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1、Unit7Unit7What'sthehighestmountainintheworld?30,000thirtythousand1,025onethousandandtwentyfive6,671sixthousandsixhundredandseventy-one842.35eighthundredandforty-twopointthreefive9,600,000nightmillionsixhundredthousnd1,000onethousandⅠ.Lead-in1,0259,600,0001,000,000,000thousandmillionthousa
2、ndbillionmillionthousand1.从个位起逆向每三位数加一个逗号（,）2.右起第一个逗号读thousand(千)3.右起第二个逗号读million(百万)4.右起第三个逗号读billion（十亿）数字的表达方式数字的表达方式30,000842.35thirtythousandeighthundredandforty-twopointthreefive1.英语中无“万,亿”这两个单位，要表示则需要借用thousand,million.2.在hundred后通常加上连词and.3.小数点一般读作point，后面的数字直接读出30,0001,0256,6718
3、42.359,600,0001,000Whatdothenumbersremindyouof?9,600,0008,844,431,0256,671Ⅱ.PresentationDoyouknowtheseinterestplaces?Qomolangma珠穆朗玛峰TheNile尼罗河TheCaspianSea里海TheSahara撒哈拉沙漠1aMatchthefactsyouknow.1bListenandcompletethesentences.1.Qomolangmais______thananyothermountainintheworld.2.TheSaharai
4、s____________desertintheworld.3.TheCaspianSeais____________ofallthesaltlakes.4.TheNileis_________riverintheworld.higherthebiggestthedeepestthelongest2a.__TheYangtzeRiverisabout____kilometerslongandtheYellowRiveris___kilometerslong.__Chinahasthebiggestpopulationintheworld.It’salotbiggertha
5、nthepopulationoftheUS.__Chinaisover___yearsold.IthasamuchlongerhistorythantheUS.TheUSisnoteven___yearsold.__ChinaisalmostasbigastheUS,butitisthebiggestcountryinAsia.42136,3005,0005,4643006,3005,4645,000300FactsaboutChinaoneoftheoldestcountriesthebiggestpopulationthebiggestcountryinAsiathe
6、longestriverinAsia2cMakeconversationsusingtheinformationin2a.A:DidyouknowthatChinaisoneoftheoldestcountriesintheworld?B:Yes,Idid.it’smucholderthanmycountry.PracticeA:DidyouknowthatYangtzeRiveristhelongestriverinChina?B:Yes,Idid.It’s6,300meterslong.B:Wow!That’slong!HomeworkListenandreadSec
7、tionA1b,2a.Writeashortarticleaboutchinausingtheinformationin2a.
