Unit7SectionA（1a-2d）課件人教版八年級英語下冊

Unit7What’sthehighestmountainintheworld?Period1Watchavideo.What’sitabout?mountainriverlakeseasaltlakefreshlake/'dez?t/desertTravelaroundtheworldTravelaroundChinaTravelbacktoXiamenTravelaroundtheworld/?t???m???lɑ??m?/Qomolangma/s?'hɑ:r?/TheSaharaadesert/'k?sp??n/TheCaspianSea(asaltlake)/na?l/TheNileMatchthefactsyouknow.Qomolangmaabout9,600,000squarekilometers

insizeTheSahara1,025meters

deepTheCaspianSea6,671kilometers

longTheNile8,844.43meters

high1aQomolangmais….high.Observeandthink9,600,0001,0256,6718,844.431001,00010,000100,0001,000,00010,000,000100,000,0001,000,000,000thousandmillionbillion1,000,000,000.12point169,800,450.12

onehundredandsixty-ninemillionLargenumbersmillionthousandeighthundredthousand

fourhundredandfiftypointonetwopointonethousandfivehundredandsixty-eightLet’stry!sixteenthousandonehundredsixty-seventhousandeighthundredandninetytwothousandandeightfifty-twopoint

threefiveeighttwopointonesixzeropointone2.160.152.358462,680fourhundredandsixty-twothousandsixhundredandeightytwomilliontwohundredandtwenty-twothousandeighthundred2,222,800Observeandthink9,600,0001,0256,6718,844.43ninemillionsixhundredthousandeightthousandeighthundredandforty-fourpointfourthreeonethousandandtwenty-fivesixthousandsixhundredandseventy-one1:1---12:(記住每個(gè)單詞)

2:13---19:-teen(thir-,fif-,eigh-)3:20---90:-ty(twen-,thir-,for-,fif-,eigh-)4:21---99:十位_個(gè)位5:100,200,...900:_______hundred

6:101---999:_______hundredand

__個(gè)位十位___個(gè)位小結(jié):7:多位數(shù):1,000,000,000___billion,

__million,__thousand,__hundredand

(十億)(百萬)（千）個(gè)位十位__個(gè)位_Observeandconclude14year8,844meter9,600,000squarekilometer1,025meter6,671kilometersssssoldhighinsizedeeplong1bListenandcompletethesentences.1.Qomolangmais_________thananyothermountainintheworld.2.TheSaharais_____________desertintheworld.3.TheCaspianSeais___________ofallthesaltlakes.4.TheNileis_____________riverintheworld.*5.TheAmazonisthe____________riverintheworld.higherthebiggestthedeepestthelongestListeningskills:Beforelistening,readandtrytopredict.secondlongest聽力原文“the+序數(shù)詞+最高級+單數(shù)名詞+in…”

表示“是……中的第幾……”“比較級+thananyother+名詞+其他”表示“比其他任何一個(gè)……都……”注：該結(jié)構(gòu)可與“the+最高級+其他”相互轉(zhuǎn)換Listenandrepeat.PairworkMakeconversationsA:Whatisthe

highestmountain

intheworld?B:Qomolangma.A:How

high

isit?B:It’s

8,844.43metershigh.longest/deepest/biggest…Howlongisit?It’s6,671kilometerslong.Howbigisit?It’s9，600，000squarekilometersinsize.Howdeepisit?It’s1025metersdeep.TravelaroundChinaChinaisoneoftheoldestcountriesintheworld.It’sover5000yearsold.Chinahasthe

