Unit4Warmingup&Pre-readingNan’aoMiddleSchoolLiuXiaolingFreetalk:Haveyoueverexperiencedanynaturaldisasters?volcano(火山)sandstorm(沙尘暴)Canyoutellsomekindofnaturaldisasters?Canyoudescribehowterribleanearthquakeis?drought(旱灾)tsunami(海啸)LookatthepicturesofTangshanandSanFrancisco,describewhatyouseeinthepictures.Qs:Whatwillhappeniftherehasbeenabigearthquakeinthesetwocities?(beautifulcities;broadroads;tallbuildings;largepopulation)Tangshan,HebeiJuly28th,19765:13a.m.April18th,1906,SanFran5:13a.m.April18th,1906,SanFranciscociscoPresentation:Asweknow,earthquakesaredisasterstoeveryone.Butcanweavoidorminimize(减少)thelosscausedbyearthquake?Nowlet’sseewhatmayhappenbeforeanearthquakecomes.Howcanweforetellearthquakes?Discussion:(competition)PleaselookatthepicturesonPre-readingandtrytomentionthesignsofanearthquake.Wallsofwellswillhavedeepcracks.Therewillbebrightlightinthesky;Cows,dogsandpigsbecometoonervoustoeat;Micerunoutofthefieldslookingforplacestohide.Thewaterinthewellswillriseandfall.Discussion:(Competition)Imaginethereisanearthquakenow,yourhomebeginstoshakeandyoumustleaveitrightaway.Youhavetimetotakeonlyonething.Whatwillyoutake?Why?personalwashingthingsabottleofwatermoneytorch(手电筒)mobilephonefoodandsweetsblanket(毯子)Whatwillyoutakewithyou?medicineYouwilltake:HOMEWORK:1.Howcanwereducethedamageofearthquakes?2.Prepareforreading.
