Module9Unit3課件八年級(jí)英語(yǔ)上冊(cè)

Unit3LanguageinuseModule9PopulationRevisethenewwordsRevisionnoise,prepare,report,billion,huge,increase,notes,cause,problem,grow,birth,flat,rubbish,quiet,local,mention,pollution,solve,public,service,pupil,reduce,createWorkinpairs.Matchthecountrieswiththeirpopulationsin2020.1.Chinaa)5,084,0002.theUSb)25,690,0003.Australiac)331,698,0004.NewZealandd)1,411,780,000

RevisionReadyouranswerstoActivity1tothewholeclass.Chinahasapopulationof...RevisionNowlistenandcheck.one1two2three3four4five5six6seven7eight8nine9ten10eleven11twelve12thirteen13fourteen14fifteen15sixteen16seventeen17eighteen18nineteen191-19的基數(shù)詞Grammar基數(shù)詞twenty20thirty30forty40fifty50sixty60seventy70eighty80ninety90twenty-one21twenty-two22………………其它的十位數(shù)照此類推，如：thirty-one31forty-two42seventy-five75ninety-six9620—90等十位數(shù)百、千、萬(wàn)百hundred

100onehundred200twohundred

以此類推······千thousand1000onethousand2000twothousand英語(yǔ)里沒(méi)有“萬(wàn)”這一單位，萬(wàn)也用thousand表示。如：10000tenthousand一萬(wàn)20000twentythousand兩萬(wàn)4、十萬(wàn)、百萬(wàn)十萬(wàn)的說(shuō)法是：100,000a(one)hundredthousand200,000twohundredthousandmillion百萬(wàn)

a(one)million1000000twomillion2000000········以此類推······8000000eightmillion在英語(yǔ)中，對(duì)于萬(wàn)以上的數(shù)字，我們改如何表達(dá)呢？這就要記住英語(yǔ)數(shù)字讀法特點(diǎn)。以下面一個(gè)數(shù)字為例：6，500，431，729hundredthousandmillionbillion注意每三個(gè)數(shù)為一個(gè)單位，按照百、十、個(gè)向下讀。大數(shù)字的表達(dá)方法英語(yǔ)分?jǐn)?shù)的表示法：

用“基數(shù)詞＋序數(shù)詞”表示，其中基數(shù)詞表示分子，序數(shù)詞表示分母。分子除用one外，也可用a；如果分子大于1，分母要用復(fù)數(shù)形式。Twothirdsofthestudentshavepassedtheexam.

三分之二的學(xué)生考試及格了。注意：1／2不能說(shuō)a（one）second，而要說(shuō)a（one）half。

1／4和3／4可以說(shuō)a（one）fourth和threefourths，但常用aquarter和threequarters表示。

若它們?cè)诰渥又凶髦髡Z(yǔ)，則謂語(yǔ)動(dòng)詞是用單數(shù)還是復(fù)數(shù)取決于名詞，即與分?jǐn)?shù)所修飾的名詞保持一致。Abouttwothirdsofthestudentsattendthemeeting．大約2／3的學(xué)生都參加了會(huì)議。

Readthechartandanswerthequestions.Grammar1.Whichcityhadthelargestpopulationin2018?2.Whichcity’spopulationwillincreasethemostfrom2018to2030?3.Whichcitywillhavealargerincreaseinitspopulation,MumbaiorCairo?4.Whichcity/citiesdoyouthinkwillhavethebiggestpopulationproblem?Why?MexicoCityhadthelargestpopulationin2018.Dhakawillincreasethemostfrom2018to2030.Cairowillhavealargerincreaseinitspopulation.IthinkDhakawillhavethebiggestpopulationproblem,becauseitspopulationwillincreasethefastest.

冠詞是一種虛詞，沒(méi)有詞義，沒(méi)有數(shù)和格的變化，不能單獨(dú)使用，只能幫助名詞或起名詞作用的其他詞類說(shuō)明其意義。冠詞有三種形式：不定冠詞a(n),定冠詞the和零冠詞。定冠詞特指某一特定名詞，不定冠詞泛指一般普通名詞。零冠詞是指名詞前面沒(méi)有不定冠詞(a/an)、定冠詞(the)，也沒(méi)有其他限定詞的現(xiàn)象。冠詞的用法冠詞的分類種類形式意義例詞不定冠詞a/an只能用在可數(shù)名詞前,表示“一”的意思.a用在以輔音音素開(kāi)頭的單詞前;而an用在以元音音素開(kāi)頭的單詞前．a(chǎn)deskanhourahorseaneggahand定冠詞the表示某一類或某個(gè)特指的人或物，可與名詞的單,復(fù)數(shù)連用．themapthemantheearth一、不定冠詞的用法。1.首次提到某人,不定冠詞起介紹作用。

I’mpreparingsomenotesforareport.

