外研版英语八年级上册Module9单元课件

外研版英语八年级上册单元课件Module9Population2018年12月1．unit12．

unit23．

unit3（单击上面课题进入对应幻灯片）Module9Population9PopulationModuleUnit1ThepopulationofChinaisabout1.37billion.Doyouknowhowmanypeoplearethereintheworldnow?7billionOneday,theworldwillbelikethis.HowaboutChina?It’sabout1.37billion.China'sPopulation

-OverviewGraspthekeywordsandkeystructure:

noise,prepare,notes,report,grow,problem,birth,billion,fifth;Beijingisahugecitywithalargepopulation.Thatmakesover131.4millionbirthsayear.2.Readingaim:Tobeabletoreadandunderstandlargenumbers.3.Affection:weshouldcaremoreaboutthepopulationproblemsofourcountry.

Teachingaims/nɔIz

//prI'peə

//nəuts

//rI'pɔ:t

//ɡrəu

//hju:dʒ/

/kɔ:z

/噪声;杂音n.noise

准备；预备v.prepare笔记；随笔n.(pl.)report报告；汇报n.(grew/ɡru:)增长；增大

v.notesgrowWordsandexpressionshuge造成；引起v.巨大的；庞大的

adj.cause/'prɔbləm//'Iŋkri:s

//bə:θ//'bIljən

//fIfθ/hangon/flæt

/麻烦；问题n.problem增大；增长n.增大；增长vincreasebirth出生

n.十亿num.第五；num.billion稍等套房；公寓n.flatfifth1Workinpairs.Lookatthepictureandtalkaboutit.Usethewordsintheboxtohelpyou.

noisepeoplespacetraffic2Listenandcheckthecorrectanswer:1WhatisthepopulationofBeijing?a)About11millionb)About13millionc)About20million2WhatisthepopulationofChongqing?a)About28millionb)About33millionc)About36million√√3.ListenandreadEverydayEnglishIcan’tbelieveit!Hangonaminute!Great!Thenlistenandread.Betty:Whatareyoudoing?Tony:I’mpreparingsomenotesforareportcalled“Ourgrowingpopulation”.Lingling:Well,we’reintherightplacetotalkaboutthat!Beijingisahugecitywithalargepopulation.Thatcausesalotofproblems,suchastoomuchtrafficandnoise.Betty:It’snotonlyBeijing.Populationincreaseisabigprobleminmanycountries.Doyouknowhowmanybabiesareborneveryminuteintheworld?Tony:No.Canyoutellme?Betty:Over250!Thatmakesover131.4millionbirthsayear.Lingling:Ican’tbelieveit!Betty:ThepopulationofChinaisabout1.37billion.That’salmostonefifthoftheworld’spopulation,thatis,about7billion.Tony:Hangonaminute!Iwillwritethatdowntoo!Betty:Butinthefuture,China’spopulationwon’tgrowsofast,becausefamiliesaregettingsmaller.Lingling:Howdoyouknowallthis?Betty:Iwrotemyreportyesterday!Tony:Great,thanks!NowIcanwritemyreport!Babiesborneveryminuteintheworld:Babiesborneveryyearintheworld:PopulationofChina:Populationoftheworld:Nowcompletethenotes.over250over131.4millionabout1.37billionabout7billion4Choosethecorrectanswer.1Birthhappensatthestart/attheendoflife.2Hugemeanslarge/small.3Anincreaseinpopulationmeansmore/fewerpeople.4Hangonaminutemeanswaitforashorttime/alongtime.7Areportisalongpieceofwriting/afewwords.8Abillionisahundred/athousandmillion.5Makingnotesmeanswritingalongpassage/afewwords.6Aproblemissomethingeasy/difficult.Pronunciationandspeaking5Listenandrepeat.8,742eightthousand,sevenhundredandforty-two.2,463,128twomillion,fourhundredandsixty-threethousand,onehundredandtwenty-eight1,370,000,000onebillion,threehundredandseventymillion2,000,030,000twobillionandthirtythousand6Check(√)thestatementsyouagreewith.1Therearetoomanypeopleintheworld.2Theincreasingpopulationisthebiggestproblemintheworld.3Peopleshouldnothavetoomanybabies.4Acityshouldnotholdmorethanonemillionpeople.Nowworkingroupsanddiscussyouranswers.√√GrammarFocus(一)数词Numeral数词是用来表示事物的数目和顺序的词。数词的分类：1.基数词2.序数词3.分数词今天我们先来学习一下基数词。1.复习1—100以内的所有数字。2.掌握百、千、万、十万、百万的表达法。1、1-19的基数词one1two2three3four4five5six6seven7eight8nine9ten10