mostpeopleontheearth.AnditisthebiggestcountryinAsia.AsChinese,howmuchdoyouknowaboutourmotherland?ThedifferencesbetweenChinaandAmericaover5000yearslessthan300yearsChinaismucholderthantheUS.ChinahasamuchlongerhistorythantheUS.historyThedifferencesbetweenChinaandAmerica1,4billion322millionpopulationThepopulationofChinaisalotbiggerthanthatoftheUS./?p?pju?le??n/What’sthepopulationofChina?ThedifferencesbetweenChinaandAmerica9,634,057squarekilometers9,631,420squarekilometersChinaisalmostasbigastheUS.ChinaisaboutthesamesizeastheUS.sizeThedifferencesbetweenChinaandAmericatheYangtzeRivertheMississippiRiverthelongestriver2a/2bNumberthefactsinorder,thenfillintheblankswiththenumbers.___TheYangtzeRiverisabout_______kilometerslongandtheYellowRiveris______kilometerslong.___Chinahasthebiggestpopulationintheworld.It’salotbiggerthanthepopulationoftheUS.___Chinaisover______yearsold.IthasamuchlongerhistorythantheUS.TheUSisnoteven_____yearsold.___ChinaisalmostasbigastheUS,butitisthebiggestcountryinAsia.42136,3005,0005,4643006,3005,4645,000300Listeningstrategy:Findoutkeywordstohelpyoulocatetheanswers.聽力原文①②③④Listenandrepeat.Wearetalkingaboutsth.thatisalwaysorgenerallytrue,i.e.facts,soweusethesimplepresenthere.e.g.Theteachersaidthereare1,440minutesinaday.Attention!“Didyouknow”ismorepolitethan“Doyouknow”here.Thissentencemeans:1.It’sOKifyoudidn’tknow,becauseIcansharetheinformationwithyou.(Thenthepersonwhoisaskedthequestionwillnotfeeluncomfortableifhe/shedidnotknow.)2.Youmightalreadyknow,butitdoesn’tmatterbecauseIcanstillsharetheinformationwithyouandwecantalkaboutitmore.Payattentiontothesecomparativestructures.同級比較結(jié)構(gòu)Summary-Geographicfacts之最A(yù)

is

thehighest/longest/biggest/deepest/oldest(mountain/sea/country)intheworld.A

has

thebiggest/largest

populationintheworldA

has

thelongest

historyintheworld2.Figures(數(shù)據(jù))A

is

8844.43

meters/kilometers/squarekilometershigh/deep/long/wide/insize.數(shù)字單位高/深/長/寬/大小TravelbacktoXiamenActivityI’mafive-starguide!GulangyuIslandZhongshanRoadXiamenWuyuanNo2.ExperimentalSchoolAmoyCircularRoadSize334.64km2population3,920,000MountainYundingMountain(1175.2m,thehighest)IslandGulangyuIsland(morepopularthananyotherplace)PlacesofinterestZhongshanRoad(1.2kmlong),XiamenWuyuanNo2.ExperimentalSchool(oneofthemostbeautiful)…

You’reatourguide.PleaseintroduceXiamentothevisitors.Usethefollowinginformationtohelpyou.

ActivityI’mafive-starguide!Goodmorning,everyone.WelcometoXiamen.I’myourtourguideXX.TodayIwillshowyouaroundXiamen.FirstI’dliketotellyousomethingaboutXiamen...Ihopeyou’llhaveagreattime.Size334.64km2population3,920,000MountainYundingMountain(1175.2m,thehighest)IslandGulangyuIsland(morepopularthananyotherplace)OtherplacesofinterestZhongshanRoad(1.2kmlong),XiamenWuyuanNo2.ExperimentalSchool(oneofthemostbeautiful)…ShowTimeI’mafive-starguide!2.HowlongistheMingGreatWall?Readthedialoguein2d,thenanswerthequestionsbelow.It’sabout8,850kilometerslong.Themainreasonwastoprotecttheirpartofthecountry.Yes,it’sthemostfamouspart.3.Whydidtheancientemperorsbuildthewall?4.IsBadalingpartoftheMingGreatWall?What’stheconversationabout?It’saboutatourtotheGreatWall.2dRole-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.長江長約6,300千米。黃河長5,464千米。長江比黃河長。長江是中國最長的河。TheYangtzeRiverisabout6,300kilometerslong.TheYellowRiveris5,464kilometerslong.TheYangtzeRiverislongerthananyotherriverinChina.TheYangtzeRiveristhelongestriverinChina.TheYangtzeRiverislongerthantheYellowRiver.Translatethefollowingsentences.計(jì)量的表達(dá)方法可以是：基數(shù)詞+度量詞(單/復(fù)數(shù))+形容詞(high/old/long/wide/tall/deep/thick等)。比較級用于比較兩個(gè)主體，之后可用than引出比較的對象“比較級+thananyother+名詞+其他”

