+Unit+7+Section+A+2a-2d+第二课时+课件【高效课堂精研】人教版八年级英语下册

Unit7What’sthehighestmountainintheworld?SectionA2a-2dLearningobjectivesStudentscanmasterkeywords&phrases:Asia,feelfree,tour,tourist,wall,amazing,ancient,protect,wide,asfarasIknow,man-made,oneoftheoldestcountries,as...as.thesameas

StudentscanlearnsomethingaboutChina,includingsize,population,history,famousrivers,theGreatWallandsoon.Atthesametime,theycanbuildstrongprideasaChinese.Studentscanusethecomparativeandsuperlativecorrectlyincontent.WhatdoyouknowaboutChina?QUICKRESPONSEWhat’sthebiggestwaterfallinChina?HuangguoshuWaterfallisthebiggestwaterfallinChina.Round1What’sthethelongestriverinChina?TheYangtzeRiveristhelongestriverinChina.Round2长江What’sthethesecondlongestriverinChina?TheYellowRiveristhesecondlongestriverinChina.Round3What’sthethelongestwallinChina?TheGreatWallisthelongestwallinChina.Round5What’sthethebiggestdesertinChina?TheTaklimakandesertisthebiggestdesertinChina.Round4塔克拉玛干沙漠What’sthesizeofChina?About9,600,000squarekilometersinsize.Round6It's

thebiggestcountry

inAsia.亚洲HowoldisChina?Over5000yearsoldRound7It'soneoftheoldestcountriesintheworld.Hi,I’mMike.I’mfromtheUnitedStates.MikewantstoknowmoreaboutChina._______TheYangtzeRiverisabout______kilometerslongandtheYellowRiveris______kilometerslong.________Chinaisover________yearsold.IthasamuchlongerhistorythantheUS.TheUSisnoteven________yearsold._______ChinaisbiggerthantheUS,andit’sthebiggestcountryinAsia.2aMatchthefactswiththekeywords.size,

historyrivers,rivershistorysize

2aListenandnumberthefacts[1-3]intheorderyouhearthem.6,3005,0005,464300_______TheYangtzeRiverisabout______kilometerslongandtheYellowRiveris______kilometerslong.________Chinaisover________yearsold.IthasamuchlongerhistorythantheUS.TheUSisnoteven________yearsold._______ChinaisbiggerthantheUS,andit’sthebiggestcountryinAsia.3126,3005,0005,464300fivethousand,fourhundredandsixty-fourfivethousandthreehundredsixthousand,threehundredCanyoureadthebignumbers?2bListenagainandfillintheblanksin2awiththenumbersinthebox._______TheYangtzeRiverisabout______kilometerslongandtheYellowRiveris______kilometerslong.________Chinaisover________yearsold.IthasamuchlongerhistorythantheUS.TheUSisnoteven________yearsold._______ChinaisbiggerthantheUS,andit’sthebiggestcountryinAsia.6,3005,0005,4643003126,3005,4645,000300Mike:Hi,I'mMike.I’mfromtheUnitedStates.Boy:Welcometoourclass,Mike.We'rehappytomeetyou.

Mike:CanyoutellmeabitmoreaboutChina?Girl:Sure!DidyouknowthatChinaisoneof_________________intheworld?It'sover5,000yearsold.

Mike:Yes,Idid.It's__________thanmycountry——infact,theUnitedStatesisoneoftheyoungestcountriesintheworld.It'snoteven300yearsold.Boy:AndChinais________thantheUnitedStates.Girl:Yes,andit'sthebiggestcountryin_____.Wealsohavesomefamousrivers.TheYangtzeRiveris_______________inAsia.It'sabout6,300kilometerslong.

Mike:Wow!Ididn'tknowthat.IthoughttheYellowRiverwaslonger.

Boy:No,theYellowRiveris5,464kilometerslong.ButbothriversareveryimportanttoChina.theoldestcountriesmucholderthelongestriverbiggerAsiaChinaisoneoftheoldestcountriesintheworld.TheUSisoneoftheyoungestcountriesintheworld.mucholderIt’sabout9,370,000squarekilometersinsize.It’sthebiggestcountryinAsia.alittlebiggerVSoneof+the+最高级+n复数

最……之一much/alot/far/evenalittle/abit修饰比较级。historyItisoverIt’soneof...Itismucholderthan.

