专题07 数词重难点讲练-【暑假自学课】2024年新八年级英语暑假提升精品讲义（牛津上海版）

专题07 数词重难点讲练 核心考点聚焦 1 1.1.基数词和序数词 1 1.2.数词的用法 1 1.3.确切数目和大约数目的表示法 2 当堂限时检测 2 课后提升专练 4 参考答案： 7 核心考点聚焦 1.1.基数词和序数词 基数词表示数量，序数词表示顺序。序数词由基数词变化而成，具体构成如下： 构成 例句 第一、第二、第三需特殊记忆。 first 第一 second 第二 third 第三 4-19的序数词是由其相对应的基数词后面加－th构成。 eleven→eleventh 第十一 thirteen→thirteenth 第十三 有4个词拼写不规则：fifth,eighth,ninth,twelfth. 整十的序数词由其对应的基数词变词尾字母y为ie,再加－th构成。（注意：ten的序数词为tenth.) twenty→twentieth 第二十 fifty→fiftieth第五十 表示“第几十几”时，只将个位数变为序数词，十位数仍用基数词。 thirty-one→thirty-first 第三十一 fifty-six→fifty-sixth 第五十六 1.2.数词的用法 内容 用法 例子 分数表示法 分子用基数词，分母用序数词。分子大于1时，作分母的序数词需用复数形式。单词之间可有连字符，也可以没有。如果是带分数，用and连接整数和分数即可。 1/3:one-third 年龄表示法 用“in+one's+整十的基数词的复数形式”表示“在某人几十多岁时”。表示一个人具体的岁数时，可用“at the age of+基数词”表示。 My grandmother is now in her eighties.我奶奶现在80多岁了。 编号表示法 ①用基数词编号时，用“名词＋基数词”表示。 ②用序数词编号时，用“the+序数词＋名词”表示。 502房间：Room 502 第七页：the seventh page 1.3.确切数目和大约数目的表示法 类别 表达法 例子 确切数目 当 hundred,thousand,million等前面有具体数字或有many,several,few等修饰时，用其单数形式，不与of连用。此时表达确切数目。 I make nine hundred dollars a week.我一周挣900美元。 约略数目 当 hundred,thousand,million等与of连用时，要用其复数形式，其前不能加其他表示数量的词语。此时表达大约的数字概念。 There are thousands of things I want to do.我有很多事情想做。 当堂限时检测 1．Fifty plus four and the answer divided by 2 equals________. A．14 B．22 C．27 D．10 2．Where can you find ________ beautiful flowers and trees all year round? A．hundreds of B．three hundreds of C．hundred of D．three hundred of 3．Though she’s ______ woman, she’s very healthy. A．a eighty-year-old B．an eighty years old C．an eighty-year-old D．an eighty-years-old 4．Thousands of young people went to the countryside to work with the farmers ________. A．in the 1970 B．in 1970s C．in the 1970s’ D．in the 1970s 5．________ of the students in our class will take part in the singing competition. A．Two-thirds B．Two-third C．Second-thirds D．Second-third 6．—There are sixty students in our class and two thirds of them like science. —Oh, ________ of them like science. That’s great. A．twenty B．thirty C．forty D．fifty 7．— If a=4, b=5, what’s the answer to the question “a+2ab+1=?”?       — _______. A．Forty fifth B．Forty five C．Twenty three D．One hundred and twenty one 8．In the early ________ century, the first trains began to carry passengers. A．nineteen B．ninth C．nineteenth D．nine 9．Yesterday was her ________ birthday and she had a birthday party. A．twelve B．twelfth C．the twelve D．the twelfth 10．________ people are his fans. A．Thousands of B．Thousands C．Two thousands D．Two thousands of 11．The building has ________ floors and she lives on the ________ floor with her family. A．twelve; twelve B．twelfth; twelfth C．twelve; twelfth D．