人教版八下英语导学案Unit7Whatsthehighestmountainintheworld第二

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Unit7What’sthehighestmountainintheworld?第二课时SectionA-B(Grammarfocus-1d)【Freetalk】What’sthemostdangerousmountainintheworld?【学习目标】1.学习并掌握下列单词:paragraph,southwestern,thick,include,freezing,condition,succeed,challenge,achieve,force,nature,ocean,thePacificOcean2.学习并掌握下列短语:freezingweatherconditions,heavystorms,takeinair,risktheirlives,giveup,theforceofnature,inthefaceof,atbirth,liveupto.3.学习并掌握下列重点句子:1)Evenmoreseriousdifficultiesincludefreezingweatherconditionsandheavystorms.2).Itisalsoveryhardtakeinairasyougetnearthetop.3).Oneofthemainreasonsisbecausepeoplewanttochallengethemselvesinthefaceofdifficulties.4).Thespiritoftheseclimbersshowsusthatweshouldnevergiveuptryingtoachieveourdreams.4.Grammarfocus:1)形容词最高级的用法;2)掌握量词的用法。【导学案】写出下列短语和句子:1.最危险的运动之一_________________2.绵延中国西南边界_________________3.暴风雪4.吸入_________________5.冒生命危险__________________6.放弃____________7.实现我们的梦想8.大自然的力量___________________9.即使_______________10.登山者的精神___________________11.直立行走_________________12.出生时___________13.liveupto____________13.Evenmoreseriousdifficultiesincludefreezingweatherconditionsandheavystorms.____________________________14.Oneofthemainreasonsisbecausepeoplewanttochallengethemselvesinthefaceofdifficulties.____________________________________________________________________________15.Thespiritoftheseclimbersshowsusthatweshouldnevergiveuptryingtoachieveourdreams.__________________________________________________________________________________【课中案】一、自主学习:阅读3a文章回答下列问题。1.What’soneofthemostdangeroussports?2.WhyisQomolangmasodangerous?3.Whoisthefirstwomanreachingthetop?4.What’sthespiritoftheclimbers?二、合作探究、质疑解惑:★重点语法形容词和副词的比较级和最高级的用法【要点探究】1.英语形容词,副词比较等级有三个:原级,比较级和最高级。形容词比较等级形式变化有规则的和不规则的两种。规则变化(1)单音节词末尾加-er(比较级),-est(最高级)【例】原级比较级最高级greatgreatergreatestsmallsmallersmallestquietquieterquietest(2)单音节如以e结尾,只加-r(比较级),-st(最高级)【例】finefinerfinestnicenicernicestwidewiderwidest(3)闭音节单音节词如末尾只有一个辅音字母,(辅音﹢元音﹢辅音【w,r除外】)须先双写这个辅音字母,再加-er(比较级),-est(最高级)【简记:大红辣椒潮湿瘦变胖】bigbiggerbiggesthothotterhottestredredderreddestfatfatterfattestthinthinnerthinnestwetwetterwettest(4)辅音字母加y结尾的词,则变y为-i,再加-er和-est。。【例】easyeasiereasiesthealthyhealthierhealthiestsunnysunniersunniest(5)其它双音节和多音节词皆在前面加单词more和most。【例】deliciousmoredeliciousmostdeliciouscarefullymorecarefullymostcarefully注意:tiredmoretiredmosttired(6)不规则变化原级比较级最高级good/well→betterbest,bad→worseworst,many/much→moremostlittle→lessleast,far→farther/furtherfarthest/furthest注:有些形容词一般没有比较等级。如:right,wrong,woolen等。2.形容词的比较等级的用法:比较级用于二者的比较,并且用于同类事物之间的比较,不同事物之间不可以比较。