2023學年完整公開課版初三Unit2Topic2SectionB教案

Unit2Topic2Alltheseproblemsareveryserious.SectionB[教學目標]1．知識與技能(1).Importantwordsandusefulphrasessand,sandstorm,cutdown,changeinto,desert,prevent,preventfrom,humanbeingalthough,law,turnoff,tap(2).GrammarTheuseofindefinitepronounandadverb(3.)TheimportantsentencesandusefulexpressionsThewindisblowingstronglywithlotsofsand.Asaresult,alotofrichlandhaschangedintodesert.Treescanstopthewindfromblowingtheearthaway.Theycanalsopreventthewaterfromwashingtheearthaway.Althoughwehavebuilt“theGreatGreenWall”,westillneedtoworkhardtoprotecttheenvironment.Stopfactoriespouringwastewaterintoriversbycuttingofftheirwatersupply.2.過程與方法本話題通過讓學生利用學案充分預習，以此培養(yǎng)學生預習能力和歸納梳理知識的能力。教學過程中，充分發(fā)揮學生主體作用，以教師“導”為輔，組織和引導學生學習。3.情感態(tài)度與價值觀(1)Talkabouttheimportanceofforestsandwaterresource.Enhancethestudents’awarenessofprotectingenvironment.(2)Askthestudentstocooperatewitheachotherandfinishthestudytaskstogether.[教學重難點]1.ImportantwordsandusefulphrasesTheuseofindefinitepronounandadverbimportantsentencesandusefulexpressions[教學過程]Step1Review1.Actoutthedialogin1a,SectionA.thewords,phrasesandimportantsentencesinSectionA..3.Showthepictureof1a,askthestudents:Asstudents,whatshouldwedoandnotdotoprotecttheenvironment?Step2PresentationShowapictureofsandstorms,thenpresentthedialog.T:Howistheweather?Ss:It’sterrible.Therearesandstorms.T:Yes,doyouknowwhatcausesthesandstorms?Showthepicturesin1c.Helpthestudentstotalkaboutwhatcausesthesandstormsandtheimportanceofforests.to1a.Answerthefollowingquestions.1）Whataretheytalking?2）Whatcausesthiskindofbadweather?1aagain,letstudentswritedownthefunctionsofthetrees.(學案導學提綱對話理解)andrepeat1a.letthestudentsfindoutthekeypoints.(學案導學提綱語言點梳理)Step3ConsolidationRead1aingroups.Finish1b.Talkaboutthetrees’functions.Step4PracticeLetthestudentsread2.Learnandmasterthenewwordsandphrase:law,cutoff.Understand:tap.Askthemtofindouttheimportantanddifficultsentences.Discussingroups:Questions:Whatwaysdoyouhavetoprotectandsavewater?Makealistonwaysofsavingwater.Askseveralgroupstoreporttheirresults.Step5ProjectAskthestudentstowriteapassageaboutenvironmentalprotectionheldbyanofficialmagazine---Friendsoftheearth.Step6Exercisesinclass(學案當堂訓練)一.翻譯下列句子。1.許多肥沃的土地變成了沙漠。Alotofrichland_____________________________________.2.砍樹對環(huán)境會造成很大的傷害。___________________trees________great_______________theenvironment.3.多么糟糕的天氣啊！由于沙塵暴，我什么也看不見。_______bad___________!I_________________________sandstorms.4.盡管他很累了，但他仍然繼續(xù)工作。___________heis__________,hestill______________________________.5.樹能阻止風吹走沙土。（stop,from,blow,away)____________________________________________________________________6.我們應該制定法律來阻止水污染。(pass,against)____________________________________________________________________二．根據(jù)句意及首字母提示完成句子。Treesareveryusefultous.Theycanhelpusp_____thewindfromb_______theearthawayandstopthew_______fromw______theearthaway.Treesalsos_____waterfromrunningaway.Theycankeepwater.Sowemuststoppeoplefromc______downtoomanytrees.Otherwise(否則）alotofrichlandwillchangeintod_______.Wemustgetridof(擺脫)thiskindofbadb______.A______wehaveb______the“TheGreatGreenWall”,wes