八年级英语下册Unit 4 课时3 Section A 3a-3d大单元分层作业

Unit4TheWondersofNature

课时3SectionA(3a-3d)分层作业

9作业导航

核心知识速记（”基础达标02能力提升（）3拓展培优（）4思维进阶

核心知识速记

词汇

long长的;length长度;wide宽的;width宽度;high高的;

height高度;deep深的;depth深度;river河流;waterfall瀑布;

civilization文明;protect保护;development发展;ancienl古代的；important重要的

短语

theYellowRiver黄河;theYangtzeRiver长江;theNileRiver尼罗河;

HukouWaterfall壶口瀑布;motherriver母亲河:ancientcivilizations古代文明;

atallcosts不惜•切代价;thedevelopmentof的发展；learnabout了解;

byallmeans尽一切办法

句型

1.TheYangtzeRiverisabout6,300kilometreslong.

2.TheYellowRiveristhesecondlongestriverinChina.

3.Both(heNileand(heYellowRiverhelpedancienlcivilizationstodevelop.

4.Weshouldprotectthematallcosts.

基础达标

一、单词默写（根据音标写单词）

1.______/lei]0/n.长度2,_/haUn.高度

3.______/depO/n.深度4._/woiofoVn.瀑布

5.______/pivalai'zeifi/n.文明6._/prokekt/v.保护

7.______/dI'vclopmant/n.发展8,_/kn£nt/adj.古代的

9.______/rva(r)/n.河流10../m'point/adj.重要的

【答案】1.length2.height3.depth4.waterfall5.civilization

6.protect7.development8.ancient9.river10.important

二、词组默写

1.黄河2.长江

3.尼罗河4.壶口瀑布

5.母亲河6.古代文明

7.不惜一切代价8.……的发展

9.了解10.尽一切办法

【答案】1.theYellowRiver2.theYangtzeRiver3.theNileRiver

4.HukouWaterfall5.motherriver6.ancientcivilizations

7.atallcosts8.thedevelopmentof9.learnabout10.byallmeans

三、根据要求完成句子。

I.长江长约6300千米。

TheYangtzeRiverisabout.

2.黄河是中国第二长河。

TheYellowRiverisriverinChina.

3.尼罗河是世界上最长的河流.

TheNileisriverintheworld.

4.黄河帮助了古代文明的发展。

TheYellowRiverthedevelopmentof.

5.我们应该不惜一切代价保护这些河流。

Weshouldthem.

6.随着文明的发展，人们更加了解自然奇观。

Withtheof,peopleknowmoreaboutthewondersofnature.

7.我喜欢学习关于世界河流的知识。

Iliketheriversaroundtheworld.

8.我们应该尽一切办法保护自然。

Weshouldprotectnature.

【答案】1.6,300kilometerslong2.thesecondlongest3.thelongest

4.helped;ancientcivilizations5.protect;atallcosts6.development;civilizations

7.learningabout8.byallmeans

能力提升

四、用括号内所给词的适当形式填空。

1.The(long)oftheYangtzeRiverisabout6,300kilometers.

2.Thebuildingis100(heighi)meters.

3.What'sthe(deep)ofthislake?

4.Weshould(protection)(hewildanimals.

5.Withthe(develop)oftechnology,weknowmoreaboutnature.

6.Many(civilization)startednearbigrivers.

7.Thisisan(ancient)citywithalonghistory.

8.Riversare(important)foralllivingthings.

［答案］I.length2.high3.depth4.protect5,odevelopment6.civilizations7.ancient8.important

五、阅读短文，从方框中选择适当的词并用其正确的形式填空(每词限用一次)。

long,protect,river,ancient,development,civilization,important,wide,high,deep

Riversarethecradleofhuman1..Theyarevery2.inpeople'slife.Theworld

hasmanyfamous3..TheNileisthe4.riverintheworld,withalengthof6,671

kilometers.TheYangtzeRiveristhelongestinAsia,about6,300kilometers5..The

YellowRiver,China's"motherriver”,helpedthe6.ofChinesecivilizations.These

riversrunthrough7.citiesandmoderncities.Theyprovidewaterforpeopleandmakethe

land8.andrich.However,riversarefacingpollutionnow.1('sourdutyto9.them.

Wcmustrealizethe10.ofriverprotectionandtakeactionatonce.

