英语人教版八年级下册Unit 7 Section A(1a-2d).ppt

,八年级（下）,Go,for,it!,学练优英语教学课件,学练优八年级英语下（RJ）教学课件,SectionA(1a-2d),Unit7Whatsthehighestmountainintheworld?,Readandlearn,Wordsandexpressions,Whichisthehighestmountainintheworld?Whichisthelongestriverintheworld?WhichisthelongestriverinAsia?,Leadin,Doyouknow?,Qomolangma,theSahara,theCaspianSea,theNile,theYangtzeRiver,1a,Matchthefactsyouknow.,1b,Listenandcompletethesentences.,1.Qomolangmais_thananyothermountainintheworld.2.TheSaharais_desertintheworld.3.TheCaspianSeais_ofallthesaltlakes.4.TheNileis_riverintheworld.,higher,thebiggest,thedeepest,thelongest,Usetheinformationin1btomakeconversations,1c,A:Whatisthehighestmountainintheworld?B:Qomolangma.,Whatisthelongestriverintheworld?,TheNile.,Whatisthedeepestdesertintheworld?,TheSahara.,2a,Listenandnumberthefacts1-4intheorderyouhearthem.,_TheYangtzeRiverisabout_kilometerslongandtheYellowRiveris_kilometerslong._Chinahasthebiggestpopulationintheworld.ItsalotbiggerthanthepopulationoftheUS.,6,3005,0005,464300,4,2,_Chinaisover_yearsold.IthasamuchlongerhistorythantheUS.TheUSisnoteven_yearsold._ChinaisalmostasbigastheUS,butitisthebiggestcountryinAsia.,1,3,Listenagainandfillintheblanksin2awithnumbersinthebox.,2b,_TheYangtzeRiverisabout_kilometerslongandtheYellowRiveris_kilometerslong._Chinahasthebiggestpopulationintheworld.ItsalotbiggerthanthepopulationoftheUS.,6,300,5,464,_Chinaisover_yearsold.IthasamuchlongerhistorythantheUS.TheUSisnoteven_yearsold._ChinaisalmostasbigastheUS,butitisthebiggestcountryinAsia.,5,000,300,Makeconversationsusingtheinformationin2a.,2c,A:DidyouknowthatChinaisoneoftheoldestcountriesintheworld?B:Yes,Idid.Itsmucholderthanmycountry.,Pleasereadtheconversationin2d.,Whatstheconversationabout?,ItsaboutatourtotheMingGreatWall.,Readagainandanswerthequestionsin2d.,1.HowlongistheMingGreatWall?2.Whatdoestheguidesayaboutthewall?,Itsabout8,850kilometerslong.,Itsquitetallandwide./Itsthelongestwallintheworld.,Languagepoints,表示人口“多”要用large或big；表示人口“少”要用small。Chinahasthelargestpopulationintheworld.,Population：意为“人口数量”，“人口”，是一个集合名词.,population常与定冠词the连用,作主语用时,谓语动词常用第三人称单数形式。Theworldspopulation_increasing_.全世界的人口增长得越来越快。ThepopulationofChinaisabout1,300,000,000.中国人口大约有13亿。,fasterandfaster,is,当主语是表示“人口的百分之几、几分之几”时,谓语动词用复数形式.eg:中国大约有百分之七十的人口是农民。AboutseventypercentofthepopulationinChinaarefarmers,询问某国、某地有多少人口时,“Howlarge.?”;在问具体人口时用“What.?”。你们家乡有多少人口?加拿大的人口有多少?,Howlargeisthepopulationofyourhometown?,WhatisthepopulationofCanada?,Practice,这个城市的人口是600万。Thepopulationofthiscityissixmillion中国的人口比美国的人口多很多。ThepopulationofChinaismuchlargerthanthatoftheUSA.,2.DidyouknowthatChinaisoneoftheoldestcountriesintheworld?thatChinais是know的宾语从句。尽管主句的动词是过去时态，但由于宾语从句陈述的是客观事实，所以从句仍用一般现在时。,3.Itsmucholderthanmycountry.,muchhigher意为“高得多”。在形容比较级前还可以用much,even,alittle,still,alot,less等修饰词表示程度。,Practice,他比我跑得更快。HerunsevenfasterthanI.日本土地面积只比德国大一点儿。JapanisalittlelargerthanGermanyinarea.,1.Thep_inourhometownisverylarge.2.Wet_bycareverysummer.3.Wehavetomakeplanstop_theendangeredanimals.4.Theycametoa_(宽阔的)river.5.Some_(古老的)townshavewallsaroundthem.,opul