Unit7SectionA(1a-1c)课件人教版英语八年级下册

SectionA(1a-1c)Unit7What'sthehighestmountainintheworld?LearningGoalsBytheendoftheclass,studentswillbeableto1.learnaboutsomegeograpicalfacts.2.describethefeaturesofsomefamousplacesbyusingnumbers3.usethecomparativeandthesuperlativetocomparethings._____________isthehighestmountainintheworld.Qomolangma['tʃəʊməʊˌlɑ:ŋmə]theNiletheCaspianSeatheSahara[sə'hɑ:rə]['kæspiən][naɪl]Thelongestriverintheworldis_________.Thedeepestsaltlakeintheworldis_____________.Thebiggestdesertintheworldis__________.

n.沙漠HowhighisQomolangma?HowlongistheNile?HowdeepistheCaspianSea?HowbigistheSahara?Doyouknow?Pre-listeningMatchthefactsyouknow.1aQomolangmaAbout9,600,000squarekilometersinsizeTheSahara1,025metersdeepTheCaspianSea6,671kilometerslongTheNile8,848.86metershighHowtoreadtheselargenumbers?9,600,0001,0256,6718,848.86ninemillionsixhundredthousandonethousandandtwenty-fivesixthousandsixhundredandseventy-oneeightthousandeighthundredandforty-eightpointeightsix读数有个小窍门，自右向左三逗分，一逗千是（thousand），二逗百万是（million），三逗十亿是（billion），左右三位分开读，百位十位and连。Speakoutthefacts.TheSaharaisabout9,600,000squarekilometersinsize.TheCaspianSeais1,025metersdeep.TheNileis6,671kilometerslong.Qomolangmais8,848.86metershigh.地名+is+基数词+数量单位+adj(deep/long/high/wide)/insize.Readthesentencesandpredict.1bQomolangmais_____________thananyothermountainintheworld.TheSaharais_____________desertintheworld.TheCaspianSeais_______________ofallthesaltlakes.TheNileis_________________riverintheworld.Predicting(than形容词比较级标志词。)（句比较范围很大，考虑最高级，be动词后应该用形容词，故如果填最高级，形容词最高级前面的the不能省略。）)Listenandcompletethesentences.1bQomolangmais_____________thananyothermountainintheworld.TheSaharais_____________desertintheworld.TheCaspianSeais_______________ofallthesaltlakes.TheNileis_________________riverintheworld.higherthe

biggestthedeepestthelongestWhile-listening=Qomolangmaisthehighestmountainintheworld.Listenandread.Teacher:Yesterday,welearnedsomeimportantgeographicalfacts.Ihopeyouallstillrememberthem.I'mgoingtotestyounowbyaskingafewquestions.First,what'sthehighestmountainintheworld?Boy1:Qomolangma!It'shigherthananyothermountainintheworld.Teacher:That'sright.AndwhocantellmewhattheSaharais?Girl1:TheSaharaisthebiggestdesertintheworld.Teacher:Verygood.Andwhichisthedeepestsaltlakeintheworld?地理事实Girl2:TheCaspianSeaisthedeepestofallthesaltlakes.Teacher:You'reallsosmart!Now,forthelastquestion,whichisthelongestriverintheworld?Boy2:Iknow!TheNileisthelongestriverintheworld.Boy1:AndtheAmazonisthesecondlongestriverintheworld.Teacher:Itseemsthatyouknowtheanswerstoallmyquestions.Goodjob!the+序数词+形容词最高级第几……的Let'swatchavideo!Post-listeningUsetheinformationin1btomakeconversations.1cQomolangma.Whatisthehighestmountainintheworld?Howhighisit?Itis8,848.86metershigh.Languagepoints1.长、宽、高、深、面积的表达方法Theriveris10meterswide.=Theriveris10metersinwidth.基数词+单位词+形容词（long,wide,high,deep等）基数词+单位词+in+名词（length,width,height,depth,size等）拓展：长宽高深等还可以用复合形容词，即数词-量词（单数形式）-long/wide/---做前置定语。a20-meter-deepriver2.Qomolangmaishigherthananyothermountainintheworld.该结构意为“比其他任何一个……都……”，指同一范围内比较，表示最高级含义。Tomistallerthananyotherstudentinhisclass.=Tomisthetallestinhisclass.other必不可少，用以将主语从比较对象中排除，避免逻辑矛盾。比较级+thananyother+可数名词单数ExercisesI.汉译英。1.这张桌子两米长，一米宽。2.这座山有5000米高。Thetableistwometerslongandonemeterwide.Themountainis5,000metershigh.3.这个湖有多深？1025米深。Howdeepisthelake?It’s1,025metersdeep.

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HowhighisQomolangma?B:It’s8,848.86metershigh.A:HowdeepistheCaspianSea?B:It’s1,025metersdeep.A:Howlongis