twelfth; twelve 12．________ of the students are from Beijing, but only a few _________ the Great Wall. A．Hundreds; have been to B．Two hundred; have been to C．Two hundreds; have gone to D．Hundreds; have gone to 13．________ of the students are from Wuxi, but only a few ________ Yuantouzhu. A．Hundreds; have been to B．Two hundred; have been to C．Two hundreds; have gone to D．Hundreds; have gone to 14．The ice and snow in Harbin are beautiful, so every winter ____________ tourists come here. A．five million of B．millions of C．million of D．five millions 15．________ people visit the Potala Palace during the May Day holiday. A．Thousands of B．Thousand of C．Thousands D．Thousand 16．The noodle was ________ and broke the world records as the longest handmade noodle. A．1,704-meter-long B．1,704 meters long C．1,704 meter long D．1,704-meters long 17．It cost them more than ________ dollars to complete the project. A．2 billion B．2 billions C．2 billion of D．billion of 18．The population of China is about 1,411,750,000. That is ________. A．One billion, four hundred and eleven million, seven hundred and fifty thousand B．One billion, and four hundred eleven, seven hundred and fifty thousand C．One billion, four hundred and eleven million, and seven hundred fifty thousand D．One billion, four hundred eleven million, and seven hundred and fifty thousand 19．To finish the work better, we need five other workers. A．more five B．another five C．the fifth D．another 20．Over ________ tourists paid a visit to Shanghai Disneyland last year. A．million of B．six million C．six millions D．six millions of 21．People in this small village plant ________ trees every year to improve the living environment. A．hundreds of B．five hundreds C．five hundreds of D．hundred of 22．There are ______ students in the school, but only ______ students are girls. A．hundred of; two hundred B．hundreds of; two hundreds C．hundred of; two hundreds D．hundreds of; two hundred 23．—How many birds can you see in the tree? —I can see ________ birds there. A．hundred B．hundreds C．three hundreds D．hundreds of 24．This is a fantastic place. Some people even travel ________ miles to get here. A．hundred of B．hundred C．hundreds of D．hundreds 25．You can see ______ stars shining in the summer sky at night when the weather is fine. A．thousands B．two thousand of C．hundreds of D．hundred 26．I’m going to study aboard for ______. A．a year and two B．two and a year C．a year or two D．two and year 27．— How much is 25 ______ 4?  —It’s 100. A．plus B．multiplied by C．minus D．divided by 28．How to read (21-9)×4 ＝48? A．