Unit 2 Saving the Earth Topic 2 Section A 示范公開課教學(xué)課件【九年級英語上冊仁愛版】

Unit2SavingtheEarthSectionATopic2

Alltheseproblemsareveryserious.Warming-upsandstormLookandguess:what’sthis?manytreescutdownPre-listeningDiscuss

Doyouknowhowsandstormscomeintobeing?forestsgonewashtheearthawayPre-listeningchangeintodesertsandstormscomeintobeingPre-listeningTheboyandgirlsaretalkingabout_________.A.differenttypesofsandstormsB.thereasonsforsandstormsC.sandstormsindifferentcitiesListenandchoosethebestanswerFocusonthemainideaoftheconversationwhenyoulistenforthefirsttime.

While-listeningListenagainandcompletethefunctionsoftreesTrees’functionsA.________________________________________________________B.Alotofwatercanbesavedbyforests.C.____________________________

____________________________While-listeningTreescanstopthewindfromblowingtheearthaway.Theycanalsostopthewaterfromwashingtheearthaway.becomeweaker

destroytheenvironmentdisappearrapidly

ontheearthenoughbambootoeatListenandcirclethephrasesyouhearWhile-listening1.Nowsomekindsofanimalsarebecoming__________________.2.Someanimalsare__________________dyingoutcompletely.3.Inthepast,pandaslivedaquietlifeandhad______________food.4.Humanshave______________________________theimportance

ofprotectinganimals.5.Weshould__________________toprotectthem.Listenandfillintheblanksdoourbestin

dangerofplentyofcometounderstandfewerandfewerWhile-listeningReadandactitoutPost-listening1.Peoplehavecutdownsuchalargenumberoftreesthattheland________________desert.2.Therearefewertreesleft,sothewindalways_______the

earth________.3.Airpollutionhasbecomeaseriousproblem,sowemust

______________toreduceit.4.Weshouldtryourbestto_________people________

cuttingdownthetrees.5.Inthefuture,humanbeingscanprotectthetreeswell.___________,animalswillliveahappylifeintheforest.asaresultchangeintodosomethingstop…fromblow…awayhaschangedintoblowsawaydosomethingstopfromAsaresultCompletethesentencesPost-listening1.Lily,wouldyoulike___________todrink?2.Cindyisverybusynow.Sheneeds________tohelpher.3.Isthere_________wrongwithyourcomputer?4.Jimlookedforhispencil-box____________,buthe

didn’tfindit.5.Istayedathomelastweek.Ididn’tgo__________.somethingsomeoneanythinganywhereanywherePost-listeningFillintheblanksbyusingsomeone,something,anything,somewhere,anywherePost-listeningFreetalkWorkinpairs.Talkaboutthereasonsforsandstormsbyfollowingpictures.Sample:A:Ithinkcuttingtoomany

treescausesthesandstorm.B:Iagree.Treescanprotect

theearthfrombeing

washedaway.And…A:…B:…1.Keywordsandphrases:sand,sandstorm,desert,although,reduce,completely,changeinto,humanbeing,stop…from,blow/wash…away2.Keysentences:Whatcausesthesesandstorms?Asaresult,alotofrichlandhaschangedintodesert.Treescanstopthewindfromblowingtheearthaway.Alotofwatercanbesavedbyforests.Althoughwehavebuilt“TheGreenGreatWall”,westill

needtodosomethingtoprotectthee