Unit7What'sthehighestmountainintheworldSectionA1a-2c课件人教版八年级英语下册

Unit7What’sthehighestmountainintheworld?（SectionA1a-2c）人教版八年级下册cTeachingAims1.Masterthenewwordsandphrases:square,meter,deep,desert,population,insize…3.Learntotalkaboutgeographicalfacts(地理事实)withcomparativesandsuperlatives;2.Learntoreadlargenumbers.123cHomeworkExercisesSummaryPresentationLeading-in

Step1Step2Step3Step4Step5目录ContentQomolangmatheNiletheSaharatheCaspianSeaQomolangmaTheNileTheCaspianSeaTheSaharaQomolangmaTheNileTheCaspianSeaTheSaharaWhat'sthehighestmountainintheworld?Qomolangma.Howhighisit?/What'stheheightofit?It's8,848.86meters

high.It's8,848.86

meters

inheight.eightthousandeighthundredandforty-eightpointeightsixQomolangmaTheNileTheCaspianSeaTheSaharaWhat'sthelongestriverintheworld?The

Nile.Howlongisit?/What'sthelengthofit?It's6,671

kilometers

long.It's6,671

kilometers

inlength.sixthousandsixhundredandseventy-oneQomolangmaTheNileTheCaspianSeaTheSaharaWhat'sthedeepestsaltlakeintheworld?TheCaspianSea.Howdeepisit?/What'sthedepthofit?It's1,025

meters

deep.It's1,025

meters

indepth.onethousandandtwenty-fiveQomolangmaTheNileTheCaspianSeaTheSaharaWhat'sthebiggest

desert

intheworld?TheSahara.Howbigisit?It'sabout9,000,000

square

kilometersinsize.(Whatsizeisit?)Ithas/covers

9,000,000

squarekilometers.ninemillion1,034,507,890.12Howtoreadlargenumbers?

pointthousandmillionbillionandandonetwo1.要读一组长数字，可以先把这组数字分3个数字一组用逗号隔开。2.把长数字分为3个数字一组，用逗号隔开，从右到左，把第一个逗号看作thousand，第二个逗号看作million,第三个逗号是billion。英语里没有万和十万的表达，一万：tenthousand十万：onehundredthousand3.“and”在十位数和百位数之间出现，百位数没有数字时，thousand和十位数之间，and不省略4.小数点后面的数字按单个读。Matchthefactsyouknow.1aQomolangmatheNiletheCaspianSeatheSaharaabout9,000,000squarekilometersinsize1,025metersdeep6,671kilometerslong8,848.86metershigh=indepth=inlength=inheight

数字+单位词+形容词（long,wide,high,deep）=数字+单位词+in+名词（length,width,height,depth,size）1.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.Qomolangmais_____________thananyothermountainintheworld.TheSaharais_____________desertintheworld.TheCaspianSeais_______________ofallthesaltlakes.TheNileis_______________riverintheworld.higherthe

biggestthedeepestthelongestListenandcompletethesentences.1b=thehighestmountain=biggerthananyotherdesert=deeperthananyothersaltlake=longerthananyotherriver最高级：the+形容词/副词最高级+单数名词=形容词、副词比较级+than+anyother+单数名词形容词比较级方法指导形容词最高级2.Qomolangmaishigherthananyothermountainintheworld.比较级+thananyother+可数名词单数Point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。【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.anyotheranyTeacher:Yesterday,welearnedsomeimportantgeographical facts.Ihopeyouallstillrememberthem.I'mgoingtotest younowbyaskingafewquestions.First,what'sthe _________mountainintheworld?Boy2:Qomolangma!It'shigherthan__________________in theworld.Teacher:That'sright.AndwhocantellmewhattheSaharais？Girl1:TheSaharais________________intheworld.Teacher:Verygood.Andwhichisthedeepest________inthe world?Listenagainandfillintheblanks.highestanyothermountainthebiggestdesertsaltlakeGirl2:TheCaspianSeais____________allthesaltlakes.Teacher:You'reallsosmart！Now,forthelastquestion, whichis_____________intheworld?Boy1:Iknow!