sizeIt’sthebiggest...riverTheYangtzeRiveristhelongest...It’s....TheYellowRiveristhesecond...It’s……RetellChinaisagreatcountry.guiden.导游touristn.旅客Infact,theGreatWallisoneofthemostfamousplacesofinterest.TheGreatWallwecanseetodaycamefromtheMingDynasty.Ancientemperorsbuiltthewalltoprotectthecountry.['eɪnʃənt]adj.古代的

['eɪnʃənt]v.保护明朝Readtheconversationbetweenthetouristsandtheguideandanswerthequestions.1.Whatistheconversationabout?It’saboutatourtotheMingGreatWall.2.HowlongistheMingGreatWall?It’sabout8,850kilometerslong.3.Whydidtheancientemperorbuildthewall?Themainreasonwastoprotecttheirpartofthecountry.Whatdidtheguidesayaboutthewall?It'squitetallandwide.Theancientemperorsbuiltittoprotecttheirpartsofthecountry.Therearenootherman-madeobjectsasbigasthis.BadalingisthemostfamouspartoftheMingGreatWall.It'sthelongestwallintheworldadj.人造的WearesoproudofChina.

Guide: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。

adj.令人大为惊奇的；令人惊喜（惊叹）的Expressions2dGuide:Themainreasonwastoprotecttheirpartofthecountry.Asyoucansee,it'squitetallandwide.AsfarasIknow,therearenootherman-madeobjectsasbigasthis.Tourist3:IsBadalingpartoftheMingGreatWall?Guide:Yes,it'sthemostfamouspart.

据我所知不定式短语作表语Expressions2das+原级+asRole-playtheconversation2dGuide: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:IsBadalingpartoftheMingGreatWall?Guide:Yes,it'sthemostfamouspart.Nowlet’stalkabouttheGreatWall.ThepartsfromtheMingDynastyisabout8,850kilometerslong.Thismakesit___________________________The_________________builtitto_______theirpartofthecountry.Itisquite___________andtherearenoother__________objects_________this.Badalingis__________________oftheMingGreatWall.thelongestwallintheworldprotecttallandwideman-madeasbigasFillintheblankstoretell2dancientemperorsthemostfamouspart1.Chinahasthebiggestpopulationintheworld.①population是集体名词，在句中作主语时，谓语动词用单数形式。Thepopulationoftheworldcontinuestoincrease（增长）,butinsomeareasthepopulationisfalling.Languagepoints②表示有多少人口时，用“have/hasapopulationof+数词”，或“thepopulationof…is+数词”。Chinahasapopulationofabout1.4billion.=ThepopulationofChinaisabout1.4billion.③询问人口多少时，用“Whatisthepopulationof…”或“Howlargeisthepopulationof…”。What/HowlargeisthepopulationofHenanProvince?④表示人口多少时，用big/large或small修饰，而不能用many，much或few等。Indiahasalargepopulation.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。2.Feelfreetoaskmeanythingontoday’sGreatWalltour.tour在此处作可数名词，还可以作动词。TheywentonatouraroundEuropelastyear.(n.)WetouredItalyforourholidaylastyear.(v.)【拓展延伸】tour(v.)+后缀-ist→tourist(n.)旅行者；观光者Thetourists(n.)toured(v.)HongKongforholidays.Theyallenjoyedtheirtour(n.).tourn.&v.旅行；旅游3.Wow,that’samazing.amazing一般用于修饰事物，amazed（感到惊奇的）常用于修饰人。

beamazedat意为“对……感到惊讶”。Theamazingmagicshowmademefeelsoamazed.I’mamazedathisrapidprogress.amazingadj.令人大为惊奇的；令人惊喜（惊叹）的【拓展延伸】类似的以-ing（令人……），-ed（感到……）结尾的形容词：interesting/interested,surprising/surprised,relaxing/relaxed,moving/moved,tiring/tired,boring/bored,exciting/excited,…6.Themainreasonwastoprotecttheirpartofthecountry.protect此处用作及物动词，protect…against/from…“保护……免于……”。protection作为不可数名词，意为“保护；防卫”。Arewedoingenoughtoprotecttheenvironment?Hewearsascarftoprotecthimselfagainst/fromthestrongwind.It’sparents’dutytoprovideprotectionfortheirchildren.protectv.保护；防护1.—______isthepopulationofChinanow,Jack?—Letmethinkforamoment;itisabout______.A.Howmany;1,400million B.What;1,400millionC.What;140million D.Howmany;140million2.—The5Gtechnologycanhelpdoctorstreatpatientswhoarehundredsofkilometersaway.