eleven11twelve12thirteen13fourteen14

fifteen15sixteen16seventeen17eighteen18nineteen192、20—90等十位数twenty20thirty30forty40fifty50sixty60seventy70eighty80ninety90twenty-one21twenty-two22………………其它的十位数照此类推，如：

thirty-one31

forty-two42

seventy-five75

3、百、千、万

百hundred

100onehundred200twohundred

以此类推····千thousand1000onethousand2000twothousand·········英语里没有“万”这一单位，万也用thousand表示。如：10000tenthousand20000twentythousand·····4、十万、百万十万的说法是：

100,000

a(one)hundredthousand

200,000

twohundredthousandmillion百万

a(one)million1000000

twomillion2000000

········以此类推······

8000000eightmillion练一练345100118,657,421threehundredandforty-fiveonethousand(and)oneeighteenmillion,sixhundredandfifty-seventhousand,fourhundredandtwenty-oneTheprojectlasted5yearsandcost2billion

dollars.2.TheChinesehavebeenmakingpaperfor

twothousandyears.3.Onethousandpundsisalotofmoney.表示确定数量时用基数词+hundred，thousand，million，billion多位基数词读法457890608389threehundredandeighty-ninefourhundredand

fifty-seveneighthundredand

ninetysixhundredand

eight

1）101~999的三位数由“百位数＋and+两位数组成”。

如：325—threehundredandtwenty-five

102onehundredandtwo635sixhundredandthirty-five2)三位数以上的数，从个位往前数，每三位数加一个逗号，从后往前数的第一个逗号代表thousand,第二个逗号代表million,第三个逗号是billion，注意这几个词不能用复数形式，后也不能加and。例如：

2,648twothousand,sixhundredandforty-eight16,250,064sixteenmillion,twohundredandfiftythousand,sixty-four确切数目与不确切数目的表达：hundred,thousand,million,billion等前面有基数词，表示确切数目时，用单数，后直接接复数名词；如：threehundredbooks

onehundredpeople

fivethousandstudentssevenmillionstarts表示不确切数目时，这类词后加-s且与of连用。如：

hundredsofpeoplethousandsofstudentsmillionsofbirdsbillionsoflions注意：这类短语中，名词前如有定冠词、指示代词或形容词性物主代词时，可加of,但表示的是范围。如：twohundredoftheworkers工人中的二百（人）GrammarFocus(二)冠词Articles◆冠词的定义◆不定冠词的用法◆定冠词的用法◆不用冠词的情况◆用冠词和不用冠词的差异一.冠词的定义

冠词是一种虚词，没有词义，没有数和格的变化，不能单独使用，只能帮助名词或起名词作用的其他词类说明其意义。冠词分定冠词和不定冠词两大类。定冠词特指一特定名词，不定冠词泛指一般普通名词。二.不定冠词的用法不定冠词有a和an两种形式，a用在以辅音开头的名词前，an用在以元音开头的名词前。它的用法如下：1.表示“一个”的意思，与数词one相同。例如：Romewasnotbuiltinaday.罗马不是一天建成的；伟业非一日之功。2.表示一类人或事物。例如：Adogisafaithful（忠诚的）animal.

Evenawomancandoit.3.表示“每一”，相当于per，用于某些表示时间、重量、长度等单位前。例如：Heearnstwothousandyuanamonth.Thetrainisrunningsixtymiles(英里)anhour.4.表示同样的人或事物，相当于thesame。例如：Birdsofafeather（羽毛）

flock(一群）together./Theyarepeopleofakind.一群同样羽毛的鸟在一起/物以类聚，人以群分。

5.物质名词或抽象名词前用a或an表示具体意义、制成品或种类。例如：Greenteaisawonderfultea.

Sheisabeauty.（美人）Pleasegivemeacoffee.6.用于人名前，表示说话者对此人不认识，相当于“acertain”，也可指于某名人有类似性质的人或事物。例如：AMr.Chencametoseeyouthismorning.

HewishestobecomeaNewton.7.有些世界上独一无二的东西，如sun,moon,sky,universe（宇宙）,world（世间，地球）,earth（地球）等，一般前面要用定冠词，但当他们前面有修饰语时，则要用不定冠词。例如：Wehopewecanseeafullmoontonight.Hesatinachair,lookingatastarry布满星星的sky.8.在作单数可数名词定语的形容词最高级前，如果不表示“最”，而表“非常”，则用不定冠词。例如：

Thatisabestdictionary.

