人教版八年级下册第七单元Section-A1

Unit7SectionAPeriod1(1a-2d)Whichisthehighestmountainintheworld?Whichisthelongestriverintheworld?…Doyouknowthis?Qomolangma

Qomolangma

runsalongtheborderbetweenChinaandNepal.Itiscoveredwithsnowalltheyearround.It’s8844.43metershigh,thehighestintheworld.It’s26kilometerslong.theSahara

TheSaharaisthebiggestdesertintheworld.ItislocatedinthenorthernAfrica.Itsclimateconditionsareverybadandisoneoftheearth'smostunsuitableforbiologicalsurvival.

theCaspianSeaTheCaspianSea(里海)isthebiggestinland

lakeintheworld.Themaxdepthis1,025m(inthesouthernpart).ItliesintheborderbetweenAsiaandEurope.theNileTheNile

isthelongestriverintheworld.It’smorethan6,600kilometerslong.Itrunsthrough9countries.It’soneofthelargestriverflowingthroughtheinternationalstatesintheworldandrunsintotheMediterraneanSea(地中海)intheend.

theYangtzeRiver

TheYangtzeRiveristhethirdlongestriverintheworld,andthefirstAsianriver.It’s6211.31kilometerslong.TheYangtzeRiverBasin,east-westwidthof3,219kilometers,about966kilometerswidenorth-south,passingthrough11provinces.ItrunsintotheEastSeainShanghaifinally.Doyouknowhowtoreadthesenumbers?1351,24564,792356,8908,673,023349,603.21自主学习2精讲点拨1hundred百thousand千million百万billion十亿point点8844.43米高2.面积为9,600,000平方公里3.6,671公里长4.1,025米深5.在所有的盐水湖中8844.43metershigh9,600,000squarekilometersinsize6,671kilometerslong1,025metersdeepofallthesaltlakes自主学习21aMatchthefactsyouknow.Qomolangmaabout9,600,000squarekilometersinsizeTheSahara1,025metersdeepTheCaspianSea6,671kilometerslongTheNile8,844.43metershigh8,844.43metershigh.…8,844米高metershigh(long,wide,…)…米高(长，宽…)英语表示“有多长(宽，高……)”时，一般将数词和数量单位放在表示长宽高的形容词_____作状语。Thewallis1.7meterswide.那面墙一米七宽。Explanation前1bListenandcompletethesentences.1.Qomolangmais_________thananyothermountainintheworld.2.TheSaharais__________desertintheworld.3.TheCaspianSeais___________ofallthesaltlakes.4.TheNileis_________riverintheworld.higherthebiggestthedeepestthelongestUsetheinformationin1btomakeconversations.1cA:Whatisthehighestmountainintheworld?B:Qomolangma.Practiceinpairslikethis:A:Whatisthe…inthe…?B:…PracticeWhatisthelongestriverintheworld?TheNile.Whatisthebiggestdesertintheworld?TheSahara.WhatisthelongestriverinAsia?TheYangtzeRiver.2aListenandnumberthefacts[1-4]intheorderyouhearthem._____TheYangtzeRiverisabout_____kilometerslongandtheYellowRiveris________kilometerslong._____Chinahasthebiggestpopulationintheworld.It’salotbiggerthanthepopulationoftheUS.6,3005,0005,46430042_____Chinaisover________yearsold.IthasamuchlongerhistorythantheUS.TheUSisnoteven_________yearsold._____ChinaisalmostasbigastheUS,butitisthebiggestcountryinAsia.13Listenagainandfillintheblanksin2awithnumbersinthebox.2b_____TheYangtzeRiverisabout_____kilometerslongandtheYellowRiveris________kilometerslong._____Chinahasthebiggestpopulationintheworld.It’salotbiggerthanthepopulationoftheUS.6,3005,464_____Chinaisover________yearsold.IthasamuchlongerhistorythantheUS.TheUSisnoteven_________yearsold._____ChinaisalmostasbigastheUS,butitisthebiggestcountryinAsia.5,0003001.Chinahasthebiggestpopulationintheworld.populationn.人口；人口数量Thepopulationofthiscityissixmillion．这个城市的人口是600万。ThepopulationofChinaismuchlargerthanthatoftheUSA.中国的人口比美国的人口多很多。Languagepoints询问人口数量时要用“What’sthepopulationof...?”

提问，而不用howmany或howmuch等提问。表示人口“多”要用_________；表示人口“少”要用_________。large或bigsmall1).ThepopulationofShanghaiis_____thanthatofGuiyang.

A.smallerB.largerC.lessD.large2).---_____isthepopulationofthetown?---Over20,000.Andathirdofthepopulation_____workersofthecarfactory.A.What,areB.Howmany,areC.What,isD.Howmany,isBAOneof+adj最高级+n复数Makeconversationsusingtheinformationin2a.2cA:DidyouknowthatChinaisoneoftheoldestcountriesintheworld?B:Yes,Idid.It’smucholderthanmycountry.A:DidyouknowthatYangtzeRiveristhelongestriverinChina?B:Yes,Idid.It’s6,300meterslong.A:Wow!That’slong!A:DidyouknowthatChinahasthebiggestpopulationintheworld?B:Yes,Idid.It’salotbiggerthanthepopulationoftheUS.A:Wow!That’samazing!2dRole-playtheconversation.

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大关口，北京境内的长城有600余公里，比较著名的有八达岭长城、金山岭长城、司马台长城、慕田峪长城、居庸关长城和箭扣长城等。TheGreatWall

慕田峪长城2dReadtheconversationandanswerthequestions:1.Whichisthebiggestman-madeobjectsintheworld？2.WhichisthemostfamouspartoftheMingGreatWall?TheGreatWall.Badalingpartofthewall.1.Feelfreetoaskmeanythingontoday’sGreatWalltour.feelfree是英语口语中一个常用表达。feelfreetodosth.，让你无需拘束，只管按照自己的意愿去做某事。A:CanIuseyourbathroom?

我可以用一下你的卫生间吗？B:Yes,feelfree.

可以，请随意。Iamnothungry.Feelfreetoeatmyapple.我不饿。你想吃我的苹果就吃吧。Feelfreetocontactmeifyoustillneedanyhelp.

如果还需要帮忙，尽管联系我。asfarasIknow是一个固定的表达方式，还可以说sofarasIknow，意思是“据我所知”。2.AsfarasIknow,therearenoman-madeobjectsasbigasthis.据我所知，再没有像它这样大的人造物体了。AsfarasIknow,Jack’sgottwinsisters.就我所知，杰克有一对孪生姐妹。They’renotcomingtoday,sofarasIknow.他们今天不来了，就我所知是这样的。

AsfarasIknow,hewillbeawayforthreemonths.

据我所知,他将离开三个月。man-madesatellite

人造卫星Nylonisaman-madefibre.

尼龙是一种人造纤维。man-made是合成形容词，类似的与-made合成的形容词还有：_____________(现成的；做好的),_______________(手工的),_____________(自制的),______________(量体定制的)等。man-madeadj.人造的，人工的，合成的ready-madehand-madehomemadetailor-madeMakeadialogue,talkingaboutaplaceofinterest.Oneactsastheguideandtheotherthetourist.Use2dasanexample.PairworkReadthewordsandexpressionsloudly.QomolangmatheNiletheCaspianSeatheSaharatheYa