资源简介 / 让学习更有效 暑假自学课 | 英语学科【弯道超车】2025年九年级年级英语暑假自学习精讲精练(通用版)专题30 基数词一、基数词的定义基数词(Cardinal Numbers) 表示数量或数目,用于计数。例:one(1)、two(2)、three(3)、ten(10)、hundred(百)、thousand(千)等。二、基数词的构成规则1. 1-12(特殊记忆)数字 英文 数字 英文1 one 7 seven2 two 8 eight3 three 9 nine4 four 10 ten5 five 11 eleven6 six 12 twelve2. 13-19(+teen)规则:个位数 + teen例:13 thirteen | 14 fourteen | 15 fifteen16 sixteen | 17 seventeen | 18 eighteen | 19 nineteen注意:13(thirteen)、15(fifteen)、18(eighteen)拼写有变化。3. 20-90(整十数,+ty)规则:个位数 + ty例:20 twenty | 30 thirty | 40 forty50 fifty | 60 sixty | 70 seventy | 80 eighty | 90 ninety4. 21-99(非整十数)规则:十位数 + 连字符(-) + 个位数例:21 twenty-one | 35 thirty-five | 99 ninety-nine5. 100及以上数字 英文100 one hundred101 one hundred and one200 two hundred1,000 one thousand10,000 ten thousand100,000 one hundred thousand1,000,000 one million注意:hundred, thousand, million 表示具体数字时不加s(如:three hundred)。表示"成百上千"等概数时加s(如:hundreds of students)。英式英语中,百位数和十/个位数之间加 and(如:105 → one hundred and five)。三、基数词的用法1. 表示数量There are twenty-five students in the class.(班上有25名学生。)She has three books.(她有三本书。)2. 表示年龄He is twelve (years old).(他12岁。)She learned to swim at the age of five.(她5岁学会游泳。)3. 表示时间(小时)It's nine o'clock.(现在是9点。)The train leaves at two thirty.(火车2:30发车。)4. 表示编号Room 305(305房间)→ Room three o fivePage 50(第50页)→ Page fiftyBus No. 8(8路公交车)→ Bus eight5. 表示年份1999 → nineteen ninety-nine2008 → two thousand and eight2025 → twenty twenty-five6. 表示电话号码876-5432 → eight seven six, five four three two四、易错点总结1、hundred/thousand/million 在具体数字后不加s: three hundred(300) three hundreds2、表示概数时加s和of: hundreds of people(数百人) hundred of people3、21-99之间要加连字符(-): fifty-five(55) fifty five4、年龄、年代用复数形式:in his twenties(他二十多岁时)in the 1990s(20世纪90年代)5、基数词作定语时用单数:a five-year plan(五年计划)a two-hour meeting(两小时的会议)1.The_________ Winter Olympic Games will be held in Beijing in 2022, and there will be______ events(项目) in the Games.A.Twenty-four; fifteenth B.Twentieth-four; fifteenC.Twentieth-fourth; fifteenth D.Twenty-fourth; fifteen2. There are more than two____ students in Rose Garden School.A.thousands B.housands of C.thousand D.thoudsand of3. of people come to the New York City Lost and Found Office every day.A.Hundred B.Two hundred C.Hundreds D.Two hundreds4.Have you ever been to the Great wall Every year tourists visit it.A.million B.millions C.million of D.millions of5. girls took part in the Super Girl competition, but only few of them succeeded.A.One million of B.Thousands and millionsC.Millions of D.Two millions6. As the capital of China, Beijing has a history of more than ____ years.A.four thousand B.four thousandsC.four thousand of D.four thousands of7.