Unit1Topic2SectionC九年级英语上册课件

九上Unit1TheChangingWorldTopic2

Thepopulationindevelopingcountriesisgrowingfaster.SectionCI、Masterthenewwordsandphrases：social,supply,natural,worse,government,paragraph,opportunity,newborn,percent,offer;halfof,onefifth,becauseof,satisfypeople’sdailyneeds,sofar,thanksto...II、ReadthefractionsinEnglish.III、Beabletotalkaboutpopulationproblems.Learningaims:8888888,88888,888888,8888,888,88888,888,888888,888,8888,888,888,88888,888,888,888888,888,888,888TonguetwisterReviewPre-readingCanChina’slargepopulationbringmanybigadvantages?WarmupNewwords&expressionsChina’slargepopulationcanbringbigadvantages,suchasbecomingoneoftheworld’sbiggesteconomies,buildingthelargesteducationsystemintheworld.WhatsocialproblemsChina’slargepopulationcaused?Butlargepopulationhasalsobroughtsomesocialproblems.About20percentofthepeopleintheworldliveinChina.Therewaslesslivingspaceforeachfamilybecauseofthelargepopulation./'səʊʃl/

adj.社会的；社交的/pə'sent/

n.百分之.......becauseof

+名词“因为......”

Whatwas

worse,findingjobswasdifficultforlotsofpeople.ItwashardforChinatosupply

waterandenergytosatisfypeople’sdailyneeds./wɜ:s/

adj./adv.更差(的)，更糟(的)/sə'plaɪ/

v.提供，供应n.

供应量；补给；供应whatwasworse

更糟的是供水供电满足人们的日常需要

Sofar,ourgovernmenthastakenmanymeasurestosolvetheproblem.Thankstotheeffortofourgovernment,Chinaisdevelopingquickly.Andthenaturalenvironmentisbecomingbetterandbetter.现在sofar到目前为止/'ɡʌvənmənt/

n.政府，内阁takemeasurestodosth.采取措施做某事thanksto幸亏，由于/'nætʃrəl/

adj.天然的；天生的Therearemorethan50thousandnewbornbabieseverydayinChina.Thegovernmentwilloffermorejobopportunintiesinthefuture./'nju:bɔ:n/adj.新生的，初生的/'ɔ:fə/v.提供；主动提出/,ɒpə'tju:nəti/n.机会，时机While-reading

___________________________

In2014,theworld'spopulationwasabout7.2billion.MorethanfourbillionpeopleliveinAsianow.That'smorethanhalfoftheworld'spopulation.

Chinahasaverylargestpopulation,andaboutonefifthofthepeopleintheworldliveinChina.Becauseofthelargepopulation,therewaslesslivingspaceforeachfamily.Andwhatwasworse,itwasdifficultforlotsofpeopletofindjobs.Atthesametime,thelargepopulationcausedmanyotherdifficultiesforthewholenation.Forexample,itwashardforChinatosupplywaterandenergytosatisfypeople'sdailyneeds.Manycitiesaremorecrowdedandthetrafficismuchheavier,too.Thelargepopulationhasbeenaseriousproblem.

Sofar,ourgovernmenthastakenmanymeasurestosolvetheproblem.Andtheyworkedwell.Thankstotheeffortsofourgovernment,Chinaisdevelopingquicklyandpeople’slivingconditionsareimprovingrapidly.Thenaturalenvironmentisbecomingbetterandbetter.However,

westillhavealongwaytogo.Read1aandmatchthemainideawitheachparagragh.Thenwritethetitleofthepassage.1._____Paragraph1A.thebettersituationinChinanow2._____Paragraph2B.theworld’sandAsia’spopulation3._____Paragraph3C.theproblemscausedbylargepopulationSkimming1b

BCAPopulationProblems/'pærəɡrɑ:f/n.段；段落PopulationofChina____________________Socialproblemless______________fewer_______opportunitiesless_______and_______morecrowded________heavier_________SituationnowLivingconditions______________________Thenaturalenvironment__________1.36billionjobwaterenergycitiestrafficareimprovingrapidlylivingspaceisbecomingbetterandbetter1c

Read1aagainandcompletethetable.Scanning

PopulationProblems

In2014,theworld'spopulationwasabout7.2billion.MorethanfourbillionpeopleliveinAsianow.That'smorethanhalfoftheworld'spopulation.

