冀教 八下 英語 Unit 7《Lesson 38 The World Is a Big Place》課件

Lesson38

TheWorldIsaBigPlaceUnit7

KnowOurWorld

同學(xué)們,上一課學(xué)習(xí)的單詞、短語和句型你們都掌握了嗎？現(xiàn)在大家來檢驗(yàn)一下,點(diǎn)擊下面的音頻開始聽寫吧！Allofushavestudiedgeography.Canyousaythenamesofthecontinentsandoceansintheworld?THINKABOUTIT·Howmanycontinentsarethereintheworld?Whatarethey?·Whatdoyouknowabouttheplacewhereyoulive?Howmanycontinentsandoceansdoestheworldhave?Canyoupointthemout?Theearthisaveryspecialplanet,anditfacesabigproblem.①

Intheyear2010,theworld’spopulationwasover7billionintotal.②

Itisincreasingveryquickly.③

By2025,theworldmayhaveabout8billionpeople.Andby2050,theworld’spopulationmayreach9billion.溫馨提示:此符號(hào)表示“考點(diǎn)精講”鏈接。Thereisanotherproblem.Peoplecan’tliveeverywhereontheearth.Wecan’tliveinwater,andonlyaboutonethird

ofourplanetisland.④

Butpartsofthislandareverydry.Thesedryplacesarecalleddeserts.Someareashaveveryhighmountains.Othershavealotofsnowandice.Itisnoteasytoliveinthoseplaces.Therearesevencontinents:Asia,Africa,Australia,Antarctica,Europe,NorthAmericaandSouthAmerica.Antarcticaiscoveredwithsnowandiceallyearround.⑤

Luckily,peoplecanliveontheothersixcontinents.Onthesecontinents,therearegreenforests,freshwaterandrichlands.Oceanscovertwothirdsoftheearth'ssurface.Theearthhasonlyonebigocean,butweusethesenamesforitsdifferentparts:thePacificOcean,theIndianOcean,theAtlanticOceanandtheArcticOcean.ThePacificOceanisthelargestone.Theearthisourhomenow,anditwillbeourhomeinthefuture.Itmustbetreatedwellforourchildrenandforourchildren’schildren,too!⑥1)Readthelessonandmatcheachparagraphwithitsmainidea.Paragraph1

a.Sixofthesevencontinentsaregoodforpeopletoliveon.Paragraph2b.Weshouldtreattheearthwell.Paragraph3c.Anincreasingpopulationisabigproblemfortheearth.Paragraph4d.Twothirdsoftheearthiscoveredwithoceans.Paragraph5e.Peoplecannotliveeverywhereontheearth.2)Fillintheblankswiththecorrectformsofthewordsinthebox.increasedrysurfacebilliontotal1.Thenumberofswimmershereis__________quicklybecauseit’sveryhotthesedays.2.Theschoolhasa________of900students.3.Ithinkitmaybethe________seasonoftheyear.4.The________ofourbodyisskin.Itprotectsus.5.Howmany________ofpeoplearethereintheworldnow?increasingtotal

driestsurfacebillions3)Matchthesevencontinentswiththeircorrectdescriptions.Itisthebiggestcontinent.IthasthehighestpointontheearthintheHimalayas.EuropeSouthAmerica

Asia

AfricaAustraliaAntarcticaNorthAmericaItisthesmallestcontinent.Youcanfindkoalasandkangaroosthere.Itisthesixthlargestcontinent.Itisagoodplaceforpeopletotravelto.Itisthefifthlargestcontinent.TheSouthPoleisonthiscontinent.Itisthefourthlargestcontinent.Thereare13countriesonthiscontinent.Itisthethirdlargestcontinent.Canada,MexicoandtheU.S.arethethreemajorcountriesonthiscontinent.Itisthesecondlargestcontinent.Manyelephants,giraffes,zebrasandlionslivethere.①Theearthisaveryspecialplanet,anditfacesabigproblem.planet/pl?n?t/n.(alargeroundobjectinspacethatmovesaroundastar)行星e.g.Theearthistheonlyplanetthatweknowhaslifeatpresent.地球是目前我們所知的唯一有生命存在的行星。考點(diǎn)1planet為可數(shù)名詞，指環(huán)繞恒星運(yùn)轉(zhuǎn)的星球。返回溫馨提示：可返回原文②Intheyear2010,theworld’spopulationwasover7billionintotal.billion/b?l??n/n.十億;千兆e.g.Wewanttwobillion.我們想要20億。Therearebillionsofstarsinthesky.天上有數(shù)十億的星星。Hundredsofpeoplewerekilledintheearthquake.地震中有數(shù)百人喪生。Thereareaboutfivehundredstudentsinthisschool.這所學(xué)校大約有500名學(xué)生?？键c(diǎn)2與billion用法類似的詞有hundred，thousand，million。billion前有數(shù)詞修飾時(shí)，billion不能用復(fù)數(shù)形式。billionsof意為“數(shù)十億的”，表示不確定的數(shù)量。中考在線1:Weallknowthat________birdsflytoDongtingLakeinwinter.[益陽]A.millionB.millionsC.millionsofC【】句意為“我們都知道在冬季數(shù)百萬的鳥飛往洞庭湖”。millionsof…意為“數(shù)百萬的……”。total/t??tl/n.總計(jì);總數(shù)adj.總的;總計(jì)的e.g.Atotaloftwentyletterswerereceivedlastmonth.上個(gè)月共收到20封信。Youcanchoosefouroutofthetotalnumber.你可以從總數(shù)中選出四個(gè)。Theproblemishowmuchthetotalpaymentis.問題是要支付的總額是多少。Intotalover1,000peopleattendedtheconference.共計(jì)一千多人參加了這個(gè)會(huì)議。考點(diǎn)3atotalof修飾可數(shù)名詞復(fù)數(shù)時(shí)，其謂語動(dòng)詞用復(fù)數(shù)形式；thetotalof...后的謂語動(dòng)詞一般用單數(shù)形式。intotal意為“總計(jì)；合計(jì)”adj.總的；總計(jì)的，一般在句中作定語，不作表語。返回③Itisincreasingveryquickly.increase/?n