［答案］1.civilization2.important3.rivers4.longest5.long6.development7.ancient

9.wide9.protect10.depth

【导语】本文介绍河流是人类文明的摇篮，讲述世界著名河流概况、河流的重要意义及保护

河流的必要性。

1.句意:河流是人类文明的摇篮。civilization文明，符合语境。故填civilizationo

2.句意：它们在人类生活中非常重要。important重要的。故填important0

3.句意：世界上有许多著名河流。many后用复数riverso故填riverso

4.句意：尼罗河是世界上最长的河流。用最高级longest故填longesto

5.句意：长江长约6300千米。long长的。故填long。

6.句意:黄河助力中华文明的发展。development发展。故填developmento

7.句意：河流穿过古代与现代城市。ancient古代的。故填anciento

8.句意:让土地宽阔肥沃.wide宽阔的。故填wide。

9.句意：保护它们是我们的责任。to后接动词原形protecto故填protecto

10.句意：我们必须意识到护河的重要意义。depth深度，此处表重要程度。故填deptho

03拓展培优

六、阅读还原。

Riversareveryimportant(ohumans.1.Manygreatcivilizationsstartedbesidebig

rivers.TheYellowRiverandtheYangtzeRiverarethebirthplacesofChinesecivilization.

2.Itis6.671kilometerslongandhelpedancientEgyptdevelop.

Riversbringuswaterandrichsoil.Theyhelpplantsgrowandfeedlotsofanimals.3.

Somerivershavewonderfulwaluifailsthatiillraclmillionsofvisitorseveryyear.

Today,manyriversarcpolluted.4.Wemuststopthrowingrubbishintoriversand

plantmoretreesalongthem.5.

A.TheNileisthelongestriverintheworld.

B.Theyareoneofthegreatestwondersofnature.

C.Butsomepeoplestillpollutethem.

D.Weshouldprotectriversatallcosts.

E.Theyalsocreatebeautifulnaturalscenery.

F.Riversarcverywideanddeep.

【答案】BAEDC

【解析】

1.答案B前文总述河流重要，B承接说明河流是自然奇观，引出下文。故选Bo

2.答案A前文讲中国河流，A介绍尼罗河，衔接世界河流。故选Ao

3.答案E前文讲河流提供水土，E补充河流造就美景，逻辑顺承。故选Eo

4.答案D前文讲河流污染，D提出要不惜一切保护河流。故选D.

5.答案C补充仍有人污染河流，强化保护必要性。故比Co

七、阅读理解。

Theworld'sriversareamazingnaturalwonders.Theyrunthroughmountains,forestsandcities,

bringinglifeto(heearth.TheYangtzeRiveristhelongestriverinAsiaandthethirdlongestinthe

world.Itisabout6,300kilometerslong.ItstartsfromtheQinghai^TibetPlateauandrunsthrough

11provincesinChina.

TheYellowRiveristhesecondlongestriverinChina.Itis5,464kilometerslong.Itiscalledthe

“motherriver"ofChinabecauseitnurturedtheancientChinesecivilization.AlongtheYellow

River,youcanvisitthewonderfulHukouWaterfall.

TheNileinAfricaisthelongestriverintheworld,withalengthof6,671kilometers.Itsupported

theancientEgyptiancivilizationforthousandsofyears.

Theseriversarenotjustwater.Theyaretreasuresofnature.Butnowtheyarefacingpollutionand

habitatloss.Weneedtoprotectthemsothattheycankeepbeautifulandfulloflifeforour

children.

LWhichriveristhethirdlongestintheworld?

A.TheNileB.TheYellowRiverC.TheYangtzeRiverD.TheAmazonRiver

2.HowlongistheYellowRiver?

A.6,300kmB.5.464kmC.6,671kmD.4,564km

3.WhyistheYellowRivercalledChina'samotherriverw?

A.Becauseitisverylong.

B.BecauseitnurturedancientChinesecivilization.

C.Becauseithasabigwaterfall.

D.Becauseitrunsthroughmanycities.

4.WhereistheNile?

A.InAsiaB.InAfricaC.InEuropeD.inAmerica

5.Whataretheriversfacingnow?

