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Unit7What’sthehighestmountainintheworld？SectionAlatelater-latestearlyearlier–earliestbigbigger-biggestfluently/difficultmore～,most～重读闭音节、末尾只有一个辅音字母双写加–er或–est单音节词在词尾比较级加-er或最高级加-est以e结尾的词，只需加－r或－st以辅音字母加y结尾双音节词变y为i加–er或–est部分双音节和多音节词在原级前加more或most少数以er,ow结尾的双音节词加-er-esttalltaller-tallestclevercleverer-cleverestcheap,cold,small,warm,young,highfine,nice,safehappy,busy,dirty,easy,lazy,prettyfat,hot,red,thin,wet,sadnarrow,yellowquickly,slowly,useful,careful,popular,modern,形容词和副词比较级和最高级构成(规则变化)不规则变化：原级比较级最高级good/wellbetterbestbad/illworseworstlittlelessleastmany/muchmoremostfarfarther/furtherfarthest/furthestoldolder/elderoldest/eldest形容词与副词的原级1.无比较对象时用。Iamtall.Heishungry.2.原级前的修饰词。veryquitesotoopretty.3.肯定as+原级+asArtisasinterestingasmusic.Playaswellasyoucan.4.否定not+as(so)+原级+asEnglishisnotso/asdifficultasscience.Shedoesnotstudyso/aswellasIdo.形容词和副词比较级的用法1.Whorunsfaster,heorshe?2.Herunsfasterthanshe.3.Herunsmuchfasterthanshe.4.Hebecomeshealthierandhealthier.5.Themoreyouexercise,thehealthieryouwillbe.6.Sheislesshealthythanhe.1.表示两者之间的选择,可用“Which/Who…+比较，…or…?”.2.表示两者之间的比较，通常用连词than引导，表示“更······一些”．3.much/far/alot,even,still,alittle/abit…修饰比较级,表示程度.Whorunsfaster,heorshe?Herunsfasterthanshe.Herunsmuchfasterthanshe.4.“比较级+and+比较级”表示“越来越……”5.“the+比较级,the+比较级”表示“越…,越…”6.表示不及另一方时，用“less+原级+than…”(双音节和多音节词)Hebecomeshealthierandhealthier.Themoreyouexercise,thehealthieryouwillbe.Sheislesshealthythanhe.Heishealthierthanshe.Shanghaiisbecomingmoreandmoremodern.1.比较级+and+比较级越来越…2.the+比较级,the+比较级越…,越…3._______________youare,_________mistakesyouwillmake.(你越仔细，做错的题目就越少）4.__________youeat,_________you’llbe.(你吃得越多,就越胖)5.Alicewriteswell.Marywrites_________________thanshe.(甚至更好）ThemorecarefulthefewerThemorethefatter1.Thegirlbecomes______________________.(越来越漂亮）moreandmorebeautiful2.Theweatherisgetting_________________.(越来越槽糕）worseandworseeven/stillbetter1.表示三者或三者以上比较,可用”Which/Who…+最高级,…,…or…?”表示.2.最高级+of/among(同类比较)in…(范围比较)4.oneof+形容词最高级+名词复数表示“最…之一”3.序数词修饰最高级形容词和副词的最高级的用法Whoisthetallest,Tom,Mike,orJack?Tomisthetallestofthethree.Mikeisthesecondtalleststudentinourclass.Jackisoneofthetalleststudentsinourclass.Tomruns(the)fastestinourclass.3.LinTaois__________________________intheclassbecausehenevergetstoschoolontime.（最懒的学生之一）4.Edisonwas_________________________intheworld.(最伟大的发明家之一）oneofthelazieststudentsoneofthegreatestinventors1.TheYangtzeRiveris__________________riverintheworld.(第三长河）thethirdlongest2.TheAtlanticis__________________oceanintheworld.(第二大洋）thesecondbiggestExercise:一、翻译句子：二、同义句转换1.FlatAismoreexpensivethanFlatBFlatBis_______________thanFlatA.FlatBis_______________FlatA.FlatBisnot_________________FlatA.2.IprefermathstoEnglish.Ilikemaths__________________English.betterthan3.Heisthetalleststudentintheclass.Heis______________________________intheclass.tallerthananyotherstudentanyother+名词单数lessexpensivecheaperthanasexpensiveas1.HainanisaverylargeIsland.Itisthesecond_________islandinchina.(large)2.Ourteacherisas______asbefore.(busy).3.Heis______________amongus.(careful)4.LiLeijumpedfar______thanJim.(far)5.Thebusierheis,the________hefeels.(happy)6.IthinkYaoMingisoneof____________basketballplayersinNBA.(hot)busythemostcarefulfartherhappierlargestthehottest三、完成句子1.Completethechart.AdjectivesComparativesSuperlativeshighdangerouslongpopularhigherhighestmoredangerousmostdangerouslongerlongestmorepopularmostpopularTheworld’shighestmountainintheworld.Doyouknowhowhighitis?Itis8,844metershigh.QomolangmaDoyouknowSaharaisthebiggestdesertintheworld?Yes,itisabout9,600,000squarekilometersinsize.SaharaTheworld’sdeepestsaltlakeTheCaspianSeaDoyouknowthathowdeeptheworld’sdeepestSaltlake?Yes,itis1,025metersdeep.theNilethelongestriverintheworldIt's6,671kilometerslong.Thesecondlongestriverintheworld-Doyouknowitsname?-ItisAmazon.-Doyouknowhowlongitis?-It’sabout6,500kilometerslong.ThelongestriverinAsia.TheYangtzeRiverDoyouknowthattheYangtzeRiveristhelongestriverinAsia?Yes,itis6,300kilometerslong.It’s8,844metershigh.它有8,844米高。Itis…metershigh(long,wide…).它……米高（长,宽……)。“有多长（宽，高……）”时，将数词和数量单位放在表示长宽高的形容词前翻译句子1.这张桌子两米长，一米宽。2.这座山有1500米高。3.这栋楼120米高。4.这本字典有五厘米厚。5.这个湖有多深？1025米深。Thetableistwometerslongandonemeterwide.Themountainis1,500metershigh.Thebuildingis120meterstall.Thedictionaryisfivecentimetersthick.Howdeepisthelake?It’s1,o25metersdeep.你能写出它的同义句吗？Themountainis1,500metershigh.Themountainis1,500metersinheight.Theheightofthemountainis1,500meters.1.Qomolangmais________thananyothermountainintheworld.2.TheSaharais__________desertintheworld.3.TheCaspianSeais__________ofallthesaltlakes.4.TheNileis___________riverintheworld.1b.Listenandcompletethesentences.higherthebiggestthedeepestthelongest1c.Usetheinformationin1btomakeconversations.A:Whatisthehighestmountainintheworld?B:Qomolangma.A:Whatisthebiggestdesertintheworld?B:Sahara.A:Whatisthedeepestsaltlakeintheworld?B:Caspiansea.A:Whatisthelongestriverintheworld?B:Nile.4a.Fillintheblankswiththecorrectformsofthewordsinthebox.1.TheAmazonRiverisoneofthe_________riversintheworld.It’salittle________thantheYangtzeRiver.2