Unit7SectionA课件人教版八年级英语下册

初中英语人教版八年级下册Unit7What'sthehighestmountainintheworld?SectionA(1a-1c)学习目标Keywords&phrases:square;squarekilometer;meter;deep;desert;anyother;geographical.Keysentences:1.It'shigherthananyothermountainintheworld.2.Whichisthedeepestsaltlakeintheworld?3.Itseemsthatyouknowtheanswerstoallmyquestions.Totalkaboutgeographyandnature.LookandsayCanyoureadtheselargenumbers?warminguphundred百thousand千million百万billion十亿trillion万亿9,600,0001,0256,6718,844.43ninemillionsixhundredthousandonethousandandtwenty-fivesixthousandsixhundredandseventy-oneeightthousandeighthundredandforty-fourpointfourthreeWhatarethesedescriptionsfor?9,600,0001,0256,6718,844.43squarekilometersinsizemetersdeepkilometerslongmetershigh

平方千米

metern.米;公尺

adj.深的；纵深的

（面积、体积等）大小landsearivermountainDoyouknowthesefamousplacesintheworld?QomolangmatheNiletheCaspianSeatheSahara['tʃəʊməʊˌlɑ:ŋmə][sə'hɑ:rə]['kæspiən][naɪl]珠穆朗玛峰是世界海拔最高的山峰，高度为8844.43米。QomolangmatheNile尼罗河长6671千米，是世界上最长的河流。theCaspianSea里海虽称海，但却是一个巨大的内陆咸水湖，是世界上最大的湖泊。theSahara撒哈拉沙漠形成于约250万年前，是世界上最大的沙质荒漠。Canyousayanythingelseaboutthesefamousplaces?FreetalkPeoplecanfloatontheCaspianSeaeventhoughtheycan'tswim.Pre-listeningMatchthefactsyouknow.1aQomolangmaAbout9,600,000squarekilometersinsizeTheSahara1,025metersdeepTheCaspianSea6,671kilometerslongTheNile8,844.43metershighMountainRiverSea/LakeDesertFeatureMostLeastheightFillinthetable.highest/tallestlowest/shortestlengthlongestshortestdepthdeepestshallowestareabiggestsmallestListenandcompletethesentences.1bQomolangmais_____________thananyothermountainintheworld.TheSaharais_____________desertintheworld.TheCaspianSeais_______________ofallthesaltlakes.TheNileis_________________riverintheworld.higherthe

biggestthedeepestthelongest

n.沙漠While-listeningListenandread.Teacher:Yesterday,welearnedsomeimportantgeographicalfacts.Ihopeyouallstillrememberthem.I'mgoingtotestyounowbyaskingafewquestions.First,what'sthehighestmountainintheworld?Boy1:Qomolangma!It'shigherthananyothermountainintheworld.Teacher:That'sright.AndwhocantellmewhattheSaharais?Girl1:TheSaharaisthebiggestdesertintheworld.Teacher:Verygood.Andwhichisthedeepestsaltlakeintheworld?地理事实Girl2:TheCaspianSeaisthedeepestofallthesaltlakes.Teacher:You'reallsosmart!Now,forthelastquestion,whichisthelongestriverintheworld?Boy2:Iknow!TheNileisthelongestriverintheworld.Boy1:AndtheAmazonisthesecondlongestriverintheworld.Teacher:Itseemsthatyouknowtheanswerstoallmyquestions.Goodjob!the+序数词+形容词最高级第几……的Post-listeningUsetheinformationin1btomakeconversations.1cQomolangma.Whatisthehighestmountainintheworld?Whatisthebiggestdesertintheworld?TheSahara.Thinkofotherobjectsthatarehigh,big,deeporlonganddescribethem.Iliveinthehighestbuildinginthecity.Wehavethebiggestfieldofallthehighschoolsintown.Helenhasthelongesthairintheclass.Languagepoints1.长、宽、高、深、面积的表达方法Theriveris20meterswide.=Theriveris20metersinwidth.基数词+单位词+形容词（long,wide,high,deep等）基数词+单位词+in+名词（length,width,height,depth,size等）【拓展延伸】作定语时用合成词“数词-单位词单数-