Thisisamosttroublesome（费事的）case（情形，情况).9.序数词前，一般有定冠词，但当表示“又一个”时，则要用不定冠词。例如：Theyhaveasecondhouse.

WhenIsatdown,afifthmanrose(动词,rise的过去式,“站起来”）tospeak.10.季节、月份、日期、三餐前有修饰语时，用不定冠词。例如：Wehadawonderfullunch.Wehadaverycoldwinterlastyear.11.用在某些固定的短语中例如：onceuponatime（从前)inahurry（匆匆忙忙）

havearesthaveagoodtime

havealookallofasudden（突然地）haveacold/fever（发热）/cough/headacheLanguagepoints1.Beijingisahugecitywithalargepopulation.Thatcausesalotofproblems,suchastoomuchtrafficandnoise.

北京是一个人口众多的大城市。那会引起众多问题，比如交通拥挤，噪音污染等。

(1)

populationn.人口,人数1)集体名词,无复数形式,在句中作主语时,谓语动词用单数形式.

目前的人口增长很快。Thepopulationtodayisgrowingveryfast.2)population之前若有分数或百分数修饰时,用于指具体人数作主语时,谓语动词则用复数形式.这儿大约有五分之三的人口是农民。

Aboutthreefifthsofthepopulation

herearefarmers.3)表示某一范围内有多少人口时,用hasapopulationof+数词.

中国有13亿人口。Chinahasapopulationof1.3billion.4)问某地有多少人口时,用

Whatis/wasthepopulationof+地名?

中国有多少人口?

What’sthepopulationofChina?(5)表示人口的多少时,用large或small修饰,而不能用many,more或few等.

中国是世界上人口最多的国家。

Chinahasthelargestpopulationoftheworld.(2)

toomuchtoomuch太多+不可数名词toomany+可数名词,是“非常多”的意思muchtoo=quite+形容词/副词,是非常/十分2.Hangonaminute!Iwillwritethatdowntoo!等等，我要把这点也记下来！Hangon表示“让某人等一下”；例如：Sally’sontheotherphone—wouldyouliketohangon?萨利再接另一个电话，请您稍等一下可以吗？Hangon!I’llbebackinaminute.稍等！我马上回来。一、用英语写出下列数字：ninety-eightthousandsevenhundredandfifty-fourNinehundredandeighty-threeExercisefivehundred(and)sixty-sixsevenhundredandnine566__________________________________709__________________________________983_________________________________98754_______________________________

________________________________3872threethousandeighthundredandseventy-two46290forty-sixthousandtwohundredandninety58230

fifty-eightthousandtwohundredandthirty59684,3219,648,215fivehundredandninety-sixeighty-fourthousandthreehundredandtwenty-oneninemillion,sixhundredandforty-eightthousand,twohundredandfifteen二、翻译下列句子。1.北京人口是多少？___________the_____________Beijing?2.中国的人口大约为13亿。The_____________China_____________________.Whatispopulationofpopulationofisabout1.3billion4.增长的人口给一些国家带来众多问题。An____________________causes____________insome_____.

3.人口太多，空间不够。Thereare____________peopleandthereisnot_____________.toomuchenoughspaceincreasingpopulationmanyproblemscountries()1.Thebikecostme________yuan.Afivehundredandforty

Bfivehundredsforty

Cfivehundredforty

DfivehundredfortyA

()2.____peopleintheworldaresendingandreceivinge-mailseveryday.

A.Millionof

B.Manymillionsof

C.SeveralmillionofD.SeveralmillionsB三、单项选择。()3._______treeswereplantedonthemountainlastyear.

A.ThousandsofB.Thousandof

C.FivethousandofD.Fivethousands.A

()4.---Canyouwritethenumbereighty-five

thousand,six

hundredandtwenty-six?---Yes,itis__________.A.856620B.85626C.58662D.58626B5_______isthepopulationofyourcountry?

A.Howmany

B.Howmuch

C.Which

D.What

6Astimegoeson,theworld’spopulation

is_________.