Twenty-one minus nine multiply by four is forty-eight. B．Four multiplied by twenty-one minus nine equals forty-eight. C．Twenty-one minus nine multiplied by four equals forty-eight. D．Four divided by twenty-one minus by nine is forty-eight. 29．It’s said that ________ of the water around the world ________ polluted. A．two third; is B．two thirds; is C．two thirds; are D．two third; are 30．—Can you work out ________ question on today’s homework? —Of course. Ten plus ten is surely ________. A．the fifth; twenty B．five; twenty C．the fifth; twentieth D．five; twentieth 课后提升专练 31．Dr. Sheldrake did the simple experiment with ________ children. A．hundred B．hundreds C．hundred of D．hundreds of 32．I am going to send my mother a beautiful Gambiered Canton Gauze (香云纱)cheongsam (旗袍) for her ________ birthday. A．the fortieth B．forty C．fortieth D．forties 33．The number of the fans going to this concert is about three ________. And ________ of them are girls. A．thousand; two third B．thousands; two third C．thousand; two thirds D．thousands; two thirds 34．We shared（分享）a nice cake ________ her sister’s ________ birthday. A．on; nine B．in; ninth C．at; nine D．on; ninth 35．—Which sweater is yours? —The ________ one is ________. A．third; mine B．five; my C．sixth; me D．two; mine 36．China is ________ biggest country in area(在面积上)in the world. A．the first B．the second C．the third D．the fourth 37．—How was your weekend? —Great! It was my grandfather’s ________ birthday. We enjoyed ourselves. A．seventy B．seventieth C．seventeen D．seventeenth 38．On my ________ birthday, my mum gave me a pen as a gift. A．the tenth B．ten C．tenth D．the ten 39．About ________ of the Earth is covered with water. A．two thirds B．second three C．a quarter D．three fifth 40．I think the ________ lesson is more difficult than the ________. A．twelfth；twentith B．the twelve；twentieth C．twelve；twentieth D．twelfth；twentieth 41．—Excuse me, where is Mrs. Green’s office? —It’s on ________ floor. A．seven B．the seven C．the seventh D．seventh 42．Next month, Alex will have his ________ birthday party. A．twenty B．twentieth C．the twenty D．the twentieth 43．—How do you like the community? —Wonderful! _________ of the land _________ covered with trees and grass. A．Two fifths; is B．Two fifth; is C．Two fifths; are D．Two fifth; are 44．Tomorrow is my brother’s ________ birthday. He has invited many workmates (同事) to his party. A．twelve B．twelfth C．twenty D．twentieth 45．________ of the teachers in our school ________ women. A．Two fifth; is B．Two fifth; are C．Two fifths; is D．Two fifths; are 46．______ of the students in our class ______ going to summer camp in Beijing next week. A．