)When Ren Jianbo was living in Inner Mongolia nn _nn 3)Sandstorms in China appear to have increased nn because of _nn 4)Cutting down trees and digging up grass can cause nn _nn 5)The government is planting trees to the west o

8、f nn Beijing to _ 6)Name the places in China and in the world where sandstorms usually occur.Complete the sentencesprevent you from seeing the sunprevent you from seeing the sunhe experienced a terrible sandstormdesertification.deserts and sandstorms to increaseprevent the desert coming nearerACBInn

9、er Mongolia GansuXinjiangABCDNorth AmericaCentral AfricaAustralia Central AsiaDiscussion:What measures should we take to prevent sandstorms coming?nn We should plant more trees and grow more grass.nn Control air and water pollution.nn Build green fences along the desert.nn Forecast sandstorms real t

10、ime to prevent disaster.nn Establish sandstorm data bank and collect information about sandstorms.nn All countries should join hands to propose a plan in sandstorms control and prevention.World Meteorological Day(March.23)世界气象日The theme:weather,climate,water,and sustainable development Homework: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.