Finishthefollowingtaskandreadparagragh1.1.Whatwasthepopulationoftheworldin2014?;2.HowlargeisthepopulationofAsianow?Isthatmorethanhalfoftheworld’spopulation?Carefulreading提示：点击文本框可听录音。Itwasabout7.2billion.Morethan4billion.Yes,itis.

Chinahasaverylargestpopulation,andaboutonefifthofthepeopleintheworldliveinChina.Becauseofthelargepopulation,therewaslesslivingspaceforeachfamily.Andwhatwasworse,itwasdifficultforlotsofpeopletofindjobs.Atthesametime,thelargepopulationcausedmanyotherdifficultiesforthewholenation.Forexample,itwashardforChinatosupplywaterandenergytosatisfypeople'sdailyneeds.Manycitiesaremorecrowdedandthetrafficismuchheavier,too.Thelargepopulationhasbeenaseriousproblem.

Listthesocialproblemsandreadparagragh2.提示：点击文本框可听录音。Becauseofthelargepopulation1.Therewaslesslivingspaceforeachfamily.2.Itwasdifficultforlotsofpeopletofindjobs.3.itwashardforChinatosupplywaterandenergytosatisfypeople'sdailyneeds.4.Manycitiesaremorecrowdedandthetrafficismuchheavier,too.1.4billion÷7.2billion≈1／5

About

onefifthofthepeopleintheworldlive

inChina.onefifth20percent3billion÷6.8billion≈1／2

half50percent(50%)AlmosthalfofthepeopleintheworldliveinAsia.

Sofar,ourgovernmenthastakenmanymeasurestosolvetheproblem.Andtheyworkedwell.Thankstotheeffortsofourgovernment,Chinaisdevelopingquicklyandpeople’slivingconditionsareimprovingrapidly.Thenaturalenvironmentisbecomingbetterandbetter.However,

westillhavealongwaytogo.Finishthefollowingtaskandreadparagragh3.Whichchangesaretherewiththeeffortsofourgovernment?提示：点击文本框可听录音。Thanktotheeffortsofourgovernment,1.Chinaisdevelopingquickly.2.People’slivingconditionsareimprovingrapidly.3.Thenaturalenvironmentisbecomingbetterandbetter.WatchandfollowTrytoretell1aaccordingtothepicturesandtheinformation.Asiahasapopulationof___________4billion.That’stosay,morethan_____ofthepeopleintheworldliveinAsianow.morethanhalf____________thelargepopulation,thereisless___________foreachfamily.BecauseoflivingspaceTrytoretell1aaccordingtothepicturesandtheinformation.

Becauseofthelargepopulation,_____isdifficultforlotsofpeople________jobs.tofinditBecauseofthelargepopulation,_____ishardforChina__________waterandenergytosastifypeople’sdailyneeds.ittosupplyTrytoretell1aaccordingtothepicturesandtheinformation.Becauseofthelargepopulation,mostcitiesare_______crowdedthanbefore,andthetrafficis________heavier.muchmoreSofar,ourgovernment____________manymeasurestosolvetheproblem.Andtheyworked______.__________theeffortsofourgovernment.Chinaisdevelopingquicklyandpeople’s______________areimprovingrapidly.Thenaturalenvironmentisbecoing_______________.However,westillhavealongwaytogo.Trytoretell1aaccordingtothepicturesandtheinformation.hastakenwellThankstolivingconditionsbetterandbetterCloseyourbooksandlet’sfindmistakes！ChinahasthelargestpopulationwithonefiveofthepeoplelivinginChina.Thereisfewerlivingspaceforeachfamily.Anditisdifficultyforpeopletofindjobs.Atthesametime,thelargepopulationhavecausedenergyproblems.Mostcitiesaremorecrowdedthanbefore,andtrafficismoreheavier.Naturalenvironmentsarebecomingmoreandmorebetter.1.______2._______3._______4._______5._______6._______fifthlessdifficulthasmuchbetterandbetterCompletethefollowingpassagewiththecorrectformsofthegivenwordsorphrases.

