Unit 1 Topic 2 Section C 【知识精讲精研】 九年级英语上册课件（仁爱版）

Unit1TheChangingWorldTopic2

Thepopulationindevelopingcountriesisgrowingfaster.SectionC8888888,88888,888888,8888,888,88888,888,888888,888,8888,888,888,88888,888,888,888888,888,888,888Tonguetwister单词关Newwords:1.socialadj.社会的；社交的2.worseadj.更差的，更糟的

adv.更差，更糟3.supplyv.

提供，供应

n.供应量；补给；供应4.sofar

到目前为止5.governmentn.政府，内阁6.takemeasurestodosth.采取措施做某事7.thanksto幸亏，由于Newwords:8.naturaladj.天然的；天生的9.paragraphn.

段；段落10.opportunityn.机会，时机

11.newbornadj.

新生的，初生的12.percentn.百分之......

13.offerv.提供（东西或机会）；主动提出课文关WatchthevideoandanswerthequestionsWhatsocialproblemsdoyouthinkChina’slargepopulationhascaused?1a1.Beforeyoureadthepassage,discussthequestionswithyourpartner.Task1Workalone

Readformaininformation.1aPre-reading1aReadandunderstand.2.Writethetitleofthepassage.1bRead1aandmatchthemainideawitheachparagraph.1._____Paragraph1A.themeasurestodealwiththeproblems2._____Paragraph2B.theworld’sandAsia’spopulation3._____Paragraph3C.theproblemscausedbylargepopulationPopulationProblemsBCA1cRead1aagainandcompletethetable.PopulationofChina____________________Socialproblemless______________fewer_______opportunitiesless_______and______morecrowded________heavier_________SituationnowLivingconditions___________Thenaturalenvironment__________1.36billionjobwaterenergycitiestrafficareimprovingrapidlylivingspaceisbecomingbetterandbetterTask2Classwork

Readfordetails

Paragraph1

In2015,theworld'spopulationwasabout7.2billion.Morethan

fourbillionpeopleliveinAsianow.That'smorethan

halfoftheworld'spopulation.Paragraph1Theworld’sandAsia’spopulation.ReadParagraph1andfillintheblanks.Asiahasapopulationof_________________.That’stosay,morethan_____ofthepeopleintheworldliveinAsianow.morethan4

billionhalfParagraph2

Chinahasthelargestpopulationintheworld,

andaboutonefifthofthepeopleintheworld

liveinChina.Becauseofthelargepopulation,

thereislesslivingspaceforeachfamily.Andit

isdifficultforlotsofpeopletofindjobs.Atthe

sametime,thelargepopulationhascausedmanyotherdifficultiesforthewhole

nation.

Forexample,itishardforChinatosupplywaterandenereytosatisfy

people'sdailyneeds.Mostcitiesaremorecrowdedthanbefore,andthetrafficis

muchheavier.Naturalenvironmentsarebecomingworseandworse.Thelargepopulationhasbeena

seriousproblem.Paragraph2Theproblemscausedbylargepopulation.1.4billion÷7.2billion≈1／5

About

onefifthofthepeopleintheworldliveinChina.onefifth8765432120percent

Readandfindwhatsocialproblemshasitcaused?trytounderlineandnumberthem.1.Becauseofthelargepopulation,thereislesslivingspaceforeachfamily.（改为反义疑问句）Detailsreading

Readandfindwhatsocialproblemshasitcaused?2.Becauseofthelargepopulation,it

isdifficultforlotsofpeopletofindjobs.

Readandfindwhatsocialproblemshasitcaused?3.Becauseofthelargepopulation,itishardforChinatosupplywaterandenergy

tosastifypeople’sdailyneeds.4.Becauseofthelargepopulation,mostcitiesaremorecrowdedthanbefore,andthetrafficismuchheavier.

Readandfindwhatsocialproblemshasitcaused?

Readandfindwhatsocialproblemshasitcaused?5.Becauseofthelargepopulation,naturalenvironmentsarebecomingworseandworse.Retellthesocialproblemsaccordingtothepictures.Paragraph3

Sofar,ourgovernmenthastakenmanymeasurestosolvethepopulationproblem.Onewasknownas

theone-childpolicy.ItworkedwellincontrollingChina’spopulation.Thanksto

thepolicy,Chinaisdevelopingquicklyandpeople’slivingconditionsareimprovingrapidly.However,thepopulationproblemisstillseriousinChina.Westillhavealongwaytogo.Paragraph3Themeasurestodealwiththeproblems.Theone-childpolicy

