【文档说明】《Unit 7 What’s the highest mountain in the world Section A Grammar》教学课件6-八年级下册新目标英语【人教版】.ppt，共(38)页，2.149 MB，由小喜鸽上传

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—What’sthehighestmountainintheworld?—Qomolangma.—HowhighisQomolangma?—It’s8,844.43metershigh.It’shigherthananyothe

rmountain.—Whichisthedeepestsaltlakeintheworld?—TheCaspianSeaisthedeepestofallthesaltlakes.—DidyouknowthatChinaisoneoftheoldestcoun

triesintheworld?—Yes,Idid.It’smucholderthantheUS.大多数形容词有三个级。1.原级:Structure:as...as...像..….一样e.g.TimisastallasTom.2.比

较级(用于两者之间的比较):Structure：形容词比较级＋than...e.g.Thisboxisbiggerthanthatone.3.最高级(用于三者或三者以上的比较):Structure:the+形容词的最高级＋of/in...e.g.Tomi

stheheaviestinourclass.Heisthemostpopularinourschool.规则变化1)一般情况下，单音节或双音节的形容词/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:eas

y—easier—easiesthappy—happier—happiest再如：early,busy,heavy,dirty,lazy也如此。4)重读闭音节，单辅音结尾的，双写这个辅音字母＋er或est的词：①fat

—fatter—fattest②thin—thinner—thinnest③hot—hotter—hottest④red—redder—reddest⑤wet—wetter—wettest⑥big—bigger—biggest5)多音节和部分双

音节的词需要在形容词原级前＋more构成比较级，＋themost构成最高级。如：beautiful－morebeautiful－themostbeautiful又如:delicious,popular,important,interesting,expensive,creative双音节的词

如:careful－morecareful－themostcarefuluseful－moreuseful－themostuseful少数单音节词也是这样，如：pleased—morepleased—themostpleasedti

red—moretired—themosttiredb)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)1.三者或三者以上相比，表示最高程度时，用“the+最高级”的结构表示。这种句式一般常有表示比较范围的介词短语。例如：ZhangHu

aisthetallestofthethree.Heworks(the)hardestinhisclass.2.最高级可被序数词以及much，byfar，nearly，almost，bynomeans，notquite，notreally，nothinglike等

词语所修饰。例如：Thishatisbyfar／much／nearly／almost／notnearly／bynomeans／notquite／nothinglikethebiggest.Howmuchdidthesecondmostex

pensivehatcoat?3.表示“最高程度”的形容词，如excellent，extreme，perfect等，没有最高级，也不能用比较级。4.形容词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。e.g.Heisthetallest(bo

y)inhisclass.5.作状语的副词最高级前可以不加定冠词。e.g.Ofalltheboyshecame(the)earliest.1.比较级考点①比较级修饰问题alittle,abit,even,still,m

uch,alot,far等可修饰比较级。e.g.TomisalittletallerthanJim.Thisbookismuchmoreinterestingthanthatone.②同级比较e.g.Theweath

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

tsabiggerone.⑤隐性比较（没有than的情况）e.g.Whorunsfaster,LucyorLily?You’dbettercomeearliernexttime.Heworkedhardlastterm,buthe

worksevenharderthisterm.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’sgettingcolderandcolder.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.Tomisthetalleststudentintheclass.Springisthebestseasonoftheyear

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

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

s.=NootherstudentsaretallerthanTom.总结：①anyother+名词单数theother+名词复数②否定+比较级=最高级比较级+极限=最高级同级比较①as+adj./adv.+a

se.g.SheisasthinasLily.HewritesascarefullyasLinda.②not+as/so+adj./adv.+ase.g.Tonydidn’trunsofastasCarter.1.Ourfamilyhasboughtacarsowecantravel_____th

anbefore.（2008陕西）A.mosteasilyB.lesseasilyC.easilyD.moreeasily2.Myfathertoldmeastorylastnight.Itis____oneI’veeverheard.（2009陕

西）A.thefunniestB.funniestC.funnierD.thefunnierDA3.The_____friendsyouhave,the____youwillbe.（2010陕西）A.m

ore,happyB.many,happyC.more,happierD.many,happier4.Whenheheardacryforhelp,heranoutas_______ashecould.（2011陕西）A.hardlyB.quicklyC.finallyD.slowlyCB5

.ThisplaceisnotbigenoughforLucy’sbirthdayparty.Weshouldfinda_____one.（2012陕西）A.bigB.smallC.biggerD.smallerCFillintheblankswiththecorrectformsoft

hewordsinthebox.bigmuchpopularlongoldhigh1.TheAmazonRiverisoneofthe_______riversintheworld.It’salittle_______thantheYang

tzeRiver.2.Qomolangmais8,844.43meters_____.It’soneofthemost________placesforseriousmountainclimbers.longest

longerhighpopular4a3.Nooceanintheworldisas_____asthePacificOcean.4.AlthoughJapanis_______thanCanada,itis_______s

maller.bigoldermuch太平洋n.大海；海洋Writetwocomparisonsabouttwotopics.Writetruefacts.Tworivers:_________________and_________________________________

___________________________________________________________________________________________________________________________________________

_______________4bTheYangtzeRiverisalmostaslongastheAmazonRiver.TheAmazonislongerthantheYangtze,buttheYangtze

RiveristhelongestriverinChina.theYangtzeRivertheAmazonRiverTwocities:___________and___________1._______________________________.2._

______________________________.Twoanimals:___________and___________1._______________________________.2._________________

______________.Writefivequestionsusingcomparisons.Thenaskyourpartneryourquestions.1._________________________________2

._________________________________3._________________________________4._______________________________

__5._________________________________4cWhatisthehighestbuildinginourcity?1.Sheis________than________.A.busier/u

sB.busier/weC.morebusy/usD.morebusy/we2.Janeis________thanBetty.A.lesstallerB.lesstallestC.lesstallD.notastall3.Ch

inais________countryintheworld.A.thethirdlargestB.thelargestthirdC.thethirdlargeD.athirdlargestBAA4.—Whichis____seasoninBeijing?—Ith

inkit’sautumn.A.goodB.betterC.bestD.thebest5.—Whichis____,thesun,themoonortheearth?—Themoonis.A.smallB.smallerC.smallestD.thesma

llestDD6.IstudyEnglishas____asmybrother.A.hardB.harderC.hardest7.Whichis____,abicycleoracomputer?A.expensiveB.moreexpensi

veC.themostexpensive8.TheYellowRiverisoneof______riversinChina.A.longB.longerC.thelongestABC1.Tomemorizetheimportantphrasesandsentences.2.Toma

kesomesentencesusingas…as,...times…than,lessthan,morethan