—"Food Safety" has become one of the hottest topics recently.—Yeah, it receives Internet hits a day.A.thousands B.thousands of C.thousand D.hundreds8. Mozart wrote____ beautiful pieces of music for the classical orchestra.A.hundreds of B.two hundreds C.hundred of9.I'm interested in history. of the books on my bookcase about history.A.Three fifth;are B.Three fifths;areC.Three fifth;is D.Three fifths;is10.________ is said that ________ of visitors visit the Great Wall every year.A.That; thousand B.It; thousandsC.This; thousands D.It; thousand11. —Amy, can you read the number 3,057,018 —Yes, I can. It's ____.A.three million, and fifty-seven thousand, eighteenB.three million, and fifty-seven thousands and eighteenC.three million, fifty-seven thousand and eighteenD.three millions, and fifty-seven thousand, and eighteen12.The road is over __________ metres long.A.six hundred and fifty—twoB.six hundreds and fifty—twoC.six hundred, fifty— two13.There are ________ books on the desk and the ________ book is about the history of the Eiffel Tower.A.five; five B.fifth; fifth C.five; fifth D.fifth; five14.Our school is so famous(著名) that ________ people come and visit it every term.A.hundred B.hundreds C.hundred of D.hundreds of15.This cinema can offer seats to audience.A.thousand B.thousands C.thousand of D.thousands of16.There are five ____students in Simon's school. About two _____them are girls.A.thousand; thousand of B.thousands; thousand ofC.thousands; thousands of D.thousand; thousands of17.About Asians came to Europe to learn modern science last year.A.thousands B.thousands ofC.eight thousand D.eight thousand of18.— How many years has life been on earth — ______ years, I think.A.5 millions B.5 millions of C.Million of D.Millions of19.Can you write the number eighty-five thousand six hundred and twenty-six A.85, 662 B.85, 626 C.58, 662 D.58, 62620.________ people visit the Great Wall every day.A.Hundred of B.Hundreds ofC.Two thousands of D.Thousand of21.There are more than _________ students in their school.A.thousands B.three thousandsC.thousand of D.three thousand22.___________people come to Guilin for a visit these days.A.Million of B.Million C.Millions D.Millions of23.There are teachers in our school and most of them are women teachers.A.hundreds of B.hundred of C.hundreds D.five hundreds24. There are ____ floors(层) in the store and I want to go to the floor.A.five; fourth B.fifth; fourth C.five; four25.Basketball is so exciting that _____ people play it for fun.A.million B.two millions C.million of D.millions of26.