表示“比其他任何一個(gè)……都……”該結(jié)構(gòu)可與“the+最高級+其他”相互轉(zhuǎn)換Goliathisthe_______elephantintheforest.Hisfatheristhe

_______elephantintheforest.Watchandfillintheblanks.

smallestbiggest形容詞的最高級前面要加定冠詞the三者或三者以上的人或物進(jìn)行比較時(shí)，用最高級。在含有最高級的句子中，常有一個(gè)in/of短語來表示比較范圍。Observeandlearn1)Qomolangmais______thananyothermountainintheworld.2)TheSaharais__________desertintheworld.3)TheNileis___________riverintheworld.4)Chinahas___________populationintheworld.5)It’salot______thanthepopulationoftheUS.Fillintheblanks.higherthebiggestthelongestgoReady?thebiggestbigger6)Chinaisover5000yearsold.Ithasa___________historythantheUS.7)Chinaisalmost_________theUS,anditisthe_______countryinAsia.8)Thismakesit__________wallintheworld.9)It’s_______________part.10)Oneoftheworld’s______________sportsismountainclimbing,andoneof_______________placesforthisistheHimalayas.

muchlongerasbigasbiggestthelongestthemostfamousmostdangerousthemostpopular形容詞和副詞的比較級和最高級大多數(shù)形容詞和副詞都有三個(gè)級1)

原級:常用結(jié)構(gòu)as...as...“和..….一樣”ZhangHongisas

tallas

Tom.張紅和湯姆一樣高。

2)比較級

(用于兩者之間的比較)常用結(jié)構(gòu)：比較級＋than...HeistallerthanI.他比我高。

Grammar3)最高級(用于三者或三者以上的比較)，常用結(jié)構(gòu):the+最高級+of/in...

Heisthetallestofthethree.他是這三個(gè)人中最高的。

Heisthefunniestinhisclass.他是他們班最有趣的。

形容詞、副詞比較級和最高級的構(gòu)成a)規(guī)則變化1)一般情況下，單音節(jié)或雙音節(jié)的形容詞（或副詞）比較級＋er，最高級＋estclever－cleverer－cleverest

few－fewer－fewest

small－smaller－smallest等2)以e結(jié)尾的詞，比較級＋r，最高級＋st

nice－nicer－nicest

cute－cuter－cutest

large－larger－largest等3)以輔音字母＋y結(jié)尾的，變y為i＋er或esteasy－easier－easiest

happy－h(huán)appier－h(huán)appiest等4)以一個(gè)輔音字母結(jié)尾的重讀閉音節(jié)，雙寫輔音字母＋er或estfat－fatter－fattest

thin－thinner－thinnest

hot－h(huán)otter－h(huán)ottest

wet－wetter－wettest

big－bigger－biggest等5)多音節(jié)和部分雙音節(jié)的詞需要在形容詞原級前＋more構(gòu)成比較級，＋themost構(gòu)成最高級beautiful－morebeautiful－themostbeautifuldelicious,popular,important,interesting,expensive,creative雙音節(jié)的詞careful－morecareful－themostcareful

useful－moreuseful－themostuseful6)不規(guī)則變化

good—better—bestwell—better—best

bad－worse

－worst

many,much—more—most

far—farther—farthest

(距離遠(yuǎn))

far—further—furthest

(程度深)old—elder—eldest

(長幼)

old—older—oldest

(年齡)形容詞和副詞比較等級的常用結(jié)構(gòu)1.“比較級+thananyother+名詞+其他”表示“比其他任何一個(gè)……都……”該結(jié)構(gòu)可與“the+最高級+其他”相互轉(zhuǎn)換Thebagischeaperthananyother

baginthestore.=Thebagisthecheapest

inthestore.2.“比較級+and+比較級”表示“越來越……”Theearthisgettingwarmerandwarmer.地球變得越來越暖和。3.“the+比較級,the+比較級”表示“越……，就越……”Themoreyoupractice,thebetteryou’llplaythepiano.4.“the+比較級+ofthetwo”表示“兩者之中更……的那一個(gè)”