_______isthelongestriverintheworld.Boy2:AndtheAmazonis_______________riverinthe world.Teacher:__________youknowtheanswerstoallmy questions.Goodjob！Listenagainandfillintheblanks.thedeepestofthelongestriverTheNilethesecondlongestItseemsthat“the+序数词+最高级+单数名词+in…”表示“是……中的第几……”Hi,Patrick!Whatareyoudoingthesedays?Oh,Iamtravelingaroundtheworld.Howexciting!Whatisthehighestmountainintheworld?It’sQomolangma.HowhighisQomolangma?It's8,848.86metershigh.Usetheinformationin1btomakeconversations.1cQomolangmatheNiletheCaspianSeatheSaharaHowmuchdoyouknowaboutChina?HowmuchdoyouknowaboutChina?historyfamousriverspopulationsizeover5,000yearsabout9,600,000squarekilometers1.3billionhasthelargestpopulationtheYellowRivertheYangtzeRiverListenandnumberthefacts[1-4]intheorderyouhearthem.6,300 5,000 5,464 300____TheYangtzeRiverisabout________kilometerslongandtheYellowRiveris________kilometerslong.____Chinahasthebiggestpopulationintheworld.It’salotbiggerthanthepopulationoftheUS.____Chinaisover________yearsold.IthasamuchlongerhistorythantheUS.TheUSisnoteven________yearsold.____ChinaisaboutthesamesizeastheUS,anditisthebiggestcountryinAsia.42132a6,300 5,000 5,464 300____TheYangtzeRiverisabout________kilometerslongandtheYellowRiveris________kilometerslong.____Chinahasthebiggestpopulationintheworld.It’salotbiggerthanthepopulationoftheUS.____Chinaisover________yearsold.IthasamuchlongerhistorythantheUS.TheUSisnoteven________yearsold.____ChinaisaboutthesamesizeastheUS,anditisthebiggestcountryinAsia.42132bListenagainandfillintheblanksin2awiththenumbersinthebox.6,3005,4645,0003003.Chinahasthebiggestpopulationintheworld.population

集体名词，“人口；人口数量”，

无复数形式。作主语时，谓语动词用第三人称单数形式。thepopulationof“……的人口数量”，人口“多”用large或big来修饰；

人口“少”用small来修饰。分数或百分数修饰population作主语时，谓语动词常用复数形式。询问人口数量：

What’sthepopulationof…?Howlargeisthepopulationof…?

不能用howmany或howmuch提问。你家乡的人口是多少？（翻译句子并写出同义句）What’sthepopulationofyourhometown?_________________________________________Howlargeisthepopulationofyourhometown?Mike：Hi,I’mMike.I’mfrom__________________.Boy：Welcometoourclass,Mike.We’rehappytomeetyou.Mike：Canyoutellme_______moreaboutChina?Girl：Sure!DidyouknowthatChinaisoneof__________

countriesintheworld?It’sover______yearsold.Mike：Yes,Idid.It’s_______________mycountry—infact,theUnitedStatesisoneof____________countriesintheworld.It’snoteven_____yearsold.Listenagainandfillintheblanks.theUnitedStatesabittheoldest5,000mucholderthantheyoungest3004.DidyouknowthatChinaisoneoftheoldestcountriesintheworld?

宾语从句表示的内容是客观事实、真理或自然现象等，从句要用一般现在时。Hetoldmethattheearthislargerthanthemoon.例：他告诉我地球比月球大。主句that

引导的宾语从句～～～～～～～～～～～～～～～～～～～～～～～～～～Boy：AndChinahas______________________,too.It’salotbiggerthanthepopulationoftheUnitedStates.Mike：ButChinaisabout_____________astheUS,right?Girl：Yes,andit’sthebiggestcountryinAsia.Wealsohavesomefamousrivers.________________isthelongestriverinAsia.It’sabout______kilometerslong.Mike：Wow!Ididn’tknowthat.I_______theYellowRiverwaslonger.Boy：No,theYellowRiveris5,464kilometerslong.But______riversareveryimportanttoChina.thebiggestpopulationthesamesizeTheYangtzeRiver6,300thoughtbothMakeconversationsusingtheinformationin2a.2CDidyouknowthatChinahasthebiggestpopulationintheworld?Yes,Idid.It’salotbiggerthanthepopulationoftheUS.......ConfidentHistoricIntelligentNobleAmbitionsCHINACh