—How many students are there in your school —About .A.eight hundreds B.eight hundredC.eight hundred of D.eight hundreds of27.The environment here becomes better and better. ______ birds are coming back.A.Thousands of B.Thousand of C.Thousands D.Thousand28. students in Grade Seven will take a big exam in May.A.Eight hundreds B.Hundreds of C.Eight hundred of29. He has ____daughters,and Alice is his ____ daughter.A.two;two B.second;two C.two;second30.There are ________________ months in a year. My birthday is in the ________________ month.A.twelve; twelve B.twelfth; twelfthC.twelve; twelfth D.twelfth; twelve31.There are ____ visitors to the wetland park, and the number is becoming ______ now.A.hundred of; larger and larger B.hundred of f; more and moreC.hundreds of; larger and larger D.hundreds of; more and more32.—They planted over ten ________ trees near here.—No wonder (难怪) the air pollution is becoming less and less serious.A.hundred B.hundreds C.hundreds of33.—Enshi is becoming a popular tourist destination now.—I think so.__________people come here every summer vacation.( )A.Hundreds and thousands ofB.Hundred and thousand ofC.Hundreds and thousands34.Every year,______people come to the Ocean Park to watch the dolphin show.A.millions B.Five millions C.millions of35.There are ______ students in our school.A.three thousands B.three thousands ofC.three thousand of D.three thousand36.—____________ does it take her to get to school —It takes her about _____ minutes.A.How far, twenty-five B.How long, twenty-fiveC.How far, twenty five D.How long, twenty five37.Tim likes collecting coins, and he's got ______________ them.A.million of B.millions ofC.two million of D.two millions of38.— people has lost their lives because of COVID—19.—That's a disaster for humans.A.Thousands B.Thousands of C.Several thousands39. There were about five ____ people watching the Olympic Games, and two thirds of them are from foreign countries.A.million B.millions C.million of D.millions of40.The machine can work _____than that one.A.hundred of times faster B.a hundred time fasterC.hundred times faster D.hundreds of times faster41.I have two books, and Jenny has five books. We have ________ booksin total (一共).A.six B.seven C.eight D.nine42.— What's two and _______ — It's nine.A.three B.five C.seven43.The environment here becomes better and better __________ birds are coming back.A.Thousands of B.Thousand of C.Thousands44. There are more than ____ books in our school library.A.two thousands B.thousand of C.thousands of D.two thousand45.During the Tomb-sweeping Festival(清明节), ________people come back to their hometown to show respect to their ancestors(祖先) and family members.A.hundreds of B.hundred ofC.five hundreds D.five hundreds of46.