英语人教版八年级下册unit7 sectionA .ppt

Unit7Whatsthehighestmountainintheworld?SectionA1a2cByHuTing,Learningaims:,知识目标：1.熟练掌握词汇：meter,deep,desert,population,Asia2.熟练掌握形容词的比较级和最高级的结构及比较句式；3.熟练掌握较大数字的读法以及计量表达法技能目标：1.学会用形容词的比较级和最高级谈论地理及自然方面的知识；2学会用合适的词汇和句型对事实和数字进行比较；3.能根据已有知识猜测听力材料情感目标：通过谈论地理和自然方面的知识，开阔学生的视野，并形成保护自然和环境的意识,Goodjob!,Part1,WordsRevision,mountain,river,saltlake,dessert,thehighest,thelongest,thedeepest,thebiggest,presentation,Qomolangmaabout9,600,000squarekilometersinsizeTheSahara1,025metersdeepTheCaspianSea6,671kilometerslongTheNile8,844.43metershigh,1aMatchthefactsyouknow.,Questiontime:,36，500,435,478,billion十亿）,million百万,thousand千,Canyoureadthesenumbers?8,844.436,6711,0259,600,000,千位及千位以上数字的表达：以三位数为一个单位，每三位数用“，”隔开,Howtoreadlargenumbers,1,025,6,671,8,844.43,9,600,000,onethousandandtwenty-five,sixthousand,sixhundredandseventy-one,eightthousand,eighthundredandforty-fourpointfourthree,ninemillion,sixhundredthousand,AcompetitionWhocanreadthemostquickly,2,588twothousand,fivehundredandeighty-eight14,306fourteenthousand,threehundredandsix650,372sixhundredandfiftythousand,threehundredandseventy-two,A:Wheworld?B:.heworld.A:How.isit?B:Its.,1b,Listenandcompletethesentences.,1.Qomolangmais_thananyothermountainintheworld.2.TheSaharais_desertintheworld.3.TheCaspianSeais_ofallthesaltlakes.4.TheNileis_riverintheworld.,higher,thebiggest,thedeepest,thelongest,Listeningskills:beforelistening,readandtrytopredict(预测）.,2aListenandnumberthefacts(1-4)intheorderyouhearthem.,_TheYangtzeRiverisabout_kilometerslongandtheYellowRiveris_kilometerslong._Chinahasthebiggestpopulationintheworld.ItsalotbiggerthanthepopulationoftheUS._Chinaisover_yearsold.IthasamuchlongerhistorythantheUS.TheUSisnoteven_yearsold._ChinaisalmostasbigastheUS,anditisthebiggestcountryinAsia.,4,2,1,3,2bListenagainandfillintheblankswiththenumbersinthebox.,6,3005,0005,464300,_TheYangtzeRiverisabout_kilometerslongandtheYellowRiveris_kilometerslong._Chinahasthebiggestpopulationintheworld.ItsalotbiggerthanthepopulationoftheUS._Chinaisover_yearsold.IthasamuchlongerhistorythantheUS.TheUSisnoteven_yearsold._ChinaisalmostasbigastheUS,anditisthebiggestcountryinAsia.,4,2,1,3,6,300,5,464,5,000,300,注：Chinahasthebiggestpopulationintheworld.中国是世界上人口最多的国家。,population意为“人口”时，是一个集合名词。它在句中作主语时，谓语动词通常用单数形式。其常用句型为“Thepopulationof+某地+is+数词”或“某地+hasapopulationof+数词”，表示“某地有多少人口”。如：,Thepopulationofmycityisthreemillion.当表示人口“多”或“少”时，常用形容词large，big或small修饰population。如：Thetownhasalarge/big/smallpopulation.当对人口数量进行提问时，要用疑问词what或howlarge。如：What/Howlargeisthepopulationofyourcountry?,形容词的比较级和最高级变化规则,1一般单音节词和少数双音节词，比较级在后面加-er，最高级在后面加-est；smallsmallersmallest2以不发音e结尾的单音节词，比较在原级后加-r，最高级在原级后加-stfinefinerfinest3在重读闭音节（即：辅音元音辅音）中，先双写末尾的辅音字母，比较级加-er，最高级加-est,形容词的比较级和最高级变化规则,hothotterhottest4以“辅音字母y”结尾的双音节词，把y改为i，比较级加-er，最高级加-est；如:heavyheavierheaviest5其他双音节词和多音节词，比较级在前面加more，最高级在前面加most；如：beautifulmorebeautifulmostbeautiful,fortable3.big4.happy5.cheap6.many7.difficult8.little,betterbestmorecomfortablemostcomfortablebiggerbiggesthappierhappiestcheapercheapestmoremostmoredifficultmostdifficultlessleast,比较级和最高级填空：,Whocanspeakthemostquickly？,cheaper,cheapest,bigger,biggest,closer,closest,friendlier,friendliest,morepopular,themostpopular,morecomfortable,themorecomfortable,better,best,worse,worst,more,most,farther,farthest,Groupwork:Talkabouttheiragesandheights(身高）withcomparative(比较级）andsuperlative(最高级）,TiantianKimiShitouCindyAngela11/12,20079/15,20092/26,20074/15200810/132009,1.Lilygetsup_(early)thanLucy.2.Whogoes_(slow),TomorJim?3.Thisbookis_(interesting)thanthatone.,earlier,moreslowly,moreinteresting,Exercise根据所给词的适当形式填空,4.Sheworks_(careful)inherschool.5.Whogoestobed_(late)Jim,TomorJack?6.Ithinkturkeyis_(delicious)ofall.,themostcarefully,latest,themostdelicious,观察与思考,14yearsold8,844metershigh9,600,000squarekilometersinsize1,025metersdeep6,300kilometerslong,英语中的计量表达法,数词numeral名词n.形容词adj.这种结构常用来表示“长度、宽度、高度、年龄或时间”等。例如：Maryistenyearsold玛丽十岁了。Theclassroomisabout20metreslong这间教室约二十米长。,Fillintheblanks.1.这张桌子两米长，一米宽。and_2.这座山有1500米高。3.这个年轻人1.7米高。4.这条鱼五公斤重。5.这个湖有多深？125米深。,Thetableis_,Themountainis_,Theyoungmanis_,Thefishis_kilos_,_isthelake?Its_,twometerslong,onemeterwide.,1,500metershigh.,1.7meterstall.,fiveheavy.,Howdeep,125metersdeep.,Groupwork:Asurvey,小组内讨论谁最高、最矮、最细心、最懒、最活跃并找一人汇报。,Report:Inourgroup,istheButisthe,geographynature,listeningskills,计量表达法,比较级、最高级用法,keywords,Summary,Thebeautifulearthisourhomeland,weshouldprotect(保护)it.,Weshouldtryourbesttoprotectthe