Unit7ThenaturalworldWelcometotheunitWhatcanyouseeinthepicture?Egret白鷺Wheredoesthiskindofbirdliketolive?Wetland濕地Whatdifferenttypesofecosystemsdoyouknow?LeadinInthisunitwewillreadaboutdifferentecosystems;learnaboutprotectingecosystems;givesuggestionsonhowtoprotectecosystems;betterunderstandtheimportanceofprotectingecosystems.Thenaturalworldiswonderful.Let'slearnaboutdifferentecosystemsandseewhatwecandotohelpprotectthem.1.mastersomenewwordsandphrases.2.learnaboutdifferentecosystemsandfunfactsaboutthem.3.betterunderstandtheimportanceofprotectingecosystems.LearningobjectivesPresentationWhatecosystemsdoyouknow?Whatfunfactsaboutthemdoyouknow?OceanecosystemAmarineecosystemisthebig,saltyoceanandallthelivingthings(plantsandanimals)thatliveinit.Itcoversmostofourplanet—waymorethanland!PresentationWhatecosystemsdoyouknow?Whatfunfactsaboutthemdoyouknow?GrasslandecosystemAgrasslandisabigareacoveredmostlywithgrasstherearesomesmalltreesorbushes,butnotmanytalltrees.It’sahomeformanyplantsandanimalsthatlivetogether.PresentationWhatecosystemsdoyouknow?Whatfunfactsaboutthemdoyouknow?RainforestecosystemRainforestsarehometooverhalfofallthetypesofanimalsandplantsonearth.PresentationWhatecosystemsdoyouknow?Whatfunfactsaboutthemdoyouknow?PolarecosystemTheiceishometoanimalslikepolarbearsandpenguins.Kittyislearningaboutecosystems.Readthefactsbelowwithherandticktheonesyoualreadyknow.√√Rainforestsarehometooverhalfofallthetypesofanimalsandplantsonearth.Coralreefslooklikerocks,buttheysupportalotoflifeinjustasmallarea.Grasslandsoftenliebetweendesertsandforests.Theiceishometoanimalslikepolarbearsandpenguins.1234PresentationWhat

other

ecosystemsdoyouknow?PresentationForestEcosystem（森林生態(tài)系統(tǒng)）PresentationFreshwaterEcosystem（淡水生態(tài)系統(tǒng)）PresentationdesertecosystemwetlandecosystemKittyandDavidaretalkingaboutecosystems.ListenandfillGrasslandsDesertsClimateIt’sverydrywithlittle3.______________.There’shugedifferencein4._______________betweendayandnight.Animals&plantsGrasslandsindifferentplacesarehometodifferentanimals,like1.____________inInnerMongolia,and2.________________inAfrica.5._______________animalsandplantscanlivethere.Thedesertplantskeepwaterintheir6.______________,andmanyanimalscangetwaterfromtheseplants.horsesandcowslionsandgiraffesraintemperatureOnlyafewleavesPresentationKitty:Doyouknowanythingaboutecosystems,David?David:Iknowthatgrasslandsindifferentplacesarehometodifferentanimals.InInnerMongolia,therearehorsesandcows,butinAfrica,therearelionsandgiraffes.Kitty:Oh,really?Doyouknowanythingaboutdeserts?David:Well,it'sverydryindesertsbecausethere'slittlerain.Andthedifferenceintemperaturebetweendayandnightishuge.Kitty:Yes,theclimateindesertsissoawfulthatonlyafewanimalsandplantscanlivethere.David:It'strue.Thedesertplantskeepwaterintheirleaves,andmanyanimalstheregetwaterfromtheseplants.PresentationA:Doyouknowanythingaboutecosystems,…?B:Iknowthat…A:Oh,really?Doyouknowanythingabout...?B:Well,it's…A:Yes,…B:It’strue.…Workinpairsanddiscussthetopic.Usetheconversationbelowasamodel.SpeakingLanguagepoints1.Rainforestsarehometooverhalfofallthetypesofanimalsandplantsonearth.雨林是地球上所有動植物種類中一半以上物種的家園。behometo是……的棲息地/所在地亞馬遜雨林是數(shù)千種物種的家園。TheAmazonrainforestishometothousandsofspecies.澳大利亞是袋鼠和考拉的棲息地。Australia

?ishometo?

kangaroosandkoalas.Languagepoints2.Coralreefslooklike

rocks,buttheysupportalotoflifeinjustasmallarea.珊瑚礁看起來像巖石，但它們在很小的區(qū)

域內(nèi)支持著大量的生命。looklike看起來像她長得像她媽媽。Shelookslikehermother.這只狗看起來像一只熊。Thisdoglookslikeabear.Languagepoints3.Grasslandsoftenliebetweendesertsandforests.

草原通常位于沙漠和森林之間。Andthedifferenceintemperaturebetweendayandnightishuge.

晝夜溫差很大。between...and...在……和……之間我家在學(xué)校和超市之間。Myhouseisbetweentheschoolandthesupermarket.Languagepoints5.Yes,theclimateindesertsissoawfulthatonlyafewanimalsandplantscanlivethere.是的，沙漠里的氣候如此惡劣，以

至于只有少數(shù)動植物能夠在那里生存。so...that...如此……以至于……,引導(dǎo)結(jié)果狀語從句他太

小以至于不能照顧自己。Heissoyoungthathecan`tcareforhim.1.Wewatcheda__________showatthezooyesterday.2.__________arehometomanyfishandotherseaanimals.3.Plants,fishesandthesunarepartofthe__________ofthislake.4.Theheavy__________couldhelp