高二英语教案示范教案Unit13Thewaterplanet4thperiod高二

学而思教育·学习改变命运思考成就未来！高考网’readingabilitybyreadingthematerial.3.Improvethestudents’writingability.4.Enablethestudentstorealizethatitisimportanttoprotecttheestuary.TeachingImportantPoints:1.Improvethestudents’readingabilitybyreadingthematerial.2.Improvethestudents’writingability.TeachingDifficultPoint:Howtoimprovethestudents’integratingskills—readingandwriting.TeachingMethods:1.Fastreadingtogothroughthereadingmaterial.2.Inductivemethodtohelpstudentswriteaparagraphsuccessfully.TeachingAids:1.themultimedia2.theblackboardTeachingProcedures:StepⅠGreetingsGreetthewholeclassasusual.StepⅡRevisionT:Yesterdaywedidsomepracticeaboutmodalverbs.Nowlet’sdosomemoreexercisestoseeifyouhavemasteredthem.Pleaselookatthescreen.(Teacherusesmultimediatoshowtheexercisesonthescreen.)Fillintheblanksusingmust/might/may/can/couldandtheirnegativeforms.1.—IsawMaryinthestreetyesterday.—You______haveseenher.SheisstillinAustralia.2.—CouldIuseyourbike?—Yes,ofcourseyou______.3.Thegroundiswet.It______haverainedlastnight.4.Amachine______thinkforitself.It______betoldwhattodo.5.Tom,don’tplaywiththevaluablebottle.You______breakit.Suggestedanswers:1.can’t2.can3.must4.can’t,must5.may/mightStepⅢFastReadingT:Goodwork.Butifwewanttousethemodalverbscorrectly,wemustpractisethemasoftenaspossible.Todaywewillreadanotherpassage.Theoceanisveryimportanttoallthelivingthings,whichisknowntous,andIthinkwehavealsoknownaboutthereasonwhytheoceanbecomessoimportant—becauseofthepropertiesofwater,theoceanisveryimportant.Thepassagewewillreadisalsoaboutwater.Itdealswith“thebodyofwater”.Areyouinterestedinthetopic?S1:Yes.Butwhatisthemeaningof“thebodyofwater”?Ithinkwaterhasnobody.T:Goodquestion.Ithinkyoucangettheanswertothequestionbyyourself.Nowlet’sreadthepassage.Whileyouarereading,trytomakeclearwhatisthemainideaofeach学而思教育·学习改变命运思考成就未来！高考网(Teachergivesstudentsafewminutestoreadthepassage.)T:Haveyoufinishedyourreading?Ss:Yes.T:WangLin,areyouclearabout“thebodyofwater”?S2:Yes.Ithink“thebodyofwater”meansthemainpartofwater.T:Youaregreat!Nowwho’dliketotellmethemainideaofthefirstparagraph?S3:Anestuaryisthebodyofwaterwherearivermeetstheocean.T:Right,thankyouforyouranswer.Whataboutthesecondone?S4:Letmetry.Thegeneralideaisthatestuariesaregreatplacesfornature’syoung.T:WangPing,tellmethemainideaofthethirdparagraph,please!S5:I’mnotsure.Ithinkthethirdparagraphtellsusestuariesareimportanttoanimalsandplants,soweshouldtryourbesttoprotectthemfromenvironmentalpollution.AmIright?T:Yes.Congratulations!Thereisonlythelastparagraphleft.Whocantry?S6:Ithinkthemainideaofthelastparagraphisthatestuariesarealsoimportanttohumanbeingsbecausetheynotonlyproviderecreationandeducationforusbutalsocontributetotheeconomy.StepⅣDiscussionandExplanationT:Thegeneralideaofthepassageisverycleartousnow.Nowlet’sre-readthepassagecarefully.Whileyouarereading,trytofindouttheanswerstothequestionsonPage23.Ifyouneed,youcanhaveadiscussionaboutthem.ThenI’llcheckyouranswers.(Teachergivesstudentsenoughtimetoreadthepassage.Atthesametime,teachergoesamongthemandhelpsthemexpresstheirownopinionsinEnglishcorrectly.)Suggestedanswers:1.Tidesprovideenergyfortheecosystem,andestuariesareprotectedfromwavesandstormsbyislands.Inadditionnutrientsarriveinestuariesfromboththelandandtheocean.Soestuariesaregreatplacesfornature’syoungones.2.Densitymeansthequalityofbeingdense.Inotherwords,therearemorelivingcreaturesthananyotherhabitatonearth.3.Estuariescanmakeourwatercleanbyabsorbingnutrientsandpollutantsfromwatercomingfrominlandsources.4.Thefunctionthatestuariescanabsorbpollutantsandnutrientsmakesestuariesverysensitivetoenvironmentalpollution.5.Estuariescanproviderecreationandeducationforhumanbeings.Besidesestuariesalsocontributetotheeconomy.Sotheyareveryimportanttohumanbeings.T:Welldone.Nowyouareveryfamiliarwiththepassage.Tounderstandthepassagebetter,Iwillexplainsomeimportantphrases.Please,lookattheblackboard.(Teacherwritesthefollowingphrasesontheblackboard.)1.provide…fore.g.Thecompanywillprovidefoodanddrinkforthem.2.haveanopportunitytodosomethinge.g.Ihadnoopportunitytodiscusstheproblemwithheryesterday.3.avarietyof学而思教育·学习改变命运思考成就未来！高考网StepⅤWritingT:Uptonow,wehavelearntalotaboutwaterandknownthepropertiesofwaterandimportanceofestuaries.Nowyouaregivenanopportunitytocheckifyouknowalotaboutwater.Lookatthequestionsonthescreen.(Teacherusesmultimediatoshowthequestionsonthescreen.)1.Whydoesanicecubefloat?2.Whatwillhappentoapieceofmetalifyouputitinwater?3.Whydosomanyspeciesliveinestuaries?4.Whyhavesomanycitiesbeenbuiltbyestuaries?T:Nowimaginethatyourscienceteacherasksyoutochooseoneofthequestionsandwriteaparagraphtoexplainit.Usewhatyoulearnfromthisunitandwhatyouknowaboutnatureandscienceto