沪教版2023年七年级英语上册Unit 3 课时2 Grammar 同步练习

Unit3Grammar

基础篇

一、写出下列名词的复数形式。

1apple2monkey3class4desk

5Foot_________6box__________7piano__________8family_________

9child10toy11Chinese12boy

13photo________—14potato________—15city__________16sheep_________

17country______18tooth19month20woman___________

二、将可数名词和不可数名词分类，填入对应的位置：

apple,bread,coffee,egg,juice,milk,potato,advice,tomato,tea,desk,guitar,tree,bus,weather,information

可数名词：__________________________________________________________________________________

不可数名词：______________________________________________________________________________

三、单项选择。

1.Thisismy,andthesearehis.

A.dogs；dogsB.dog；dogC.dog；dogsD.dogs；dog

2.Thereanappleandthreeonthetable.

A.are,glassofwaterB.is,glassesofwater

C.are,glassesofwaterD.is,glassofwater

3.一Whafsonthetable?

一Thereisalotofonit.Ilikeeatingitverymuch.

A.booksB.orangeC.breadD.vegetables

4.TomandTimhavesomeand.

A.tomatos;chickenB.tomatoes;chickensC.tomatoes;chickenD.tomatos;chickens

5.Thereisashopandtwoshopsnotfarawayfrommyschool.

A.sport;shoesB.sports;shoesC.sport;shoeD.sports;shoe

6.一DidyouwatchTVathomelastSunday?

-No,Ifedsomeatmygrandma'shome.

A.cowB.sheepC.chickenD.dog

7.—Mom,Iamhungry.MayIhavesome.

——Ofcourse.Butdon'teattoomuch.

A.breadB.noodleC.dumplingD.hamburger

8.Thereis(有)muchintheplate(盘子).

A.bananaB.appleC.pearsD.chicken

9.Letmeshowyousomeofsome

A.photos,tomatoesB.photoes,tomatos1C.photos,tomatosD.photoes,tomatoes

10.Wehavemuchtodoeveryday.

A.workB.jobC.jobsD.works

11KateandAliceareinthesame,buttheyareindifferent.

A.grade；classB.grade；classesC.grades；classD.grades；classes

12.There________some_________onthedesk.

A.is;keyB.are;keysC.is;keysD.are;key

13.Howmuch________doyouwant?

A.pensB.applesC.coffeeD.pears

14.一Howmucharethe________?

一Theyare80_______.

A.shoes;dollarB.pairofshoes;yuanC.shoes;yuanD.pairofshoes;dollars

15.ReadingEnglishstories________alotof________.

A.are;funsB.is;funC.are;funD.is;funs

16.There________twobooksandacuponthetable.

A.haveB.areC.isD.be

17.There________apencilandsomebooksonthedesk.

A.beB.isC.areD.am

四、用所给单词的适当形式填空

1.1wanttobuytwobottlesof(milk)intheshop.

2.Three(quarter)oftheEarthiscoveredwithwater.

3.Wecanseealotof(pollute)everywhere.

4.1sawmany(animal)inthezooyesterday.

5.There(be)twobooksandapencilonthedesk.

6.There(be)apencilandtwobooksonthedesk.

7.Wecangetalotof(energy)fromfood.

8.There(be)four(Japanese)andtwo(German)inthegroup.

9.There(be)anappleandtwopearsonthetable.

10.Wehavetwenty(sheep)onthefarm.

11.Thereissome(food)inthebowl.

12.Thebabyhasonlytwo(tooth)now.

13.Thereisalotof(water)inthebottle.

14.Therearefive(people)inhisfamily.

15.Let'stakesome(photo)ofthebeautifulplace.

16.1havelotsof(tomato)here.

17.The(child)areplayinggamesontheplaygroundnow.

18.Their(dictionary)looknew.

19.Theyare(woman)doctors.

20.Theyare(orange)trees.

五、翻译短句。(therebe结构)

1椅子下面有一只猫。

2教室里没有20个学生。

3袋子里有一些面包。

4书桌上有两本书吗？

5你们学校有多少个班?

提高篇

六、语法选择：

Wethrowawaygarbagealmosteveryday.]doesitgo?Mostofit2intothesea.There

3fivelargegarbagepatches(垃圾带)inthesea.ThelargestoneistheGreatPacificGarbagePatch.

Scientistsaresayingthatthepatchisgettingbiggerandbigger.