Two fifths; is B．Second fifths; are C．Second fifths; is D．Two fifths; are 47．______ of the land in our city _____ covered with trees and grass. A．Two fifth, is B．Two fifth, are C．Two fifths, is D．Two fifths, are 48．To be honest, I couldn’t carry on a _________ conversation in English though I could read passages after _________ of study. A．three-minute; six years B．three minutes; six-year C．three minutes; six years D．three minutes’, six-year 49．The book is very popular, about 200 ________ have been sold out. A．million copy B．million copies C．millions copy D．millions copies 50．We don’t have enough English teachers in our school. We need _______ men teachers. A．another B．two others C．more two D．two more 51．About three _________ students took part in the sports meeting. A．thousands B．thousand C．thousand of D．thousands of 52．There are more than _________ workers in our factory. A．thousands of B．two thousands of C．two thousands D．two thousand 53．There are more than ________ people in this city. A．two millions of B．two million C．million of D．two millions 54．People plant ________ trees on Arbor Day every year. A．hundred B．hundreds of C．thousand D．thousands 55．There may be ________ stars in the Milky Way. A．billions B．billion C．billion of D．billions of 56．Ten years ago, there were ________ trees on the hill and different kinds of animals lived there happily. A．thousands of B．two thousands C．two thousand of D．thousand of 57．Grandma sent Johnny some money for his birthday. Johnny spent all of it in five stores. In each store, he spent $ 1.00 more than half of what he had when he came in. How much money did he get from his grandma? A．$25 B．$30 C．$46 D．$62 58．Two men, starting at the same point, walk in opposite directions for 4 meters, turn left and walk another 3 meters. What is the distance between them? A．6 meters B．10 meters C．12.5 meters D．14 meters 59．—How much is 90________3? — It's 30. A．divide B．multiply by C．divided by D．multiplied by 60．Which sentence is correct? A．Multiplied 5 by 6. B．Subtract 4 to 9. C．Plus 3 and 9. D．Add 2 and 8 to make 10. 参考答案： 1．C 【详解】句意：50加4，答案除以2等于27。 考查数字运算。50+4=54；54/2=27；故选C。 2．A 【详解】句意：一年到头，你能在哪里找到数以百计的美丽的花和树木？ 考查hundred的用法。表示具体的数量用“基数词+hundred”；表示概数用“hundreds of”。结合选项可知，只有选项A符合题意，故选A。 3．C 【详解】句意：虽然她是一个八十岁的妇人，但她很健康。 考查数词的用法。“基数词-名词单数-形容词”构成复合形容词，中间用连字符连接；eighty以元音音素开头，不定冠词用an；因此“一个八十岁的妇人”的正确表达为an eighty-year-old woman。故选C。 4．D 【详解】句意：20世纪70年代，成千上万的年轻人下乡和农民一起工作。 考查年代的表达。表示“在某一年”应用“in+年份”；表示“在某个世纪的几十年代”用“in the+年份的复数”。结合选项，“in the 1970s”符合语境。故选D。 5．A 【详解】句意：我们班里三分之二的学生将参加歌唱比赛。 