Unit7SectionAGrammar4c课件人教版八年级英语下册

What’sthehighestmountainintheworld?————————————————————————————————SectionA(GF-4C)What’sthehighestmountainintheworld?Qomolangma.HowhighisQomolangma?It’s8,844.43metershigh.It’shigherthananyothermountain.Whichisthedeepestsaltlakeintheworld?TheCaspianSeaisthedeepestofallthesaltlakes.DidyouknowthatChinais

oneoftheoldestcountriesintheworld?Yes,Idid.It’smucholderthantheUS.GrammarFocusFillintheblanksaccordingtothetext.1.—世界上最高的山峰是什么？—珠穆朗玛峰。—What’s___________mountainintheworld?—Qomolangma.thehighest2.—珠穆朗玛峰有多高？—它高8,848.86米。它比别的山都高。—HowhighisQomolangma?—It’s___________________.It’s______thananyothermountain.8,848.86metershighhigher3.—世界上最深的咸水湖是哪个？—里海是世界上最深的咸水湖。—Whichis___________saltlakeintheworld?—TheCaspianSeais__________________________.4.—你知道中国是世界上最古老的国家之一吗？—我知道。中国比美国古老得多。—DidyouknowthatChinais______________countriesintheworld?—Yes,Idid.It’s__________thantheUS.oneoftheoldestthedeepestthedeepestofallthesaltlakesmucholderGrammar回顾形容词和副词通常有三种级别：原级（Positiveform）：没有比较含义，“……”；比较级（Comparativeform）：两者间比较，“更……”；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。1．形容词比较级的句型结构(1)形容词的比较级＋than＋比较对象。前后相比较的两个事物一定要属于同类，而且作比较时，一定要避免自身与自身相比。表示一个范围内两事物比较，用“比较级＋than＋anyother＋单数名词”。如：Heismorecarefulthananyotherstudentinhisclass.

他比班上任何一个学生都认真。(2)as…as…意为“与……一样……”，其否定形式为“notso/as…as…”，意为“不及；不与……一样……”。它们也是一种表达比较的形式，注意as与as之间要用形容词或副词的原级。2．比较级的特殊句型the＋比较级，the＋比较级“越……越……”Thebusierweare，theunhappierwewillbe.比较级＋and＋比较级“越来越……”Ourcountryisgettingstrongerandstronger.比较级前可以用much，alittle，abit，even等修饰。如：Theshoesarealittlebiggerforme.

对我来说，这双鞋有点儿大。【注意】当比较级后有ofthetwo…之类的短语时，比较级前要加定冠词the。在选择疑问句中两者进行比较，常用句型：Which/When/Who＋be＋形容词比较级，AorB?3．形容词最高级的句型结构4．最高级的特殊句型疑问词＋be＋the＋最高级Whichisthebiggest，thesun，themoonortheearth？the＋序数词＋最高级“第几……”TheYellowRiveristhesecondlongestriverinChina.oneofthe＋最高级＋复数名词“最……之一”Shanghaiisoneofthebiggestcitiesintheworld.“主语＋be＋the＋形容词最高级＋in/of＋范围”表示“在某范围内最……”。(1)形容词最高级前通常要加定冠词the。但前面若有物主代词、指示代词或名词所有格等修饰时，不能用定冠词the。【注意】(2)形容词最高级常与介词in或of引导的短语连用，与in连用意为“在……内”，表示“在某范围内”，不一定是同类；与of连用表示“属性”，介词后的名词或代词与句中的主语是同一类人或物，意为“在某一类中”。1)Qomolangmais______thananyother

mountainintheworld.2)TheSaharais__________desertintheworld.3)TheCaspianSeais__________ofallthesaltlakes.4)TheNileis___________riverintheworld.5)What’s__________mountainintheworld?Fillintheblanks.higherthebiggestthedeepestthelongestthehighest6)Chinahas____________populationintheworld.7)It’salot________thanthepopulationoftheUS.8)Chinaisover5000yearsold.Ithasa_____________historythantheUS.9)Chinaisalmostas______astheUS,anditisthe_________countryinAsia.thebiggestbiggermuchlonger

bigbiggest10)—DidyouknowthatChinaisoneof__________countriesintheworld?