ThepatchisinthePacificOceanbetweenCalifornia4Hawaii.Itisquitelarge.Accordingto

Livescience,5hasanareaof1.6millionkm2.Thatisabout100times(倍)6thanBeijing.

Mostofthegarbageisplastic(塑料)，includingbottles,bagsandfishingnets.AccordingtoFoxNews,there

areabout79,000tons(吨)ofplasticinthepatch.Thafsabout250piecesofplasticforeveryperson7Earth.

Isoneofthosepiecesfromyou?

Theplasticcanharm(伤害)seaanimalsand8thewater.Scientistsaretrying9waysto

cleanupgarbageinthesea.Butthemostimportantthingis10garbagefromgoingintothesea.

1.A.WhoseB.HowC.WhyD.Where

2.A.goB.goesC.goingD.went

3.A.areB.isC.amD.be

4.A.butB.orC.norD.and

5.A.itB.itsC.ifsD.its9

6.A.bigB.biggerC.thebiggerD.biggest

7.A.atB.inC.onD.under

8.A.polluteB.pollutesC.pollutingD.polluted

9.A.differB.differenceC.differentD.differently

10.A.stopB.stopsC.stoppedD.tostop

七、语法填空

Apetispartofafamily.Maybesomepeopledon'tliketolive1apet.ButintheUSA,peoplelove

2(animal).

Almosteveryfamilykeeps(饲养)apet.Keepingapetathometakestime3thepetneeds

specialcare.Ifyouwant4(have)apet,suchasadogoracat,youshouldfindsomeinformationaboutit

online.Thenyoucanlearnmoreaboutitandknowhowtokeepit5(good).

Everypetneeds6placetorunandplay.Whafsmore,youneedtofeedyourpetontime.Ifyoukeep

adog,forexample,walkingis7(importance)toit.

Youneedtowalkitatleast8(two)aday,inthemorningandintheevening.Youcanalsoplay

together.Thatwillmakebothofyounot9(boring).Andyouneedtowashyourdogonceamonthto

makeitclean.Remember:don'tdoanythingbadtoyour10(pet)health.Itneedsafamilyandlotsoflove!

八、阅读理解

A(地球的探索)

Menbegantomakemapsoftheworldhundredsoryearsago.Butthere

wasalwayssomethingwronginearlymaps,becausepeopledidn'tknowmuchabouttheworldthen.Theyeven

thoughttheEarthwasflat（扁平的）.

SomepeoplemightthinktheEarthwaslikeaball,buttheycouldnotbesure.Andmostpeopleatthattime

wouldlaughatthemwhentheysaidtheEarthwasaball.About500yearsago,peoplelearnedaboutthetruth.

CaptainMagellansailed（航行）hisshipswest.Buthecamebackhomefromtheeast.HesailedaroundtheEarth.

CaptainCookalsosailedwestandcamehomefromtheeast.

Bothofthecaptainsdrewmapsontheirtrips.Thesemapshelpedotherpeoplealot.Andthenpeoplecould

makebettermapsbecausetheylearnedmoreandmoreabouttheworld.

Beforespacetravelbegan,ourmapsalready（已经）lookedreallygood.NowpeoplecantakephotosoftheEarth

fromspace.ThesephotosshowtheEarthinanewway.Peoplearemakingmapsoftheworldbetterandbetter.

l.Whywastherealwayssomethingwronginearlymaps?

A.Peopledidn'thavegooddrawingtools.B.Peopleknewlittleabouttheworldthen.

C.Peoplejustbegantomakemaps.D.Peoplecouldn'tgotofarplaces.

2HowdidpeoplelearnthattheEarthwaslikeaball?

A.Theycouldn,tseeCaptainMagellan'sshipsinthewest.

B.CaptainCooksaidthattheEarthwasaball.

C.CaptainMagellansailedwestbutcamebackfromtheeast.

D.CaptainCookdrewmapsonhistrip.

3.Whatdoesthewritermeanbythelastparagraph?

A.Mapsoftheworldwerebadbeforespacetravelbegan.

B.PhotosoftheEarthfromspacehelppeoplemakebettermaps.

C.PeopleweresurethattheEarthwasaballaftertheytravelledintospace.

D.PeoplethoughttheEarthinadifferentwayaftertheytravelledintospace.

4.Whatisthebesttitle（标题）ofthispassage?

