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1、Unit7SectionAPeriod1(1a-2d)Doyouknowhowtoreadthesenumbers?8,844.43meters1,025metersdeep6,600kilometerslong6,211.31kilometerslong3,219kilometerswide大数的读法：从右至左，每三位数加一个逗号。第一个逗大数的读法：从右至左，每三位数加一个逗号。第一个逗号前的数为号前的数为thousand，第二个逗号前的数为，第二个逗号前的数为million（百万）（百万），第三个逗号前的数为，第三个逗号前的数为billion（十亿）。（十亿）。Whichisthehig
2、hestmountainintheworld?Whichisthelongestriverintheworld?Whichisthedeepestseaintheworld？Whichisthebiggestdesertintheworld？Doyouknowthis?QomolangmarunsalongtheborderbetweenChinaandNepal.Itiscoveredwithsnowalltheyearround.Its8,844.43metershigh,thehighestintheworld.Its26kilometerslong.TheSaharaisthebigg
3、estdesertintheworld.ItislocatedinthenorthernAfrica.Itsclimateconditionsareverybadandisoneoftheearthsmostunsuitableforbiologicalsurvival.TheCaspianSea(里海里海)isthebiggestinlandlakeintheworld.Themaxdepthis1,025m(inthesouthernpart).ItliesintheborderbetweenAsiaandEurope.TheNileisthelongestriverintheworld.
4、Itsmorethan6,600kilometerslong.Itrunsthrough9countries.ItsoneofthelargestriverflowingthroughtheinternationalstatesintheworldandrunsintotheMediterraneanSea(地中海地中海)intheend.TheYangtzeRiveristhethirdlongestriverintheworld,andthefirstAsianriver.Its6211.31kilometerslong.TheYangtzeRiverBasin,east-westwidt
5、hof3,219kilometers,about966kilometerswidenorth-south,passingthrough11provinces.ItrunsintotheEastSeainShanghaifinally.1aMatchthefactsyouknow.8,844.43metershigh.8,844米高米高基数词基数词+metershigh(long,wide,high，deep)米高米高(长，宽，高，深长，宽，高，深)英语表示英语表示“有多长有多长(宽，高宽，高)”时，一般时，一般将数词和数将数词和数量单位放在表示长宽高的形容词前作状语。量单位放在表示长宽高的形容
6、词前作状语。Thewallis1.7meterswide.A:HowhighisQomolangma?Thebiggestdesertintheworldisabout9,600,000squarekilometersinsize.HowbigistheSahara?B:Its8,844.43metershigh.Itsabout9,600,000squarekilometersinsize.1bListenandcompletethesentences.1.Qomolangmais_thananyothermountainintheworld.2.TheSaharais_desertinth
7、eworld.3.TheCaspianSeais_ofallthesaltlakes.4.TheNileis_riverintheworld.higherthebiggestthedeepestthelongestUsetheinformationin1btomakeconversations.1cA:Whatisthehighestmountainintheworld?B:Qomolangma.Practiceinpairslikethis:A:Whatistheinthe?B:Whatisthelongestriverintheworld?TheNile.Whatisthebiggestd
8、esertintheworld?TheSahara.WhatisthelongestriverinAsia?TheYangtzeRiver.Makesentenceswiththefollowingadjectivestodescribethings.thehighestthelongestthedeepestthebiggestSamplesIliveinthehighestbuildinginthecity.Meilihasthelongesthairintheclass.ThatswimmingpoolisthedeepestoneIveeverswamin.Wehavethebigge
9、stfieldofallthehighschoolsintown.6,3005,0005,464300Practicereadingthefollowingfournumbers.Whichisthebiggestnumber?Whichisthesmallestnumber?2aListenandnumberthefacts1-4intheorderyouhearthem._TheYangtzeRiverisabout_kilometerslongandtheYellowRiveris_kilometerslong._Chinahasthebiggestpopulationintheworl
10、d.ItsalotbiggerthanthepopulationoftheUS.6,3005,0005,46430042_Chinaisover_yearsold.IthasamuchlongerhistorythantheUS.TheUSisnoteven_yearsold._ChinaisalmostasbigastheUS,butitisthebiggestcountryinAsia.13Listenagainandfillintheblanksin2awithnumbersinthebox.2b_TheYangtzeRiverisabout_kilometerslongandtheYe
11、llowRiveris_kilometerslong._Chinahasthebiggestpopulationintheworld.ItsalotbiggerthanthepopulationoftheUS.6,3005,464_Chinaisover_yearsold.IthasamuchlongerhistorythantheUS.TheUSisnoteven_yearsold._ChinaisalmostasbigastheUS,butitisthebiggestcountryinAsia.5,000300Makeconversationsusingtheinformationin2a
