Unit7What'sthehighestmountainintheworldSectionA1a-2c課件人教版八年級英語下冊

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

Step1Step2Step3Step4Step5目錄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.要讀一組長數(shù)字，可以先把這組數(shù)字分3個數(shù)字一組用逗號隔開。2.把長數(shù)字分為3個數(shù)字一組，用逗號隔開，從右到左，把第一個逗號看作thousand，第二個逗號看作million,第三個逗號是billion。英語里沒有萬和十萬的表達，一萬：tenthousand十萬：onehundredthousand3.“and”在十位數(shù)和百位數(shù)之間出現(xiàn)，百位數(shù)沒有數(shù)字時，thousand和十位數(shù)之間，and不省略4.小數(shù)點后面的數(shù)字按單個讀。Matchthefactsyouknow.1aQomolangmatheNiletheCaspianSeatheSaharaabout9,000,000squarekilometersinsize1,025metersdeep6,671kilometerslong8,848.86metershigh=indepth=inlength=inheight

數(shù)字+單位詞+形容詞（long,wide,high,deep）=數(shù)字+單位詞+in+名詞（length,width,height,depth,size）1.長、寬、高、深、面積的表達方法Theriveris20meterswide.=Theriveris20metersinwidth.基數(shù)詞+單位詞+形容詞（long,wide,high,deep等）基數(shù)詞+單位詞+in+名詞（length,width,height,depth,size等）【拓展延伸】作定語時用合成詞“數(shù)詞-單位詞單數(shù)–形容詞”。This20-meter-longropeisn’tlongenoughtohelpclimbthemountain.Qomolangmais_____________thananyothermountainintheworld.TheSaharais_____________desertintheworld.TheCaspianSeais_______________ofallthesaltlakes.TheNileis_______________riverintheworld.higherthe

biggestthedeepestthelongestListenandcompletethesentences.1b=thehighestmountain=biggerthananyotherdesert=deeperthananyothersaltlake=longerthananyotherriver最高級：the+形容詞/副詞最高級+單數(shù)名詞=形容詞、副詞比較級+than+anyother+單數(shù)名詞形容詞比較級方法指導形容詞最高級2.Qomolangmaishigherthananyothermountainintheworld.比較級+thananyother+可數(shù)名詞單數(shù)Point該結構意為“比其他任何一個……都……”，指同一范圍內(nèi)比較，表示最高級含義。Sheisthinnerthananyotherstudentinherclass.=Sheisthethinnestinherclass.other必不可少，用以將主語從比較對象中排除，避免邏輯矛盾?！咎貏e提醒】如果比較對象不在同一范圍內(nèi)或不屬于同一類別，應用“形容詞/副詞比較級+thanany（任何的）

+可數(shù)名詞單數(shù)”。ThePacificOceanislargerthananylakeintheworld.練一練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+序數(shù)詞+最高級+單數(shù)名詞+in…”表示“是……中的第幾……”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

集體名詞，“人口；人口數(shù)量”，

無復數(shù)形式。作主語時，謂語動詞用第三人稱單數(shù)形式。thepopulationof“……的人口數(shù)量”，人口“多”用large或big來修飾；

人口“少”用small來修飾。分數(shù)或百分數(shù)修飾population作主語時，謂語動詞常用復數(shù)形式。詢問人口數(shù)量：

What’sthepopulationof…?Howlargeisthepopulationof…?

不能用howmany或howmuch提問。你家鄉(xiāng)的人口是多少？（翻譯句子并寫出同義句）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?

賓語從句表示的內(nèi)容是客觀事實、真理或自然現(xiàn)象等，從句要用一般現(xiàn)在時。Hetoldmethattheearthislargerthanthemoon.例：他告訴我地球比月球大。主句that

引導的賓語從句～～～～～～～～～～～～～～～～～～～～～～～～～～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