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1、Unit7What’sthehighestmountainintheworld？SectionADoyouknowtheseinterestplaces?QomolangmaQomolangmarunsalongtheborderbetweenChinaandNepal.Itiscoveredwithsnowalltheyearround.It’s8844.43high,thehighestintheworld.TheSaharaisthebiggestdesertintheworld.Itislocate
2、dinthenorthernAfrica,climateconditionsareverybad,isoneoftheearth'smostnotsuitableforbiologicalsurvival.撒哈拉沙漠约形成于250万年前，是世界仅次于南极洲的第2大荒漠，也是世界最大的沙质荒漠。它位于非洲北部，该地区气候条件非常恶劣，是地球上最不适合生物生存的地方之一。其总面积约容得下整个美国本土TheSaharaTheCaspianSeaTheCaspianSea里海isthebiggestsaltlake
3、intheworld.ItliesintheborderbetweenAsiaandEurope.是世界上最大的湖泊且为咸水湖，位于欧洲和亚洲的交界处TheNileisthelongestriverintheworld.It’smorethan6600kilometerslong.Itrunsthrough9countries,it’soneofthelargestriverflowsthroughtheinternationalstatesintheworldandrunsintotheMediterra
4、neanSea(地中海)intheend.TheNile读下面的数字：hundred234，546，789，202，读下面的数字：thousand1,2344,5463,78926,20217,052489,603读下面的数字：million6,551,2345,234,5469,643,78926,000,002326,414,718millionthousand（百万）（千）大数的表达小数的表达:0.3zeropointthree24.59twenty-fourpointfiveninetall/hig
5、hlong主语+be+数词+量词+widedeepthickinsizeEg:YaoMingis2meterstall.Theholeis10kilometersdeep.Thebookis5centimetersthickTheroomis40squaremetersinsize翻译句子1.这张桌子两米长，一米宽。2.这座山有1500米高。3.这栋楼120米高。4.这本字典有五厘米厚。5.这个湖有多深？1025米深。Thetableistwometerslongandonemeterwide.Themou
6、ntainis1,500metershigh.Thebuildingis120meterstall.Thedictionaryisfivecentimetersthick.Howdeepisthelake?It’s1,o25metersdeep.翻译句子:1.珠穆朗玛峰是8,844.43米高.2.撒哈拉沙摸是9,600,000平方千米。3.里海是1，025米深。4.尼罗河是6，671千米长。Practiceinpairslikethis:A:Howhigh/big/deep/longis+主语B:主语+be
7、+数词+量词+high/deep/…..PracticeWhatisthehighestmountainintheworld?Whatisthebiggestdesertintheworld?Whatisthedeepestsaltlakeintheworld?Whatisthelongestriverintheworld?Talkaboutthesepicturesinpairs.QomolangmaTheSaharaTheCaspianSeaTheNileHomeworkA:Tomakesomedial
8、oguesaboutaskingthesizeofobjects.(8组句子）B:练习册P1451和P1462
