八年级英语下册Unit7What'sthehighestmountainintheworldSectionA课件（完整版）3

Unit7What’sthehighestmountainintheworld?SectionAWhat’s

thehighestmountainintheworld?What’sthelargestdesertintheworld?What’sthelongestriverintheworld?LeadinHowhighisQomolangma?It’s8,844metershigh.TheheightofQomolangmais8,844.43meters.Thehighestmountainintheworldis8,844.43metershigh.

ThelongestrivertheNileThebiggestsaltlakestheCaspianSeaThebiggestdesertintheworldtheSaharaHowbigistheSahara?It’sabout9,600,000squarekilometersinsize.Thebiggestdesertintheworldisabout9,600,000squarekilometersinsize.1aMatchthefactsyouknow.Qomolangmaabout9,600,000squarekilometersinsizeTheSahara1,025metersdeepTheCaspianSea6,671kilometerslongTheNile8,844.43metershigh1.Qomolangmais_______thananyothermountainintheworld.2.TheSaharais___________desertintheworld.3.TheCaspianSeais__________ofallthesaltlakes.4.TheNileis____________riverintheworld.higherthebiggestthebiggestthelongest__TheYangtzeRiverisabout_____kilometerslongandtheYellowRiveris_______kilometerslong.__Chinahasthebiggestpopulationintheworld.It’salotbiggerthanthepopulationoftheUS.__Chinaisover______yearsold.IthasamuchlongerhistorythantheUS.TheUSisnoteven_____yearsold.__ChinaisalmostasbigastheUS,butitisthebiggestcountryinAsia.2aListenandnumberthefacts[1-4]intheorderyouhearthem.6,3005,0005,46430014322bListenagainandfillintheblanksin2awiththenumbersinthebox.1TheYangtzeRiverisabout_____kilometerslongandtheYellowRiveris_______kilometerslong.4Chinahasthebiggestpopulationintheworld.It’salotbiggerthanthepopulationoftheUS.3Chinaisover______yearsold.IthasamuchlongerhistorythantheUS.TheUSisnoteven_____yearsold.2ChinaisalmostasbigastheUS,butitisthebiggestcountryinAsia.63005,4645,0003002cMakeconversationsusingtheinformationin2a.DidyouknowthatChinaisoneoftheoldestcountriesintheworld?Yes,Idid.It’smucholderthanmycountry.2dRole-playtheconversation.3aReadthearticleandmatch

each

paragraphwiththemainideas.Pragraph1SpiritofclimbersPragraph2AchievementsofclimbersPragraph3FactsanddangersParagraph1Paragraph2Paragraph1&3ListfourdangersforclimbersListthreeachievementsListfourcomparisonsthickclouds1953-TenzingNorgayandEdmundHillarywerethefirsttoreachthetopmostdangeroussportsnow,freezingweatherandheavystorms1960-thefirstChineseteam1975-thefirstwomanthepopularplacesthehighestmountainthemostfamous3cAnswerthequestionsusing

informationinthearticle.1.WherearetheHimalayas?2.HowhighisQomolangma?3.Whydosomanypeopletrytoclimbthismountaineventhoughitisdangerous?4.Whatdoesthespiritoftheclimberstellus?TheyrunalongthesouthwesternpartofChina.8,844.43metreshigh.Becausepeoplewanttochallengethemselvesinthefaceofdifficulties.Weshouldnevergiveuptryingtoachieveourdreams.Grammar形容词和副词的比较级和最高级形容词和副词的比较级和最高级（规则变化）单音节词和少数多音节词一般在词尾加-er或-est原级比较级最高级highstrongfastslow higherhigheststrongerstrongestfasterfastestslowerslowest以字母e结尾的词，加-r或-st原级比较级最高级finelatefinerfinestlaterlatest以“辅音字母+y”结尾的双音节词，先改“y”为“i”，再加-er或-est原级比较级最高级easyluckyearlyeasiereasiestluckierluckiestearlierearliest多音节词和部分双音节词在词前加more或most原级比较级最高级deliciousinterestingeasilycarefullymoredeliciousmostdeliciousmoreinterestingmostinterestingmoreeasilymosteasilymorecarefullymostcarefullybetterbestworseworstmoremostlessleastfartherfarthestfurtherfurthest（不规则变化）原级比较级最高级good/wellbad/badlymany/muchlittlefar1.Qomolangmais8,844.43metershigh.珠穆朗玛峰高8844.43米。TheCaspianSeais1,025metersdeep.里海深1025米。TheNileis6,671kilometerslong.尼罗河长6671千米。知识点精讲

