2023学年完整版九年级Unit13We'retryingtosavetheearthS

一、教学目标：1.语言知识目标基本词汇：shark,fin,method,cruel.Harmful,chain,ecosystem,industry,law,scientifi基本词组：beharmfulto,atthetop(ofsth.)基本句型：Noscientificstudieshaveshowedthatsharkfinsaregoodforhealth.Weshouldhelpsavethesharks.2.技能目标:通过阅读获取信息，提高阅读能力。3.情感目标:有环境危机意识，学会关注环境保护环境。二、教学重难点：1.教学重点：掌握本课时的基本词汇、词组和句型。2.教学难点：通过阅读获取信息提高阅读能力。三、教学步骤:I.RevisionTranslation.①甚至是河底都满是垃圾。②这个小镇上的每个人都应该参加打扫。③骑自行车有其它的优点。④我买外卖食品从来不拿木筷子和塑料叉子。II.Warmingup1.T:Theearthisbadlypolluted.Whatshouldwedotosavetheearth?Let’stakeaction.Forexample:①Turnoffthelightswhenyouleavearoom;②Takebusesinsteadofdrivingcars=3\*GB3③Recyclebooksandpaper.2.Therearesomeanimalsareendangered.Weshoulddosomethingtoprotecttheanimalsandtheenvironment!III.Discussion1.Whatdoyouknowaboutshark(鲨鱼)?2.Doyouthinksharkscanbeendangered?Why?3.Whatdoyouthinkmightcauseafallinthenumberofsharks?IV.Reading1.Completethefactsheetin3a.Wheresharkfinsoupispopular

NumberofsharkscaughtandtradedeveryyearHowmuchthenumbersofsomekindsofsharkshavefalleninthelast20to30yearsTwoenvironmentalgroupswhichareagainst“finning”2.Retellthepassage.shark’sfinsoup,insouthernChinaeachtimecutoffnolongernotonly…butalso…atthetopdropbeendangeredthestrongestaround70millionfallenbyover90percentWildAidandtheWWFdeveloplawsscientificstudiesV.Practice(Workon3b)Readthepassageandfillintheblankswiththewordsinthebox.1)Manypeopledonotrealizetheyarekillingawholeshark______theyenjoyabowlofsharkfinsoup.2)Sharksareatthetopofthefoodchain,____iftheirnumbersdrop,theocean’secosystemwillbeindanger.3)Manythinkthatsharksaretoostrongtobeendangered,_____theyarewrong.4)_________therearenoscientificstudiestosupportthis,alotofpeoplebelievethatsharkfinsaregoodforhealth.5)Sharksmaydisappearoneday___wedonotdosomethingtostopthesaleofsharkfins.VI.Languagepoints1.Asharkcannolongerswimandslowlydies.鲨鱼不能再游泳然后慢慢死掉。nolonger意思是“不再”,相当于notanylonger。e.g.MrBrownnolongerworkshere.布朗先生不再在这里工作了。2.Thismethodisnotonlycruel,butalsoharmfultotheenvironment.这种方法不但残忍而且对环境有害。notonly…butalso…用于连接两个表示并列关系的成分，着重强调后者，其意为“不仅……而且……”;其中的also有时可以省略。e.g.1)Shenotonlyplayswell,butalsowritesmusic.她不仅很会演奏，而且还会作曲。2)Notonlymenbutalsowomenwerechosen.不仅仅是男的，女的也有被选中的。若连接两个成分作主语，其谓语通常与靠近的主语保持一致。e.g.Notonlyyoubutalsohehastoleave.不只是你，他也得离开。notonly放在句首，后接句子时要用倒装结构。e.g.Notonlyhadthepoormanbeenfined,butalsohehadbeensenttoprison.这个可怜的人不仅被罚款，而且还被送进了监狱。beharmfulto对……有害e.g.Smokingisharmfultothehealth.吸烟有害健康。Playingcomputergamesmuchisharmfultostudents.电脑游戏玩太多对学生有害。3.Sharksareatthetopofthefoodchainintheocean’secosystem.鲨鱼位于海洋生物系统食物链的顶部。atthetopof在...最高地位;用最高[最大]的(速度,声音等)e.g.Heshoutedatthetopofhisvoiceinorderthathemightbeheard.他尽力大声叫喊,以便别人能听见。4.Iftheirnumbersdroptoolow,itwillbringdangertoalloceanlife.如果它们的数目降至过低，会给所有海洋生物带来危险。此句复数形式的number表达全海洋中鲨鱼的总量。当表示数值的高或低时，number要用high或low修饰。e.g.Inthatcountry,thenumberofchildrengoingtoschoolishigherincitiesthanintownsandvillage.在那个国家，城市儿童入学人数比