形容词”。This20-meter-longropeisn’tlongenoughtohelpclimbthemountain.2.Qomolangmaishigherthananyothermountainintheworld.该结构意为“比其他任何一个……都……”，指同一范围内比较，表示最高级含义。Sheisthinnerthananyotherstudentinherclass.=Sheisthethinnestinherclass.other必不可少，用以将主语从比较对象中排除，避免逻辑矛盾。比较级+thananyother+可数名词单数【特别提醒】如果比较对象不在同一范围内或不属于同一类别，应用“形容词/副词比较级+thanany（任何的）

+可数名词单数”。ThePacificOceanislargerthananylakeintheworld.练一练Hulunbuirisbiggerthan_____________cityinChina.Hulunbuirisbiggerthan_____________cityinAnhui.anyotherany谈论物体的宽度深度高度长度tall/highdeeplongwide

—It's+数量+high/tall/long/wide/deep.1.—Howhigh/tall/long/wide/deep...+is+主语?2.数词+squarekilometer(s)数词+squaremeter(s)

insizeSummary英语表示“有多长（宽，高……）”时，一般将_____和__________放在表示长宽高的形容词___。数词数量单位前初中英语人教版八年级下册Unit7What'sthehighestmountainintheworld?SectionA(2a-2d)学习目标Keywords&phrases:population;Asian;feelfree;tour;tourist;wall;amazing;ancient;protect;wide;asfarasIknow;man-made;oneoftheoldestcountries;as...as...;thesameas.Keysentences:1.It'salotbiggerthanthepopulationoftheUnitedStates.2.AsfarasIknow,therearenootherman-madeobjectsasbigasthis.3.Themainreasonwastoprotecttheirpartofthecountry.Toreviewthecomparativesandsuperlatives.WarmingupDoyouknowanygeographicalfactsaboutChina?YangtzeRiverYellowRiverHowlongarethetwofamousrivers?What'sthepopulationofChina?

人口数量HowlongistheGreatWall?GreatWallPre-listeningLookandsay630050005465300Readthenumbers.sixthousandandthreehundredfivethousandfivethousand,fourhundredandsixty-fivethreehundredWhile-listening2aListenandnumberthefacts[1-4]intheorderyouhearthem.6,300 5,000 5,464 300____TheYangtzeRiverisabout______kilometerslongandtheYellowRiveris_____kilometerslong.____Chinahasthebiggestpopulationintheworld.It’salotbiggerthanthepopulationoftheUS.____Chinaisover________yearsold.IthasamuchlongerhistorythantheUS.TheUSisnoteven________yearsold.____ChinaisalmostasbigastheUS,anditisthebiggestcountryinAsia.4213

n.亚洲

长江2bListenagainandfillintheblanksin2awiththenumbersinthebox.____TheYangtzeRiverisabout________kilometerslongandtheYellowRiveris__________kilometerslong.____Chinahasthebiggestpopulationintheworld.It’salotbiggerthanthepopulationoftheUS.246,3005,4646,300 5,000 5,464 300____Chinaisover________yearsold.IthasamuchlongerhistorythantheUS.TheUSisnoteven_______yearsold.____ChinaisalmostasbigastheUS,anditisthebiggestcountryinAsia.135,000300Listenandread.Mike：Hi,I’mMike.I’mfromtheUnitedStates.Boy：Welcometoourclass,Mike.We’rehappytomeetyou.Mike：CanyoutellmeabitmoreaboutChina?Girl：Sure!DidyouknowthatChinaisoneoftheoldestcountriesintheworld?It’sover5,000yearsold.Mike：Yes,Idid.It’smucholderthanmycountry—infact,theUnitedStatesisoneoftheyoungestcountriesintheworld.It’snoteven300yearsold.Boy：AndChinahasthebiggestpopulation,too.It’salotbiggerthanthepopulationoftheUnitedStates.Mike：ButChinaisaboutthesamesizeastheUS,right?Girl：Yes,andit’sthebiggestcountryinAsia.Wealsohavesomefamousrivers.TheYangtzeRiveristhelongestriverinAsia.It’sabout6,300kilometerslong.Mike：Wow!Ididn’tknowthat.IthoughttheYellowRiverwaslonger.Boy：No,theYellowRiveris5,464kilometerslong.ButbothriversareveryimportanttoChina.Post-listening2cMakeconversationsusingtheinformationin2a.DidyouknowthatChinaisoneoftheoldestcountriesintheworld?Yes,Idid.It’smucholderthanmycountry.oneof+the+adj.最高级+n.复数最……其中之一Role-playtheconversation.2dGuide:Feelfreetoaskmeanythingontoday'sGreatWalltour.Tourist1:Howlongisthewall?Guide:Ah,themostpopularquestion!Ifwe'reonlytalkingaboutthepartsfromtheMingDynasty,it'sabout8,850kilometerslong.Thismakesitthelongestwallintheworld.Tourist2:Wow,that'samazing!Whydidtheancientemperorsbuildthewall?

