TheWorldIsaBigPlaceUnit7KnowOurWorld

Howmanycontinentsarethereintheworld?Whatarethey?Whatdoyouknowabouttheplacewhereyoulive?ThinkAboutItplanetn.行星

billionn.十億；千兆

totaln.總計(jì)；總數(shù)

adj.總的；總計(jì)的

increasev.增加；增大

Indianadj.印度的n.印度人

Atlanticn.&adj.大西洋（的）Arcticadj.北極的Learnsomenewwords.1.Whatistheproblemtheearthfaces?2.Peoplecanliveonthesevencontinents.()(判斷正誤)3.Howmuchoftheworldiscoveredwithland?4.Whatislargestpartoftheocean?Thepopulationisincreasingveryquickly.FOnethird.ThePacificOcean.Listentothepassageandthenanswerthequestions.Let’sDoIt!Readthelessonandmatcheachparagraphwithitsmainidea.Paragraph1a.Sixofthesevencontinentsaregoodforpeopletoliveon.Paragraph2b.Weshouldtreattheearthwell.Paragraph3c.Anincreasingpopulationisabigproblemfortheearth.Paragraph4d.Twothirdsoftheearthiscoveredwithoceans.Paragraph5e.Peoplecannotliveeverywhereontheearth.Fillintheblankswiththecorrectformsofthewordsinthebox.increasedrysurfacebilliontotal1.Thenumberofswimmershereis_________quicklybecauseit’sveryhotthesedays.2.Theschoolhasa______of900students.3.Ithinkitmaybethe_____seasonoftheyear.4.The______ofourbodyisskin.Itprotectsus.5.Howmany______ofpeoplearethereintheworldnow?increasingtotaldriestsurfacebillionsMatchthesevencontinentswiththeircorrectdescriptions....,theworld’spopulationwasover7billionintotal.世界上人口總計(jì)已超過70億。(1)population意為“人口”，常被看作是一個整體，一般不加s。作主語時，謂語動詞要用單數(shù)形式。如：ThepopulationofGermanyisabout81,000,000.德國大約有八千一百萬人口。Languagepoints.(2)表示“……的人口”可用“thepopulationof+地名”，也可用“thepopulationin+地名”，作主語中心詞時，謂語動詞用單數(shù)形式。如：ThepopulationofCanadaisabout30,000,000.加拿大的人口是三千萬。表示某國、某城市有多少人口時，還可用...hasapopulationof...結(jié)構(gòu)。如：Thecityhasapopulationof30,000.那座城市有三萬人口。I.根據(jù)首字母或漢語提示，完成單詞。1.ThebiggestoceanintheworldistheP_______Ocean.2.Almosteveryoneknowsthee_____goesaroundthesun.3.Desertsmaycoverthree_________(百分比)oftheearth’ssurface.4.Thepopulationoftheworldis__________(增長)quickly.5.Hainanisthesecond-largest_________(島嶼)inChina.6.Afterhalfamonthatsea,wesaw____(陸地).landacificarthpercentincreasingislandExerciseII.用適當(dāng)?shù)慕樵~填空。1._____2025,theworldwillhave7.8billionpeople.2.Milkisgood_________children.3.TheNileRiveristhelongestriver_________Africa.4.Whichpart_________theworlddoyoulivein?5._________thesurfaceoftheearth,thereissomedryland.OnByforinofIII.連詞成句。1.there,the,many,are,how,world,in,people___________________________________?2.different,made,is,the,of,world,up,many,places,of,kinds_____________________________________________.3.the,in,is,girl,to,he,red,pointing___________________________________.4.driest,the,continent,is,world’s,Antar-ctica___________________________________.5.good,all,the,singing,not,are,children,at___________________________________.NotallthechildrenaregoodatsingingHowmanypeoplearethereintheworldTheworldismadeupofmanydifferentkindsofplacesHeispointingtothegirlinredAntarcticaistheworld'sdriestcontinentHomework1.Sharewithyourpartneraboutwhatyoufeel

afterlearning.2.Finishtheexercise.3.Dscribeoneplanetyouareinterestedinin

yourexercisebook.ThankYouTheWorldIsaBigPlaceUnit7

KnowOurWorld

單詞闖關(guān)1.行星________2.十億；千兆________3.n．總計(jì)；總數(shù)adj.總的；總計(jì)的________4.增加；增大________→________(反義詞)5.表面；表層________billionplanet