—Yes,Idid.It’s______________thanmycountry.11)Thismakesit__________wallintheworld.12)It’s______________part.13)Oneoftheworld’s______________sports

ismountainclimbing,andoneof

_______________placesforthisisthe

Himalayas.

theoldestmucholderthelongestthemostfamousmostdangerousthemostpopularhundredCanyoureadtheselargenumbers?26742,674twothousandsixhundredandseventy-four1.从数字右端向左数，每三位数加一个逗号；2.第一个逗号前的数为thousand（千）；3.读的时候通常在hundred后加and。thousandand大数字的表达与读法1835708918,357,089millionandeighteenmillion,threehundredandfifty-seventhousand,andeighty-ninethousand1.从数字右端向左数，每三位数加一个逗号；2.第一个逗号前的数为thousand（千）；第二个逗号前的数为million（百万）；第三个逗号前的数为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。1.英语没有“万”这个单位，要表示“万”须

借用thousand，如“一万”用“十个千

（tenthousand）”

表示，“十万”用“百个千

（onehundredthousand）”表示。2.在hundred后通常加上连词and。若读数中百位

数为0，则在thousand后加and。注意：5,764fivethousand,sevenhundredandsixty-four88,649eighty-eightthousand,sixhundredandforty-nine265,468twohundredandsixty-fivethousand,fourhundredandsixty-eight19,357,095nineteenmillion,threehundredandfifty-seventhousand,andninety-five4aFillintheblankswiththecorrectformsofthewordsinthebox.1.TheAmazonRiverisoneofthe_________riversintheworld.It’salittle________thantheYangtzeRiver.2.Qomolangmais8,844.43meters_______.It’soneofthemost__________placesforseriousmountainclimbers.3.Nooceanintheworldisas________asthePacificOcean.4.AlthoughJapanis_______thanCanada,itis________smaller.bigmuchpopularlongoldhighlongestlongerhighpopularbigoldermuch

太平洋

n.大海，海洋Lookatthetablebelowandmakesentencesbyusingcomparativesandsuperlatives.theNileRiver6,671kmtheAmazonRiver6,480kmtheYangtzeRiver6,300kmtheYellowRiver5,464kmTheNileRiveristhelongestriverintheworld.TheAmazonRiverisoneofthelongestriverintheworld.TheAmazonRiverisalittlelongerthantheYangtzeRiver.TheNileRiverismuchlongerthantheYangtzeRiver.4b.Writetwocomparisonsabouttwotopics.Writetruefacts.e.g.Tworivers:________________and__________________________________________________________________________________________________________________________________________________theYangtzeRivertheAmazonRiverTheYangtzeRiverisalmostaslongastheAmazonRiver.TheAmazonislongerthantheYangtze,buttheYangtzeisthelongestriverinChina.4b.Writetwocomparisonsabouttwotopics.Writetruefacts.Twocities:___________and_______________1.___________________________________2.____________________________________________________________________________Twoanimals:___________and_________1.___________________________________2.________________________________________________________________________SingaporeKualaLumpurKualaLumpurisasmodernasSingapore.SingaporeisbiggerthanKualaLumpurandhasalargerpopulationthanKualaLumpur.MonkeyDogAdogisbiggerthanamonkey.Amonkeyissmallerthanadog,butitclimbsatreefasterthanadog.4C

Writefivequestionsusingcomparisons.Thenaskyourpartneryourquestions.1._______________________________________2._______________________________________3._______________________________________4._______________________________________5._______________________________________Whatisthelargestshoppingmallinourcity?Whichisthebiggestparkinourcity?Whichisthelongestroadinourcity?Whatisthehighestbuildinginourcity?Whatisthebusiestsubwaystationinourcity?Exercises一、单项选择。1.Chinahasa______populationthanAmerica.A.more B.muchmore C.muchlarge D.muchlarger2.Xi’anisoneof_____inChina.A.morefamouscity B.mostfamouscitiesC.themostfamouscities D.muchmorefamouscity3.Chinaisthethird_____countryintheworld.A.large B.largest C.larger