英语人教版八年级下册unit7 sectionA.ppt

Period11a 2c Unit7What sthehighestmountainintheworld 兰溪学校 龚敏 Whatisthehighestmountainintheworld Whatisthelongestriverintheworld Whatisthebiggestdesertintheworld Doyouknowtheserecords Qomolangma 珠穆朗玛 isthehighestmountainintheworld It s8844 43metershigh ItrunsalongtheborderbetweenChinaandNepal Itiscoveredwithsnowalltheyearround TheNile 尼罗河 isthelongestriverintheworld It s6671kilometerslong Itrunsthrough9countries it soneofthelargestriverflowsthroughtheinternationalstatesintheworldandrunsintotheMediterraneanSea 地中海 intheend TheCaspianSea 里海 isthebiggestlakeintheworld It s1025metersdeep ItliesintheborderbetweenAsiaandEurope TheSahara 撒哈拉沙漠 isthebiggestdesertintheworld It sabout9600000squarekilometersinsize ItislocatedinthenorthernAfrica climateconditionsareverybad isoneoftheearth smostnotsuitableforbiologicalsurvival TheYangtzeRiveristhethirdlongestriverintheworld thelongestAsianrivers It s6211 31kilometerslong TheYangtzeRiverpassesthrough11provinces ItrunsintotheEastSeainShanghaifinally 大多数形容词有三个级 1 原级 Structure as as 像 一样e g TimisastallasTom 2 比较级 用于两者之间的比较 Structure 形容词比较级 than e g Thisboxisbiggerthanthatone 形容词和副词的比较级和最高级 3 最高级 用于三者或三者以上的比较 Structure the 形容词的最高级 of in e g Tomistheheaviestinourclass Heisthemostpopularinourschool 规则变化1 一般情况下 单音节或双音节的形容词 副词比较级 er 最高级 est 如 clever cleverer cleverestfew fewer fewestsmall smaller smallest等 形容词 副词的比较级和最高级规则变化和不规则变化 2 以e结尾的词 比较级 r 最高级 st即可 如 nice nicer nicestcute cuter cutestlarge larger largest3 以辅音字母 y结尾的变y为i er或est如 easy easier easiesthappy happier happiest再如 early busy heavy dirty lazy也如此 4 重读闭音节 单辅音结尾的 双写这个辅音字母 er或est的词 fat fatter fattest thin thinner thinnest hot hotter hottest red redder reddest wet wetter wettest big bigger biggest 5 多音节和部分双音节的词需要在形容词原级前 more构成比较级 themost构成最高级 如 beautiful morebeautiful themostbeautiful又如 delicious popular important interesting expensive creative双音节的词如 careful morecareful themostcarefuluseful moreuseful themostuseful 少数单音节词也是这样 如 pleased morepleased themostpleasedtired moretired themosttiredb 不规则变化 good better bestwell better bestbad worse worstmany much more most far farther farthest 距离远 far further furthest 程度深 old elder eldest 长幼 old older oldest 年龄 三者或三者以上相比 表示最高程度时 用 the 最高级 的结构表示 这种句式一般常有表示比较范围的介词短语 例如 ZhangHuaisthetallestofthethree Heworksthehardestinhisclass 最高级的用法 Matchthefactsyouknow Listenandcompletethesentences Qomolangmais thananyothermountainintheworld 2 TheSaharais desertintheworld 3 TheCaspianSeais ofallthesaltlakes 4 TheNileis riverintheworld higher thebiggest thedeepest thelongest Whatisthelongestriverintheworld TheNile Usetheinformationin1btomakeconversations HowlongistheNile It s6671kilometerslong Whatisthebiggestdesertintheworld TheSahara HowbigistheSahara It sabout9600000squarekilometersinsize A What sthehighestmountainintheworld B Qomolangma A HowhighisQomolangma B It s8 844metershigh Practice A What sthebiggestlakeintheworld B TheCaspianSea A HowdeepistheCaspianSea B It s1025metersdeep Practice Listenandnumberthefacts 1 4 intheorderyouhearthem 6 3005 0005 464300 TheYangtzeRiverisabout kilometerslongandtheYellowRiveris kilometerslong Chinahasthebiggestpopulationintheworld It salotbiggerthanthepopulationoftheUS Chinaisover yearsold IthasamuchlongerhistorythantheUS TheUSisnoteven yearsold ChinaisalmostasbigastheUS butitisthebiggestcountryinAsia 4 2 1 3 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 Choosethebestanswer 1 Mybrotheris moreoutgoingthanme A manyB littleC much2 October12thwasoneof daysin2005 Shenzhou VIwaslaunched 发射 successfully A excitingB moreexcitingC themostexciting3 Whichcityis Beijing ShanghaiorFuzhou A beautifulB morebeautifulC themostbeautiful 4 childrenthereareinafamily their