Susanisthetallerofthetwogirls.5.“數(shù)詞+times+比較級+than”表示“……是……的幾倍”Theelephantweighstentimesmorethanthepanda.另:比較級前可用much,alittle,alot,even等修飾，表強(qiáng)調(diào)，如：Thegirlsangevenworsethistimethanusual.6.“oneofthe+形容詞最高級+復(fù)數(shù)名詞”意為“最……之一”Itisoneofthebesttheatersinourtown.7.“the+序數(shù)詞+最高級+單數(shù)名詞+in…”表示“是……中的第幾……”TheYellowRiveristhesecondlongestriverinChina.Fillintheblankswiththecorrectformsofthewordsinthebox.4abigmuchpopularlongoldhighTheAmazonRiverisoneofthe_______riversintheworld.It’salittle______thantheYangtzeRiver.Qomolangmais8,848.43meters_____.It’soneofthemost________placesforseriousmountainclimbers.3.Nooceanintheworldisas___asthePacificOcean.4.AlthoughJapanis_____thanCanada,itis_____smaller.longestlongerhighpopularPracticeP52bigoldermuchWritetwocomparisonsabouttwotopics.Writetruefacts.4bTwocities:SingaporeandKualaLumpur(吉隆坡)KualaLumpurisasmodernasSingapore.SingaporeisbiggerthanKualaLumpurandhasalargerpopulationthanKualaLumpur.Forexample:策略：可以比較城市的面積、人口、歷史等P52Twoanimals:MonkeyandDogAdogisbiggerthanamonkey.2.Amonkeyissmallerthanadog,butitclimbsatreefasterthanadog.策略：可以比較動(dòng)物的身高(身長)、體重、奔跑速度、外貌特征以及壽命等Pairwork4cWritefivequestionsusingcomparisons.Thenaskyourpartneryourquestions.Whatisthehighestbuildinginourcity?Whatisthelargestshoppingmallinourcity?Whichisthebiggestparkinourcity?Whichisthelongestroadinourcity?What’sthebiggestcityinChina?...注意：在使用比較級或最高級時(shí)要有相對明確的比較范圍或參照物P52Review課時(shí)重點(diǎn)回顧形容詞的比較級和最高級比較級：主語+謂語(系動(dòng)詞)+形容詞比較級+than+對比成分最高級：主語+謂語(系動(dòng)詞)+the+形容詞最高級+名詞+表示范圍的短語或從句句型例子比較級A+實(shí)義動(dòng)詞+副詞比較級+than+BTomworksfasterthanDavid.IspeakEnglishmorefluentlynowthanlastyear.最高級A+實(shí)義動(dòng)詞+副詞最高級(+of/in…)，副詞最高級前的the可省略Ijumped(the)highestinmyclass.Ourteamplayed(the)worstofall.副詞的比較級和最高級1.Amale(雄性)pandaisusually_______

(heavy)thanafemaleone.2.Withfewercars,Ithinkthetownwillbe

_______(green)and_______________

(beautiful).3.Mydogisthe________(clever)animalofall.4.Marytakesmuchexercisethesedays.Shelooksalittle_______(slim)now.5.Footballisthe____________(popular)gamearoundtheworld.I.Fillintheblanks.heaviergreenermorebeautifulcleverestslimmermostpopularCheckyouranswer.6.IthinkEnglishis____________(difficult)thanChinese.7.Don’tspeakEnglishtoofast.Pleasespeakit_______(slow).8.Mybrotheralwaysgetsup______(early)thanmeeveryday.ButIhavebreakfast____________(quick)thanhim.9.Whosings___________(loudly),AmyorMary?10.Thisterm,Daminglistenstotheteacher___________