【自主领悟】数词+meters(kilometers)+long(high/tall/wide/deep/thick/heavy...),是英语中表示计量的方法,其中表示人、树的高度用tall,表示物体的高度用high。例如:MyEnglishteacheris1.82meterstall.我的英语老师高一米八二。【归纳拓展】英语中表示计量的其他方法长、宽、高还可以用复合形容词,即“数字+量词(单数)+long/wide/high...”表达,中间加连字符,常用作定语。例如:Thisisaten-meter-widestreet,andthetrafficisbusy.这条路宽十米,交通繁忙。【活学活用】

①黄河长5464千米。TheYellowRiveris5,464

.②死海约深392米。TheDeadSeaisabout392

.③Themountainis1,500metershigh.(改为同义句)Itisa

mountain.答案:①kilometerslong②metersdeep③1,500-meter-high2.Chinahasthebiggestpopulationintheworld.中国有世界上最多的人口。【自主领悟】population意为“人口”,为不可数名词,在表示人口“多”“少”时,用large(big)和small修饰。特指某一地区或某一国家的“人口”时,其前常加定冠词the。例如:Thepopulationofmyhometownissmall.我家乡的人口很少。【归纳拓展】population的不同用法

population作主语时,谓语动词常用单数形式,但如果有分数或百分数等修饰时谓语动词用复数形式。问某地人口多少常用What’sthepopulationof...?例如:What’sthepopulationofSouthAfrica?南非的人口是多少?【活学活用】

①加拿大的人口是多少?__________________ofCanada?②印度人口相当多。ThepopulationofIndia______so______.③新加坡四分之三的人口是中国人。ThreequartersofthepopulationinSingapore______Chinese.答案:①What’sthepopulation②is;large/big③are3.Chinaisover5,000yearsold.IthasamuchlongerhistorythantheUS.中国有五千多年的历史,比美国历史要长得多。【自主领悟】表示两者比较时用比较级,longer是形容词long的比较级,修饰比较级常用much,alot或是alittle等。例如:Theroomismuchcleanerthanthatone.这个房间比那个干净得多。【活学活用】

①汤姆每天锻炼,身体比以前强壮多了。Tomexerciseseverydayandheis

thanbefore.②现在学生有越来越多的作业。Thestudentshave

homeworknow.③你越努力学习,你取得的成绩就会越好。The

youstudy,

gradesyoucanget.答案:①muchstronger②moreandmore③harder;thebetter4.Ofallthemountains,Qomolangmarisesthehighestandisthemostfamous.在所有的山峰中,珠穆朗玛峰是最高最有名的。【自主领悟】三者或三者以上进行比较:最高级+表示范围的状语,其意义是“某人、某事在某个范围内最……”。使用这种结构时注意,形容词的最高级前面一般来说要加定冠词the。of后接名词,用来说明“最高级的范围”,其实也是“比较对象”;而in直接加一个范围。例如:Maryisthesmarteststudentinourclass.玛丽是我们班最聪明的学生。【归纳拓展】形容词最高级的不同用法(1)“oneof+the+最高级+名词复数”表示“最……的……之一”。例如:DengJiaxianisoneofthemostfamousChinesescientists.邓稼先是中国最著名的科学家之一。(2)“the+序数词+形容词最高级+名词单数”表示“第几最……的……”。例如:Indiahasthesecondlargestpopulationintheworld.印度是世界上人口第二多的国家。【活学活用】①ZhangHuaisthe

(tall)ofallthegirls.②Franceisoneofthe

(big)countriesinEurope.③Africaisthesecond

(large)continentintheworld.答案:①tallest②biggest③largest5.ThefirstwomantosucceedwasJunkoTabeifromJapanin1975.第一个成功的女人是1975年日本的田部井淳子。【自主领悟】succeed为动词,意为“成功”。常见搭配:succeedin(doing)sth.“成功做成某事”。例如:Hesucceededinworkingouttheproblem.他成功解决了这个问题。【归纳拓展】succeed变形记success不可数名词,意为“成功”Successdependsonourefforts.成功取决于我们的努力。可数名词,意为“成功的人或事”Themoviewasagreatsuccess.电影很成功。successful形容词,意为“成功的”,在句中作定语或表语JackieChanisasuccessfulactor.成龙是一名成功的演员。successfully副词,意为“成功地”,在句中作状语Ifinishedthatdifficultworksuccessfully.我成功地完成了那份困难的工作。【活学活用】