A.moreandmore

B.largerandlarger

C.smallerandsmaller

D.fewerandfewerBDHomeworkPracticewithyourclassmatestospeakandwritelargenumbers.Writesomenumbercarsandputtheminyourroom.Wheneveryousee,readthemquickly.Module9Module9PopulationUnit2Arnwickwasacitywith200,000people.Whatdotheincreasingpopulationneed?Lead-inTheyneedmoreflats.Whatdotheincreasingpopulationneed?Theyneedmoreshops.Whatdotheincreasingpopulationneed?Theyneedmorehospitals.Whatdotheincreasingpopulationneed?Theyneedabetterpublicbusservice.flatquietlocalrubbishsolvepupilDoyouknowthesewords?pollutionpublicservice1.Whydopeoplemovetocities?2.Whataretheproblemsofbigcities?countrysidefieldflathospitaljobofficerubbishvillageWorkinpairs.Askandanswerthequestions.Usethewordsintheboxtohelpyou.Readingandvocabulary1.Wheredidpeopleliveaftertheymovedtocities?Theylivedinflatsoutsidethecentre.2.WhendidthesmalllocalschoolinParkvilleclosedown?Fiveyearsago.Listentothepassageandanswerthequestions.1.HowlongwillittaketogotoschoolinArnwick?

2.WheredoesJo’sfamilylivenow?

3.Wasitexpensivetoliveinthecentreofthecity?Anhour.Inoneofthoseflats.Yes,itwas.Readthepassageandanswerthequestions.√√√Checkthetruesentences.1.Parkvillewasaquietvillage.2.Arnwickwasacitywith20,000people.3.Arnwick

nowhasapopulationofmorethanonemillion.4.ThelocalschoolinParkvillehas2,000pupils.5.Bigcitiesneedmoremoneyforpublicservices.flatlocalpollutionrubbishservicethousandManytownsandcitieshavethesameproblemsasArnwick.Peopleneedplacestolive,sothe(1)____governmenthastobuildmore(2)____.localflatsCompletethepassagewiththecorrectformofthewordsinthebox.Peopleneedbetterbusandtrain(3)_______.Theyalsoproducemore(4)_______,sothegovernmenthastomakemoreeffortstoprotectthecityagainst(5)________.Aswesay,ahundredpeoplemakea(6)________problems!servicesrubbishpollutionthousand()Manyyoungpeoplewanttoleavethecountrysidebecausetheywanttofindjobsinthecity.()Therearenotenoughschoolsandhospitals.Readandchecktheproblemsthatexistinyourhometown.Writing()Toomuchtrafficbringsairpollution.()Thereistoomuchrubbishinthestreets.()Therearen’tenoughpoliceinthecity.()It’sdifficulttogetenoughcleanwater.Writedownyoursuggestionstosolvetheproblemsinyourhometown.1....,sothegovernmentbuiltflatsoutsidethecentre.

flats表示“公寓，套房”

house表示“房子”Languagepoints2.It’s

clearthatArnwickneedsmoreschools,busesandhospitals.

It’sclearthat…表示“很清楚…...”。e.g.It’sclearthatweneedtoworkhardbeforethecomingfinalexam.

很明显，我们要在即将到来的期末考试前努力学习。3.ThesmalllocalschoolinParkvillecloseddownfiveyearsago.

localadj.

当地的

closedown表示“（永久性地）停工，关闭”。e.g.Thecompanycloseddownlastyear.

去年那家公司关闭。4.Thereisalotoftrafficandpollution.

pollutionn.

污染

pollutev.

污染e.g.Noisepollutionismoreseriousinthecity.

噪音污染是城市中更为严重的问题。

冠词有三种形式：不定冠词a(n),定冠the和零冠词。一、不定冠词的用法。首次提到某人某人,不定冠词起介绍作用。e.g.I’mpreparingsomenotesforareport.

我正在为一个报告准备笔记。Grammer冠词2.表示“每一”的概念，相当于every。e.g.Igotothecinemaonceamonth.

我一个月去看一次电影。3.某些固定短语中，要用不定冠词。e.g.haveagoodtime,inahurry,haveabreak二、定冠词的用法。1.指前面提到过的人或物，或特指某人或某物。e.g.Ihaveadog.Thedogisbrown.2.指谈话双方都知道的人或物。e.g.Ihadtowritethesamereportlastterm!3.用于序数词以及形容词的最高级之前。e.g.Hewenttothefirstfloor.4.用于世界上独一无二的事物。e.g.Thesunisshiningbrightly.5.在江河、海洋、山脉等地理名词前及由普通名词构成的专有名词前。e.g.theGreatWallofChina6.用于表示方位名词前。e.g.GuangdongisinthesouthofChina.7.用在弹奏乐器中。e.g.Theboyisplayingthepiano.8.在某些形容词前加定冠词，表示一类人或物。e.g.Theoldaredancingonthe