考查分数表达法。分子用基数词，分母用序数词，当分子基数词大于一，分母序数词用复数形式。本题三分之二的正确表达是two-thirds。故选A。 6．C 【详解】句意：——我们班有六十名学生，其中三分之二的学生喜欢科学。——哦，他们中有四十个人喜欢科学。太好了。 考查数字运算。twenty二十；thirty三十；forty四十；fifty五十。由“There are sixty students in our class and two thirds of them like science”可知，六十的三分之二是四十。故选C。 7．B 【详解】句意：——如果a=4, b=5，问题a+2ab+1的答案是多少？——45。 考查生活常识。根据公式可知是4+2×4×5=45，用基数词表示；故选B。 8．C 【详解】句意：在19世纪早期，第一列火车开始载客。 考查序数词。nineteen十九；ninth第九；nineteenth第十九；nine九。此处是表示“……世纪”，应用序数词，结合常识可知第一列火车开始载客应该是在19世纪，故选C。 9．B 【详解】句意：昨天是她12岁的生日，她举行了一场生日聚会。 考查序数词的用法。twelve十二个；twelfth第十二个（的）；the twelve十二个；the twelfth第十二个（的）。 表达“第几岁的生日”其数词应用序数词。序数词前有形容词性物主代词修饰时，不再用定冠词the修饰。故选B。 10．A 【详解】句意：成千上万的人是他的粉丝。 考查数词的用法。thousand“千”，表示具体数字时，前面有基数词修饰，且thousand不用复数；表示概数时，thousand用复数，且与of连用，构成短语thousands of“成千上万的”。故选A。 11．C 【详解】句意：这栋楼有12层，她和她的家人住在第12层。 考查数词和序数词。twelve十二，基数词；twelfth第十二，序数词。第一空表示数量，用基数词；第二空表示顺序，用序数词，故选C。 12．B 【详解】句意：200名学生来自北京，但只有少数人去过长城。 考查hundred和现在完成时。have been to去过（人已回来）；have gone to去了（人未回来）。根据“of the students”可知，指这群学生中的200人来自北京，hundred前有数字，不需要加s，因此第一空two hundred符合句意；再者根据“the Great Wall”可知，此处指去过长城的人很少，have been to符合句意，故选B。 13．B 【详解】句意：其中200名学生来自无锡，但只有少数人去过鼋头渚。 考查hundred和现在完成时。have been to去过（人已回来）；have gone to去了（人未回来）。根据第一个空空后的“of the students”并结合选项可知，此处指这群学生中的200人来自无锡，hundred前有数字，不需要加s；根据“only a few…Yuantouzhu”的句意可知，此处指去过鼋头渚。故选B。 14．B 【详解】句意：哈尔滨的冰雪很美，因此每年冬季几百万游客来这里。 考查数词的用法。当million与数词连用时，million不用复数，后面不接of；当million与of连用时，要用millions。故选B。 15．A 【详解】句意：五一假期有成千上万人参观布达拉宫。 考查thousand概数表达。表示具体数字时用基数词+thousand+名词，表示概数时用thousands of+名词。分析句子可知，空前无数字，用Thousands of表示“成千上万的”。故选A。 16．B 【详解】句意：这条面条长达1704米，打破了世界上最长的手工面条的纪录。 考查数词的表达。分析选项可知，C和D表达错误，C中的meter应加s，D中的meter不加s，且meter和long之间加连字符。A项是复合形容词，表示“1704米长的”，在句中作定语。分析句子可知，此处是作表语，1,704 meters long“1704米长”，在句中作表语。故选B。 17．A 【详解】句意：他们花了20多亿美元来完成这个项目。 考查数词的用法。billion与of连用时，应用复数形式，表示概数；若前有基数词修饰，则用单数形式，表示确数。根据“It cost them more than … dollars to complete the project.”可知，此处表示“20亿美元”。故选A。 18．A 【详解】句意：中国的人口约为1,411,750,000。也就是十四亿一千一百七十五万。 考查数词表达。读数字的时候从右到左，第一个三位数用thousand“千”表达，第二个三位数用million“百万”表达，第三个三位数用billion“十亿”表达，千分号处不需要用and连接。故选A。 19．B 【详解】句意：为了更好地完成这项工作，我们还需要五个工人。 考查固定搭配。more用于数词后，表示数量的增加，即表示在原有基础上又增加了若干数量。another与数词搭配时，总是要放在数词之前。five other表示“另外五个”，等同于five more或another five。B选项符合，故选B。 20．B 【详解】句意：去年，上海迪士尼乐园接待游客超过600万人次。 考查数词。million百万。million前面有具体数字时，不能加s，也不与of连用；无具体数字时要加s，并与of连用。millions of“数百万”。故选B。 21．A 【详解】句意：为了改善居住环境，每年这个小村庄的人种几百棵树。 考查数词。hundred“一百”，表示具体数时，有数词修饰，不加s，如five hundred“五百”，表示约数时，加s，如hundreds of“几百”，故选A。 22．D 【详解】句意：学校有几百名学生，但只有两百名女生。 考查数词hundred的用法。hundred“百”，表示具体的数字时，用单数形式；表示不确定的数时，要加s，且与of连用。根据“There are...students in the school, but only... students are girls.”