Unit12TheEarthTeachingAims(教学目标):1.能听、说、读、写本课的核心词汇：earth,forest,ocean,land,part,rubbish,somany2.能熟练掌握核心句型：Weshouldstopcuttingdownsomanytrees.3.通过学习，增强环保意识，提出环保建议。TeachingImportancesandDifficulties(教学重难点)：1.能在语境中运用本课的核心词汇和句型。2.学生能运用核心句型交流看法。TeachingTools(教学用具)：录音机、自制课件等TeachingProcedures(教学过程)：StepⅠ.Warmupandrevision（热身与复习）1.Singasong.2.Dosomewarming-upexercises.StepⅡ.Presentationandpractice（呈现新语言知识和练习）1.Leadin.T:Look!Whatisit?Ss:It’searth.T:What’sontheEarth?Whatdoyousee?Ss:Iseeforest./Iseeland./Iseeoceans.T:Yes.TodaywearegoingtolearnmoreabouttheEarth.2.Askandanswer.T:WhatdoyouknowabouttheEarth?Ss:Wegetwoodfromtrees.Wegetfruitfromtrees.T:Whatdoweusewoodfor?S1:TheEarthisround.S2:Thereareanimals,peopleandplants.3.Learntosayandusethewords.Thestudentssayandspellthewords.4.WatchthecartoonandtalkabouttheEarth.T:Whatarethegreenparts?Ss:Theyareforests.T:Howaboutthebrownparts?Ss:It’sland.T:What’swrongwiththeEarthnow?Readthisdialogueagainandtrytofindtheanswer.S1:TheEarthwasclean,butnowsomepartsaredirty.T:WhatshouldwedotohelptheEarth?Ss:WeshouldkeeptheEarthclean.5.Thepupilsreadthetextcarefully.Andthentrytodosomeexercises.StepⅣ.Consolidation（拓展延伸）Actoutthedialoguesingroups.