playground.9.在姓氏复数形式之前,表示“一家人”或“夫妇两人”。e.g.TheBrownsarereallyalargefamily.10.用于某些固定短语中。e.g.bytheway三、零冠词。1.在球类活动、学科名称前，以及节日、月份、星期前不用冠词。e.g.1stJuneisChildren’sDay.2.名词前已有指示代词、物主代词、不定冠词或数词等作定语的名词前不用冠词。e.g.Ihaveseveralquestionstoask.3.在某些固定词组和习惯用语中不用冠词。e.g.bybusatnightintrouble冠词的用法。重点短语。

buildflatsinfactclosedownpublicservice

Summary1.—Pleasemake_____fortheoldwoman.—Hereyouare.A.houseB.flatC.room2.Thepaperfactory_____lastyearandthevillagerswereveryhappytohaveabetterlife.A.closedoffB.closedawayC.closeddownCCExercises3.Air______isaseriousprobleminbigcities.A.pollutionB.polluteC.rubbish4.Thegovernmentneedstomake______toprotecttheforest.A.lawsB.storiesC.waysAA中考链接—Becareful!Thereis____doglyingontheground.—Thanksalot.A.aB.anC.theD./2.Thereisnolivingthingon______moon.A.theB.aC.不填AA3.Billlikesplaying_____basketball,buthedoesn’tlikeplaying_____piano.A.the,theB./,theC.the,/BWriteapassagetotellabouttheproblemsofyourcity.9PopulationModuleUnit3

LanguageinuseBeijingisahugecity.Ittakesanhourtogettherebybus.That’salmostonefifthoftheworld’spopulation.Thatmakesover131.4millionbirthsayear.Languagepractice

1.Workinpairs.Matchthecountrieswiththeirpopulations.1Chinaa)4,437,0002theUSAb)22,956,0003Australiac)314,791,0004NewZealandd)1,370,537,000Whenyouseeatableorachart,lookcarefullyatthelabelsandgraphstomakesurethatyouunderstandwhattheyareshowing.Lookatthechartbelow.Whatisitcomparing?Whatcanyouconclude?Learningtolearn2.ReadyouranswerstoActivity1tothewhole

class.Chinahasapopulationof…Nowlistenandcheck.3.Readthechartandanswerthequestions.1Whichcityhadthelargestpopulationin2000?2Whichcity’spopulationwillincreasethemost

from2000to2025?Tokyohadthelargestpopulationin2000.Mumbai'spopulationwillincreasethemostfrom2000to2025.3Whichcitywillhavealargerincreaseinits

population,NewYorkorMexicoCity?4Whichcity/citiesdoyouthinkwillhave

thebiggestpopulationproblem?Why?Mexicocity.IthinkMumbaiwillhavethebiggestpopulationproblembecauseitspopulationwillincreasethefastest.4Completethepassagewitha,anorthe

wherenecessary.Minais(1)____eighteen-year-oldgirl.Shehasgot(2)____brotherand(3)_____sister.Minais(4)___oldestchildin(5)____family.Shelivesin(6)____verybigcity.Shehas(7)______jobin(8)_____hotel.Shehopesthatonedayshewillhave(9)_____chancetogoto(10)_____college.aanathetheaaaa/5Completethesentenceswiththecorrect

formofthewordsinthebox.

fewgoodmuchsmall1WebelievetheschoolsinArnwickareverygood,andweareworkingtomakethemeven_______.2Theirflatistoolargefortwopeople.Theywanttofinda_______one.3Annaalwaystalksaboutherideas.Ithinksheneedstolisten_______.4Therearealotofparksinthiscity.Ithinkthereare_______parksinalotofothercities.bettersmallermorefewer6Completethediagramshowingpopulationproblems.Usethewordsintheboxtohelpyou.aircitycountryhospitalincreasepublicservicetrafficwaterProblemsofArnwickProblems:Population___________Peoplearrivein_________thecityincreasesPeoplemovefrom_______thecountrysideEnvironmentalproblemsExample:______________________________________________________HealthproblemsExample:______________________________ProblemsforthegovernmentExamples:___________________________________________________________________________________________________①airpollutionwaterpollutiontoomuchtrafficrubbish③②notenoughhospitalsneedmoreschoolsandbusesneedbetterpublicservicesneedmorepolicetoprotectpeople7Completethepassagewiththewordsinthebox.

