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Unit4OurWorldTopic1Plantsandanimalsareimportanttous.SectionAWhatcanweseeinthecountryside?cowcountrysiden.农村，乡下horsehensheepsomesheepWhatcanweseeinthecountryside?绵羊(复数sheep)goosesomegeeseWhatcanweseeinthecountryside?鹅（复数geese)mousesomemiceWhatcanweseeinthecountryside?老鼠（复数mice)Look,listenandsay(影片1)Thesheepistall.Thehorseistaller.Thesheepissmall.Theduckissmaller.smallThedogisbrave.Thelionisbraver.braveThecatislovelier.Thedogislovely.Thehenisbusy.Thecowisbusier.busyuglyThepigisugly.Themouseisuglier.Thegooseisfat.Theduckisfatter.thinThechickenisthin.Therabbitisthinner.adj.瘦的；薄的；稀的smallbigThemicearesmallerthanthehens.Thehensaresmallerthanthegeese.Themicearethesmallestofall.Thehensarebiggerthanthemice.Thegeesearebiggerthanthehens.Thegeesearethebiggestofall.smallbigthinTheducksarealittlethinnerthanthegeese.Theducksaremuchthinnerthanthepigs.单音词和少数双音词原级最高级构成方法highstronghigherstrongerhigheststrongestfinelatefinerlaterfinestlatesteasyluckyearlyeasierluckierearliereasiestluckiestearliestbigthinfatbiggerthinnerfatterbiggestthinnestfattest以字母e结尾的词，加-r或-st一般在词尾加-er或-est重读闭音节词只有一个辅音字母时，应先双写辅音字母，再加-er或-est以“辅音字母加+y”结尾的双音节词，先改“y”为“i”，再加-er或-est比较级原级比较级最高级good/wellbestlittlemany/muchbad/illbetterworsemorelessleastmostworstIrregularforms不规则形式单音节及部分双音节形容词比较级（-er）和最高级（-est）的规则变化。AdjectivestrongtallnicebravecomparativestrongernicersuperlativestrongestnicestAdjectivebigfatthinlazyuglycomparativebiggerlaziersuperlativebiggestlaziestthinnerthinnestuglierugliestfattertallertallestbraverbravestfattest2bWorkaloneActasdifferentanimalsonthefarmtocontinuetheconversation,usingcomparativeandsuperlativedegreesofadjectivesinthetable.countrysideTheairisfresh.Theskyisblue.Thetreesaregreen.Theriverisclear.It’squietinthecountryside.（清澈的）Theairisdirty.Theriverisdirty.cityThebuildingsaretall.Theroadsarewide.Thetrafficisbusy.It’snoisyinthecity.Theairinthecountrysideis______Theskyinthecountrysideis______Theriverinthecountrysideis______Thetreesinthecountrysideare_______thanthoseinthecity.It’s________inthecountrysidethaninthecity.thanthatinthecity.greenerquieterfresherbluerclearer1aLook,listenandsayWheredoesWangWeiliketolivebetter,acountrysideoracity?（影片2）M:Hey,WangWei,whatareyouthinkingabout?W:Oh,I’mthinkingaboutlifeinthecountryside.M:Doyoulikethecountryside?W:Yeah,Ilikeitverymuch.Inthecountryside,theairisfresher,theskyisbluer,andtherearealsogreenertreesandclearerrivers.M:It’squieter,too.Peoplecanenjoynaturethere.W:Mygrandmalivesinthecountryside.SoIgothereformysummervacationeveryyear.M:Thatmustbefun.Listenandfillintheblankswiththecorrectwordsaccordingto1a.•HowdoesWangWeithinkofthecountryside?•WhataboutMichael?•WangWeigoesthereforhissummervacationeveryyear.•WangWeilikesthecountrysideverymuch.Hethinkstheairis_________,theskyis_______andtherearealso_________treesand________riversthere.fresherbluergreenerclearerquieter•Michaelthinksitis__________,too.Andpeoplecanenjoythebeautiesofnaturethere.（录音1）3（影片3）Good,better,best.一好,二好,争三好。Neverletitrest.一步不停往前跑。Tillgoodisbetter.争得好来还要好。Andbetterisbest.最后要争最最好。Let’schant•Makeasurveyingroups.Findouthowmanystudentslikecountrysideandhowmanystudentslikecities.GroupworkSummary•1.Thecomparativeandsuperlativedegreesofadjective.•形容词比较级，最高级的规则变化及用法。（-er/-est）•2.Talkingaboutanimalsanddescribingnature.自然Homework•Drawapictureofyourhometownandwriteapassageaboutit,usingadjectivesandtheircomparativeandsuperlativedegrees.•Thanksforlistening!•Goodbye!