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1、UNIT7Whatsthehighestmountainintheworld？课时课时3SectionA(GrammarFocus-4c)形容词、副词的比较级和最高级一、一、形容词、副词比较级和最高级的构成。形容词、副词比较级和最高级的构成。规则变化一般在原级词尾加-er或-est。richrichertalltallest规则变化以“辅音字母y”结尾的双音节词，先变y为i，再加-er或-est。earlyearlierearliest规则变化以不发音的字母e结尾的单词在词尾直接加r或stnicenicernicest规则变化以重读闭音节结尾且末尾只有一个辅音字母的词，需双写辅音字母，再加-e
2、r或-est。bigbiggerbiggest在多音节词和部分双音节词原级前加more或mostcarefulmore/mostcareful不规则变化good/wellbetterbestbadworseworstmany/muchmoremostlittlelessleastoldoldereldestfarfartherfarthest二、二、比较级的用法。比较级的用法。1.Abe/实义动词形容词/副词比较级thanB意为“A比B更”e.g.Chinahasamuchbigger(big)populationthanCanada.中国有比加拿大更多的人口。biggerAmobilepho
3、newith5Gcansendvideosmuchfaster(fast)thantheonewith4G.5G手机比4G手机发视频更快。注意：alittle，abit，alot，much，even，rather，any等常修饰比较级。faster2.“比较级and比较级”意为“越来越”。Peopleinthecountrysideliveahappierandhappierlifewiththecareofthegovernment.在政府的关照下，农村的人们过着越来越幸福的生活。happierandhappier3.“the比较级，the比较级”意为“越，就越”。Themorecarefu
4、llyyoudrive，thesaferyouare.你开车越小心，你就越安全。morecarefullysafer4.Which/Whobe/实义动词比较级，AorB？表示“A和B，哪一个更？”Whoistaller(tall)，SamorTom？萨姆和汤姆谁更高？taller三、三、最高级的用法。最高级的用法。1.最高级用于三者或三者以上的比较，其结构是：Abe/v.最高级of/in比较范围Samrunsfastest(fast)ofalltheboysinhisclass.萨姆在他们班男孩子中跑得最快。fastest2.“oneofthe最高级名词复数”表示“最之一”。e.g.Heiso
5、neofthetalleststudentsinmyclass.他是我们班最高的学生之一。Runningisoneofthemostpopular(popular)sportsinChina.在中国，跑步是最受欢迎的运动之一。themostpopular3.Which/Whobe形容词最高级逗号A，BorC？e.g.Whoisthetallest，Tom，KateorBill？汤姆，凯特和比尔，谁最高？4.the序数词形容词最高级单数名词，表示“第几的”。e.g.Sheisthesecondtallestgirlinourclass.她是我们班第二高的女生。5.形容词比较级可以表示最高级含义。
6、比较级thananyother名词单数比较级thantheother名词复数e.g.Sheistallerthananyothergirlinourclass.她比我们班其他任何一位女生都高。(她是女生中最高的。)注意：形容词最高级前必须加定冠词the，副词最高级前可以不用。表示“最高程度”的形容词，如excellent，extreme，perfect等，没有比较级和最高级。一、一、用括号内所给词的适当形式填空。用括号内所给词的适当形式填空。1.Askingquestionsisoneoftheeasiest(easy)waystoleadyoutoactivelearning.easiest
7、一一二二2.Whorunsfastest(fast)inyourclass？fastest一一二二3.中考温州改编Bobsgrandmaiseighty，butshelooksmuchyounger(young)thansheis.younger一一二二4.Pleasegetupearlier(early)，oryouwillbelate.earlier一一二二5.北京朝阳区将府实验学校期中改编Puttingoutforestfireis regarded as one of the most difficult(difficult)problemsintheworld.mostdifficu
8、lt一一二二6.Brucejumpsfarther(far)thanmostofthestudentsinhisclass.farther一一二二7.中考宁波改编Formostofthestudents，Juneisalwaysthebusiest(busy)monthinayear.busiest一一二二二、二、完成句子。完成句子。8.上海比中国任何一座城市都大。ShanghaiislargerthananyothercityinChina.largerthananyother一一二二9.亚马孙河是世界上第二长河。TheAmazonisthesecondlongestriverinthewo
9、rld.thesecondlongest一一二二10.出乎我意料的是他甚至比我还大。Tomysurprise，heisevenolderthanme.evenolder一一二二11.我为我的家乡西安感到自豪，因为它变得越来越漂亮。ImproudofXian，myhometown，becauseitisbecomingmoreandmorebeautiful.moreandmorebeautiful一一二二12.你越小心，你在考试中犯的错误越少。Themorecarefulyouare，thefewermistakesyouwillmakeintheexam.Themorecarefulthef
10、ewer易错题易错题一一二二点点拨拨：通通过过中中英英文文句句子子的的比比对对，可可知知英英文文句句子子中中缺缺少少“越越小小心心”和和“越越少少”的的表表达达。The形形容容词词的的比比较较级级.，the形形容容词词的的比比较较级级.，表表示示“越越越越”。mistakes是是可可数数名名词词复复数数，故故用用fewer修修饰饰，填填Themorecareful；thefewer。一一二二短文填空。短文填空。climb,they,good,Asia,small,usual,travel,cute,plant,near一一二二Thepandaisoneofthebestknownandthe1
11、.cutestanimals in the world.Pandas once lived in a few parts of 2.Asia，includingVietnamandBurma，butnowtheyliveonlyinsomepartsofChina.cutestAsiaPandasspendabout12hourseverydayeating.Theymainlyeatbamboo.Andtheyalways3.travelbetweendifferentplacestofindfreshbamboo.Alsotheyeatfruit，other4.plantsandsomef
12、ish.travelplantsPandas5.usuallyliveincoldandwetplaces.Theirblack-and-whitecoatskeep6.themwarm.Pandasareverygoodat7.climbing.Ifpeopleorotheranimalsrunafterthem，theywillclimbupthe8.nearesttreeveryquickly.Theirgoodhearingalsohelpstoavoidanimalswhowanttoeatthem.usuallythemclimbingnearestThereareonlyabout1，864pandasleftinthewild.Themain problem is their living places are 9.smaller andsmaller.Chinarealizesthisproblemandistryingits10.besttodothingsforpandas.smallerbest