（可以）随便（做某事）,其后接动词不定式。

n.&v.旅行；旅游

n.墙

adj.令人大为惊奇的；令人惊喜（惊叹）的

adj.古代的；古老的

n.旅行者；观光者Guide:Themainreasonwastoprotecttheirpartofthecountry.Asyoucansee,it'squitetallandwide.AsfarasIknow,therearenootherman-madeobjectsasbigasthis.Tourist3:IsBadalingpartoftheMingGreatWall?Guide:Yes,it'sthemostfamouspart.

v.保护；防护

adj.宽的；宽阔的

就我所知

adj.人造的不定式短语作表语Readtheconversationin2dandanswerthequestions.1.Whatistheconversationabout?It’saboutatourtotheMingGreatWall.2.HowlongistheMingGreatWall?It’sabout8,850kilometerslong.3.Whatdoestheguidesayaboutthewall?It’squitetallandwide.It’sthelongestwallintheworld.Therearenoman-madeobjectsasbigasthis.

…Let'spracticeMakeeyecontact.Expressinterestinwhatotherpersonissaying.Ifyouarenotfamiliarwiththesubjectmatter,justaskquestions.Feelconfidentanddonothesitatetotakepartinaconversation.Enjoytheconversation.Role-playingroupsoffour.Sometips:比较级和最高级变化规则Revision单音节词和部分双音节词一般在词尾加-er/-esttall-taller-tallesthigh-higher-highest以字母e结尾的词加-r/-stfine-finer-finestwide-wider-widest重读闭音节词词尾只有一个辅音字母时，先双写该辅音字母，再加-er/-esthot-hotter-hottestbig-bigger-biggest以“辅音字母+y”结尾的双音节词，变“y”为“i”，再加-er/-estlazy-lazier-laziesthappy-happier-happiest多音节词和部分双音节词在其前面加more/most(注意：形容词最高级前要加the)interesting-more/mostinterestingpopular-more/mostpopular原级比较级最高级good/wellbetterbestbad/illworseworstmany/muchmoremostlittlelessleastfarfartherfurtherfarthestfurthestoldolderelderoldesteldest比较级和最高级不规则变化Languagepoints1.Chinahasthebiggestpopulationintheworld.①population是集体名词，在句中作主语时，谓语动词用单数形式。Thepopulationoftheworldcontinuestoincrease,butinsomeareasthepopulationisfalling.②表示有多少人口时，用“have/hasapopulationof+数词”，或“thepopulationof…is+数词”。Chinahasapopulationofabout1.4billion.=ThepopulationofChinaisabout1.4billion.③询问人口多少时，用“Whatisthepopulationof…?”或“Howlargeisthepopulationof…?”。What/HowlargeisthepopulationofHenanProvince?④表示人口多少时，用big/large或small修饰，而不能用many，much或few等。Indiahasalargepopulation.类似的，表示price（价格）高低，用high或low，不能用expensive或cheap；表示temperature（温度）高低，用high或low，不能用hot或cold。2.Feelfreetoaskmeanythingontoday’sGreatWalltour.tour在此处作可数名词，还可以作动词。TheywentonatouraroundEuropelastyear.(n.)WetouredItalyforourholidaylastyear.(v.)【拓展延伸】tour(v.)+后缀-ist→tourist(n.)旅行者；观光者Thetourists(n.)toured(v.)HongKongforholidays.Theyallenjoyedtheirtour(n.).tourn.&v.旅行；旅游3.Wow,that’samazing.amazing一般用于修饰事物，amazed（感到惊奇的）常用于修饰人。

