Unit4OurWorldTopic1Plantsandanimalsareimportanttous.SectionCThemainactivitiesare1aand2a.本课重点活动是1a和2a。Ⅰ.Teachingaimsanddemands教学目标1.Learnsomenewwordsandphrases:cover,earth,surface,thousandsof,dark,forest,control,wood,rubber,protect,main,fact,infact,makeup,lake,sea,ocean,drop,onearth,hole,fill,fill…with…,dig,deep,everything2.Learnsomeusefulsentences:(1)Waterisnecessaryforallplants.(2)Theycan’tliveatallwithoutwater.3.Goonlearningcomparativeandsuperlativedegreesofadjectives:(1)Theplantsintheforestshelptomaketheairfresher.(2)But,now,rainforestsarebecomingsmallerandsmaller.(3)Watermakesupthelargestpartofthehumanbody.4.Describenatureresourcesandrealizetheimportanceofenvironmentprotection:(1)Theyalsohelptocontroltheclimate.(2)Rainforestsgiveuswood,rubber,fruit,medicineandsoon.(3)Itisimportanttoalllivingthings.Wemustsaveeverydropofwater.Ⅱ.Teachingaids教具录音机/多媒体/小黑板/植树过程的图片Ⅲ.Five-fingerTeachingPlan五指教学方案Step1Review第一步复习(时间:10分钟)通过讨论对动植物的看法，复习形容词比较级和最高级形式，导入本课新词。1.(师生互动示范，然后让学生表演对话，复习描述动物和植物。)T:Hello,S1,doyoulikeplantsoranimals?S1:Ilikeanimalsbetter.T:Why?S1:Becauseanimalsareourfriends.Theygiveusjoy.Theyareveryfriendlytous.T:Welldone!S2,doyoulikeplantsoranimals?S2:Ilikeplantsbetter.T:Why?S2:Becauseplantsareveryimportanttous.Theyareuseful.T:Now,class,pleasepracticethedialoglikethis,OK?(学生两人一组练习对话。然后找几组学生表演。）2.(头脑风暴，引出新知识。)T:Now,pleasesaysomeanimalsandplantsasmanyasyoucan.Ss:…T:Wherecanyouseeanimalsandplants?S3:Onthefarm.S4:Inthezoo.S5:Intheforest.(教师帮助学生用英语说出forest。)T:Verygood.Inaforest,therearemanyanimalsandplants.Todaywe’regoingtolearnaspecialforest.Itoftenrainsanditisverywet.Itisarainforest.(板书并要求学生掌握forest；了解rainforest。)forest,rainforest(教师通过多媒体展示热带雨林的图片，引出并学习生词及比较级+and+比较级的用法。)T:It’sapictureofrainforests.Theycover6%oftheearth’ssurface.Thousandsofanimalslivethere.It’salwaysdark,hotandwetinrainforests.Theycanhelptocontroltheclimate.Theygiveuswood,rubber,fruit,medicineandsoon.Theyareveryimportanttous,buttheyarebecomingsmallerandsmaller,sowemustprotectthemwell.(教师边说边用多媒体呈现短语及生词，并要求学生掌握；理解climate，同时帮助学生理解并掌握smallerandsmaller的用法。)cover,earth,surface,thousandsof,dark,control,climate,wood,rubber,smallerandsmaller,protect(学生熟读单词后，再看图片并回答教师提出的问题。)T:Whatarethey?Ss:Theyarerainforests.T:Howlargearetherainforests?Ss:Theycover6%oftheearth’ssurface.T:What’sintherainforests?Ss:Thousandsandthousandsofanimalslivethere.T:Whatcanwegetfromtherainforests?Ss:Wecangetwood,fruit,medicine,rubberandsoon.T:Aretheyimportanttous?Ss:Yes,theyare.T:Whatshouldwedothen?Ss:Weshouldprotectthemwell.T:Good!Ihoperainforestswillbecomelargerandlarger.Doyouwanttoknowmoreaboutrainforests?Ss:Yes.T:Let’slearnSectionCtogether.Step2Presentation第二步呈现(时间:8分钟)听录音并阅读短文内容，培养学生的听力和阅读能力。1.(听1a录音，了解课文内容并回答问题。)T:Moststudentswanttoknowmoreabouttherainforests.Pleaselistentothetapeandanswerthefollowingquestions:(出示小黑板。)(1)Whatcover6%oftheearth’ssurface?(2)Aretherethousandsofdifferentplantsandlotsoftreesinrainforests?(3)Canrainforestshelptocontroltheclimate?(核对答案。)2.(教师播放1a录音，学生跟读两遍，注意语...