kri?s/

v.增加;增大e.g.Thesecasesareontheincrease.這些案件在不斷增加。Hispowerincreased.他的權(quán)力加強(qiáng)了?？键c(diǎn)4反義詞為decrease。也可作名詞。常用短語ontheincrease“正在增加；不斷增長”。Thepopulationofthiscityhasincreasedby5percent.這個(gè)城市的人口增長了5%。Ourcoaloutputhasincreasedto6milliontonsthisyear.我們今年的煤產(chǎn)量增加到了六百萬噸。辨析：increaseby與increaseto①increaseby＋倍數(shù)或百分?jǐn)?shù)，表示“增加了……倍或百分之……”。②increaseto＋具體增長后的數(shù)字，表示“增加到了……”中考在線2:Developinggoodreadinghabitscan_______ourreadingspeed.[撫順、本溪、遼陽]A.reviewB.receiveC.spreadD.increase【】本題采用詞語辨析法。review評(píng)論;receive收到;spread傳播;increase增加,提高。句意為“養(yǎng)成良好的閱讀習(xí)慣可以提高我們的閱讀速度”。D返回④Wecan’tliveinwater,andonlyaboutonethirdofourplanetisland.onethird三分之一【易錯(cuò)點(diǎn)】分?jǐn)?shù)表達(dá)法:分子用基數(shù)詞,分母用序數(shù)詞。分子如果大于1,分母用復(fù)數(shù)形式?？键c(diǎn)5提示:二分之一不能說a/onesecond,而要說a/onehalf;四分之一和四分之三常用aquarter和threequarters表示。e.g.Twothirdsofthestudentsinourclassaregirls.我們班三分之二的學(xué)生是女生。Threequartersoftheinformationistrue.四分之三的信息是真實(shí)的。當(dāng)“分?jǐn)?shù)＋of+名詞”結(jié)構(gòu)作主語時(shí)，謂語動(dòng)詞的單復(fù)數(shù)取決于of后面的名詞。名詞為可數(shù)名詞復(fù)數(shù)，謂語動(dòng)詞用復(fù)數(shù)；名詞為不可數(shù)名詞，謂語動(dòng)詞用單數(shù)。中考在線3:—Susan,howmanywomenteachersarethereinyourschool?—Inourschool,_______oftheteachers_______womenteachers.[玉林]A.thirdfourth;areB.thirdfourth;isC.threefourths;isD.threefourths;are【】句意為“—蘇珊,你們學(xué)校有多少女老師？—在我們學(xué)校,四分之三的老師是女老師”。分?jǐn)?shù)表達(dá)法:分子用基數(shù)詞,分母用序數(shù)詞;分子大于一,分母用復(fù)數(shù)。排除A、B選項(xiàng)?！皌eachers”是復(fù)數(shù)形式,故謂語動(dòng)詞用are。D中考在線4:About______ofthestudentsinKaili

______toschoolbybus.[黔東南]A.twofifth;goB.twofifths;goC.twofifth;goesD.twofifths;goes【】采用主謂一致法。句意為“大約五分之二凱里的學(xué)生乘公共汽車上學(xué)”。英語中,分?jǐn)?shù)的分子用基數(shù)詞,分母用序數(shù)詞;分子大于一時(shí),分母用復(fù)數(shù)形式?！胺?jǐn)?shù)+of+名詞”作主語時(shí),謂語動(dòng)詞與of后的名詞保持?jǐn)?shù)的一致。of后“thestudents”是可數(shù)名詞復(fù)數(shù),則謂語動(dòng)詞用復(fù)數(shù)形式go。B返回⑤Antarcticaiscoveredwithsnowandiceallyearround.becoveredwith被……覆蓋e.g.Ourgardeniscoveredwithgrassandflowers.我們的花園被花草覆蓋著。Pleasecoverthisdeskwithacloth.請(qǐng)用一塊布蓋住這張課桌?？键c(diǎn)6主動(dòng)結(jié)構(gòu)為：cover...with...(用……蓋住……)中考在線5:Mostoftheearth’ssurface______bywater.[新疆]A.iscoveredB.coversC.isgrownD.grows【】句意為“地球表面的大部分被水”。cover覆蓋;grow種植,生長。結(jié)合常識(shí)可知,地球表面大部分被水覆蓋。據(jù)此排除C、D。主語“Mostoftheearth’ssurface”與謂語“cover”構(gòu)成動(dòng)賓關(guān)系,應(yīng)用被動(dòng)語態(tài)。A返回⑥Itmustbetreatedwellforourchildrenandforourchildren’schildren,too!情態(tài)動(dòng)詞的被動(dòng)語態(tài)本句中