八年级英语上册Unit 3 Countries and Cities学案北师大版VIP免费

Unit3CountriesandCities【本讲教育信息】一.教学内容：第三单元第一部分能简单描述不同国家的人口、地理、语言等情况，并进行比较二.本周教学重点、难点：1.描述国家的人口、地理、语言等。2.“How+adjective”疑问句，及其回答。3.形容词的比较级。三.具体内容：（一）Askingaboutcountries,cities,andlanguages.1.—WhatisthecapitalofFrance?—It’sParis.2.—WhatlanguagedotheyspeakinAmerica?—TheyspeakEnglish.3.—WhereistheEiffelTower?—It’sinFrance.[4.—Whatisthecountryfamousfor?—It’sfamousforthesilk.e.g.Mycountryisverylarge.Ithasmanybeautifullakes,riversandmountains.Mostpeopleliveinthesouthernpartofthecountrybecauseitisverycoldinthenorth.ThecapitalofmycountryisOttawa.MycountryiscalledCanada.（二）Questionswith“How+adjective”1.—HowlongistheNileRiver?—TheNileRiverisabout6,671kmlong.2.—HowhighistheGreatPyramid?—TheGreatPyramidis137metershigh.3.—HowfarisBeijingfromShanghai?—It’sabout1000km.4.—HowdeepistheGrandCanyon?—It’sabout…deep.（三）Comparativeadjectives形容词的原来形式在相比较概念中称做原级，与之比较，“更……的”称作比较级，“最……的”称作最高级。[]形容词变成比较级和最高级的构成规则1.一般单音节形容词和少数双音节词变成比较级，最高级，分别在词尾加er,est.情况变法例词一般情况加er,esttall—taller—tallest以e结尾时加r,stlarge—larger—largest以“辅音+y”结尾时变y为i，加er,esthappy—happier—happiest以重读闭音节结尾，末尾只有一个辅音字母时双写最后的辅音字母，再加er,estbig—bigger—biggestthin—thinner—thinnest对少数的双音节形容词，变比较级和最高级时也是如此。e.g.narrow—narrower—narrowestsimple—simpler—simplestclever—cleverer—cleverest2.一般双音节及多音节的形容词变比较级和最高级时，都要在前面加more,most.e.g.useful—moreuseful—mostusefuldifficult—moredifficult—mostdifficult[来3.不规则形式。原级比较级最高级many/muchmoremostgood/wellbetterbestbadworseworstlittlelessleastfarfarther/furtherfarthest/furthest4.有一些形容词没有比较级。e.g.ChineseEnglish,afraidawarealive,eastwest,rightleft,woodengolden,squareround…5.形容词比较级的用法。（1）所在的句子结构通常是：“含有形容词比较级的主句+引导的从句”，如从句省略，要保留同主句相比的部分及其修饰语。e.g.Mycompositionisshorterthanhers.IhavemoreEnglishbooksthanFrenchbooks.ThepenI’musingnowisbetterthantheoneIusedlastyear.[（2）相比中，出现的程度和数量之差，须置于形容词比较级的前面。e.g.Iam2yearsolderthanmyyoungerbrother.Yourshoesare2sizesbiggerthanhers.Thisbookismoreexpensivethanthatone.6.形容词最高级的用法。用于两者以上的比较。通常前面加定冠词，并有一个表示范围的短语或从句。e.g.ItisthemostinterestingbookIhaveeverread.Johnisthetallestboyintheclass.Sheisthebeststudentintheschool.7.其他用法。（1）形容词的同级比较。表示两者一样时，用as…as，不及……时，用notso…as,notas…ase.g.Heisastallashiseldersister.Ireadlesson2asmanytimesaslesson1.InwinteritisnotsocoldinNanjingasinBeijing.（2）形容词比较级的单独用法。Areyoufeelingbetternow?Bemorecareful.Eatlessmeatandmorevegetable.Hehaslessmoney.（3）moreandmore越来越AfterMarch,theweatherisgettingwarmerandwarmer.Nowourcountryisgettingstrongerandstronger.Thegardenisbecomingmoreandmorebeautiful.[（4）themore…themore越是……就越Themoreangryshebecame,themoretheylaughedather.Theharderyouwork,thebetteryouwilldo.四.课堂练习。（一）单选。1.CanadaisverylargebutRussiaisthanCanada.A.largeB.largerC.largestD.thelargest2.TheAralSeacontinuedtoget.A.smallB.smallerC.smallestD.thesmallest3.TheAmazonRivergoesthecou...