形容词比较等级.ppt
初四课件Unit9Theworld’shighestmoutianis8,844metershigh荣成三十五中学ShowLearningaims(学习目标)学习并掌握形容词与副词的比较级和最高级的构成。学会运用形容词与副词的比较等级。0102LookatthepicturesandunderstandTheYellowRiver(5,500Km)TheYangtzeRiver(6300Km)TheyangtzeRiverislongerthantheYellowRiverThefastestintheworldQomolangmanThehighestmountainintheworldTheComparativeandSuperlativeDegreesofAdjectivesandAdverbs(形容词和副词的比较级和最高级)大多数形容词和副词有三个等级:原级,即原形。(没有比较时用原级)比较级,表示“较……”或“更……一些”。(两者比较时用比较级)最高级,表示“最……”的意思。(三者以上用最高级)一、形容词和副词比较级和最高级的构成1、规则变化构成方法原级比较级最高级单音节词和少数多音节词一般在词尾加-er/?/或-est/ist/coldcoldercoldestfastfasterfastest以字母e结尾的形容词,加-r或-stnicenicernicestlargelargerlargest重读闭音节词只有一个辅音字母时,应先双写辅音字母;再加-es或-estbigbiggerbiggesthothotterhottest以“辅音字母+y”结尾的双音节词,先改“+y”结尾的双音节词,先改“y”为“i”,再加-er或-esteasyeasiereasiestearlyearlierearliest多音节词和部分双音节词在词前加more或mosttiredmoretiredmosttiredeasilymoreeasilymosteasily一、形容词和副词比较级和最高级的构成原级比较级最高级good/wellbetterbestbad/badlyworseworstmany/muchmoremostlittlelessleastfarfartherfarthestfurtherfurthest2、不规则变化big
Lookatthepicturesandunderstand看图并理解asasTheyangtzeRiverislongerthantheYellowRiver.TheYellowRiverisnotas(so)longastheYangtzeRiver.TheYellowRiverTheYangtzeRiverTheYellowRiverislesslongthantheYangtzeRiver.Qomolangmaisthehighestmountainintheworld二、形容词和副词的比较级和最高级的用法1、表示“和……一样……”,用“as+原级+as”结构。eg:Helikesherasmuchashelikeshissister.2、表示“不如……”,用“notas/so+原级+as”结构或“less+原级+than”结构eg:Hedoesnotsmokeas/soheavilyashisbrother.Hesmokeslessheavilythanhisbrother.3、表示“比……更……”,用“比较级+than”结构。eg:Sheseesmemoreoftenthansheseesherbrother.4、表示“……中最……”,用“最高级+比较范围”结构,比较范围为短语从句。eg:Thisisthebestpictureinthehall.Thisisthebestpicturethathehaseverpainted.■基本用法二、形容词和副词的比较级和最高级的用法5、表示“越来越……”,用