Unit7SectionA2a-2d课件人教版八年级英语下册

Unit7

What'sthehighestmountainintheworld?SectionA2a-2dHowmuchdoyouknowaboutChina?historypopulation人口area面积theYangtzerivertheYellowriver1.HowoldisChina?It’sover5,000yearsold.2.What’sthelongestriverinChina?TheYangtzeRiver.3.What’sthelongestwallinChina?TheGreatWall.4.What’sthebiggestdesertinChina?Taklimakandesert.5.What’sthebiggestwaterfallinChina?HuangguoshuWaterfall.HowmuchdoyouknowaboutChina?Pre-listening630050005465300Readthenumbers.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.135,000300Listenagainandfillintheblanks.theUnitedStatesabittheoldest5,000mucholderthantheyoungest300Boy：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.thebiggestpopulationthesamesizeTheYangtzeRiver6,300thoughtbothChinahasthebiggestpopulationintheworld.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?4.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～～～～～～～～～～～～～～～～～～～～～～～～～～Pleasereadtheconversationin2d.What’stheconversationabout?It’saboutatourtotheMingGreatWall.Readtheconversationin2dandanswerthequestions.1.Whatistheconversationabout?It’saboutatourtotheMingGreatWall.2.HowlongistheMingGreatWall?It’sabout8,850kilometerslong.3.Whatdoestheguidesayaboutthewall?It’squitetallandwide.It’sthelongestwallintheworld.Therearenoman-madeobjectsasbigasthis.

…themainreasontobuildthemostfamouspartabout8,850kilometerslongprotecttheirpartofthecountryReadtheconversationandfillinthetable.TheMingGreatWallthelengthBadalingRole-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Fillintheblanks.Guide:

toaskmeanythingontoday'sGreatWalltour.Tourist1:

isthewall?Guide:Ah,themostpopularquestion!Ifwe'reonly

thepartsfromtheMingDynasty,it'sabout8,850kilometerslong.This______itthelongestwallintheworld.Tourist2:Wow,that'samazing!Whydidtheancientemperorsbuildthewall?Guide:The

wastoprotecttheirpartofthecountry.___________________,it’squitetallandwide.

,therearenootherman-madeobjectsasbigasthis.Tourist3:IsBadaling

theMingGreatWall?Guide:Yes,it'sthemostfamouspart.FeelfreeHowlongtalkingaboutmakesmainreasonAsyoucanseeAsfarasIknowpartof1.Thep________inourhometownisverylarge.2.Wet____bycareverysummer.3.Wehavetomakeplanstop_____theendangeredan