最高级用于三者或三者以上比较。(1)用于两者比较,表示“……比……更……”①“A+系动词+形容词比较级+than+B”TonyisolderthanMike.Tony比Mike年纪大。Helookshealthierthanhisfriend.他比他的朋友更健康。②“A+谓语动词+副词比较级+than+B”HerunsfasterthanLiPing.他比李平跑得快。ShesingsbetterthanKate.她比Kate唱歌唱得好。(2)三者或三者以上比较,表示“最……”,①A+系动词+the+形容词最高级+of短语/in短语Heisthetallestofthethree.他是这三个人中最高的。Sheisthefunniestinherclass.她是她们班最有趣的。②A+谓语动词+(the)+最高级+of短语/in短语Thestationchoosesthesongsmostcarefully.这个电台选择歌曲最细心。③A+be+oneofthe+最高级+名词复数Chinaisoneoftheoldestcountriesintheworld.中国是世界上最古老的国家之一(3)其他用法及讲解:①形容词、副词比较级前可以用表示程度的词来修饰如:alittle,alot,much,even,abit,far,still,byfar等词Youlookalittlethinnerthanlastyear.你看起来去年瘦了一点。Theboxismuchbiggerthanthatone.这个盒子比那个大得多。Themattergetsevenworse.事情变得更糟糕了。③表示“两个中比较……”的,用“the﹢比较级﹢ofthetwo”.例:Thegirlisthetallerofthetwo.这个女孩是两个(人)中较高的一个。Thebluesweateristhecheaperofthetwo.这件蓝色的毛衣是两个中比较便宜的。④表示“大几岁”“长几米”“高多少”“年轻多少”“多少倍”等,用“数量+比较级+than”,如:Iamtwoyearsolderthanmysister.我比我的妹妹大两岁。Theriveristenkilometerslongerthanthatone.这条河比那条河长十米。Themountainissixmetershigherthanthatone.这座山比那座山高十米。Theboxistwicebiggerthanthatone.这个盒子比那个大两倍。⑤比较级+and+比较级或moreandmore+原级(多音节),表示“越来越……”指事物本身程度的逐渐增长。如:Summeriscoming,itgetshotterandhotter.夏天将要来临,天变得越来越热。Ourtownisgettingmoreandmorebeautiful.我们的小镇变得越来越美丽。Thestoryismoreandmoreinteresting.故事越来越有趣了。⑥“the+比较级……,the+比较级……”表示:“越……,越……”用来表示一方的程度随着另一方的程度平行变化。如:Themoreheeats,thefatterhegets.他吃得越多,他就变得越胖。Thebetteryoudo,themoreyouwillget.你做得越好,你得到的越多。⑦在含有or的选择疑问句中,如果有两者供选择,前面的形容词要用比较级形式。如:Whoistaller,TimorTom?Tim还是Tom,谁更高?Whichoneisbetterthisoneorthatone?哪一个更好,这个还是那个?⑧同一类人或事物在某一范围内进行比较时,常用“比较级+thananyother+名词单数”,如:ShanghaiisbiggerthananyothercityinChina.在中国,上海比其他城市都大。(上海市中国最大的城市。)Tonyistallerthananyotherstudentinourclass.Tony是我们班最高的学生。(4)原级比较同一级别的比较,一般用“as+形容词/副词原级+as”,表示“和……一样……”,如:MrGreenisashealthyasMrsGreen.格林先生和格林太太一样健康。Heisastallasme.他和我一样高。注:“notas+形容词/副词原级+as”意为“不如……”或“notso…as…”Hedoesnotrunasfastashisbrother.他跑得不如他的哥哥快。TomisnotsofunnyasMike.Tom不如Mike幽默有趣。【精题演练】(1)Theredpencilis____thanthegreenone.A.shortB.shorterC.niceD.theshortest(2012北京)(2)Shelooks_____thanshedoes.A.themoreolderB.veryolderC.mucholderD.moreolder(3)Theycompeted(比赛)toseewhocouldwork_____.A.thefastestandbestB.thefasterandthebetterC.fastestandbetterD.fasterandbetter【课后案】词的适当形式填空1.What’sthe_______(high)ofQomolangma.2It’s_________(safe)and______(fast)toclimbtheQomolangmanow.3.Themostimportantthingis______(save)lives.4.Doyouknowthefirstpeople____(land)onthemoon?5.Whichis________(big),thesun,themoonortheearth?6.--WhatdoyouthinkofMissLi'steacher?--Oh,nooneteache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