英语人教版八年级下册Unit 7 Section A 1a~2d.ppt

Unit7What sthehighestmountainintheworld SectionA1a 2d Thesecondlongestriverintheworld Doyouknowitsname ItisAmazon Doyouknowhowlongitis It sabout6 500kilometerslong Theworld shighestmountainintheworld Doyouknowhowhighitis Itis8 844metershigh Qomolangma DoyouknowSaharaisthebiggestdesertintheworld Yes itisabout9 600 000squarekilometersinsize Sahara Theworld sdeepestsaltlake TheCaspianSea Doyouknowthathowdeeptheworld sdeepestSaltlake Yes itis1 025metersdeep ThelongestriverinAsia TheYangtzeRiver DoyouknowthattheYangtzeRiveristhelongestriverinAsia Yes itis6 300kilometerslong LanguageGoal Talkaboutgeographyandnature Qomolangmaabout9 600 000squarekilometersinsizeTheSahara1 025metersdeepTheCaspianSea6 671kilometerslongTheNile8 844 43metershigh 1a Matchthefactsyouknow 1 Qomolangmais thananyothermountainintheworld 2 TheSaharais desertintheworld 3 TheCaspianSeais ofallthesaltlakes 4 TheNileis riverintheworld 1b Listenandcompletethesentences higher thebiggest thedeepest thelongest 形容词副词变比较级规则 1 一般在原级后加构成比较级 加构成最高级 smallyoung2 以不发音的字母e结尾的形容词 直接加构成比较级直接加构成最高级 nicelate er est smallersmallest youngeryoungest r st nicernicest laterlatest 3 以辅音字母 y结尾的形容词 变y为i 再加构成比较级再加构成最高级 busy4 在重读闭音节中 末尾只有一个辅音字母的形容词 要先双写这个辅音字母 再加构成比较级再加构成最高级 hot er est busierbusiest er est hotterhottest 5 个别形容词的比较级和最高级是不规则变化 需个别记忆 good well bad badly ill many much littlefar betterbest worseworst moremost lessleast fatherfarthestfurtherfurthest 1c Usetheinformationin1btomakeconversations A Whatisthehighestmountainintheworld B Qomolangma A Whatisthebiggestdesertintheworld B Sahara A Whatisthedeepestsaltlakeintheworld B Caspiansea Pairwork A Whatisthelongestriverintheworld B Nile 2b Listenagainandfillintheblanksin2awiththenumbersinthebox TheYangtzeRiverisabout kilometerslongandtheYellowRiveris kilometerslong Chinahasthebiggestpopulationintheworld It salotbiggerthanthepopulationoftheUS 6 3005 0005 464300 2 4 6 300 5 464 Chinaisover yearsold IthasamuchlongerhistorythantheUS TheUSisnoteven yearsold ChinaisalmostasbigastheUS anditisthebiggestcountryinAsia 1 3 5 000 300 A DidyouknowthatChinaisoneoftheoldestcountriesintheworld B Yes Idid It smucholderthanmycountry 2c Makeconversationsusingtheinformationin2a Groupwork Readtheconversationandanswerthequestions 1 Whichisthebiggestman madeobjectsintheworld 2 WhichisthemostfamouspartoftheMingGreatWall 2d Role playtheconversation Guide Feelfreetoaskmeanythingontoday sGreatWalltour Tourist1 Howlongisthewall Guide Ah themostpopularquestion Ifwe reonlytalkingaboutthepartsfromtheMingDynasty it sabout8 850kilometerslong Thismakesitthelongestwallintheworld Tourist2 Wow that samazing Whydidtheancientemperorsbuildthewall Guide Themainreasonwastoprotecttheirpartofthecountry Asyoucansee it squitetallandwide AsfarasIknow therearenoman madeobjectsasbigasthis Tourist3 IsBadalingpartoftheMingGreatWall Guide Yes it sthemostfamouspart 1 Whichisthebiggestman madeobjectsintheworld TheGreatWall2 WhichisthemostfamouspartoftheMingGreatWall BadalingpartoftheMingGreatWall 1 Feelfreetoaskmeanythingontoday sGreatWalltour 在今天的长城游中 大家尽管问我任何问题 不要拘束 feelfree是英语口语中一个常用表达 若有人让你feelfreetodosomething 就是让你无需拘束 只管按照自己的意愿去做某事 e g A CanIuseyourbathroom 我可以用一下你的卫生间吗 B Yes feelfree 可以 请随意 Languagepoints 2 AsfarasIknow therearenoman madeobjectsasbigasthis 据我所知 再没有像它这样大的人造物体了 asfarasIknow是一个固定的表达方式 还可以说sofarasIknow 意思是 据我所知 例如 AsfarasIknow Jack sgottwinsisters 就我所知 杰克有一对孪生姐妹 They renotcomingtoday sofarasIknow 他们今天不来了 就我所知是这样的 3 theMingGreatWall明长城 明长城 是指明朝时期为了防御北方游牧民族的骚扰 历时一百多年在北部地区修筑的军事防御工程 这段长城东起辽宁虎山 西至甘肃嘉峪关 从东向西横贯多个省 直辖市 自治区 全长约8850千米 是现存历代长城遗迹中最完整 最坚固的 一写出下列单词的比较级和最高级 fortable3 big4 happy5 cheap6 many7 difficult8 little fortable3 big4 happy5 cheap6 many7 difficult8 little betterbest more most biggerbiggest happierhappiest cheapercheapest moremost more most lessleast 1 Lilygetsup early thanLucy 2 Whichgoes slowly TomorJim 3 Thisbookis interesting thanthatone earlier moreslowly moreinteresting 二根据所给词的适当形式填空 4 Sheworks careful inherschool 5 Whogoesto