___________ people went to the concert last week.A.Hundreds B.Three millionsC.Three millions of D.Millions of47.-- Where were you born, Michael -- I was born in a small village with only three people.A.hundred B.hundreds C.hundreds of48.There are ______ floors in the building and my home is on the ______ floor.A.twenty; fifteenth B.twenty; fifteenC.twentieth; fifteen D.twentieth; fifteenth49.__________ of students are in the room and nine ________ of them are girls.A.Hundreds, hundreds B.Hundred, hundredC.Hundreds, hundred D.Hundred, hundreds50. The old man has donated ____ dollars to charities.A.thousand B.thousands of C.thousand of参考答案及试题解析1.D【解析】句意:第24届冬季奥运会将于2022年在北京举行,届时将有15个项目。Twenty-four二十四;Twenty-fourth第二十四;fifteenth第十五;fifteen十五。根据前半句中“Winter Olympic Games”可知,此处是要表述第几届冬奥会,第一空应使用序数词,B、C两项中序数词书写不正确,故排除;根据后半句中events可知,此处需要基数词表示数量,结合选项可知第二空使用fifteen。故答案选D。【点评】考查序数词和基数词,理解句意。2.C【解析】句意:玫瑰花园学校有两千多名学生。基数词+thousand,几千,thousands of,固定搭配,数以千计的,根据基数词two可知是two thousand,两千,故选C。【点评】考查数词,注意识记基数词+thousand的用法。3.C【解析】句意:成百上千的人每天来纽约市失物招领办公室。表达确切数字时用基数词+hundred;表达非确切数字用hundreds of,成百上千的......;前面没有确切数字,根据题目中的of,可知用hundreds of,故选C。【点评】考查数学词表达,注意平时识记,理解句意。4.D【解析】句意:你到过长城吗?每年数以百万计的游客参观它。millions of数以百万计的,固定结构,故选D。【点评】考查数词的用法。5.C【解析】英语中数词表示概数时,后面加s,和介词of搭配使用。用原形时表示具体数字和数词搭配使用。句意:成千上万的女生参加超级女生比赛,但是他们中只有几个能够成功。结合语境可知本句中表示的是概数,故选C.【点评】英语中关于hundred、thousand和million三个数词的用法只需要记住一个原则就行。即;前有数词则不加s,加s必加of。6.A【解析】句意:作为中国的首都,北京有四千多年的历史。结合选项可知,①当具体的数词修饰thousand时,用单数,不加of;②当thousand后面跟有介词of时,必须加上s,前面不能有具体数字,of后面跟复数名词。故选:A。【点评】考查数词的表达。充分理解句子的含义,找到解题的依据,根据关键词,注意识记thousand的特殊用法。7.B【解析】句意:——食品安全已经成为最近最热的话题之一。——是的,它一天接受成千上万的点击率。表示确切数字时用基数词+hundred/thousand;表示非确切数字时用hundreds/thousands of,固定搭配。句中没有确切数字,所以用hundreds/thousands of,故选B。【点评】考查数学词的表达,注意平时识记确切数字和非确切数字的表达。8.A【解析】句意:莫扎特为古典乐队写了数百首美丽的音乐。在英语中,当"hundred"前面有具体的数字时,我们通常使用它的单数形式,并且后面不需要加"of"。然而,当"hundred"前面没有具体的数字时,我们需要使用"hundreds of"来表示"数以百计的"。在这道题目中,我们可以看到"hundred"前面没有具体的数字,因此我们需要使用"hundreds of",故答案为A。【点评】考查英语中数词的使用规则。注意确切数量与不确切数量的表达方式。9.B【解析】句意:我对历史十分感兴趣,我书架上四分之三的书都是有关于历史的。分数的表达方式通常为基数词表示分子,序数词表示分母,当基数词大于一时,序数词要用复数。五分之三是three fifths。五分之三的书显然不是一本,be动词用are,故选B。【点评】考查分数表示方法和主谓一致。10.B【解析】句意:据说每年有成千上万的游客参观长城。空一,it is said,固定搭配,据说,it做形式主语,that是指示代词,那个,空二,thousands of,固定搭配,数以千计的,故选B。【点评】考查代词辨析,注意识记thousands of,it is said的用法。11.C【解析】句意:——艾米,你会读3057018这个数字吗?——是的,我会。它是三百万,五万七千零一八。数字在读时,从数字的右端向左端数起,每三位数加一个逗号","。从右开始,第一个","前的数字后添加thousand;第二个", "前面的数字后添加million;第三个", "前的数字后添加billion。百位与十位之间加and。故3,057,018读作:three million, fifty-seven thousand and eighteen。故选C。【点评】考查数字的读法。注意牢记数字的读法规则。