A.HowtoMakeMapsB.M叩softheEarth

C.HistoryoftheEarthD.HistoryofMap-making

B阅读填空

Airisimportanttous.]Weliveinairbutwecannotseeit.Wecanonlyfeelit.2.

Sadly,theproblemofairpollutionisgettingserious（严重的）today.Airpollutionisbadforpeople'shealth._

3Worse,airpollutionmakestheEarthbecomewarmerandchangestheweatheraroundtheworld.Ifsreally

importantforustodosomethingandstoptheproblemfromgettingworse.Weshouldtrytodriveless.4

Also,weshouldreduce（减少）thewasteinourdailylivesbecausetheburningofrubbishpollutestheair.5

A.Itmakesusgetsickeasily.

B.Wecanfeelitwhenitismoving.

C.Trytofindanewwaytousetheoldthingsagaininsteadofthrowingthemaway.

D.Ifweneedtogotoaplacefarawayfromus,weshouldtakethebusortheunderground.

E.Wecanliveforafewdayswithoutfoodorwater,butwecannotliveformorethanafewminuteswithoutair.

Unit3Grammar

基础篇

一、写出下列名词的复数形式。

1apple________2monkey________3class_________4_desk___

5Foot_________6box__________7piano__________8family_

9child10toy11Chinese12boy

13photo_________14potato________—15city__________16sheep_

17country______18tooth19month―20woman

【答案】1.apples2.monkeys3.classes4.desks5.feet6.boxes7.pianos8.families9.childrenlO.toys

11.Chinese12.boys13.photos14.potatoes15.cities16.sheep17.countries18.teeth19.months

20.women

二、将可数名词和不可数名词分类，填入对应的位置：

apple,bread,coffee,egg,juice,milk,potato,advice,tomato,tea,desk,guitar,tree,bus,weather,information

可数名词：__________________________________________________________________________________

不可数名词：______________________________________________________________________________

【答案］可数名词：apple,egg,potato,tomato,tea,desk,guitar,tree,bus,

不可数名词bread,coffeejuice,milk,advice,tea,weather,information

三、单项选择。

1.Thisismy,andthesearehis.

A.dogs；dogsB.dog；dogC.dog；dogsD.dogs；dog

【答案】C

【解析】句意：这是我的狗，这些是他的狗。

考查名词。根据“Thisis”可知，第一空应用单数名词；根据“theseare”可知，第二空用复数名词，故选C。

2.Thereanappleandthreeonthetable.

A.are,glassofwaterB.is,glassesofwater

C.are,glassesofwaterD.is,glassofwater

【答案】B

【解析】句意：桌子上有一个苹果和三杯水。

考查主谓一致和不可数名词的表达。therebe句型中，be动词形式与最接近的名词一致，应与“an

apple”一致，用is；water是不可数名词，表达数量应用量词，空前有“three”修饰，glass用复数形式，而wat

er不能加s,应表达为threeglassesofwater,故选B。

3.—Whafsonthetable?

-Thereisalotofonit.Ilikeeatingitverymuch.

A.booksB.orangeC.breadD.vegetables

【答案】C

【解析】句意：——桌子上有什么？——有很多面包，我非常喜欢吃。

考查名词辨析和不可数名词。books书；orange橙汁；bread面包；vegetables蔬菜。There

is...“有"，主语应该是单数或不可数名词，排除A和D；根据“Ilikeeatingitvery

much”，B选项是饮料，不是吃的。故选C。

4.TomandTimhavesomeand.

A.tomatos;chickenB.tomatoes;chickensC.tomatoes;chickenD.tomatos;chickens

【答案】C

【解析】句意：汤姆和蒂姆吃了一些西红柿和鸡肉。

考查可数名词复数和不可数名词。tomato表示“西红柿”，其复数形式为tomatoes；chicken表示“鸡肉”时，

是不可数名词，表示“小鸡”时，是可数名词。根据“TomandTimhavesome...”可知此处是指鸡肉，故选C。

5.Thereisashopandtwoshopsnotfarawayfrommyschool.

A.sport;shoesB.sports;shoesC.sport;shoeD.sports;shoe

【答案】D

【解析】句意：离我的学校不远有一家体育用品店和两家鞋店。

考查名词的用法。sport运动，复数形式为sports；shoe鞋，复数形式为shoes。sports

shop“体育用品商店”，固定短语；shoe

shop“鞋店”，shoe是名词做定语，故用单数形式，变复数时，只需要shop变复数，shoe不变。故选D。

6.一DidyouwatchTVathomelastSunday?