beamazedat意为“对……感到惊讶”。Theamazingmagicshowmademefeelsoamazed.I’mamazedathisrapidprogress.amazingadj.令人大为惊奇的；令人惊喜（惊叹）的【拓展延伸】类似的以-ing（令人……），-ed（感到……）结尾的形容词：interesting/interested,surprising/surprised,relaxing/relaxed,moving/moved,tiring/tired,boring/bored,exciting/excited,…6.Themainreasonwastoprotecttheirpartofthecountry.protect此处用作及物动词,protect…against/from…“保护……免于……”。protection作不可数名词，意为“保护；防卫”。Arewedoingenoughtoprotecttheenvironment?Hewearsascarftoprotecthimselfagainst/fromthestrongwind.It’sparents’dutytoprovideprotectionfortheirchildren.protectv.保护；防护初中英语人教版八年级下册Unit7What'sthehighestmountainintheworld?SectionA(3a-3c)学习目标Keywords&phrases:achievement;southwestern;thick;include;freezing;condition;takein;succeed;challenge;inthefaceof;achieve;force;nature;eventhough;evenif;riskone'slife;achieveone'sdream.Keysentences:1.Ofallthemountains,Qomolangmarisesthehighestandisthemostfamous.2.ThefirstChineseteamdidsoin1960,whilethefirstwomantosucceedwasJunkoTabeifromJapanin1975.Tolearnthespiritofmountainclimbing.FreetalkDoyoulikemountainclimbing?Doyouknowthemostpopularplacetogoforit?OneofthemostpopularplacestogoformountainclimbingistheHimalayas.在喜马拉雅山脉之中，海拔在7000米以上的高峰有50多座，8000米以上的有16座，著名的有南峰、希夏邦马峰、干城章嘉峰。“喜马拉雅”在藏语中就是“冰雪之乡”的意思。这里终年冰雪覆盖，一座座冰峰如倚天的宝剑，一条条冰川像蜿蜒的银蛇。其中最为高耸的则是位于中国和尼泊尔边界上的珠穆朗玛峰，它以高达8844.43米的高度位居世界最高峰。Background珠穆朗玛峰(Qomolangma)，简称珠峰，又译作圣母峰，尼泊尔称为萨加马塔峰，也叫“埃非勒斯峰”（Everest），位于中华人民共和国和尼泊尔交界的喜马拉雅山脉之上，终年积雪。高度8844.43米，为世界第一高峰，中国最美的、令人震撼的十大名山之一。Background

1953年5月29日，34岁来自新西兰的登山家埃德蒙·希拉里（EdmundHillary）作为英国登山队队员与39岁的尼泊尔向导丹增·诺尔盖TenzingNorgay一起沿东南山脊路线登上珠穆朗玛峰，是纪录上第一个登顶成功的登山队伍。Background1960年5月25日，中华人民共和国人首次登上珠穆朗玛峰。他们是王富洲、贡布（藏族）、屈银华。此次攀登，也是首次从北坡攀登成功。

1975年5月16日，日本人田部井淳子的从南坡登上了珠峰。1975年5月27日，中国登山队的藏族女队员潘多成为世界上第一个从北坡登上珠穆朗玛峰的女性。

2008年5月8日，中国登山队圣火传递珠穆朗玛峰突击队员，成功地把圣火从8300米突击队营地传递到了珠穆朗玛峰峰顶，创造了人类奥运历史上的奇迹。

What’sthisvideoabout?MountQomolangma.Whatdoyouseeinit?TheviewofMountQomolangmaandothersnowmountains,climbers,explorers,skiersandevenaneaglecamerist.DoyouwanttoclimbMountQomolangma?Pre-readingLet'spredict!Lookatthepictureandthetitle,andthenguess.Qomolangma—theMostDangerousMountainintheWorld?WhatmightbethedangersofclimbingQomolangma?While-readingTask1SkimmingandmatchingMatchthemainideaswitheachparagraph.Paragraph1 Paragraph2 Paragraph3 FactsandDangersAchievementsofClimbersSpiritofClimbersTask2ScanningReadPara.1andfindoutthekeywordstofinishthemindmap.factsdangersFactsanddangers

·Height:_________metershigh.·Place:Himalayas___________________________partofChina.·_____cloudscoverthetop.·Snowcanfall__________.·_______weatherconditions.·______storms.·_____to___________air.8844.43runalongthesouthwesternThickveryhardFreezingHeavyHardtakeinReadPara.2

and

fillinthechart.Task3ScanningfordetailsWhoWhen

AchievementsTenzingNorgayandEdmundHillary1.on____________2.Thefirstpeopleto____________ofQomolangma.Chinesein19603.The_________________didso.4.___________in19755.The____________tosucceed.