可知，空一表示不确定的数字，因此要加s，且加of；空二结合选项可知，此处表示具体的数字“两百”，因此用单数。故选D。 23．D 【详解】句意：——你能看到树上有多少只鸟？——我能看到那里有数百只鸟。 考查数词。hundred前有基数词时，用原形，表示具体数字；前无基数词时，用hundreds of“数百”，表示概数；此处表示“数百只鸟”，用hundreds of。故选D。 24．C 【详解】句意：这是一个奇妙的地方。有些人甚至千里迢迢来到这里。 考查数词的表达。表示确切的数量，用基数词+hundred的单数形式；表示概数，用hundred的复数形式+of，此处表示的是概数，应填hundreds of，故选C。 25．C 【详解】句意：天气好的时候，你可以在夏天的夜晚看到成百上千颗星星在天空中闪烁。 考查概数表达。thousand“千”，hundred“百”，前面有具体数字时，用“数字+thousand/hundred”；前面没有数字，后面有of时，用“thousands/hundreds of”。故选C。 26．C 【详解】句意“我打算在外国学习一到两年”。a/one year or two=one or two years一年或两年。根据句意，故选C。 27．B 【详解】句意：——25乘以4是多少？——是100。 考查运算。plus加；multiplied by乘以，被乘；minus减；divided by除以。根据答语“It’s 100.”可知，应是25乘以4。故选B。 28．C 【详解】句意：（21-9）×4 ＝48怎么读？ 考查数学运算。公式中先计算括号里面的21-9，即twenty-one minus nine，然后得出的结果乘以4，A multiplied by B equals C意为“A乘以B等于C”，因此C选项符合句意。故选C。 29．B 【详解】句意：据说全世界三分之二的水被污染了。 考查分数表达法以及主谓一致。第一个空是分数，分子用基数词，分母用序数词，分子大于1，分母用复数，故三分之二的英文表达为two thirds，排除AD；当分数+of+名词作主语时，谓语动词和名词保持一致，water是不可数名词，故此处be动词用is。故选B。 30．A 【详解】句意：——你能算出今天作业的第五个问题吗？ ——当然。十加十当然是二十。 考查序数词和基数词。由第一个空后的 question可知，这里是单数，用序数词，指第五个问题；第二个空表示计算的结果，用基数词。故选A。 31．D 【详解】句意：谢尔德雷克博士用数百名儿童做了这个简单的实验。 考查大数的表达。hundred表示“百”，当前面有具体的数字时，hundred用原形；当前面没有具体的数字，且与of连用时，hundred要变成hundreds。结合题干可知，此处没有出现具体的数字，所以空格处应用短语hundreds of“数百”。故选D。 32．C 【详解】句意：我要给我妈妈送一件漂亮的香云纱旗袍，作为她四十岁生日的礼物。 考查序数词。the fortieth第四十；forty四十；fortieth第四十；forties四十几。根据“for her…birthday”可知，是指第四十岁生日，应用序数词形式，空格前有形容词性物主代词，所以不加定冠词，故选C。 33．C 【详解】句意：去听这场音乐会的歌迷大约有三千人，其中三分之二是女孩。 考查thousand和分数的表达。thousand被具体的基数词修饰时，用单数形式，且不与of连用，表示具体的数词，空前有three，所以第一空填thousand；分数的表达：分子（基数词）/分母（序数词），当分子大于1时，分母中的序数词要变为复数，所以三分之二则表达为“two thirds”，故选C。 34．D 【详解】句意：在她妹妹的九岁生日时，我们分享了一个精美的蛋糕。 考查介词和序数词。根据在具体某一天用介词on，用于生日是具体某天，所以第一空用on；某人几岁生日，应是序数词，所以第二空用ninth。故选D。 35．A 【详解】句意：——哪件毛衣是你的？——第三件是我的。 考查序数词和物主代词。第一空根据“the...one”可知，考查序数词的用法：the+序数词，因此用序数词；第二空根据空格可知，需填名词作表语，因此用名词性物主代词mine“我的”。故选A。 36．C 【详解】句意：中国是世界上面积第三大的国家。 考查序数词。the first第一；the second第二；the third第三；the fourth第四。根据“China is...biggest country in area(在面积上) in the world.”及常识可知，中国国土面积在世界上是第三大的。故选C。 37．B 【详解】句意：——你的周末怎么样？——太棒了！那天是我祖父的70岁生日。我们玩得很开心。 考查数词辨析。seventy70，表数量；seventieth第70个，表顺序；seventeen17，表数量；seventeenth第17个，表顺序。根据“It was my grandfather’s...birthday. ”可知，此处是祖父的生日，应是第70个生日，表示顺序，用序数词seventieth。故选B。 38．C 【详解】句意：在我十岁生日那天，我妈妈给了我一支笔作为礼物。 考查序数词。根据语境和选项，可知是表达“在第十个生日”，应使用数字“10”序数词形式tenth，且空前有“my”的情况下，the要省略。故选C。 39．A 【详解】句意：地球的大约三分之二都是被水覆盖着。 考查数词。two thirds三分之二；a quarter四分之一。根据句意可知，本题考查分数的表达方法，分子用基数词表示，分母用序数词表示，当分子大于或等于二时，分母序数词要用复数形式；有根据常识可知，地球是三分之二都是水。故选A。 40．D 【详解】句意：我觉得第十二课比第二十课更难。 考查序数词表示顺序。twelfth第十二；the twelve十二个……，耶稣的十二个门徒；twelve十二；twentith无此词；twentieth第二十。