Unit7 What’s the highest mountain in the world第3课时SectionAGrammarFocus_4c课件（人教新目标版）

SectionAGrammarFocus-4cUnit7What’sthehighestmountainintheworld?初中英语八年级下册RJ 1.Newword:ocean2.Expression:thePacificOcean3.Grammar:①较大数字的表达方法；②形容词和副词的比较级和最高级Learninggoals SomeinterestingfactsaboutQomolangma1.Qomolangmais8,848.86metershighandisstillgrowing.2.Ittakesatleast30,000USDtoclimbQomolangma.3.Morethan7,000climbersreachthesummitofQomolangma.4.About300peoplehavediedonthemountain.Warmingup 5.ThesummitofQomolangmaisontheborderofNepalandTibet(China).NepalliestothesouthandChinatothenorth. 8,848.8630,0007,000eightthousandeighthundredandforty-eightpointeightsixthirtythousandCanyoureadtheselargenumbers?seventhousand61,021sixty-onethousandandtwenty-onePresentation 大数字的表达和读法大于1000的基数词的表达法：①从数字的右端向左数，每三位数加一个逗点；②第一个逗点前的数为thousand（千），第二个逗点前的数为million（百万），第三个逗点前的数为billion（十亿）。③读的时候通常在hundred后加and，如果百位数为0，则在thousand后加and。 26742,674thousandandtwothousandsixhundredandseventy-fourhundred1.从数字右端向左数，每三位数加一个逗点；2.第一个逗点前的数为thousand（千）；3.读的时候通常在hundred后加and。 1835708918,357,089millionandeighteenmillion,threehundredandfifty-seventhousand,andeighty-ninethousand1.从数字右端向左数，每三位数加一个逗点；2.第一个逗点前的数为thousand（千）；第二个逗点前的数为million（百万）；3.读的时候通常在hundred后加and，如果百位数为0，则在thousand后加and。 ReversalGame1,430,6722,760,431onemillion,fourhundredandthirtythousand,sixhundredandseventy-twotwomillion,sevenhundredandsixtythousand,fourhundredandthirty-one 28Theis.63e.g.Thebasketballplayeris2meterstall.Theriverisabout2meterswide/deep.Themountainisabout2thousandmetershigh.Theriverisabout2kilometerslong.Brainstorm长、宽、高、深的表达法：基数词+单位词+形容词（long、wide、high、deep等）。当基数词大于1时，单位词用复数形式。 What’sthehighestmountainintheworld?Qomolangma.HowhighisQomolangma?It’s8,844.43metershigh.It’shigherthananyothermountain.Whichisthedeepestsaltlakeintheworld?TheCaspianSeaisthedeepestofallthesaltlakes.DidyouknowthatChinaisoneoftheoldestcountriesintheworld?Yes,Idid.It’smucholderthantheUS.Findthecomparativesandsuperlatives.此句型用比较级表达最高级含义GrammarFocus 形容词和副词通常有三种级别：1.原级(Positiveform):没有比较含义，“……”；2.比较级(Comparativeform):两者间比较“更……”；3.最高级(Superlativeform)：三者及三者以上比较，“最……”。注意：某些形容词和副词只用原级，如：perfect、excellent、dead等。Presentation 语法概述形容词和副词的比较级用于两者之间的比较,表示“较……”或“更……一些”；形容词和副词的最高级用于三者或三者以上的人或物之间的比较，表示“最……”形容词最高级前一般要加定冠词the，副词最高级前的the可以省略。形容词和副词的比较级和最高级 （一）比较级和最高级的构成1.规则变化单音节和部分双音节词多音节词和部分双音节词一般在词尾直接加-er或-est以e结尾的，词尾加-r或-st以“辅音字母+y”结尾的，改y为i加-er或-est重读闭音节以一个辅音字母结尾的，双写这个辅音字母再加-er或-est在原级前加more构成比较级，加most构成最高级long→longer→longestnice→nicer→nicestheavy→heavier→heaviestbig→bigger→biggestbeautiful→morebeautiful→mostbeautiful 2.不规则变化原级比较级最高级good/wellbetterbestmany/muchmoremostbad/badlyworseworstlittlelessleastfarfarther/furtherfarthest/furthest 1.比较级+than2.比较级+and+比较级3.the+比较级，the+比较级4.A+倍数+比较级+than+B5.the+比较级+ofthetwo...6.Which/Who...+比较级，AorB?（二）比较级的用法 【特别提醒】(1)比较的对象必须一致。Yourskirtlooksmorebeautifulthanmine.你的裙子比我的好看。(2)有时为了避免重复，可用that或those代替前面提到的词，而且that或those不能省略。ThepopulationofSuihuaismuchsmallerthanthatofHarbin.绥化的人口比哈尔滨的(人口)少得多。 Thedishesinthisrestaurantaremoredeliciousthanthoseinthatrestaurant.这家饭店的菜比那家的好吃。(3)“a/an+比较级”表示“又一/再一更……的”。Lilyhasadoll,butshewantsabiggerone.莉莉有一个玩具娃娃，但是她想要一个更大的。 1.(the+)最高级+in/of短语该结构意为“……中最……的”。Ithinkspringisthebesttimeofayear.我认为春天是一年中最好的时节。Tomworks(the)hardestinClass3.在三班汤姆学习最努力。（三）最高级的用法 2.oneofthe+最高级+可数名词复数+in/of短语该结构意为“……中最……的……之一”。Hangzhouisoneofthemostbeautifulcitiesintheworld.杭州是世界上最美的城市之一。 of与in都有“在……当中”的意思。但它们有严格的区别。用of的时候,主语同of后面的词是指同一类的人或物。而用in的时候,主语同in后面的词是指不同类的人或物。 3.the+序数词+最高级+可数名词单数+in/of短语该结构意为“……在……中是第几……的……”（从第二开始）。Asweallknow,theYellowRiveristhesecondlongestriverinChina.众所周知，黄河是中国第二长河。 4.Which/Who...+最高级,A,BorC?该结构意为“A、B、C中，哪个/谁最……？”。Whichisthebiggest,Beijing,ShanghaiorGuangzhou?哪个（城市）最大，北京、上海还是广州？ 【特别提醒】(1)最高级前有物主代词、名词所有格等修饰时，其前不加the。TheYangtzeRiverisChina’slongestriver.长江是中国最长的河流。(2)当most表示“非常”时，其前不加the。Itisamostusefulbook.它是一本非常有用的书。 