【文档说明】《Unit 7 What’s the highest mountain in the world Section A Grammar focus 4a-4c》教学课件7-八年级下册新目标英语【人教版】.ppt，共(29)页，2.629 MB，由小喜鸽上传

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EnjoyasongThemorewegettogether.TheThirdPeriodEnjoyasongThemorewegettogether.First，let’swatchashortEnglishplay.Whatdidyoulearnfromthisst

ory?Whoisthebest/funniestperformer?Whatisthehighestmountainintheworld?Whatisthelongestriverintheworld?WhatisthelongestriverinAsia?Whatistheb

iggestlakeintheworld?8,844.436,671Whatisthebiggestdesertintheworld?9,600,0001,0256,300Whatisthedeepestsaltlak

eintheworld?—What’sthehighestmountainintheworld?—Qomolangma.—HowhighisQomolangma?—It’s8,844.43metershigh.It’shigherthananyothermountain.—Whichist

hedeepestsaltlakeintheworld?—TheCaspianSeaisthedeepestofallthesaltlakes.—DidyouknowthatChinaisoneofth

eoldestcountriesintheworld?—Yes,Idid.It’smucholderthantheUS.英语表示“有多长（宽，高…）”时，一般将数词和数量单位放在表示长、宽、高的形容词前作状语。Grammar(Ⅰ)*Sth./Sb.is..

.long/wide/high/tall/deep...Eg.Thedeskisthreemetreslong,onemeterwideandtwometershigh.1.Thebasketballplayerisovertwometerstall.

2.Thelakeisonly2.5metersdeep.3.Theriverisabouttwokilometerslong.4.Themountainistwothousandmetershigh.5.Thehouseisaboutfi

vemeterswide.这位篮球运动员两米多高。这个湖只有2.5米深。这条河长约两公里。这座山有二千米高。这间房子大约有5米宽。Translate:三个等级:1.原级:同级比较(像/和..….一样)Structure:*①as+adj./adv.+asG

rammar(Ⅱ)e.g.SheisasthinasLily.HewritesascarefullyasLinda.*②not+as/so+adj./adv.+ase.g.Tonydoesn’trunsofastasTom.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.Tomisthetallestofthethreeboys.Zhaoisthemostpopularinourclass.e.g.Thisboxisbiggerthanthatone.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—nice

stcute—cuter—cutestlarge—larger—largest3)以辅音字母＋y结尾的变y为i＋er或est如:easy—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,im

portant,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—themostpleasedtired—moretired—themosttiredb)不规则变化：good—better—bestwell—better—bestbad—worse—worstmany/much—more—mostfa

r—farther—farthest(距离远)far—further—furthest(程度深)old—elder—eldest(长幼)old—older—oldest(年龄)1.比较级考点①比较级修饰词a

little,abit,even,still,much,alot,far等可修饰比较级。e.g.TomisalittletallerthanJim.Thisbookismuchmoreinterestingthanthatone.②同类比较e.g.Theweathe

rinBeijingiscolderthanthatinAnhui.ThestudentsinClass2aremorethanthoseinClass1.Ourschoolisbiggerthanyours/you

rschool.③the+比较级+ofthetwo…e.g.Lucyisthefatterofthetwogirls.④“a/an+比较级”表示“又一，再一”e.g.Lilyhasadoll,butshewantsabiggerone

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

theworksevenharderthisterm.⑥a.越来越......*比较级+and+比较级It’sgettinghotterandhotter.Ourschoolisbecomingmoreandmorebeautiful.

b.越……越….*the+比较级+句子，the+比较级+句子Themoreyouexercise,thehealthieryouare.Theharderyoustudy,thebettergradesyouwillget.Themor

ewegettogether,thehappierwe’llbe.2.最高级考点①形容词的最高级前必须加the；副词的最高级前省略the。e.g.Hestudies(the)hardestinourclass.Shei

sthemosthard-workinginourclass.*②“......之一”问题e.g.Beijingisoneofthebiggestcitiesintheworld.*③“the+序数词+最高级”e.g.Ithinkheisthethirdtalles

tboyinhisclass.TheYellowRiveristhesecondlongestriverinChina.Fillintheblankswiththecorrectformsofthewordsinthebox.bigmu

chpopularlongoldhigh1.TheAmazonRiverisoneofthe_______riversintheworld.It’salittle_______thantheYangtzeRiver.2.Qomolangma

is8,844.43meters_____.It’soneofthemost________placesforseriousmountainclimbers.longestlongerhighpopular4a

['æməzən](6416km)3.Nooceanintheworldisas_____asthePacificOcean.4.AlthoughJapanis_______thanCanada,itis_______sma

ller.bigoldermuch太平洋n.大海；海洋[pə'sɪfɪk]['oʃən]Writetwocomparisonsabouttwotopics.Writetruefacts.Tworivers:_________________an

d______________________________________________________________________________________________________

_____________________________________________________________________________________4bTheYangtzeRiverisalmostaslongastheAma

zonRiver.TheAmazonisalittlelongerthantheYangtze,buttheYangtzeRiveristhelongestriverinChina.theYangtzeRivertheAmazonRiver[

kəm'pærəsnz](比较)((6,416km)Twoanimals:___________and_________1.___________________________________2.____________________________

____________________________________________MonkeyDogAdogisbiggerthanamonkey.Amonkeyissmallerthanadog,butitclimbsatreef

asterthanadog.Writefivequestionsusingcomparisons.Thenaskyourpartneryourquestions.1._________________________________2.___________________________

______3._________________________________4._________________________________5._________________________________4cWhatisthehighestmounta

ininourcity?Whatisthelongestriverinourcity?Whatisthelargestsupermarketinourcity?Whatisthebiggestlakeinourcity?Whatisthebusiestroadin

ourcity?Writedowntheanswers.TheYellowMountainThePuxiRiverTaipingLakeBeihaiRoad1.Toreadthegrammarfocusandmemorizetheimportantphrasesandsen

tences.2.Tomakesomesentencesin4band4c.