May29,1953reachthetop

firstChineseteamJunkoTabei

firstwoman

Task4ScanningandansweringReadPara.3

and

answerthequestions.1.Whydosomanyclimbersrisktheirlives?2.Whatspiritdotheclimbersshowus?Peoplewanttochallengethemselvesinthefaceofdifficulties.Weshouldnevergiveuptryingtoachieveourdreamsandhumanscansometimebestrongerthantheforcesofnature.Presentation3aReadthearticleandmatcheachparagraphwiththemainideas.Paragraph1 SpiritofclimbersParagraph2 AchievementsofclimbersParagraph3 FactsanddangersQomolangma—theMostDangerousMountainintheWorld?Oneoftheworld'smostdangeroussportsismountainclimbing,andoneofthemostpopularplacesforthisistheHimalayas.TheHimalayasrunalongthesouthwesternpartofChina.Ofallthemountains,Qomolangmarisesthehighestandisthemostfamous.Itis8,844.43metershighandsoisverydangeroustoclimb.

adj.西南的；西南方向的

oneofthe+形容词最高级+可数名词复数最……的……之一。该结构作主语时，谓语动词要用第三人称单数。

Thickcloudscoverthetopandsnowcanfallveryhard.Evenmoreseriousdifficultiesincludefreezingweatherconditionsandheavystorms.Itisalsoveryhardtotakeinairasyougetnearthetop.

ThefirstpeopletoreachthetopwereTenzingNorgayandEdmundHillaryonMay29,1953.ThefirstChineseteamdidsoin1960,whilethefirstwomantosucceedwasJunkoTabeifromJapanin1975.

v.包括；包含厚的；浓的反义词：thin（瘦的；薄的）

=heavilyItis+adj.+todosth.it为形式主语,动词不定式短语为真正的主语。Whydosomanyclimbersrisktheirlives?Oneofthemainreasonsisthatpeoplewanttochallengethemselvesinthefaceofdifficulties.Thespiritoftheseclimbersshowsusthatweshouldnevergiveuptryingtoachieveourdreams.Italsoshowsthathumanscansometimesbestrongerthantheforcesofnature.

v.

&n.

挑战；考验

v.

达成；完成；成功

n.

力；力量

n.

自然界；大自然面对（问题、困难等）

theforceof………的力量/力3bReadthearticleagainandcompletethechart.Paragraph1Paragraph2Paragraphs1&3ListfourdangersforclimbersListthreeachievementsListfourcomparisonsthickclouds1953–TenzingNorgayandEdmundHillarywerethefirsttoreachthetopmostdangeroussportParagraph1Paragraph2Paragraphs1&3ListfourdangersforclimbersListthreeachievementsListfourcomparisonsthickcloudsveryhighsnowcanfallveryhardfreezingweatherconditionsheavystormsveryhardtotakeinairasyougetnearthetop1953–TenzingNorgayandEdmundHillarywerethefirsttoreachthetop1960–ThefirstChineseteamreachedthetop1975–JunkoTabeifromJapanwasthefirstwomantoreachthetopmostdangeroussportmostpopularplacehighestmostfamousmoreseriousdifficultiesstrongerthantheforcesofnature3cAnswerthequestionsusinginformationfromthearticle.WherearetheHimalayas?TheHimalayasrunalongthesouthwesternpartofChina.2.HowhighisQomolangma?Qomolangmais8,844.43metershigh.3.Whydosomanypeopletrytoclimbthismountaineventhoughitisdangerous?Manypeopletrytoclimbthismountaineventhoughitisdangerousbecausetheywanttochallengethemselvesinthefaceofdifficulties.4.Whatdoesthespiritoftheclimberstellus?Thespiritoftheclimberstellsusthatweshouldnevergiveuptryingtoachieveourdreams.