-No,Ifedsomeatmygrandma'shome.

A.cowB.sheepC.chickenD.dog

【答案】B

【解析】句意：——上星期天你在家看电视了吗？——没有，我在奶奶家喂了一些羊。

考查名词辨析。cow奶牛；sheep羊；chicken鸡；dog狗。空前面有some修饰，后面如果是接可数名词应该

用其复数形式。只有B选项sheep单复数形式相同，cow、chicken和dog都是单数。故选B。

7.一Mom,Iamhungry.MayIhavesome.

一Ofcourse.Butdon'teattoomuch.

A.breadB.noodleC.dumplingD.hamburger

【答案】A

【解析】句意：一妈妈，我饿了。我可以吃点面包吗？一当然。但是不要吃太多。

考查可数名词和不可数名词。bread面包；noodle面条；dumpling饺子；hamburger汉堡包。根据"some”可

知，此空需要一个不可数名词或者可数名词复数，结合选项，BCD均是可数名词单数形式，因此“bread”

符合句意。故选A。

8.Thereis（有）much______intheplate（盘子）.

A.bananaB.appleC.pearsD.chicken

【答案】D

【解析】句意：盘子里有许多鸡肉。

考查名词辨析。banana香蕉，可数名词单数；apple苹果，可数名词单数；pears梨，可数名词复数；chicke

n鸡肉，不可数名词，根据空前的"much”修饰不可数名词可知，应该用chicken,故选D。

9.Letmeshowyousomeofsome.

A.photos,tomatoesB.photoes,tomatosC.photos,tomatosD.photoes,tomatoes

【答案】A

【解析】句意：让我给你看一些西红柿的照片。

考查名词复数形式。photo是无生命的以o为结尾的名词，变复数直接加s。tomato是有生命的以o为结尾的

名词，变复数直接加es,故选A。

10.Wehavemuchtodoeveryday.

A.workB.jobC.jobsD.works

【答案】A

【解析】句意：我们没太有太多的工作要做。

考查名词辨析。job和work都有“工作”的意思，job是可数名词，复数是jobs；work是不可数名词。空格前

面的much修饰不可数名词。故选A。

11KateandAliceareinthesame,buttheyareindifferent.

A.grade；classB.grade；classesC.grades；classD.grades；classes

【答案】B

【解析】句意：凯特和爱丽丝在同一年级，但他们在不同的班级。

考查名词单复数。grade年级；class班级。第一空前为same,故grade应用单数形式，C、D选项可排除；第

二空前为different,故class应用复数形式。故选B。

12.Theresomeonthedesk.

A.is;keyB.are;keysC.is;keysD.are;key

【答案】B

【解析】句意：桌子上有一些钥匙。

考查主谓一致和名词复数。There

be中be动词取决于其后的名词；some修饰可数名词复数或不可数名词，key为可数名词，此处应用复数形

式，排除A/D选项；名词是复数，be动词应用are,故选B。

13.Howmuchdoyouwant?

A.pensB.applesC.coffeeD.pears

【答案】C

【解析】句意：你想要多少咖啡？

考查名词辨析。pens钢笔，可数名词的复数形式；apples苹果，可数名词的复数形式；coffee咖啡，不可数

名词；pears梨，可数名词的复数形式。how

much修饰不可数名词，四个选项中只有coffee是不可数名词，故选C。

14.一Howmucharethe?

一Theyare80.

A.shoes;dollarB.pairofshoes;yuanC.shoes;yuanD.pairofshoes;dollars

【答案】C

【解析】句意：——这些鞋多少钱？—它们80元。

考查名词单复数和价格的表达。根据问句中的are可知问句主语为复数，排除B项和D项；dollar为可数名

词，有复数形式，yuan没有复数形式，此处应该说80doilars,排除选项A。故选C。

15.ReadingEnglishstoriesalotof.

A.are;funsB.is;funC.are;funD.is;funs

【答案】B

【解析】句意：读英语故事很有趣。

考查主谓一致和名词。句子主语是动名词短语“ReadingEnglish

stories”，谓语动词应用单数形式，排除A/C选项；firn“乐趣”，是不可数名词，不可以加s,排除D选项，

故选B。

16.Theretwobooksandacuponthetable.