—Every

couplecanhaveonlyonechild.Sofar,theone-childpolicyhas

workedwellin

controllingChina’spopulation.Westillhavealongwaytogo.Newexercise

Sofar,ourgovernment_____takenmanymeasurestosolvethepopulationproblem.Onewasknown___theone-childpolicy.Itworked_____incontrollingChina’spopulation.Thanks____thepolicy,Chinaisdevelopingquicklyandpeople’slivingconditionsareimprovingrapidly.________,thepopulationproblemisstillseriousinChina.Westillhavealongwaytogo.hasaswelltoHoweverCloseyourbooksandlet’sfindmistakes！ChinahaslargestpopulationwithonefiveofthepeoplelivinginChina.Thereisfewerlivingspaceforeachfamily.Anditisdifficultyforpeopletofindjobs.Atsametime,thelargepopulationhavecausedenergyproblems.Mostcitiesaremorecrowdedthenbefore,andtrafficismoreheavier.Naturalenvironmentsarebecomingmoreandmoreworse.muchthelargestfifthlessdifficultthesamehasthanworseandworse

2Completethefollowingpassagewiththecorrectformsofthegivenwordsorphrases.

growreachhavefindworkbecomefacecarryoutEveryminute,about261babiesarebornintheworld.Thatmeanspeoplehaveto_____foodforabout375940newbornbabieseveryday.Theworld’spopulation_______________fasterandfaster.Ithas_______oneofthebiggestsocialproblemstoday.China______thelargestpopulationintheworld.Thereareabout1.3billionpeopleinChina.Ithas________20percentoftheworld’spopulation.Chinahas____________somepoliciestocontrolthepopulation,andthesepolicieshave_______well.ButChinastill_______aseriouspopulationproblem.findgrows/isgrowingbecomehasreachedcarriedoutworkedfaces3aWorkingroupsandsearchfortheinformationaboutthefollowingquestions.Thenshareyourideawithyourgroupmembers.1.Howdoyouthinkwecangetmorelivingspace?2.Whatshouldthegovernmentdotooffermorejobopportunities?3.Theenergyandwaterislessandless.Whatshouldwedotodealwithit?4.Thetrafficincitiesismuchheavierthanbefore.Howcanwesolvetheproblem?3bWriteashortpassageofthreeparagraphsbasedon3a.Chinahasthelargestpopulationintheworld.Ithascausedmanyproblems.Everyoneshoulddosomethingtosolvethem.First,thegovernmentshouldkeeptheone-childpolicytocontroltheincreasingpopulation,andpracticereformandopening-uptodevelopoureconomy.Onlyinthiswaycanwegetmorejobsandimproveourlivingconditions.Second,theenergyandwaterisbecominglessandless.We’dbettersavethemasmuchaspossible,andtrytofindmorenewenergy.Inordertosolvetheproblemofheavytraffic,wecalloneveryonetotakeabusorwalkasoftenaspossible.语法关keypoints1.(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。one/ahalf

aquarterthreequartersthreeandahalf1.(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及时练习11.—What’sonethirdandahalf,doyouknow?—Yes,it’s________.

A.onefifthB.twofifthsC.sixfifthsD.fivesixths

2.—Whichisthesmallestnumberofthefour?—________.

A.AhalfB.TwothirdsC.AquarterD.Threefourths

3.Whichisthesmallestnumber,ahalf,aquarteror_____________(三分之二).4.Weallknowforty-fiveminutesisthree_____________（刻）.DCtwothirdsquarters2.(1)because与becauseofbecause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及时练习21.____________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.

=

Ourcountrysupplieschildrenwithfreetextbooks.

provide,offer与supply意思相近，但用法不同。比较：providesth.forsb./providesb.withsth.offersth.tosb./offersb.sth.worseandworse

越来越糟糕比较级+and+比较级意为“越来越……”e.g.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.Dtoprotectcontrolling

5.(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及时练习31.YaoMing________________mostyoungpeople.2.He___________________agreatinventor.3.France____________________hisfinefoodandwine.

isfamoustoisfamousasisknownfor6.dealwith与dowith“处理，对付”

howtodealwith“如何处理.......”=whattodowith“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.Cwhatdo由于;多亏同时越来越差到目前为止采取措施做某事作为...而出名在做某事方面起到好的效果给...提供...thankstoatthesametimeworseandworsetakemeasurestodosth.beknown/famousasworkwellindoingsupplysth.tosb./supplysb.withsth.sofar

Choosethebestanswer.

1._____ofthestudentsareboysinourschool.A.Twothird B.Twothrees C.Twothirds D.Secondthree2.Theone-childpolicyhas_____controllingChina’spopulation.

A.beengoodatB.donewellinC.takencareofD.workedwellin3.Edisonisknown_____agreatinventor.

A.forB.asC.inD.on4._____yourhelp,Imadegreatprogressinmath.

A.ThanksforB.Thanksto C.ThankD.Thankfor

CDBB5.—Haveyoufoundyourlostbook_____?—No,Ihaven’t.

A.already B.yet C.stillD.once6.Ourgovernmentshould