countryside pollutionpopulationspacetrafficOurworldisfacingmanyproblems.Twoofthebiggestareincreasingpopulationandpollution.The(1)_____________oftheworldisincreasingquickly.Whyisthishappening?Becausemorebabiesareborneveryyearandpopulationpeoplealsolivelonger.Manypeopleareleavingthe(2)_________toworkinthecities,butthereisnotenough(3)__________forsomanypeople.Anotherhugeproblemfortheworldis(4)__________.Thereissomuch(5)________ontheroadsthatinsomecitiestheairisheavilypolluted.Wemustworkhardertoprotectourworld.countrysidespacepollutiontrafficallovertheworldcloseddowninthefutureittakesnot…anymore 8

Completethesentenceswiththeexpressionsinthebox.1Growingpopulationisaproblem________________________.2ThepopulationofChinamaygrowmoreslowly

.3Thesupermarket

whenabiggeroneopenedinthetown.allovertheworldinthefuturecloseddown4Usually

anhourtogettherebybus.5Thetownhadalotofpopulationinthepastbutitis

aproblem

.ittakesnotanymore9Listenandchoosethebestsummary.Itischeapertoshareacarthantohavea

personalcar.b)Peopleinacarclubdonotoftentake

buses,trainsortheunderground.c)TherearenocarclubsintheUS.d)Joiningcarclubsisgoodforyouandforthecity.√10Listenagainandchoosethecorrectanswer.1Joiningacarclubischeaper/moreexpensive

thanhavingapersonalcar.2Peopleincarclubspayfor/donotpayforacarwhentheydrive.3Peopleincarclubssometimes/nevertakeabusorrideabike.4Peopleincarclubsprobablyare/arenot

healthier.11Workinpairsanddiscussthisquestion.DoyouthinkcarclubswouldbepopularinChina?Why/Whynot?Inmyopinion,carclubs…Aroundtheworld

WorldpopulationandwaterWithmoreandmorepeopleintheworld,moreandmorewaterisused.Infact,wateruseisgrowingmorethantwiceasfastastheworld’spopulation!Asaresult,gettinggood,cleanwaterisbecomingaprobleminmanyplaces.Alotofwaterispollutedandinmanyareaspeoplehavetowalkalongwaytogetcleanfordailyuse.Morethan3.4millionpeopledieeachyearfromdrinkingandwashingwithpollutedwater.Solet’sdoeverythingwecantostopthepollutionandsavewater.12Workingroups.Preparetomakeyourgraph.

Chooseacountryortownwhichinterestsyou.Itcouldbeyourhometown.Decidethetimeyouwanttolookat—forexample,now,tenyearsagoandtenyearsfromnow.Researchthepopulationofyourplaceinthoseyears.Writeyournotescarefully.Moduletask:makingagraph13Makeyourgraph.Decidehowyouwanttomakeyourgraph.Drawitandcolourit.Youcanalsomakeitonthecomputer.Labelitclearly.14Writeaparagraphtodescribeyourgraph.ThenPresentyourgraphtotheclass.PairworkBeijingisahugecity.北京是一个大都市。huge在这里表示“大，巨大”。另外表示“大”的还有“big,tall,vast,large,great”等。

⑴说人、动物、树木等有生命的东西，主要用tall不用high例如atallwoman一个高个子妇女

atallhorse一个高大的马Languagepoints⑵说一个不与地面接触的人和物的高时，要用

high，而不用tall。

例如

Heishighupinthetree.

他高高地爬在树上。

Theplaneissohighinthesky.

飞机在空中这么高。⑶指建筑物、山时要tall或high都可以，不过

high的程度比tall高。⑷high可作副词，tall不能。⑸tall的反义词为short,high的反义词为low。e.g.Ourfactoryisabig/largeone.

我们的工厂很大。（1）在表示物体重量、人的身高大或长大了时，只能用big。

e.g.Theboxistoobigtocarry.

这个盒子太大，拿不了。（2）在表示数量时，用large,不用big。

e.g.Alargenumberofpeoplecamefromallpartsofthecountrytoseetheexhibition.

从全国各地来了很多人观看展览。big和large都可表示具体事物形体或面积的大小,往往可以互换但big较口语化。e.g.TherehavebeenmanygreatpresidentsinAmericanhistory.美国历史上有很多伟大的总统。在表示抽象意思时,有也可用big,但great更为正式。e.g.Great/Bigchangeshavetakenplaceinour