人教八上英语Unit+4+Section+A(Grammar+Focus-3c)课件

Unit4AmazingPlantsandAnimalsSectionAGrammarFocus-3cThebluewhaleisthelargestandheaviestanimalintheworld.ThebiggestlandanimalintheworldistheAfricanelephants.Thecheetahrunsfastestamongalllandanimals.Ithinkthemostusefulplantintheworldisbamboo.Itisperhapsthemostinterestingplantintheworld.3a.Readthesentencesandnoticethewordsinbold.Whatarethewaystoformasuperlativeadjectiveoradverb?形容词、副词的最高级用于三个或三个以上的人或事物之间的比较，常用of/in短语来说明比较的范围。形容词最高级前要加定冠词the，副词最高级前的the可省略。

定义特点形容词、副词的最高级Itisthemostpopularcinemainthecity.Heis

the

tallest

ofthethree.Heruns(the)fastest.形/副词最高级的构成（规则变化）构成方法原级最高级单音节词和部分双音节词hightallhighesttallestfinenicefinestnicestbigthinbiggestthinnesteasyfunnyearlyeasiestfunniestearliest1.一般在词汇尾加-est2.以字母e结尾的词，在词尾加-st3.重读闭音节词词尾只有一个辅音字母时，先双写该辅音字母，再加-est4.以“辅音字母+y”结尾的双音节词，先把“y”变为“i”，再加-est形/副词最高级的构成（规则变化）构成方法原级最高级多音节词和部分双音节词在词前加mostcomfortablecarefullymostcomfortablemostcarefullyTips:由“动词+-ed”或“动词+-ing”构成的形容词变最高级时，通常在该形容词前加most。interesting→mostinteresting relaxed→mostrelaxedexciting→mostexciting boring→mostboring原级最高级good/wellbestbad/badly/illworstmany/muchmostlittleleastfarfarthest/furthestoldoldest/eldest形/副词最高级的构成（不规则变化）写出下列形容词或副词的最高级1.creative_________________________2.beautifully_______________________3.big_________________________4.funny_________________________5.quiet_________________________6.good_________________________7.little_________________________8.bad_________________________mostcreativemostbeautifullybiggestfunniestquietestbestleastworst最高级的常用句型（一）◆

“主语+be+the+形容词最高级+in/of

短语”意为

“……是……中最……的”。◆“主语+实义动词（+the）+副词最高级+in/of短语”意为“……是……中最……的”。◆

“主语+be+oneofthe+形容词最高级+可数名词复数+in/of

短语”意为“……是……中最……的……之一”。Mymotheristhebusiestoneinmyfamily.TheYangtzeRiveristhelongestriverinChina.Tomworks(the)hardestinClass3.TianjinisoneofthebiggestcitiesinChina.最高级的常用句型（二）◆

“疑问词+be+the+形容词最高级，甲、乙or丙？”用于三个或三个以上的人或事物之间的比较。

◆

“疑问词+助动词+主语+动词原形（+the)+副词最高级，甲、乙or丙？”◆

“主语+be+the+序数词+形容词最高级+可数名词单数+in/of短语”意为“……在……中是第几……的……”。Whoisthetallest,Tom,KateorBill?Whichcitydoyoulikebest,Beijing,ShanghaiorGuangzhou?TheYellowRiveristhesecondlongestriverinChina.1.Amongallanimals,Ilovepandasthebest.Ithinktheyare____________(cute)animalsintheworld.2.Whichdoyouthinkis_________________(beautiful),therose,thepeony,orthelotusflower?3.Lookatthatbutterfly!Ithas_______________(colourful)wings.4.Whichanimaljumps__________(high),thelion,themonkey,orthetreefrog?5.Theelephantbirdswere____________(large)and____________(heavy)birdseveronearth.Somecouldstanduptothreemetrestallandweighupto860kg.3b.Completethesentenceswiththesuperlativeformsofthewordsinbrackets.thecutestthemostbeautifulthemostcolourfulhighestthelargesttheheaviestTheginkgotreeisoneof______________livingtreesonearth.Ginkgotreesfirstappearedover200millionyearsago.Chinesepeoplelovetheginkgo,asitisasymbolofhopeandlonglife.ManyChinesebelievethattheoldginkgotreeintheZhongnanMountainsinShaanxiProvinceis______________.Thousandsoftouristscometoseeiteachyear,especiallyinmid-October,asitis________timetoseeit.Theginkgotreeisoneof_______________treesinstreets,parks,andgardensacrossChina.Whenautumncomes,oneof_____________activitiesistotakeawalkunderginkgotrees.Peoplebelievethebrightyellowleavescanbringjoytotheirheart.3c.Completethepassagewiththesuperlativeformsofthewordsinthebox.ancientbeautifulcommongoodpopularthemostancientthemostbeautifulthebestthemostcommonthemostpopularSomecouldstanduptothreemeterstallandweigh

upto860kg.有些能够长到高达3米，重达860千克。Languagepointsweigh及物动词，表示“称……的重量；重(多少)”eg：Doyouoftenweighyourself?你经常称体重吗？名词形式为____________eg：Hehasgrownbothinheightandweight.他的身高和体重都增加了。weight对重量提问，可以用以下几种句型：Howmuchdoes...weigh?Howheavyis...?Whatistheweightof...?【对点训练】1．(2023·龙东)Thebabypandasoften________

(weight)about0.1to0.2kilosatbirth.2．Myaunteatslessthesedaysbecauseshesaysshewantstolose

（weigh）.weighweightDescribetheirfavouriteanimals,plantsorotherthingsinthesuperlativeadjectiveoradverb.FreeTalkExercise一、单句语法选择1.Ofallthestudents,Lucylivesthe________toschool.Shealwayswalkstoschool.A．farther B．farthest C．close D．closest2．Thisisoneof____filmsofthisyear.moreexcitingB.excitingC.themostexcitingD.mostexciting3．Whichdoyoulike________,bread,eggsorsandwiches?A．better B．best C．well D．muchDCB4．TomhasjustgottheonlychancetovisitPekingUniversity.Sheisthe______studentinclass.luckyB.luckierC.luckiestD.luckily5．—Ourclassdidwellintheschoolsingingcompetition.—Yes,