【文档说明】《Unit 7 What’s the highest mountain in the world Section A Grammar focus 4a-4c》教案设计4-八年级下册新目标英语【人教版】.doc，共(4)页，49.000 KB，由小喜鸽上传

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SectionA3(Grammarfocus—4c)Grammarfocus—What’sthehighestmountainintheworld?—Qomolangma.—HowhighisQomolangma

?—It’s8,844.43metershigh.It’shigherthananyothermountain.—Whichisthedeepestsaltlakeintheworld?—TheCaspianSeaisthedeepestofallthesaltlakes.

—DidyouknowthatChinaisoneoftheoldestcountriesintheworld?—Yes,Idid.It’smucholderthantheUS.Step1Grammar形容词和副词比

较级和最高级变化规则1.规则变化1)一般情况下，单音节或双音节的形容词（或副词）比较级＋er，最高级＋est如：clever－cleverer－cleverestfew－fewer－fewestsmall－smaller－smallest等。2)以e结尾的词，比较级＋r，最高

级＋st即可。如：nice－nicer－nicestcute－cuter－cutestlarge－larger－largest3)以辅音字母＋y结尾的变y为i＋er或est。如:easy－easier－eas

iesthappy－happier－happiest再如：early,busy,heavy,dirty,lazy也如此。少数单音节词也是这样，如：pleased－morepleased－themostpleasedtired－mor

etired－themosttired2.不规则变化：good—better—bestwell—better—bestbad－worse－worstmany/much—more—mostfar—farther—farthest(

距离远)far—further—furthest(程度深)old—elder—eldest(长幼)old—older—oldest(年龄)Step2中考链接1.比较级考点①比较级修饰问题alittle,abit,even,stil

l,much,alot,far等可修饰比较级。e.g.TomisalittletallerthanJim.Thisbookismuchmoreinterestingthanthatone.②同级比较e.g.TheweatherinBeijingiscoldertha

nthatinXi’an.Ourschoolisbiggerthanyours.③the+比较级e.g.Lucyisthefatterofthetwogirls.④“a/an+比较级”表示“又一，再一”e.g.Lily

hasadoll,butshewantsabiggerone.⑤隐性比较（没有than的情况）e.g.Whorunsfaster,LucyorLily?You’dbettercomeearliernexttime.Heworkedhardlastte

rm,butheworksevenharderthisterm.⑥越来越......a.比较级+and+比较级b.the+比较级+句子，the+比较级+句子a.e.g.It’sgettingcolderan

dcolder.Themoreyouexercise,thebetteryouare.2.最高级考点说明：形容词的最高级前必须加the;副词的最高级前省略the。①范围问题e.g.Tomisthetalleststude

ntintheclass.Springisthebestseasonoftheyear.②“......之一”问题e.g.Beijingisoneofthebiggestcitiesintheworld.③“the+序数词+最高级”e.g.Ithinkheisthesecondtallestbo

yinhisclass.3.比较级和最高级的转换e.g.Tomisthetalleststudentintheclass.=Tomistallerthananyotherstudentintheclass.=Tomistallerthanall

theotherstudentsintheclass.=NootherstudentsaretallerthanTom.2.同级比较①as+adj./adv.+ase.g.SheisasthinasLily.Hewritesasca

refullyasLinda.②not+as/so+adj./adv.+ase.g.Tonydidn'trunsofastasCarter学以致用1.Ourfamilyhasboughtacarsowecantravel_____thanbef

ore.（2008陕西）A.mosteasilyB.lesseasilyC.easilyD.moreeasily2.Myfathertoldmeastorylastnight.Itis____oneI’veeverheard.（2009陕西）A.thefunniestB.funnie

stC.funnierD.thefunnier3.The____friendsyouhave,the___youwillbe.（2010陕西）A.more,happyB.many,happyC.more,happierD.many,happier4.Whenheh

eardacryforhelp,heranoutas_______ashecould.（2011陕西）A.hardlyB.quicklyC.finallyD.slowly5.Thisplaceisnotbig

enoughforLucy’sbirthdayparty.Weshouldfinda_____one.（2012陕西）A.bigB.smallC.biggerD.smallerStep3WritingWritefivequestionsusingcompa

risons.ThenaskyourpartneryourquestionsStep4Fillintheblankswiththecorrectformsofthewordsinthebox.bigmuchpopularlongoldhigh1.TheAmazonRiv

erisoneofthe_______riversintheworld.It’salittle_______thantheYangtzeRiver.2.Qomolangmais8,844.43meters_____.It’soneofth

emost________placesforseriousmountainclimbers.3.Nooceanintheworldisas_____asthePacificOcean.4.AlthoughJapanis_______thanCanada,itis_______s

maller.Step5Writetwocomparisonsabouttwotopics.Writetruefacts.e.g.Tworivers:theYangtzeRiverandtheAmazonRiverTheYangtzeRi

verisalmostaslongastheAmazonRiver.TheAmazonislongerthantheYangtze,buttheYangtzeRiveristhelongestriverinChina.Twocitie

s:___________and___________1._______________________________________________________________.2._____________________

__________________________________________.Twoanimals:___________and___________1.__________________________

____________________________________.2.______________________________________________________________.Step5Homework1.Tomemorizetheimportantphra

sesandsentences.2.Tomakesomesentencesusingas„as,...times„than,lessthan,morethan教后反思：