=evenif即使；虽然（引导让步状语从句，不能和but连用）Fillintheblanksaccordingtothepassage.Oneofthemost___________sportsintheworldismountain_________,andoneofthemost_________placestogoforthisistheHimalayas.Theseextremelyhigh_______attract(吸引)_________fromallovertheworld.Manypeoplesaythisisoneofthemost________partsoftheworld.TheHimalayas_______alongthe____________partofchina.Ofallthemountains,Qomolangmaisthe_________andthemost_________.dangerousclimbingpopularrisksclimbersfamousrunsouthwesternhighestfamousIt’s_____________toclimbQomolangmabecausethickclouds_______thetopofthemountain.Evenmoreserious___________includethefreezing___________conditionsandthe_______storms.Thefirst_________toreachthetopofQomolangma–TenzingNorgayandEdmundHillary–diditin1953.ThefirstChineseteam__________thetopin1960,andin1975,thefirst__________didittoo.thehardestcoverdifficultiesweatherheavypeoplereachedwomanLanguagepoints1.Evenmoreseriousdifficulties

include

freezingweatherconditionsandheavystorms.

Hisjobincludeslookingafterthewounded.including介词意为“包括……在内”，后接名词或代词作宾语。included形容词意为“包括在内的”，位于所修饰的名词或代词后。Thereare40studentsintheclassroom,includingme.=Thereare40studentsintheclassroom,meincluded.【拓展延伸】includev.包括；包含difficulty既可作可数名词也可作不可数名词，在此用作可数名词。作可数名词时，difficulty通常用作复数，表示具体概念，即：各种各样的“困难；难题；难事”。例如：e.g.Peoplelearninganewlanguagemayfacesomedifficulties.人们学习一门新的语言时可能会遇到一些困难。e.g.Ifyouhaveanydifficulties,youcancallmeforhelp.

如果你遇到任何困难，给我打电话。作不可数名词时，difficulty可译作“困难；艰难；辛苦；费劲”。e.g.Hehadgreatdifficultyinfindinganewjob.他找新的工作费了很大劲。 e.g.Wefoundthehousewithoutdifficulty.我们轻而易举地找到了那座房子。freezingadj.极冷的；冰冻的相当于extremelycold【拓展延伸】freezing可以作名词，意为“冰点”。e.g.Thetemperatureisbelowfreezing.freezev.冻结；使冻住，其过去式及过去分词分别为

froze和frozen。e.g.Waterfreezesat0℃.conditionn.条件；状况既可作可数名词也可作不可数名词，在此用作可数名词。【常用短语】beingood/badcondition处于良好/糟糕的状态weathercondition天气状况livingcondition居住条件outofcondition健康状况不佳2.…,whilethefirstwomantosucceedwasJunkoTabeifromJapanin1975.succeed作不及物动词，其后不能直接跟宾语，主语通常是人或组织等，succeedindoingsth.表示“成功做某事”。Veryfewpeople

succeedinlosingweightandkeepingitoff.succeedv.实现目标；成功【拓展延伸】成功相关的词

反义词succeedv.成功 failv.

失败successn.成功 failure/unsuccessn.失败successfuladj.成功的 unsuccessfuladj.不成功的successfullyadv.成功地 unsuccessfullyadv.不成功地3.Thespiritoftheseclimbersshowsusthatweshouldnevergiveuptryingtoachieveourdreams.achieve在此作及物动词，其主语通常为人，宾语通常为目标、目的或胜利、成功等。achieveone’sdream=realizeone’sdream=makeone’sdreamcometrue,意为“实现某人的梦想”。Heachieved/realizedhisdreamofbecominganengineer.=Hisdreamofbecominganengineercametrue.【拓展延伸】achieve+后缀-ment→achievementn.成就；成绩achievev.达成；完成；成功4.Italsoshowsthathumanscansometimesbestrongerthantheforcesofnature.force既可指实际意义上的力，如自然力，又可指抽象意义的力，如影响力。theforceof“……的力量/力”。Hechangedtheworldthroughtheforceofhisideas.【拓展延伸】force还可作动词，意为“迫使；强迫”，forcesb.todosth.表示“迫使某人做某事”。Warsforcedthemtoleavetheirhomes.forcen.力；力量初中英语人教版八年级下册Unit7What'sthehighestmountainintheworld?SectionA(GF-4c)学习目标Keywords&phrases:ocean;thePacificOcean;as...as;anyother....Keysentences:1.DidyouknowthatChinaisoneoftheoldestcountriesintheworld?2.NooceanisasbigasthePacificOcean.3.It'shigherthananyothermountain.Toreviewthecomparativesandsuperlativesbymakingcomparisons.REVISIONSomeinterestingfactsaboutQomolangma.Qomolangmais8,844.43metershighandisstillgrowing.Ittakesatleast30,000

