九年级英语Unit13We'retryingtosavetheearth（TheSecondPeriod—SectionA3a－4c教案（新版）人教新目标版.docx

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1、TheSecondPeriod—SectionA(3a－4c)TeachingImportantPoints　【教学重点】　Keywords&phrases：　cruel，harmful，industry，law，scientific，affordbeharmfulto，atthetopof，thefoodchain，takepartin，turnoff，payfor，takeaction　Keysentences：　1.Manyhaveheardofsharkfinsoup.　2.Iftheirnumbersdroptoolow，itwillbringdangertoallo

2、ceanlife.　3.Thenumbersofsomekindsofsharkshavefallenbyover90percentinthelast20to30years.　4.Sofar，noscientificstudieshaveshownthatsharkfinsaregoodforhealth，sowhyeatthem?　Keystructure：　Reviewoftenses：be＋doing；usedto＋do；have/has＋done；be＋done；should＋doTeachingDifficultPoints　【教学难点】　★Practicethest

3、ructurestotalkaboutpollutionandenvironmentalprotectioninreading.TeachingAids　【教学工具】　Ataperecorder，CAIormultimediacourseware.TeachingSteps　【教学过程】★Step1　Leadingin　【新课导入】1．Greeting2．BrainstormingQuicklyaskquestionsabouthowtoprotecttheenvironment.Likethis：Whatareyourideasforsolvingtheair/wastepo

4、llutionproblem？…3．Askstudentstorole－playtheconversationin2d.★Step2　Cooperativeinquiry　【合作探究】1．Finishthetaskin3a①Talkabouttheprotectionofendangeredanimalsinourcountry.②Showpicturesofsharks.Askquestionsandthinkaboutthesethings：Whatdoyouknowaboutsharks?Doyouknowsharksareendangered？Why?Whatmight

5、havecausedafallinthenumberofsharks?Discusswithstudentsandpresentthenewwords.shark，fin，method，beharmfulto，thefoodchain，ecosystem③Quicklyreadthearticleandchecktheiranswerstothesequestions.Helpstudentstolearnthenewitems.④Payattentiontothedetailsofthepassage.Getthestudentstofindthesentencesthath

6、avetheinformationaboutthefactsheet.2．Finishthetaskin3b①Readtheinstructions.Scanthefivesentenceswithblanks.②Readaloudthepassagecarefully.Fillintheblanksontheirown.③Checktheanswers.Showthecompletesentencesontheboard.Andreadaloudthem.Discusstheuseoftheconjunctions：so，although，if，but，when.④Playt

7、herecordingforthestudentstoreadaloudthepassage.3．FinishGrammarFocus①Readaloudthesentencesinthegrammarframeuntilfluently.Thinkaboutthetenses，modalverbs，thestructureofusedto，andthepassivevoice.②Askstudentstosayhowtousethetenses，thestructureofusedto，m