①选词填空:success/successful/succeed/successfully。(A)Justasthesayinggoes,“Failureisthemotherof__________”.(B)Cheerup,Jim.Ibelieveyoucanbe__________inthespeech.②Ifwehavenoknowledge,wecannot____________________________(成功完成)anywork.答案:①(A)success(B)successful②succeedinfinishing6.Weshouldnevergiveuptryingtoachieveourdreams.我们从不应该放弃尽力去实现梦想。【自主领悟】(1)giveup“放弃”,后常跟名词、代词或动词-ing形式作宾语。giveup是“动词+副词”结构的短语,宾语是代词时,要置于give与up之间。例如:Holdonyourdreamsandnevergivethemup,children.孩子们,一定要坚持自己的梦想永不放弃。(2)achieve是及物动词,意为“达到;完成;成功”。主语一般是人,后常接愿望、理想、梦想和目标等。例如:Beckhamfinallyachievedhisdream.贝克汉姆最终实现了他的梦想。【归纳拓展】常见由give构成的短语【活学活用】

①这是一个获得教育的好机会。你不应该放弃它。It’sagoodchancetogeteducation.Youshouldn’t________________________.②史密斯先生下定决心要戒烟。Mr.Smithmadeadecisionto________________________.答案:①giveitup②giveupsmoking知识点精练

6.SunshineTheaterisoneofthe

(expensive)theatersintown.7.ZhujiangRiveristhe

(long)inGuangdongProvince.8.Ofallthesaltlakes,theCaspianSeaisthe

(deep).答案:6.mostexpensive7.longest

8.deepestⅡ.句型转换1.Thisisa2,500-meter-longriver.(改为同义句)Thisriveris2,500

.2.TheUSisnotaslargeasRussia.(改为同义句)Russiais

theUS.3.ThepopulationofAustraliais19,300,000.(对画线部分提问)

thepopulationofAustralia?答案:1.meterslong2.largerthan

3.Whatis4.TheGreatWallisthelongestwall.(改为同义句)TheGreatWallis

anyotherwall.5.Qomolangmaisthehighestmountainintheworld.(对画线部分提问)

thehighestmountainintheworld?答案:4.longerthan5.WhatisⅢ.完成句子1.长城纵贯中国北方地区。TheGreatWall________________thenorthernpartofChina.2.这些工人因为吸入了太多灰尘生病了。Theseworkersfellillbecausethey________________toomuchdust.答案:1.runsalong2.tookin

3.这些士兵在敌人面前很勇敢。Thesesoldierswerebrave_________________________________theenemies.4.每人都会实现梦想,只要他尽力。Everyonecan_______his_______ifhetrieshisbest.答案:3.inthefaceof4.achieve;dreamI.单项选择1.Mybrotheris_____moreoutgoingthanme.A.manyB.littleC.much2.October12thwasoneof______daysin2008.Shenzhou-VIIwaslaunched(发射）successfully.A.excitingB.moreexcitingC.themostexciting3.Whichcityis______,Beijing,ShanghaiorFuzhou?A.beautifulB.morebeautifulC.themostbeautiful当堂达标测试

4._____childrenthereareinafamily,_____theirlifewillbe.A.Theless；thebetterB.Fewer；richerC.Thefewer；thebetter5.Mobilephonesareverypopularnowandtheyare______thanbefore.A.cheapB.cheaperC.thecheapest6.Inourcity,it’s_____inJuly,butit’seven___inAugust.A.hotter；hottestB.hot；hotC.hot；hotter7.Jack’shandwritingisas____asMike’s.A.goodB.betterC.best8.Wecandotheworkbetterwith____moneyand______people.A.little;fewB.less;fewerC.fewer;less9.JimisthetalleststudentinourclassandTomisthesecond______one.A.tallB.tallerC.tallestyoungernewerheaviertheheaviesthigherthehighestolderyoungertheyoungesttheoldestII.Finishthesentenceswiththerightformsoftheadjs.1.Kateisyoung,butJoeis_________.2.Myshoesarenew.Mysister’sare______thanmine.3.Herbagisheavy,andhisis______thanhers.Butyoursis___________ofall.4.Tom’skiteishigh.Jim’sis_______thanTom’s.Mike’sis__________ofthemall.5.Billisseven.JohnisnineandTomiseleven.Tomis______thanJohnandBill.Billis__________thanJohn.Billis____________andTomis_________ofthethree.hungryhungrierthenicestheavierheaviesthardharderthehardestbetterIII.Completethesentenceswiththerightformsofthewords.1.Jimisvery_______.LiLeiis________thanJim.(hungry)2.Kate’smooncakesare__________ofall.(nice)3.Yourboxis_______thanmine.Buthisisthe_______ofthethree(heavy).4.Unit2isquite_____.Unit3is_______thanUnit2.It’s__________inModule1.(hard)5.ThisTVplayis_______thanthatone.(good)busythebusiestearlierbestfarimportantthemostbeautifulworse6.Mymotherisvery______.Sheis____________inmyfamily.(busy)7.Linglinggetstoschool______