2010高中英语 Module4 Sandstorms in Asia课件 外研版必修3.ppt

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1、Period1Module4SandstormsinAsiaIntroductionReading&Vocabulary1Introduction-1.Vocabulary(5m)UsethewordsinActivity1,Page31tofilltheblank.Thisisa__________.Ithas______fortenhoursandwasvery____________.Thewindis________thesandhigharoundthehouse.Peopleare________

2、inthesandstorm.Sometimesthesandcan_____thewholebuilding.sandstormlastedfrighteningblowingfrightenedbury2Introduction-2.Answering(5m)AnswerthequestionswiththehelpfromActivity2,Page31.1.Wheredosandstormsbegin?2.Whatcausesdeserts?3.Howdoesthesandstormaffectdif

3、ferentplaces?4.Whatdifferencesbetweensandstormsindifferentareas?Sandstormsbeginindesertareas.Desertsarecreatedbyclimatechanges.Anditisalsobecausepeoplecutdowntreesanddigupgrass.SandstormsfromAsiahaveblownacrossthePacificOceantoAmerica.Theinlandregionhasmore

4、sandstormsthantheonenearthesea.3Reading&Vocabulary-1.Pre-reading(5m)Lookatthephoto.Answerthequestions.Answers:Thereisasandstormblowing.They’vewearinghoods,masksandglassestoprotectthemselves.Itmovesveryslowly.Becauseitisnotcleartoseeeverythingontheroadandpeo

5、plemusttakegreatcare.4.Stayathome.4Reading&Vocabulary-2.Intensive-reading(8m)readthepassage,andgetthemainideasofeachpart.SandstormshavebeenamajordisasterformanyAsiacountriesforalongtime.Thewindsinsandstormcansometimesbestrongenoughtomoveanddunes;WhenRenJiab

6、aowasinInnerMongoliaheexperienceaterriblesandstormindesert.SandstorminChinaappeartohaveincreasedinresentyearsasaresultof“desertification”5Cuttingdowntreesanddiggingupgrasscancausetheclimatetochangemakethelandbecomedesert.Trafficmovedveryslowlyasthethickdust

7、makesitdifficulttosee.Whatthegovernmentdotopreventthedesertcomingnear.6Reading&Vocabulary-3.Exercise(5m)FinishtheexerciseatActivity2,Page33.Answers:________________________________________________________cycle(v)expertprocesscitizendustsurviveforecastsituat

8、ion7Reading&Vocabulary–4.Exercise(5m)FinishtheexerciseatActivity3,Page33.Answers:____________________BBAA8Reading&Vocabulary–5.Exercise(6m)FinishthetheexerciseatActivity4,Page13.Answers:preventyou(from