12、.2cA:DidyouknowthatChinaisoneoftheoldestcountriesintheworld?B:Yes,Idid.Itsmucholderthanmycountry.温馨提示：温馨提示：Didyouknow?是一般过去时态，问是一般过去时态，问你过去是否知道。你过去是否知道。Doyouknow?是一般现在时态，问是一般现在时态，问你目前是否知道。你目前是否知道。或者说，当你真正在提问时，问对方知或者说，当你真正在提问时，问对方知不知道一件事情，用不知道一件事情，用Doyouknow.?当你用疑问语气而真正想告诉对方一个当你用疑问语气而真正想告诉对方一个事实，用事实，
13、用Didyouknow.?A:DidyouknowthatYangtzeRiveristhelongestriverinChina?B:Yes,Idid.Its6,300meterslong.A:Wow!Thatslong!A:DidyouknowthatChinahasthebiggestpopulationintheworld?B:Yes,Idid.ItsalotbiggerthanthepopulationoftheUS.A:Wow!Thatsamazing!2d1.Whatistheconversationabout?2.HowlongistheMingGreatWall?Itsabo
14、utatourtotheMingGreatWall.Itsabout8,850kilomoterslong.中国的长城共有近一万公里，东起河北秦皇岛的中国的长城共有近一万公里，东起河北秦皇岛的山海关，西到嘉峪关，这是明代修筑长城的两个最山海关，西到嘉峪关，这是明代修筑长城的两个最大关口，北京境内的长城有大关口，北京境内的长城有600余公里，比较著名余公里，比较著名的有八达岭长城、金山岭长城、司马台长城、慕田的有八达岭长城、金山岭长城、司马台长城、慕田峪长城、居庸关长城和箭扣长城等。峪长城、居庸关长城和箭扣长城等。The Great Wall 慕田峪长城慕田峪长城Makeadialogue,ta
15、lkingaboutaplaceofinterest.Oneactsastheguideandtheotherthetourist.Use2dasanexample.Read the words and expressions loudly.QomolangmatheNiletheCaspianSeatheSaharatheYangtzeRivertheYellowRivertheMingDynastytheMingGreatWall珠穆朗玛峰珠穆朗玛峰尼罗河尼罗河里海里海(世界最大的咸世界最大的咸水湖水湖)撒哈拉沙漠撒哈拉沙漠长江长江黄河黄河明朝明朝明长城明长城squaremeterdeep
16、desertpopulationAsiafeelfreetourn.平方；正方形平方；正方形n.米；公尺米；公尺adj.深的；纵深的深的；纵深的n.沙漠沙漠n.人口；人口数量人口；人口数量n.亚洲亚洲(可以可以)随便随便(做某事做某事)n.v.旅行；旅游旅行；旅游touristwallamazingancientprotectwideasfarasIknown.旅行者；观光者旅行者；观光者n.墙墙adj.令人大为惊奇的令人大为惊奇的;令人惊喜令人惊喜(或惊叹或惊叹)的的adj.古代的；古老的古代的；古老的v.保护；防护保护；防护adj.宽的；宽阔的宽的；宽阔的就我所知就我所知1.Chinaha
17、sthebiggestpopulationintheworld.populationn.人口；人口数量人口；人口数量Thepopulationofthiscityissixmillion这个城市的人口是这个城市的人口是600万。万。ThepopulationofChinaismuchlargerthanthatoftheUSA.中国的人口比美国的人口多很多。中国的人口比美国的人口多很多。population作主语的时候，谓语动词通常用作主语的时候，谓语动词通常用单数形式；当主语是表示单数形式；当主语是表示“人口的百分之几、人口的百分之几、几分之几几分之几”时，谓语动词用复数形式。时，谓语动词用
18、复数形式。询问人口数量时要用询问人口数量时要用“Whatsthepopulationof.?”提问，而不用提问，而不用howmany或或howmuch等提问。等提问。表示人口表示人口“多多”要用要用large或或big；表示人口；表示人口“少少”要用要用small。1).ThepopulationofShanghaiis_thanthatofGuiyang.A.smallerB.largerC.lessD.large2).-_isthepopulationofthetown?-Over20,000.Andathirdofthepopulation_workersofthecarfactory.
19、A.What,areB.Howmany,areC.What,isD.Howmany,isBA3).Whichcityhas_population,Beijing,GuiyangorXingyi?Xingyi,ofcourse.A.thelargestB.thesmallestC.themostD.theleast4).-_thepopulationofChina?-1.3billion.EveryoneknowsChinahasthe_populationintheworld.A.Whatare,mostB.Whatis,largestC.Howmanyare,mostD.Howmanyare
20、,largestBB2.FeelfreetoaskmeanythingontodaysGreatWalltour.feelfree是英语口语中一个常用表达。是英语口语中一个常用表达。feelfreetodosth.，让你无需拘束，只管按照，让你无需拘束，只管按照自己的意愿去做某事。自己的意愿去做某事。A:CanIuseyourbathroom?我可以用一下你的卫生间吗？我可以用一下你的卫生间吗？B:Yes,feelfree.可以，请随意。可以，请随意。Iamnothungry.Feelfreetoeatmyapple.我不饿。你想吃我的苹果就吃吧。我不饿。你想吃我的苹果就吃吧。Feelfree
21、tocontactmeifyoustillneedanyhelp.如果还需要帮忙，尽管联系我。如果还需要帮忙，尽管联系我。asfarasIknow是一个固定的表达方式，是一个固定的表达方式，还可以说还可以说sofarasIknow，意思是，意思是“据我据我所知所知”。2.AsfarasIknow,therearenoman-madeobjectsasbigasthis.AsfarasIknow,Jacksgottwinsisters.就我所知，杰克有一对孪生姐妹。就我所知，杰克有一对孪生姐妹。Theyrenotcomingtoday,sofarasIknow.他们今天不来了，就我所知是这样的。
22、他们今天不来了，就我所知是这样的。AsfarasIknow,hewillbeawayforthreemonths.据我所知据我所知,他将离开三个月。他将离开三个月。man-madesatellite人造卫星人造卫星Nylonisaman-madefibre.尼龙是一种人造纤维。尼龙是一种人造纤维。man-made是是合成形容词合成形容词，类似的与，类似的与-made合成的形容词还有：合成的形容词还有：ready-made(现成的；现成的；做好的做好的),hand-made(手工的手工的),homemade(自制的自制的),tailor-made(量体定制的量体定制的)等。等。man-madeadj.人造的，人工的，合成的人造的，人工的，合成的feelfreethemostpopularquestiontalkabouttheMingDynastytheancientemperorsthemainreasonasfarasIknowtheMingGreatWallHowlongisthewall?Itsabout8,850kilometerslong.Thismakesitthelongestwallintheworld.Itsthemostfamouspart.