1、 Module 4Module 4 The earth The earth belongs tobelongs to all of us ,so all of us ,so we should we should do what we cando what we can to protect to protect it it . .Please remember the following suggestion: Todays free talk ?Can you find out which one of the following pictures refers to a sandstor

2、m? snowstormdroughtfloodtornadosandstormthunderstormIf you want to know more -, Lets get close to it!New wordsMatch the words with the following definitions:forecast cycle( v ) dust expert process survive1.some who knows a lot about a particular subject _2.things that happen one after another, and h

3、ave a result _3.very small bits of dirt or earth, on the ground or in the air _4.to say what will probably happen _5.to continue to live after a difficult or dangerous situation or event _6.to ride a bicycle _expertprocessdustforecastsurvivecycle1.What is sandstorm?3.whats the weather experts advice

4、 when a sandstorm comes?Sandstorms are strong, dry winds that carry sands.They advise us not to go out. If we have to ,wed better wear a mask.2.Where in the world are the main four sandstorms places? Central Asia, (2)North America, (3)Central Africa and Australia.(4)Northwest ChinaABCDNorth AmericaC

5、entral AfricaAustralia Central AsiaMatch the main ideas with each partPart I (para 1) :Part II (para2-5) :Part (para6):major disaster in Asia -sandstormMeasures(措施措施)description ； reason ；influence ； suggestion1. Scientists have tried many ways to deal with sandstorms.2. Land becomes desert only bec

6、ause people cut down trees and dig up grass.3. The Chinese Central Weather Station can not forecast sandstorm some weeks before it comes.4. Our government has planted more than 30 billion trees and plans to continue planting for the next 5 years. 來源來源:學學*科科*網網Decide if the following statements are t

7、rue ( )or false()-Para(2-5)Sandstorms in Asia(key words)DescriptionCauseInfluenceSuggestionstrong, dry winds_,the most _and dangerousDesertification ；_ changes ；_ trees；_ grassan _sky, strong_, city in a thick, brown-yellow _move slowly,difficult to see and breathenot to go out , wear a mask orangew

8、indsclimatecut downdig upfrighteningdustthat carry sandmajor sandstorm centers in ChinaGansu and Western Inner MongoliaBeijing and Northeast Inner MongoliaHow far is the desert away from Beijing?Part Part The cars are covered with sand Discussion:What measures should we take to prevent sandstorms co

9、ming?Trees are cut downNothing to hold water.soil is blown awaySoil is washed intoriversThere are too many sheep and cattle(牛牛)All the grass has been eaten Grass will never grow again ; the land becomes desertWhat should we do ?vWe should plant more trees and grow more grass. 來源來源:學學*科科*網網vControl air and water pollution.v Stop people from cutting down trees.vForecast sandstorms real time to prevent disasters. 來源來源:學學*科科*網網v Collect informat