growreachhavefindworkbecomefacecarryoutEveryminute,about261babiesarebornintheworld.Thatmeanspeoplehaveto_____foodforabout375840newbornbabieseveryday.Theworld’spopulation_______________veryfast.Ithas_______oneofthebiggestsocialproblemstoday.China______thelargestpopulationintheworld.Thereareabout1.36billionpeopleinChina.Ithas________20percentoftheworld’spopulation.Chinahas____________somepoliciestosolvethepopulationproblem,andthesepolicieshave_______well.ButChinastill_______aseriouspopulationproblem.findgrows/isgrowingbecomehasreachedcarriedoutworkedfaces2

Workingroupsandsearchfortheinformationaboutthefollowingquestions.Thenshareyourideawithyourgroupmembers.1.Howdoyouthinkwecangetmorelivingspace?2.Whatshouldthegovernmentdotooffermorejobopportunities?3.Waterandenergyarelessandless.

Whatshouldwedotodealwithit?4.Thetrafficincitiesismuchheavierthanbefore.Howcanwesolvetheproblem?3a

Writeashortpassageofthreeparagraphsbasedon3a.Chinahasthelargestpopulationintheworld.Ithascausedmanyproblems.Everyoneshoulddosomethingtosolvethem.First,thegovernmentshouldkeepsomeusefulpoliciestocontroltheincreasingpopulation,andpracticereformandopening-uptodevelopoureconomy.Onlyinthiswaycanwegetmorejobsandimproveourlivingconditions.Second,theenergyandwaterisbecominglessandless.We’dbettersavethemasmuchaspossible,andtrytofindmorenewenergy.Inordertosolvetheproblemofheavytraffic,wecalloneveryonetotakeabusorwalkasoftenaspossible.3b

Post-reading1.社会问题___________________2.......的一半

_______________3.整个国家

___________________4.供水供电_________________________5.自然环境______________________6.到目前为止

___________7.幸亏，由于

_______________8.处理，解决

_____________Findthephrases.socialproblemhalfof...thewholenationsupplywaterandenergynaturalenvironmentsofarthankstodealwith1.(1)分数的表达onesixthoneninthonetwentiethfivesixthstwoninthsseventwentieths

英语中分数表示法为：分子用基数词;分母用序数词,且有单/复数形式。当分子大于1时，分母要用复数形式。Keypointsone/a

half

a

quarterthreequarters

three

and

ahalf1.(2)分数的用法

当“分数（或百分比）of+名词/代词”做主语时，谓语动词根据of后面的名词或代词来决定单复数形式。eg.Morethanthree-fifthsofthestudents

_______________(fail)topasstheexam.

超过五分之三的学生未能通过考试。

Onlyhalfofmymoney_________________(go).

只有一半的钱不在了。havefailedhasgone闯关练习：1.—What’sonethirdandahalf,doyouknow?—Yes,it’s________.

A.onefifthB.twofifthsC.sixfifthsD.fivesixths2.—Whichisthesmallestnumberofthefour?—________.