12.A【解析】句意:马路超长过了652米。hundred,百,前有具体的数词修饰时,用其单数形式,故排除B,且百位和十位之间用and连接,故选A。【点评】考查数字的表达。注意句子涉及到数字的表达的用法。13.C【解析】句意:有5本书在桌子上,并且第五本是关于埃菲尔铁塔的历史。复数books前应用基数词five,排除BD;定冠词the后跟序数词,排除A;故选C。【点评】考查基数词和序数词的用法。14.D【解析】句意:我们的学校很著名每个学期有……人来并参观。hundreds of成百上千,故选D。【点评】考查数词短语的应用。15.D【解析】句意:这家电影院能为观众提供数成千上万个座位。表示确定数量要用thousand 的单数,不能与介词of 连用;表示不确定数量时,要用复数形式,同时要在其后加介词of,thousands of,后接可数名词复数。【点评】考查数词thousand的用法。注意表示确定数量与不确定数量的用法。16.A【解析】句意:在西蒙的学校有5000个学生,在他们当中大约2000个是女生。thousand千,与具体数字连用时,thousand后不加s,根据two,二,可知此处thousand用单数,故选A。【点评】考查数词用法。注意thousand和基数词连用不能用复数结构。17.C【解析】句意: 去年大约有八千个亚洲人来到欧洲学习现代科学。thousand千,前面有基数词时,单词后面不加s,后面有of时,单词后面要加s,thousands of数以千计的,固定短语,前面不能用约数词about,故排除B;A和D结构错误,故排除;故选C。【点评】考查基数词。注意thousand的用法。18.D【解析】句意:--地球上有生命已经有多少年了?--几百万年了。 Million “百万”,其用法是:和数词连用,表示确定的数量,后不加s,也不加of;Millions of固定用法,表示数百万……,必须加s。根据题意,故选D。【点评】考查数词,以及短语Millions of。19.B【解析】句意:你能够书数字85623吗?eighty-five thousand six hundred and twenty-six 是数字85626的英文表达,故答案是B。【点评】考查数词的读法,注意英文中大数的读法。20.B【解析】句意:每天都有数百人参观长城。当数词hundred,thousand,million等不与具体数字连用,而是表示不确定的泛指数时,不仅要用复数,而且后面要接介词of,然后才能接名词。故正确答案为B。【点评】本题考查数词的用法。21.D【解析】句意:在他们的学校有超过三千名的学生。thousand千,是一个数词,与基数词连用,表示具体数目时,不用复数形式;或者构成短语thousands of,意思是成千的。根据句意可知应选D。22.D【解析】句意:这些天数以百万计的人们来到桂林参观。固定词组,millions of数以百万计的,表示概数,注意前面不能用具体数字,故选D。【点评】考查数词表示,掌握词组millions of数以百万计的,后接名词复数的用法。23.A【解析】句意: 我们学校有数以百计的教师,大部分是女教师。hundred百,当前面有大于一的基数词时,后面不加s;当前面没有基数词,后面有介词of时,单词后面要加s,hundreds of数以百计的,固定短语;B,C和D格式错误,故选A。【点评】考查固定短语和基数词的用法。注意固定短语hundreds of。24.A【解析】句意:商店里有五层楼,我想去第四层。five和four是基数词,空一,floors是名词复数,基数词修饰名词复数。fifth和fourth是序数词,空二,根据the,可知定冠词修饰序数词,表示第几层楼,故用fourth,故选A。【点评】考查基数词和序数词,注意识记基数词修饰名词复数,序数词修饰楼层的用法。25.D【解析】句意:篮球如此激动人心以至于成千上万的人打篮球玩。for fun 为了消遣;million 百万,有数词修饰时不加s,后不与介词of连用。前面没有数词时,million与of连用,后加s。millions of成千上万的。故选D。【点评】本题考查数词million的用法,前面有基数词时,它不应该变复数。表示数百万时是固定搭配,变复数形式并且加of。需要掌握这种用法。26.B【解析】句意:——在你的学校里有多少学生?——大约八百个。单位,hundred,前接基数词时应用单数形式,八百,故选B。【点评】考查整数表达,注意单位hundred前接基数词时应用单数形式,hundred后接of时应用复数形式。27.A【解析】句意:这里的环境越来越好。成千上万的鸟儿正飞回来。thousands of成千上万,表示约数。故选A。【点评】考查固定搭配thousands of。28.B【解析】句意:五月份,数百名七年级学生将参加一场大考。确切数量常用基数词+hundred/thousand/million/billion+名词的复数形式;不确切数量常用hundreds/thousands/millions/billions + of+名词的复数形式,题目前面没有表示确切数量的单词,因此用Hundreds of,故答案选B。【点评】考查hundred的相关用法,区分确切数量和不确切数量的表达方式,有几个关键点要分清楚。确切数量必须要有基数词,且量词不能用复数形式;不确切数量的量词必须要有复数形式,且其后一定要加介词of。只要掌握好这两点,确切数量和不确切数量的问题基本解决。29.C【解析】句意:他有两个女儿,Alice是他的二女儿。two,基数词,二,修饰可数名词复数;second,序数词,第二,修饰可数名词单数,表示次序;第一空修饰名词复数daughters,因此用基数词 two;第二空修饰名词单数daughter,因此用序数词,故选C。【点评】考查数词的表达方式,注意识记数字"2"的基数词和序数词的用法。30.C【解析】句意: 一年有12个月,我的生日在第12个月。名词复数months前是基数词,twelve是基数词,the定冠词后是序数词,twelfth是序数词,故选C。【点评】考查数词,注意名词复数前是基数词,定冠词后是序数词的用法。