1.TheAmazonRiverisoneofthe_________riversintheworld.It’salittle________thantheYangtzeRiver.2.Qomolangmais8,844.43meters_______.It’soneofthemost__________placesforseriousmountainclimbers.4aFillintheblankswiththecorrectformsofthewordsinthebox.bigmuchpopularlongoldhighlongestlongerhighpopular 3.Nooceanintheworldisas________asthePacificOcean.4.AlthoughJapanis_______thanCanada,itis________smaller.4aFillintheblankswiththecorrectformsofthewordsinthebox.bigmuchpopularlongoldhighbigoldermuch太平洋n.大海，海洋 Makecomparisonsaccordingtothetable.theNileRivertheAmazonRivertheYangtzeRivertheYellowRiver6,671km6,480km6,300km5,464kmTheNileRiveristhelongestriverintheworld.NoriverintheworldisaslongastheNileRiver.TheAmazonRiverisoneofthelongestriversintheworld. TheAmazonRiverisalittlelongerthantheYangtzeRiver.TheNileRiverismuchlongerthantheYellowRiver. 4bWritetwocomparisonsabouttwotopics.Writetruefacts.e.g.Tworivers:theYangtzeRiverandtheAmazonRiverTheYangtzeRiverisalmostaslongastheAmazonRiver.TheAmazonislongerthantheYangtze,buttheYangtzeisthelongestriverinChina. Twocities:________________and________________________________________________________________________________________________________________________________________________Twoanimals:________________and___________________________________________________________________________________________________________________________________________________SingaporeKualaLumpurSingaporeisasmodernasKualaLumpur.SingaporeisbiggerthanKualaLumpurandhasalargerpopulationthanKualaLumpur.RabbitSnailArabbitisbiggerthanasnail.Asnailissmallerthanarabbit,anditrunsslowerthanarabbit. 4cWritefivequestionsusingcomparisons.Thenaskyourpartneryourquestions.1.__________________________________________2.__________________________________________3.__________________________________________4.__________________________________________5.__________________________________________Whatisthehighestbuildinginourcity?Whatisthebusiestsubwaystationinourcity?Whatisthelargestshoppingmallinourcity?Whichisthebiggestparkinourcity?Whichisthelongestroadinourcity? Whichplaceisthebestforourschooltrip?Ourschoolisgoingonaschooltripinthecity.Whichisthebestplacetogoto?Canyougivesomeadviceandwhy?Workingroupsof5andreporttotheclass.Remembertousecomparisons. Example:Wethink______isthebestplaceforustogoonaschooltrip.Ofalltheplaces,itisthe________.Andwecanalso______.Soweallthinkitisagoodideatovisit________________. 一、单项选择1.(2021•北京中考)TheteacherisgladtoseethatTonyis______thanbefore.A.carefulB.morecarefulC.mostcarefulD.themostcareful2.(2021•吉林中考)—IsLarryas______asOliver?—No,heisn’t.Larryisshorter.A.tallerB.tallC.thetallestBBExercises 3.(2021•黄冈中考)—Whoisthegirldancingonthestage?—Oh,she’smyfriendMaria.Shedances______thanbefore.A.wellB.muchbetterC.bestD.thebest4.(2021•青海中考)—ChinesegovernmenthascontrolledCOVID-19______.—Ithinkso.Chinaistheonlycountrythatallowsmillionsofpeopletravelingaroundduringholidays.A.successfulB.moresuccessfullyC.mostsuccessfullyBC 5.(2021•新疆中考)—DoyouknowthatTomisoneof______studentsinhisclass?—Yes,Ido.He’sas______asmybrother.A.thetallest;tallerB.tallest;tallerC.thetallest;tallD.tallest;tall6.(2021•岳阳中考)HuaweiMate40is______ofthethreemobilephones.A.expensiveB.moreexpensiveC.themostexpensiveCB 二、用括号中所给单词的适当形式填空1.Thisquestionisquite__________.Thatoneis_____________thanthisone.(difficult)2.Ithinktabletennisisas_________assoccer.(excite)3.Whichofthesebookswouldyoulike________?(much)4.Takeexerciseonehouraday,andyouwillbecome________thanbefore.(strong)5.UncleWangdoesn’tdriveas__________asUncleLiu.IthinkUncleLiudrives_____________.(carefully)difficultmoredifficultexcitingmoststrongercarefullymorecarefully SummaryKeywordoceanUsefulexpressionthePacificOceanGrammar①较大数字的表达方法；②形容词和副词的比较级和最高级 1.Makecomparisonsabouttheplacesinourcity,andwriteaarticleusinglevelofadjective.2.PreviewthenewwordsandphrasesinSectionB.Homework