Unit7SectionA1a-2d课件-人教版八年级英语下册

Unit7What’sthehighestmountainintheworld?SectionA1a-2dAskandanswer-geographicalfactsWhichisthebiggest

continentintheworld?A.Europe(欧洲) B.Asia(亚洲) C.NorthAmerica

(北美洲) D.Africa(非洲)Whichisthebiggestocean

intheworld?A.theArcticocean(北冰洋) B.theAtlanticocean(大西洋) C.theIndianocean

(印度洋) D.thePacific

ocean(太平洋)Whichisthehighestplateau(高原)intheworld?A.Qinghai-TibetPlateau

(青藏高原)B.PamirPlateau(帕米尔高原) C.Boliviaplateau(玻利维亚高原)learnmoregeographicalfactsQomolangmaabout9,000,000squarekilometersinsizeTheSahara1,025metersdeepTheCaspianSea6,671kilometerslongTheNile8,848.86metershigh1a.Matchthefactsyouknow.平方千米面积面积大约900万平方千米1025米深6671千米长8848.86米高大约Languagepoints长、宽、高、深等的表达法Howhigh

isit?=What’stheheightof

it?It’s8,848.86metershigh.It’s8,848.86metersinheight.Howlong

isit?=What’sthelength

of

it?It’s6,671

kilometerslong.It’s6,671

kilometersinlengh.Howdeepisit?=What’sthedepth

of

it？It’s1,025metersdeep.It’s1,025metersindepth.Howbig

isit?=What’sthesize

ofit?It’sabout

9,000,000squarekilometersinsize.Ask:Howlong/wide/high/deep/big+be+主语?Answer:长宽高大小深基数词+单位词+形容词(long,wide,high,deep)基数词+单位词+in+名词(length,width,height,depth,size)Languagepoints长、宽、高、深等的表达法主语+be+【拓展延伸】复合形容词作定语:“数词-单位词单数-形容词”20-meter-long20米长的What’sthe

length/width/height/depth/size+of+主语?LanguagepointsHowtowriteandreadlargenumbers?TheCaspianSeais1,025

meters

deep.TheNileis6,671

kilometers

long.Qomolangmais8,848.86

meters

high.

TheSaharaisabout9,000,000

squarekilometersinsize.onethousandandtwenty-fivesixthousandandseventy-onesixhundredeightthousandandforty-eighteighthundredpointeightsixninemillionLanguagepoints2,506,981,065.34Step2:

从右到左，小数点读“point”，第一个“,”读thousand(千),

第二个“,”读million(百万)，第三个“,”读billion(十亿)。Step1:

从小数点开始从右到左，每3个数加一个“,”。Step3：每隔三位分段以后就都成了101

-999。读的时候按百位数读。从左到右读数，百位和十位之间加and，若十位为0，and不省略，若百位为0，thousand和十位之间加and，小数点后面的数只读数字，不读数位。billionpointthousandmillionandandandtwo

billion

fivehundredand

six

million

ninehundredand

eighty-one

thousand

and

sixty-five

point

three

fourHowtowriteandreadlargenumbers?1b.Listenandcompletethesentences.Qomolangmais_______thananyothermountainintheworld.TheSaharais___________desertintheworld.TheCaspianSeais___________ofallthesaltlakes.TheNileis___________riverintheworld.higherthe

biggestthedeepestthelongest当我们想表达“主语是...中最...的”的时候可以用句型:主语+be+the+adj.的最高级+(单名)+of/in短语.主语+be+adj.的比较级+thananyother+单数名词+of/in短语.主语+be+adj.的比较级+thantheother+复数名词+of/in短语.intheworld世界上咸水湖Teacher:Yesterday,welearnedsomeimportantgeographicalfacts.Ihopeyouallstillrememberthem.I’mgoingtotestyounowbyaskingafewquestions.First,what’sthehighestmountainintheworld?Boy1:Qomolangma!It’shigherthananyothermountainintheworld.Teacher:That’sright.AndwhocantellmewhattheSaharais?Girl1:TheSaharaisthebiggestdesertintheworld.Teacher:Verygood.Andwhichisthedeepestsaltlakeintheworld?Girl2:TheCaspianSeaisthedeepestofallthesaltlakes.Teacher:You’reallsosmart!Now,forthelastquestion,whichisthelongestriverintheworld?Boy2:Iknow!TheNileisthelongestriverintheworld.Boy1:AndtheAmazonisthesecondlongestriverintheworld.Teacher:Itseemsthatyouknowtheanswerstoallmyquestions.Goodjob!Readandunderlinethesuperlatives.地理事实介词；通过最后一个问题the+序数词+形容词最高级第几…的answerstoquestions问题的答案好像；似乎1c.Usetheinformationin1btomakeconversations.Qomolangma8,848.86meters

