英语人教版八年级下册期末复习.ppt

八年级（下）期末复习二形容词、副词的比较级和最高级comparativesandsuperlativeswithadj.andadv.板桥中学秦义,大多数形容词和副词有三个等级：原级、比较级、最高级。一、构成规则及变化:1、规则变化2、不规则变化,形容词、副词的比较级和最高级,1.规则变化:1)单音节词和少数双音节词一般在词尾后加-er构成比较级或-est构成最高级.如：原级比较级最高级coldcoldercoldestbrightbrighterbrightestyoungyoungeryoungest,2)以字母e结尾的词只加r或-st构成比较级和最高级。原级比较级最高级nicenicernicestfinefinerfinestlargelargerlargest,3)重读闭音节词末尾只有一个辅音字母时,先双写这个辅音字母,再加-er或-est。如:bigbiggerbiggestthinthinnerthinnest4)以“辅音字母+y”结尾的双音节词，先改y为i,再加-er或-est。如：easyeasiereasiesthappyhappierhappiest,5)多音节词和部分双音节词在词前加more或most。如：deliciousmoredeliciousmostdeliciousinterestingmoreinterestingmostinterestingimportantmoreimportantmostimportant,carefully-morecarefully-mostcarefullyquickly-morequickly-mostquicklyslowly-moreslowly-mostslowlyeasily-moreeasily-mosteasily,2.不规则变化：,现学现练一：fortable3.big4.happy5.cheap6.many7.difficult8.little,betterbestmorecomfortablemostcomfortablebiggerbiggesthappierhappiestcheapercheapestmoremostmoredifficultmostdifficultlessleast,二、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.,现学现练二：1.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,_youllbe.(你吃得越多,就越胖)5.Alicewriteswell.Marywrites_thanshe.(甚至更好）,Themorecareful,thefewer,Themore,thefatter,1.Thegirlbecomes_.(越来越漂亮）,moreandmorebeautiful,2.Theweatherisgetting_.(越来越槽糕）,worseandworse,even/stillbetter,用法：英语中三者或三者以上相比较，表示“最”这样的最高程度概念时，要用“the+最高级”的结构表示。这种句式一般带有表示比较的介词短语，比如:inourclass,ofthethree等。例如：WangLinisthetallestinourclass.Thistheateristhecheapestofthethree.注意使用最高级时应注意以下几点：,三、形容词和副词的最高级,(1)表示“中最之一”的句式，要用oneofthe+形容词最高级+复数名词。例如:JingjiangHotelisoneofthebiggesthotelsinourcity.Lisaisnotoneofmybestfriends.(2)当最高级前面有物主代词或名词所有格时，不加定冠词the。例如：TomisLucysbestfriend.Tuesdayisherbusiestday.,(3)最高级前可加序数词。例如：TheYellowRiveristhesecondlongestriverinChina.(4)形容最高级修饰作表语或介词宾语的名词，代词时，被修饰的词往往省略。例如：Heisthelaziest(student)inourclass.,1.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),busy,themostcareful,farther,happier,largest,thehottest,现学现练三（完成句子）,1.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,总结提高,Whoisthetallest,Tom,Mike,orJack?,Tomisthetallestofthethree.,Mikeisthesecondtalleststudentinourclass.,Jackisoneofthetalleststudentsinourclass.,Tomruns(the)fastestinourclass.,1.Paulisvery_.Heis_thanhisbrother.A.heavy-heavierB.heavy-heavyC.heavier-heavierD.heavy-heavyer2.Ithasthe_clothingstoreinthetown.A.goodestB.gooddestC.bestD.better3.Thisruleris_thanthatone.A.longB.longerC.thelongestD.longest4.Thisbookis_ofall.A.cheapestB.cheapC.cheaperD.thecheapest5.Heismuch_thanhisbrother.A.tallB.tallerC.thetallestD.tallest6.LiLeiis_olderthanLucy.A.quiteB.veryC.muchD.more,Exercise:一.单选,7.Thisisoneof_filmsofthisyear.A.moreexcitingB.excitingC.themostexcitingD.mostexciting8.TheweatherinBeijingiscolderthan_.A.inGuangzhouB.GuangzhouC.thatinGuangzhouD.thatfromGuangzhou9.Tomis_ofthetwoboys.A.tallerB.tallestC.thetallerD.thetallest10.Ofmyparents,myfatherlooks_.A.oldB.olderC.theoldestD.theolder11.Thiswatchis_thanthatone.A.muchexpensiveB.expensiverC.moreexpensiverD.moreexpensive,3.LinTaois_intheclassbecausehenevergetstoschoolontime.（最懒的学生之一）4.Edisonwas_i