Unit4AmazingPlantsandAnimalsSectionAaGrammarFocus课件人教版八年级英语上册

Unit4AmazingPlantsandAnimalsSectionA2a-GrammarfocusYamingItshowsnature’smostamazingfacts!()Thebluewhaleisthe

largestandheaviestanimalonearth.Thecheetahrunsthe

fastest

andisthe

mostbeautiful

animalintheworld.Theredwoodtreeisthe

tallesttreeintheworld.Mossisoneofthe

oldestplantsonearth.Let’sreviewadv.adj.最高级(superlatives)Whichpartsofspeech(词性)havesuperlativeforms?thetheCanyoufindsomethingincommon?Thecheetahrunsfastest.Whenarethesuperlativesused?Comparethreeormorethingsinagroup.old older oldest

fast faster fastest

large larger largest

heavy heavier heaviest

beautiful

more

most beautiful beautifulReadandthinkTheruleissimilarwithcomparatives.(比较级)1.一般情况下,词尾加-est2.以-e结尾的词,词尾加

-st4.多音节词和部分双音节词，词前加most构成最高级3.以

辅音字母+y结尾的双音节词，先把y改为i，加-est5.重读闭音节+词尾只有一个辅音字母，先双写该辅音字母，再加-estbig bigger biggestTheistheshyestplant.TouchMeNotPlantLet'stalkWhat'samazingaboutthedog?Thedogisthemostloyalanimal.[ˈlɔɪəl]adj.忠诚的Thesunfloweristhemostloyalplant.Thebeeisoneof

themosthardworkinganimals.rabbitdogpandacatrosetigerbluewhalecheetahsunflowermossgirafferedwoodtreebeebutterflysnailLet'stalkredwoodtree最高级(superlatives)Thesnailhasthemostteethonearth.Thegiraffeisthetallestanimalintheworld.Let'stalkThepandais

oneofthemostpopularanimalsaroundtheworld.Ithasatleast26,000teeth.Theroseisthemostromanticflowerworldwide.Thetigerscarespeoplemostinzoos.Let'stalkThebutterflyhasthemostcolorfulwings.[rəʊˈmæntɪk]Completethemindmapwiththeinformationfrom2a.onChenJie’sfoldingfanoneofthefastest-growingplantsapopularsubjectinChinesepaintingsoneofthemostusefulplantsintheworldBamboogotat______________________the__________and__________bambooforestinChinagrow_______________inoneday●build__________●make__________

and__________●foodfor__________and__________asymbolof__________theBambooSeainSichuanlargestoldestalmostonemetergoodnesshousestoolsinstrumentspandaspeopleTraitSymbolPlaceUsageLet'sreadLet'slistenEmma:Lookatthepanda,Yaming!It'ssocutewithitssoftblackandwhitefur.Yaming:Yes,anddidyouknowpandasarea________ofChina? TheirblackandwhitecolorrepresentsYinandYang.Emma:

Whatdoesthatmean?Yaming:

InChineseculture,itmeanspeaceandbalance.Andsincethey'reonlyfoundin _______China,pandasnaturallybecameasymbolofourcountry.Emma:

That'ssomeaningful.Whatelsemakesthemspecial?Yaming:

Well,theyareakindofbear,

buttheymostlyeatbamboo.Theyspend____________eating --about10to14hourseveryday!Isn'tthatsurprising?Emma:

Itreallyis!AndIrememberseeingapandaontheWWFlogo.Yaming:

Thepandaisthe____________symbolforwildlifeprotectionworldwide.They wereendangeredanimals.Thankstogreateffort,theyaredoingbetternow.Byprotecting pandas,weprotectthe_____________homesformanyotheranimalstoo.Emma:

Wow,they'retrulyoneofthe____________animals!symbolthemosttimemostfamousmostimportantmostamazingcentralSymbolTraitPlaceSignificance来源于网络spend____________eating_______and______furmeans_____and______foundonlyin__________________eat__________●on___________●protect_____________________for_________________themostfamoussymbolfor________________________asymbolof_______centralChinathemosttimeWWFlogowildlifemostlybambooblackwhiteYinYangprotectionworldwidemanyotheranimalsthemostimportantChinahomesLet'smakeamindmapSymbolSignificancePlaceTraitLet'sretellYaming Pandasarelovelyanimalswithsoftblackandwhitefur.InChina,theyareasymbolofpeaceandbalance,whichcomesfromtheChineseideaofYinandYang.PandasareonlyfoundincentralChina,sotheyhavenaturallybecomeasymbolofthecountry.Althoughpandasareatypeofbear,theymostlyeatbamboo.Theyspendmostoftheirtimeeating—about10to14hourseveryday!That’squitesurprising.Thepandaisalsothemostfamoussymbolforwildlifeprotectionaroundtheworld.Itwasonceanendangeredanimal,butthankstogreateffort,itssituationisimproving.Byprotectingpandas,wealsoprotectthehomesofmanyotheranimals.That’