hightheNile6,671meters

longtheSahara9,000,000squarekilometerstheCaspianSea1,025metersdeepA:What/Whichisthe__________intheworld?B:It’s_____________.A:How______isit?B:It’s_________________________.

It’soneoftheoldestcountriesintheworld.

Ithasalonghistory.It’sbeenaroundforover5,000years.Howlonghasitbeenthere?DoyouknowanygeographicalfactsaboutChina?DoyouknowanygeographicalfactsaboutChina?What’thesizeof

it?It’sabout9,600,000squarekilometersinsize.It’sthebiggestcountryinAsia.It’sthethirdbiggestcountryintheworld.Asian.亚洲DoyouknowanygeographicalfactsaboutChina?Ithasthebiggestpopulationintheworld.WhatisthepopulationofChina?It

hasapopulationof1,400,000,000.DoyouknowanygeographicalfactsaboutChina?theYangtzeRivertheYellowRiverWhataretheimportantriversinChina?

Itis6,300kilometerslong.TheYangtzeRiveristhelongestriverinChina.Itis5,464kilometerslong.TheYellowRiveristhesecondlongestriverinChina.sixthousandthreehundredfivethousandfourhundredandsixty-fourMikeisfromtheUSA,hewantstoknowalotmoreaboutChina.Listentotheconversationbetweenhimandhisclassmates.2a.Listenandnumberthefacts[1-4]intheorderyouhearthem.4213aboutthesamesizeas2b.Listenagainandfillintheblanksin2awiththenumbersinthebox.42136,3005,4645,000300

n.亚洲Asiann.亚洲人

长江黄河人口最多

much/alot/far+比较级

...得多

…的人口aboutthesamesizeas

thesame…as…和…一样Languagepointspopulationpopulationn.人口；人口数量。是集体名词，在句中作主语时，谓语动词用单数形式。population之前若有分数修饰做主语时，谓语动词则可用复数形式.表示有多少人口时，用“have/hasapopulationof+数词”或“thepopulationof…is+数词”。询问人口多少时，用“Whatisthepopulationof…?”或“Howlargeisthepopulationof…?”。Languagepointspopulation表示人口多少时，用big/large或small修饰，而不能用many,much或few等。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。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.Readandunderlinethesuperlatives.behappytodosth.开心做某事abit/alittle+比较级...一点儿oneofthe+adj.最高级+复数名词最…之一事实上beimportantto…对…重要2c.Makeconversationsusingtheinformationin2a.Example:Chinaisoneoftheoldestcountriesintheworld.It’sover5,000yearsold.IthasmuchlongerhistorythantheUS.TheUSisnoteven300yearsold.Chinahasthebiggestpopulationintheworld.It’salotbiggerthanthepopulationoftheUS.ChinaisalmostasbigastheUS.ButitisthebiggestcountryinAsia.TherearetwofamousriversinChina.OneistheYangzeRiver,theotheristheYellowRiver...

ImagineyouareMike,trytogiveareportbyusingtheinformationin2b.ThedifferencesbetweenChinaandtheUSReporttimeIknowalotaboutChina.NowIamvisitingtheGreatWall.2d.Role-playtheconversation.Guide:Feelfreetoaskmeanythingontoday’sGreatWalltour.Tourist1:Howlongisthewall?Guide:Ah,themostpopularquestion!Ifwe’reonlytalkingaboutthepartsfromtheMingDynasty,it’sabout8,850kilometerslong.Thismakesitthelongestwallintheworld.Tourist2:Wow,that’samazing!Whydidtheancientemperorsbuildthewall?Guide:Themainreasonwastoprotecttheirpartofthecountry.Asyoucansee,it’squitetallandwide.AsfarasIknow,therearenootherman-madeobjectsasbigasthis.Tourist3:IsBadalingpar