Lesson38

TheWorldIsaBigPlace課前自主預(yù)習(xí)totalincrease decreasesurface單詞闖關(guān)6.adj.印度的n．印度人________→________(n.印度)7.Atlantic________8.Arctic________大西洋(的)Indian IndiaLesson38

TheWorldIsaBigPlace北極的短語互譯1.ontheearth____________2.allyearround____________3.thenumberof…____________4.總計(jì)；合計(jì)；總共____________5.被……覆蓋____________6.三分之二____________在地球上.……的數(shù)量全年intotalbecoveredwith…twothirdsLesson38

TheWorldIsaBigPlace句型在線1.并且截止到2050年，世界人口可能將達(dá)到90億。And________2050,theworld'spopulation________________9billion.2.這些干旱的地方被稱作沙漠。Thesedryplaces________________deserts.by may reach

are calledLesson38

TheWorldIsaBigPlace句型在線3.在那些地方生存很不容易。________________noteasy________________________thoseplaces.4.為了我們的孩子，也為了我們孩子的孩子，一定要好好地對待它！Itmust________________wellforourchildrenandforourchildren'schildren,too！It is to live in

be treatedLesson38

TheWorldIsaBigPlace

詞匯點(diǎn)睛

課堂互動探究●increasev.增加；增大[觀察]

Itisincreasingveryquickly.它(世界人口)正在非常迅速地增長。Readingcanincreaseyourknowledge.閱讀可以增長你的知識。[探究]

increase意為“增加，增大”，可用作及物動詞，也可用作不及物動詞。用作及物動詞時，常接名詞作________。賓語Lesson38

TheWorldIsaBigPlace活學(xué)活用

根據(jù)漢語意思完成句子人口正在非常迅速地增長。Thepopulationis________veryquickly.increasingLesson38

TheWorldIsaBigPlace●1

Andby2050,theworld'spopulationmayreach9billion.并且截止到2050年，世界人口可能將達(dá)到90億。[探究]

(1)“by＋時間”表示“到……為止；不遲于……”。根據(jù)不同的時間，使用不同的________。(2)billion意為“十億”，前面有________數(shù)字時，用單數(shù)形式；后面加________表示概數(shù)時，用________形式。例如：twobillion20億billionsof數(shù)十億句型透視時態(tài)具體of復(fù)數(shù)Lesson38

TheWorldIsaBigPlace

[拓展]與billion用法相同的詞還有hundred(百),thousand(千),million(百萬)。Lesson38

TheWorldIsaBigPlace活學(xué)活用

1．2017·濰坊—“FoodSafety”hasbecomeoneofthehottesttopicsrecently.—Yeah,itreceives________Internethitsaday.A．thousands

B．thousandsof

C．thousand

D．hundredsBLesson38

TheWorldIsaBigPlace●2

Wecan'tliveinwater,andonlyaboutonethirdofourplanetisland.我們不能居住在水里，而我們的星球只有三分之一的面積是陸地。[探究]

onethirdofourplanet意為“我們星球的三分之一”，onethird表示分?jǐn)?shù)1/3。英語中的分?jǐn)?shù)用數(shù)詞來表示：分子用基數(shù)詞，分母用序數(shù)詞。如果分子大于1，則分母用復(fù)數(shù)形式。分子和分母中間可加連詞符，也可不加。表示“一半”時，常用half。例如：2/7twosevenths(two--sevenths)

1/2onehalf句型透視Lesson38

TheWorldIsaBigPlace

[拓展]

分?jǐn)?shù)修飾名詞作主語時，謂語動詞的單復(fù)數(shù)要根據(jù)分?jǐn)?shù)所修飾的名詞的單復(fù)數(shù)來定。Threefourthsofthemoneyhasbeenspentonbooks.四分之三的錢用來買書了。Twothirdsofthestudentsinmyclassareboys.我們班里三分之二的學(xué)生是男孩。Lesson38

TheWorldIsaBigPlace活學(xué)活用

2．2017·宿遷—Mum,________ofmyclassmates________glasses.—Oh,myGod.Youneedtoprotectyoureyeswell.A．three--fourths;wearsB．three--fourth;wearC．three--fourth;wearsD．three--fourths;wearDLesson38

TheWorldIsaBigPlace

【解析】在英語中，分?jǐn)?shù)的分子用基數(shù)詞，分母用序數(shù)詞；如果分子大于1，則分母用復(fù)數(shù)形式。3/4即three--fourths，排除選項(xiàng)B、C。此句的主語是myclassmates，謂語動詞要用復(fù)