我正在為一個(gè)報(bào)告準(zhǔn)備筆記。2.表示“每一”的概念，相當(dāng)于every。Igotothecinemaonceamonth.

我一個(gè)月去看一次電影。3.某些固定短語(yǔ)中，要用不定冠詞。haveagoodtime,inahurry,haveabreak二、定冠詞的用法。1.指前面提到過(guò)的人或物，或特指某人或某物。Ihaveadog.Thedogisbrown.2.指談話雙方都知道的人或物。Ihadtowritethesamereportlastterm!3.用于序數(shù)詞以及形容詞的最高級(jí)之前。Hewenttothefirstfloor.4.用于世界上獨(dú)一無(wú)二的事物。Thesunisshiningbrightly.5.在江河、海洋、山脈等地理名詞前及由普通名詞構(gòu)成的專有名詞前。theGreatWallofChina6.用于表示方位名詞前。GuangdongisinthesouthofChina.7.用在彈奏樂(lè)器中。Theboyisplayingthepiano.8.在某些形容詞前加定冠詞，表示一類人或物。Theoldaredancingontheplayground.9.在姓氏復(fù)數(shù)形式之前,表示“一家人”或“夫婦兩人”。TheBrownsarereallyalargefamily.10.用于某些固定短語(yǔ)中。bytheway三、零冠詞。1.在球類活動(dòng)、學(xué)科名稱前，以及節(jié)日、月份、星期前不用冠詞。1stJuneisChildren’sDay.2.名詞前已有指示代詞、物主代詞、不定代詞或數(shù)詞等作定語(yǔ)的名詞前不用冠詞。Ihaveseveralquestionstoask.3.在某些固定詞組和習(xí)慣用語(yǔ)中不用冠詞。bybusatnightintroubleMinais(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.Completethepassagewitha,anorthewherenecessary.anaGrammarathetheaaaa/1.WebelievetheschoolsinArnwickareverygood,andweareworkingtomakethemeven

________.2.Theirflatistoolargefortwopeople.Theywanttofinda________one.3.Annaalwaystalksaboutherideas.Ithinksheneedstolisten________.4.Therearealotofparksinthiscity.Ithinkthereare________parksinalotofothercities.Completethesentenceswiththecorrectformofthewordsinthebox.bettersmallermorefewerVocabularyfew

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smallCompletethediagram.Usethewordsintheboxtohelpyou.aircityflatpublicserviceschooltrafficVocabularyProblemsReasonsSolutions●PeoplefromParkvillelivein______________________________________.●It__________________togotoschoolbybus.●____________________.●_______________________________________.●________________________________________.●________________________________________________________________________________.●____________________.●Thegovernmentismakingagreateffortto_______________________________________.◎____________________________________________________________.◎________________________________________.FromParkvilletoArnwick:problemsandsolutionsflatsoutsidethecentreofArnwicktakesanhourThereisairpollutionPeoplemovedtothecitytofindjobsItwasexpensivetoliveinthecitycentreParkvillebecamepartofArnwick,andthepopulationofArnwickbecameevenlargerThetrafficisbadsolveArnwick’sproblemswithbetterpublicservicesTherewillbemoreschools,sopupilswon’tneedtotravelfarThegovernmentisreducingairpollutionfromtrafficOurworldisfacingmanyproblems.Twoofthebiggestareincreasingpopulationandpollution.The(1)__________oftheworldisincreasingquickly.Manypeopleareleavingthe(2)__________toworkinthecities,butthereisnotenough(3)_______forsomanypeople.Anotherhugeproblemfortheworldis(4)_________.Thereissomuch(5)________ontheroadsthatinsomecitiestheairisheavilypolluted.Weshouldworkhardertoprotectourworld.Completethepassagewiththewordsinthebox.populationcountrysidespacepollutionVocabularycountrysidepollutionpopulationspacetraffictraffic1.Growingpopulationisaproblem__________________.2.Thepopulationoftheworldmaygrowmoreslowly______________.3.Thesupermarket_____________whenabiggeroneopenedinthetown.4.Usually__________anhourtogettherebybus.5.Thetownhadalotofpollutioninthepastbutitis_____aproblem________.Completethesentenceswiththeexpressionsinthebox.alloverthe