A.haveB.areC.isD.be

【答案】B

【解析】句意：桌子上有两本书和一个杯子。

考查therebe句型。在there

句型

be中，be动词的形式在人称和数上与其后面的主语保持一致。如果有两个或两个以上的名词作主语时

,be动词与最近的主语保持一致。twobooks为可数名词复数，故be动词用are。there

be句型不能与实义动词have或has同时使用。故选B。

17.Thereapencilandsomebooksonthedesk.

A.beB.isC.areD.am

【答案】B

【解析】句意：桌子上有一支铅笔和一些书。

考查主谓_致。此句

是Therebe句型，谓语动词用“就近原则”，be与最近的名词保持一致，此处应与“a

pencil”一致，be动词应用is,故选B。

四、用所给单词的适当形式填空

1.1wanttobuytwobottlesof(milk)intheshop.

2.Three(quarter)oftheEarthiscoveredwithwater.

3.Wecanseealotof(pollute)everywhere.

4.isawmany(animal)inthezooyesterday.

5.There(be)twobooksandapencilonthedesk.

6.There(be)apencilandtwobooksonthedesk.

7.Wecangetalotof(energy)fromfood.

8There(be)four(Japanese)andtwo(German)inthegroup.

9.There(be)anappleandtwopearsonthetable.

10.Wehavetwenty(sheep)onthefarm.

11.Thereissome(food)inthebowl.

12.Thebabyhasonlytwo(tooth)now.

13.Thereisalotof(water)inthebottle.

14.Therearefive(people)inhisfamily.

15.Lefstakesome(photo)ofthebeautifulplace.

16.1havelotsof(tomato)here.

17.The（child）areplayinggamesontheplaygroundnow.

18.Their（dictionary）looknew.

19.Theyare（woman）doctors.

2O.Theyare（orange）trees.

【答案】k2.quaters3.pollution4.animals5.are6.is7.energy8.areJapaneseGermans9.is

lO.sheep11.food12.teeth13.water14.poeple15.photos16.tomatoes17.children18.dictionaries

19.women20.orange

五、翻译短句。（therebe结构）

1椅子下面有一只猫。

【答案）Thereisacatunderthechair.

2教室里没有20个学生。

【答案】Therearenot20studentsintheclassroom.

3袋子里有一些面包。

（答案］Thereissomebreadinthebag.

4书桌上有两本书吗？

【答案】Arethereare2booksonthedesk?

5你们学校有多少个班？

【答案］Howmanyclassesarethereinyourschool?

提高篇

六、语法选择：

Wethrowawaygarbagealmosteveryday.］doesitgo?Mostofit2intothesea.There

3fivelargegarbagepatches（垃圾带）inthesea.ThelargestoneistheGreatPacificGarbagePatch.

Scientistsaresayingthatthepatchisgettingbiggerandbigger.

ThepatchisinthePacificOceanbetweenCalifornia4Hawaii.Itisquitelarge.Accordingto

Livescience,5hasanareaof1.6millionkm2.Thatisabout100times（倍）6thanBeijing.

Mostofthegarbageisplastic（塑料）,includingbottles,bagsandfishingnets.AccordingtoFoxNews,there

areabout79,000tons（口屯）ofplasticinthepatch.Thafsabout250piecesofplasticforeveryperson7Earth.

Isoneofthosepiecesfromyou?

Theplasticcanharm（伤害）seaanimalsand8thewater.Scientistsaretrying9waysto

cleanupgarbageinthesea.Butthemostimportantthingis10garbagefromgoingintothesea.