USDtoclimbQomolangma.Morethan7,000

climbersreachthesummitofQomolangma.About300peoplehavediedonthemountain.ThesummitofQomolangmaisontheborderofNepalandChina.NepalliestothesouthandChinatothenorth.8,844.4330,0007,000eightthousandeighthundredandforty-fourpointfourthreethirtythousandCanyoureadtheselargenumbers?seventhousand61,021sixty-onethousandandtwenty-one大数字的表达和读法大于1000的基数词的表达法：①从数字的右端向左数，每三位数加一个逗点；②第一个逗点前的数为thousand（千），

第二个逗点前的数为million（百万），

第三个逗点前的数为billion（十亿）。③读的时候通常在hundred后加and，如果百位数为0，则在thousand

后加and。GrammarFocusPresentationWhat’sthehighestmountainintheworld?Qomolangma.HowhighisQomolangma?It’s8,844.43metershigh.It’shigherthananyothermountain.Whichisthedeepestsaltlakeintheworld?TheCaspianSeaisthedeepestofallthesaltlakes.DidyouknowthatChinaisoneoftheoldestcountriesintheworld?Yes,Idid.It’smucholderthantheUS.Findthecomparativesandsuperlatives.此句型用比较级表达最高级含义Grammar回顾形容词和副词通常有三种级别：原级（Positiveform）：没有比较含义，“……”；比较级（Comparativeform）：两者间比较，“更……”；最高级（Superlativeform）：三者及三者以上比较，“最……”。注意：某些形容词和副词只用原级，如：perfect，excellent，dead等。形容词和副词的比较级用于两者之间的比较,表示“较…...”或“更……一些”；形容词和副词的最高级用于三者或三者以上的人或物之间的比较，表示“最……”形容词最高级前一般要加定冠词the，副词最高级前的the可以省略。语法概述形容词和副词的比较级和最高级一、比较级和最高级的构成1.规则变化单音节和部分双音节词多音节词和部分双音节词一般在词尾直接加-er或-est以e结尾的，加-r或-st以“辅音字母+y”结尾的，改y为i加-er或-est重读闭音节以一个辅音字母结尾的，双写这个辅音字母后加-er或-est在单词前加more构成比较级，加most构成最高级long→longer→longestnice→nicer→nicestheavy→heavier→heaviestbig→bigger→biggestbeautiful→morebeautiful→mostbeautiful2.不规则变化原级比较级最高级good/wellbetterbestmany/muchmoremostbad/badlyworseworstlittlelessleastfarfarther/furtherfarthest/furthest“比较级+thanany

other+可数名词单数”=“比较级+thantheother+可数名词复数”表示“比其他任何……都……”,表示最高级含义，可与表示最高级的句子进行转换。Myfatheristhetallestoneinmyfamily.=Myfatheristallerthananyothermemberinmyfamily.=Myfatheristallerthantheothermembersinmyfamily.可用于修饰形容词和副词比较级程度的副词（短语）有：much,alittle,even,alot,abit,far等。二、比较级的用法1.（the+）最高级+in/of短语该结构意为“……中最……的”。Ithinkspringisthebesttimeofayear.Tomworks(the)hardestinClass3.2.oneofthe+最高级+可数名词复数+in/of短语该结构意为“……中最……的……之一”。Hangzhouisoneofthemostbeautifulcitiesintheworld.of与in都有“在......当中”的意思。但它们有严格的区别。用of的时候,主语同of后面的词是指同一类的人或物。而用in的时候,主语同in后面的词是指不同类的人或物。三、最高级的用法3.the+序数词+最高级+可数名词单数+in/of短语该结构意为“……在……中是第几……的……”（从第二开始）。Chinaisthethirdlargestcountryintheworld.4.Which/Who…+最高级,A,BorC?该结构意为“A，B，C中，哪个/谁最……？”。Whichisthebiggest,Beijing,ShanghaiorGuangzhou?【特别提醒】(1)最高级前有物主代词、名词所有格等修饰时，其前不加the。TheYangtzeRiverisChina’slonge