Unit7+SectionA+1a-2d++课件【知识点睛+备课精研】 人教版八年级英语下册

人教版英语

Unit7What’sthehighestmountainintheworld?SectionA

1a-2d人教版英语1.Rememberthekeywords,phrasesandsentences.

square,meter,deep,desert,population,Asia,tour,tourist,wall,amazing,ancient,protect,wide,man-made,feelfree,asfarasIknow,insize背诵重点词汇，短语【重点】2.Tolearntousecomparativesandsuperlativeswithadjectivesandadverbs.学习使用形容词和副词的比较级和最高级【重点，难点】Learninggoalshundred百thousand千million百万billion十亿1,764,600,220Leadin规则：从前往后，每三位一划分，百位后面加andonebillion,sevenhundredand

sixty-fourmillion,sixhundredthousand,twohundredandtwentyHowdoyoureadlargenumbers?Canyoureadtheselargenumbers?9,600,0001,0256,6718,844.43ninemillion,sixhundredthousandonethousandand

twenty-fivesixthousand,sixhundredand

seventy-oneeightthousand,eighthundredand

forty-fourpointfourthreeLeadinhundred百thousand千million百万billion十亿point点这些数字是描述谁的？QomolangmatheNiletheCaspianSeatheSaharathehighestmountainintheworldDoyouknow?thelongestriverintheworldthebiggestlakeintheworldthebiggestdesert(沙漠)intheworldLeadinMatchthefactsyouknow.1aQomolangmaAbout9,600,000square

kilometersinsizeTheSahara1,025metersdeepTheCaspianSea6,671kilometerslongTheNile8,844.43metershighPre-listening你能总结长、宽、高、深、面积的表达结构吗？

数字+单位词+形容词（long,wide宽的,high,deep深的）=数字+单位词+in+名词（length长度,width宽度,height高度,depth深度,size）Theriveris20meterswide.=Theriveris20metersinwidth.这条河宽20米【拓展】作定语时用：“数词–单位词单数–形容词”This20-meter-wideriverisnearourschool.这条20米宽的河流在我们学校附近。平方metern.米adj.深的在大小/尺寸方面千米Qomolangmais_____________thananyothermountainintheworld.TheSaharais_____________desertintheworld.TheCaspianSeais_______________ofallthesaltlakes.TheNileis_________________riverintheworld.Listenandcompletethesentences.1bhigherthe

biggestthedeepestthelongestn.沙漠While-listening注意听前读句子，预测空格内容。盐水湖Post-listeningListenandread.(P.103)Teacher:Yesterday,welearnedsomeimportantgeographical

facts.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!找出包含比较级、最高级的句子地理的事实通过theanswertoA:A的答案the+序数词+最高级：第几……的比较级表达最高级含义

比较级+than+anyother+可数名词单数：“比其他任何都...”=比较级

+than+theother+

可数名词复数：=最高级+可数名词单数尼罗河比世界上其他任何一条河都长。TheNileislongerthananyotherriverintheworld.=TheNileislongerthantheotherriversintheworld.=TheNileisthelongestriverintheworld.—DoyouknowXinjiangis______inChina?—Yes,it’sbiggerthan______cityinChina.A.thebiggestcity;anyB.thebiggestcity;theotherC.thebiggestcity;anyotherC6,3005,0005,465300Readthenumbers.sixthousandand

threehundredfivethousandfivethousand,fourhundredand

sixty-fivethreehundredPre-listeninghundred百thousand千million百万billion十亿point点Listenandnumberthefacts[1-4]intheorderyouhearthem.2a6,300 5,000 5,464 300____TheYangtzeRiverisabout________kilometerslongandtheYellowRiveris________kilometerslong.____Chinahasthebiggestpopulationintheworld.It’salotbiggerthanthepopulationoftheUS.____Chinaisover________yearsold.IthasamuchlongerhistorythantheUS.TheUSisnoteven________yearsold.____ChinaisalmostasbigastheUS,anditisthebiggestcountryinAsia.4213Asia

亚洲Asian亚洲的，亚洲人长江While-listening注意听前读句子，留下印象人口Listenagainandfillintheblanksin2awiththenumbersinthebox.2b6,300 5,000 5,464 300____TheYangtzeRiverisabout________kilometerslongandtheYellowRiveris________kilometerslong.____Chinahasthebiggestpopulationintheworld.It’salotbiggerthanthepopulationoftheUS.____Chinaisover________yearsold.IthasamuchlongerhistorythantheUS.TheUSisnoteven________yearsold.____ChinaisalmostasbigastheUS,anditisthebiggestcountryinAsia.6,3002135,4645,0003004While-listening直接写数字即可Listenandread.(P.103)Post-listeningMike：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.找出比较级、最高级的句子；找出修饰比较级程度的词修饰比较级：abit,alittle,much,alot,evenoneof+the+最高级+名词复数：最...的之一人口population的用法1.意为“人口”，集体名词，谓语动词用单数。Thepopulationoftheworldisgrowingfasterandfaster.世界人口增长得越来越快。2.询问A有多少人口:

WhatisthepopulationofA?=HowmanypeoplearethereinA？3.表示A有....人口：

Ahave/hasapopulationof+数词=thepopulationofAis+数词Chinahasapopulationof1.4billion.中国有14亿人。

=ThepopulationofChinais1.4billion.4.表示人口的“多”和“少”：large/big，small。Indiahasalargepopulation.印度人口众多。Canyoufindanymistakesintheunderlinedsentences?

Guide:Feelfreetoaskmeanythingontoday'sGreatWalltour.Tourist1:Howlongisthewall?Guide:Ah,mostpopularquestion!

Ifwe'reonlytalkaboutthepartsfromtheMingDynasty,it'sabout8,850kilometerlong.Thismakeitthelongestwallintheworld.Tourist2:Wow,that'samazed!Whydidtheancientemperorsbuildthewall?Guide:Themainreasonwastoprotecttheirpartofthecountry.Asyoucansee,it'squitetallandwide.AsfarasIknow,therearenootherman-madeobjectsasbiggerasthis.Tourist3:IsBadalingpartoftheMingGreatWall?Guide:Yes,it'sthemostfamouspart.talkingthekilometersmakesamazingbigGuide:Feelfreetoaskmeanythingontoday'sGreatWall

tour.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.Readandtranslatetheconversation.2d导游可以随便做某事长城n.&v.旅行游客墙朝代adj.令人惊奇的adj.古代的；古老的保护正如相当宽的就我所知adj.人造的物品一部分amazed

adj.感到惊奇的amazev.使惊奇amazing

adj.令人惊奇的protect的用法1.protectsth.保护某物

2.