1.A.WhoseB.HowC.WhyD.Where

2.A.goB.goesC.goingD.went

3.A.areB.isC.amD.be

4.A.butB.orC.norD.and

5.A.itB.itsC.ifsD.its5

6.A.bigB.biggerC.thebiggerD.biggest

7.A.atB.inC.onD.under

8.A.polluteB.pollutesC.pollutingD.polluted

9.A.differB.differenceC.differentD.differently

10.A.stopB.stopsC.stoppedD.tostop

【答案】l.D2.B3.A4.D5,A6.B7.C8.A9.C10.D

【解析】本篇文章难度适中，主要讲述海洋垃圾。海洋垃圾对海洋生态系统造成极大的破坏，最后呼吁

我们停止向海洋扔垃圾。

1.句意“这些垃圾去哪里了？”。

本题考查疑问词辨析。A.谁的；B.如何，怎样（问方式）；C.为什么（问原因）；D.在哪里（问地点）。

根据Mostofit2intothesea”他们大部分都进入了海洋”可知，问地点，故选D。

2.句意“他们当中的大部分进入了海洋”-

本题考查动词形式以及主谓一致。根据句式可知，空处应填谓语，排除C；且表示客观事实，用一般现在

时，排除D；主语为mostofit,谓语用单数goes,故选B。

3•句意“在海洋中，有五大垃圾带”。

本题考查主谓一致。therebe句型中，be动词的单复数根据be动词后面的主语决定。根据空后fivelarge

garbagepatches"五大垃圾带”可知，用复数are,故选A。

4.句意“太平洋的垃圾带位于加利福尼亚和夏威夷之间”。

本题考查连词辨析。A.但是（表示转折）；B.或者，否则；C.不；D.和（表示并列，顺承）。根据句意可

知，译为“在加利福尼亚和夏威夷之间”。between...and…"在...与....之间"。故选D。

5.句意“根据生活科学网，它有160万平方千米”。

本题考查代词。A.它（人称代词主格或宾格）；B.它的（形容词性物主代词或名词性物主代词）；C.它是

；D.形式错误，应为its或it，s。根据句式可知，空处缺少主语，且代指thepatch,用it,故选A。

6.句意“那个比北京大100倍”。

本题考查形容词的比较等级。A.原级；B.比较级；C.最高级；D.最高级。根据空后than可知，用比较级，

故选B。

7.句意“这相当于地球上每个人拥有250块塑料”。

本题考查介词辨析。A.以……；B.在……里；C.在……上；D.在......下。根据句意可知，表示“在地球上”

oonEarth在地球上，故选C。

8.句意“塑料能够伤害海洋动物以及污染水”。

本题考查动词的形式。根据空前and可知，空处与harm并列，所以空处用动词原形pollute,故选A。

9.句意“科学家尝试不同的方法来清理海洋垃圾”。

A.使……不同(动词)；B.不同(名词)；C.不同的(形容词)；D.不同地(副词)。根据空后ways可知

，空处用形容词，译为“不同的方法”。故选C。

10.句意“最重要的事情就是阻止垃圾进入海洋”。

本题考查动词的形式。根据空前is可知，空处用不定式作表语，译为“阻止垃圾进入海洋”，表示命令、建

议和劝告，故选D。

七、语法填空

Apetispartofafamily.Maybesomepeopledon'tliketolive1apet.ButintheUSA,peoplelove

2(animal).

Almosteveryfamilykeeps(饲养)apet.Keepingapetathometakestime3thepetneeds

specialcare.Ifyouwant4(have)apet,suchasadogoracat,youshouldfindsomeinformationaboutit

online.Thenyoucanlearnmoreaboutitandknowhowtokeepit5(good).

Everypetneeds6placetorunandplay.Whafsmore,youneedtofeedyourpetontime.Ifyoukeep

adog,forexample,walkingis7(importance)toit.

Youneedtowalkitatleast8(two)aday,inthemorningandintheevening.Youcanalsoplay

together.Thatwillmakebothofyounot9(boring).Andyouneedtowashyourdogonceamonthto

makeitclean.Remember:don'tdoanythingbadtoyour10(pet)health.Itneedsafamilyandlotsoflove!

【答案】1.with2.animals3.and/because/for4.tohave5well/better

6.a7.important8.twice9.bored10.pefs

八、阅读理解

A(地球的探索)

Menbegantomakemapsoftheworldhundredsofyearsago.Butthere

wasalwayssomethingwronginearlymaps,becausepeopledidn'tknowmuchMM-

abouttheworldthen.TheyeventhoughttheEarthwasflat(扁平的).

SomepeoplemightthinktheEarthwaslikeaball,buttheycouldnotbesure.Andmostpeopleatthattime

wouldlaughatthemwhentheysaidtheEarthwasaball.About500yearsago,peoplelearnedaboutthetruth.

CaptainMagellansailed（航行）hisshipswest.Buthecamebackhomefromtheeast.HesailedaroundtheEarth.

CaptainCookalsosailedwestandcamehomefromtheeast.

Bothofthecaptainsdrewmapsontheirtrips.Thesemapshelpedotherpeoplealot.Andthenpeoplecould

makebettermap