A.PollutionandhabitatlossB.Toomanyvisitors

C.ToomuchwaterD.Coldweather

【答案】CBBBA

【解析】

1.答案C文中明确:TheYangtzeRiver*,•thethirdlongestintheworldo故诜Co

2.答案B文中明确:TheYellowRiver^'is5,464kilometerslong®故选B。

3.答案B文中明确：itnurturedtheancientChinesecivilization。故选B。

4.答案B文中明确：TheNileinAfricao故选B。

5.答案A文中明确：facingpollutionandhabitatlosso故选A。

八、完形填空。

Riversarcwonderfulgiftsofnature.Theyarc1.foralllivingthingsonEarth.Many

oldcivilizationsgrewup2.bigrivers.TheYellowRiverandYangtzeRiverarethe

3.ofChinesecivilization.TheNilehelpedancientEgypt4..

Riversgiveuswatertodrinkandirrigatecrops.Theyalsomakebeautiful5.,like

waterfalls.Manypeoplelovetovisitthesebeautifulplaces.

6.,manyriversarenotsafenow.Peoplethrowrubbishintothemandcutdowntreesby

therivers.Thewalerbecomesdirtyandllic7.ofriversisgellingworse.

Ittstimeforusto8.action.Weshouldstoppollutingriversandplantmoretrees.Wc

mustprotectrivers9.becausetheyarepartofnature*swonders.Lei'sworktogetherto

keeprivers10.andbeautiful.

1.A.safeB.importantC.dangerousD.popular

2.A.besideB.aboveC.belowD.behind

3.A.SymbolB.dreamC.birthplaceD.future

4.A.DevelopB.stopC.fallD.wait

5.A.peopleB.animalsC.plantsD.scenery

6.A.SoB.HoweverC.BecauseD.If

7.A.colorB.sizeC.environmentD.price

8.A.takeB.makeC.doD.give

9.A.attimesB.lastC.atallcostsD.atfirst

10.A.DirtyB.cleanC.deepD.wide

【答案】本文介绍河流的重要性、文明起源、河流面临的问题及保护措施。

1.B句意：河流对地球生物至关重要。important重要的。故选B。

2.A句意：许多古文明在大河旁兴起。beside在……旁边。故选A。

3.C句意：黄河长江是中华文明发源地。birthplace发源地。故选C。

4.A句竟：尼罗河助力古埃及发展。develop发展。故诜A。

5.D句意：河流造就美丽风景，如瀑布。scenery风景。故选D。

6.B句意：然而，如今许多河流不再安全。however表转折。故选B。

7.C句意：河水变脏，河流环境恶化。environment环境。故选C。

8.A句意：是时候采取行动了。takeaction固定搭配。故选A。

9.C句意:我们要不惜一切保护河流。atallcosts不惜一切代价。故选C。

10.B句意：共同保持河流干净美丽.clean干净的“故选

04思维进阶

Rivers:TheCradleofCivilization

RiversareamongthemostamazingnaturalwondersonEarth.Theycoverlessspace(han

oceans,huttheyfeedbillionsofpeopleandnurturethousandsofcivilizations.TheYangtzeRiver

andYellowRiverareChina'stwomotherrivers.TheYangtzeis6,300kmlong,thelongestin

Asia.Itprovideswaterforhundredsofcitiesandmillionsofhectaresoffarmland.TheYellow

River,5,464kmlong,witnessedthebirthanddevelopmentofancientChinesecivilization.Hukou

WaterfallontheYellowRiverisoneofthegreatestyellowwaterfallsintheworld.TheNilein

Egyptistheworld'slongestriver(6,671km).ItsupportedancientEgyptiancivilizationformore

than5,000years.Withoutrivers,manygreatcivilizationswouldneverhaveexisted.Today,rivers

arestillveryimportant.Buttheyaretroubledbypollution,over-useandhabitatdamage.Rubbish,

chemicalsandplasticwastemakeriverwaterdirty.Someriversevendryupduringdryseasons.lo

protectrivers,countriesaroundtheworldaremakinglaws,buildingprotectionzonesandcleaning

uprubbish.Everyonecanhelp:savewater,stoplittering,andtellotherstoloverivers.

Task1:CriticalThinking

1.Whyarcriverscalledthecradleofcivilization?(Answerwith“because")

2.Listtwodangersthatriversarefacingnow:

Reason1:__________________________________________________________________________

Reason2:___________________________________________________________________________

WriteanEnglishslogantoprotectrivers:“!”

Task2:InformationChart

Comp