31.C【解析】句意:湿地公园有数以千计的游客,并且游客数量越来越大。表示确切数字,hundred不用复数,也不与of连用,表示概数必须用复数,并且连用of。说number的多少常用large和small,所以选C。【点评】考查短语hundreds of。32.A【解析】句意:——他们在这附近种了一千多棵树。——难怪空气污染越来越不严重了。hundred“百”,当前面有具体数字时,hundred不加s;当其后有of时,hundred加s。空前有ten,所以hundred不加s,故选A。【点评】考查整数表达。注意识记hundred的用法。33.A【解析】句意:——恩施现在正在变成一个受欢迎的旅游胜地。——我也这么认为。成千上万的人每个暑假都来这里。hundred和thousand前面没有具体数词时,需要与of连用,且表示不具体、不准确的数目时,词尾须加﹣s.故答案为A。【点评】考查固定搭配。掌握固定搭配的意义和用法。34.C【解析】句意:每年,数以百万计的人来到海洋公园观看海豚表演。固定搭配millions of,数百万的;million一般不用复数形式;故选C。【点评】本题考查millions of的用法。35.D【解析】句意:我们学校有三千名学生。thousand的用法是:数词+thousand;thousands of。所以可以排除ABC,故答案为D。【点评】考查数词的用法,掌握hundred、thousand、million的基本构成。36.B【解析】句意:她到学校花多长时间?大约25分钟。根据句意及题干分析第一空是问多长时间,所以how long;第二空25的表达是twenty-five,故选B。37.B【解析】句意:Tim喜欢收集硬币,他已经得到了它们中的数百万。表示确切数字时用基数词+million,几百万;表示非确切数字时用millions of,数百万的,固定搭配,故选B。【点评】考查数学词表达,注意平时识记确切数字与非确切数字的表达。38.B【解析】句意:——成千上万的人因为COVID-19而丧生。——这对人类来说是一场灾难。固定词组,thousands of成千上万的,several几个的,后接thousands of或者thousand,故选B。【点评】考查数词,理解英语中概数表达方法,注意识记thousands of的词义和用法。39.A【解析】句意:大约有500万人观看了奥运会,其中三分之二来自外国。milion前面要用具体数字,不用复数,即"数字+million+名词复数";"millions of+名词复数"表示"数百万...…",表示不确定数字,即前面不加具体数字。 此处空格前有具体数字,应用million。故选A。【点评】考查整数表达。注意识记million的用法。40.D【解析】句意:这台机器比那台机器工作快几百倍。此处表示倍数,用times“倍数”,故排除B项。hundred与of连用时,表示约数,用复数形式,hundreds of好几百。故选D。【点评】此题考查副词的倍数表达。41.B【解析】句意:我有两本书,珍妮有五本书。我们一共有七本书。A 六;B 七;C 八;D 九。根据题干中的in total提示可知,我们两个一共有2+5=7本书,故选B。【点评】考查基数词的基本含义及拼写。注意正确理解句意及关键词。42.C【解析】句意:——2+7等于多少?——等于九。考查基数词,three 三;five五;seven七。根据句意,可知这里“and”应该是+的意思,根据后面回答等于九,数学知识可知2+7=9。故答案为C。【点评】考查基数词。注意识记数词的用法。43.A【解析】句意:这里的环境变得越来越好,成千上万只鸟儿将会回来。thousands of,成千上万,固定搭配,选A。【点评】考查整数的表达。注意句子涉及到thousands of的用法。44.D【解析】句意: 我们学校的图书馆里有两千多本书。 A:错误形式,基数词two后应用单数形式thousand;B:错误形式,有介词of时应用复数形式thousands; C:成千上万的(宽泛的);D:两千(具体的)。根据 more than "多于",可知应是具体的数字,应用短语 two thousand "两千"。故选D。【点评】考查可数名词单数。注意熟记数次thousand,hundred前面有基数词时,应用单数形式。后面有介词of时,用复数形式。45.A【解析】句意:清明节期间,数百人回到家乡,向先祖和家人表示敬意。hundred的前面有具体的数字时,hundred要用单数形式,排除C,D;当hundred的前面没有具体的数字,如果后面修饰名词,则必须有of连用,且hundred要用复数形式,故答案选A。【点评】考查固定短语hundreds of+可数名词复数的用法。46.D【解析】句意:上周成百万的人们去听了音乐会。数词表示概数时,要用复数加of,表示确数时,和数字连用时,要用单数,排除A,B和C,millions of:成百万的,故选D。【点评】考查数词的用法,牢记表示确数和概数的不同用法。47.A【解析】考查hundred的用法。hundred前面有具体数字时用原形;前面没有具体数字时用复数形式,且其后需加of。由three可知,应用hundred。故选A。【点评】考查数词的用法。48.A【解析】句意:这栋建筑物有二十层,我们家在第十五层上。此题考查基数词和序数词,根据句意,应选A。49.C【解析】句意:数百学生在房间里,而且其中九百个是学生。前空表示虚指,hundred用复数;后空表示实指,hundred用单数。故选C。【点评】英语中hundred, thousand, million, billion表示虚指时,后面跟介词of,它们要用复数。表示具体几百,几千时,它们前面有数词,它们用单数形式。50.B【解析】句意:这位老人向慈善机构捐赠了数千美元。thousand,千。thousand表示数量,数字时:基数词+ thousand;表示模糊数量: thousands of +名词。根据题干,空格前没有具体数字,应为模糊的数量,故选B。【点评】考查整数表达。注意识记thousand的用法。21世纪教育网(www.21cnjy.com) 展开更多...... 收起↑ 资源预览