A.AhalfB.TwothirdsC.AquarterD.Threefourths

3.Whichisthesmallestnumber,ahalf,aquarteror_____________(三分之二).4.Weallknowforty-fiveminutesisthree_____________（刻）.DCtwothirdsquarters2.(1)because与becauseof

because

是连词，+句子（常回答以why开头的问句）。

becauseof

是复合介词，+名词/代词/v.-ing.eg.Wedidn’tgotothezoo___________theheavyrainlastSunday.Wedidn’tgotothezoo___________itrainedlastSunday.(2)thanksto与thanksfor（to和for都是介词）thanksto“多亏了/由于”.指因为......而产生好的结果。

thanksfor“因（做）某事而感谢某人”（只表达感谢，不补充结果）。eg._____________thepoliceman,Lilyfoundherlostsisteratlast._____________yourhelp.=________________helpingme.

becauseofbecauseThankstoThanksforThanksfor闯关练习:1.____________Johnisill,heisabsenttoday.

2._____________yourhelp,Ifinishedthetaskontime.3.Hecan’tcome_______________theheavyrain.4.______________listeningtomyproblemsandgivingmeyouradvice,Mr.Black.BecauseThankstobecauseofThanksfor3.all

与

whole

all+冠词（限定词）+名词冠词（限定词）+whole+名词eg.allthelife=thewholelifeallmylife=mywholelifeallthemorning=thewholemorningawholeroastduck练习：

allmybooks=___________booksallthecountry=____________countryWehavetogotoschoolfora________weekaftertheholiday!A.wholeB.allC.myD.thismywholethewholeA4.supply

n.

供应量，供给量，储备e.g.Thewatersupplyisnotenough.水的供给不足。

v.（尤其大量）供应，供给，提供，常用句型：supplysth.tosb./supplysb.withsth.eg.Ourcountrysuppliesfreetextbookstochildren.

=

Ourcountrysupplieschildrenwith

freetextbooks.

provide,offer与supply意思相近，但用法不同。比较：providesth.forsb.

/

provide

sb.

withsth.

offer

sth.

to

sb.

/

offersb.sth.worseandworse

越来越糟糕比较级+and+比较级意为“越来越……”eg.Theweatherisgettingcolderandcolder.天气变得越来越冷了。Ourschoolisbecomingmoreandmorebeautiful.5.(1)sofar

现在完成时的标志。eg.Halfofthesheeponthefarm_______sofar.A.hasdiedB.havebeendiedC.diedD.havedied(2)takemeasurestodosth.采取措施做某事eg.Chinesegovernmentmusttakemeasures__________(protect)theenvironment.(3）workwellin(doing)sth.

在某方面成效显著。eg.Thisnewkindofmedicineworkswellin___________(control)thebirdflu.Dtoprotectcontrolling5.(4)

beknown/famous

as+身份，地位，职业

（作为......而出名）

beknown/famous

for+特点，特长

（因为......而出名）

beknown/famous

to

+某人（被......熟知）eg.

Guilinisknown_______itsbeautifulmountainsandrivers.ChairmanMaoisfamous_______everyChinese.XueZhiqianisknown______asinger.Kunmingisknown________itsenjoyableweather______“SpringCity”.

A.as;forB.to;asC.for;toD.for;asfortoasD闯关练习：1.YaoMing________________mostyoungpeople.2.He___________________agreatinventor.3.France__________________hisfinefoodandwine.

isfamoustoisfamousasisknownfor6.dealwith

与

dowith

“处理，对付”

how

to

deal

with

“如何处理.......”

=

what

to

dowith

“如何处理.......”eg.1.Idon’tknow_______.A.howtheydowiththeproblemB.whatdotheydowiththeproblemC.howtheywilldealwiththeproblemD.whattheywilldealwith

2.Idon’tknowhowtodealwiththeseproblems.（改为同义句）Idon’tkonw_______to______withtheseproblems.CwhatdoExercisesI.用所给词汇的适当形式或根据汉语提示填空。1.Thetrafficisgettingmuch________(heavy)thanbeforeinourcity.2.Sofar,Chinesegovernmenthasofferedlotsofchances__________(help)thehomelesspeoplereturntonormallife.3.Chongqingis________(know)asaMountainCity.4.Thepolicyhasworkedwellin__________(stop)drivingafterdrinking.5.Do