根据“the…lesson”可知此处应用序数词twelfth表示“第十二”；第二个空前的定冠词the也说明后接序数词twentieth表示“第二十课”。故选D。 41．C 【详解】句意：——打扰一下，格林夫人的办公室在哪里？——在七楼。 考查序数词。根据“It’s on...floor.”可知，表示在第几楼应用序数词seventh，序数词前要加定冠词the。故选C。 42．B 【详解】句意：下个月，亚历克斯将举办他的二十岁生日派对。 考查序数词的用法。twenty二十，基数词；twentieth第二十，序数词。根据语境可知，“one’s+序数词+birthday”表示“某人（几）岁的生日”，空处需填序数词，表顺序，排除A和C，又因序数词前已有形容词性物主代词his，不再用冠词。故选B。 43．A 【详解】句意：——你觉得社区怎么样?——太棒了!五分之二的土地被树和草覆盖。 考查分数。分数构成：分子用基数词，分母用序数词，当分子大于1时，分母用复数形式，故第一空用Two fifths；当分数作主语时，谓语动词的数和其所代替或修饰的名词在人称和数上保持一致，“land”作土地讲时，为不可数名词，故谓语动词用单数。故选A。 44．D 【详解】句意：明天是我哥哥的二十岁生日。他邀请了许多同事参加他的聚会。 考查序数词。twelve十二；twelfth第十二；twenty二十；twentieth第二十。句中birthday是单数形式，所以不能用基数词，应用序数词形式，又根据“He has invited many workmates to his party.”可知，应是二十岁生日，故选D。 45．D 【详解】句意：我们学校五分之二的老师都是女的。 考查分数表达。在英语中，表达分数时基数词作分子，序数词作分母，当分子大于一时，分母的序数词需加“s”变为复数，因此五分之二表达为“two fifths”，排除选项A和B；当“分数+of+名词”作主语时，后面的谓语动词需跟分数后的名词的数保持一致，“teachers”是复数，因此be动词用“are”。故选D。 46．D 【详解】句意：我们班五分之二的学生下周要去北京参加夏令营。 考查分数的表达和主谓一致。分数是由基数词和序数词一起来表示的。基数词作分子，序数词作分母，除了分子是“1”以外，其他情况下序数词都要用复数形式。因此，五分之二是two fifths；“分数/百分数+of+名词”作主语，谓语动词的数由名词来定；当名词为可数名词复数时，谓语动词用复数；名词是可数名词单数或不可数名词，谓语动词用单数。主语的中心词为the students，因此谓语动词用are。故选D。 47．C 【详解】句意：我们城市五分之二的土地被树和草覆盖着。 考查分数表达以及be动词。分数的表达方法是：基数词（分子）+序数词（分母），分子超过一分母加s； 在含有分数的主语，谓语动词的单复数由of后面的名词决定。land是一个整体，看作单数，be动词应用is。故选C。 48．A 【详解】句意：老实说，尽管经过六年的学习，我可以阅读文章，但我无法用英语进行三分钟的对话。 考查复合形容词和时间段。第一个空修饰名词，用复合形容词three-minute或three minutes’，排除BC；根据“after...of study”可知此处表示时间段，用six years。故选A。 49．B 【详解】句意：这本书很受欢迎，卖了大约200百万份。根据“million”前有数量词时，不用复数，排除选项C/D；根据“200 million”可知，copy用复数。故选B。 50．D 【详解】句意：我们学校没有足够的英语老师。我们还需要两名男老师。 考查数词和代词的用法。another泛指（三者或三者以上中的）另一个；others泛指“其他人员”或“其他部分”，相当于“other+复数名词”；根据“We don’t have enough English teachers in our school.”可知老师不够，此处表示“再需要两个男老师”，another和more都有“再、又”的意思。another+数词+名词复数=数词+more+名词复数，表示“再……”。故选D。 51．B 【详解】句意：大约3000名学生参加了运动会。 考查thousand的用法。thousand前面有数字时，其后面不能加s，不加of；没有数字时，可用结构thousands of。此处空前有具体数字，用thousand。故选B。 52．D 【详解】句意：我们工厂有两千多名工人。 考查thousand的用法。表示具体的数字时用“基数词+thousand”；表示概数时用“thousands of”；more than不与thousands of连用。故选D。 53．B 【详解】句意：这座城市有200多万人口。 考查million的用法。表示确切的数量，用“基数词+million”；表示概数，用“millions of”。故选B。 54．B 【详解】句意：人们在每年的植树节种数百棵树。 考查数词的表达。hundred和thousand表示具体的数量时，用“基数词+hundred/thousand的单数形式”的结构；表示概数，用hundreds of表示“数百……”，用thousand of表示“数千……”。本句表示人们在每年的植树节种植数百棵树，综合备选项，这里应填hundreds of。故选B。 55．D 【详解】句意：银河系中可能有数十亿颗恒星。 考查billion的表达。表示确数时，用基数词+billion；表示概数时，用billions of。空前无基数词，所以用billions of，故选D。 56．A 【详解】句意：十年前，山上有成千上万的树，各种各样的动物快乐地生活在那里。 考查数词。thousand“千”，与具体数字连用时，要用单数，其后不跟of；当thousand不与具体数字连用时，表示不确定的约数，要用复数形式，后面跟of，再跟名词。故选A。 57．D 【详解】句意：奶奶在约翰尼生日时给他一些钱，约翰尼在五家商店花光了这笔钱，在每一家店里，他花去了手里钱的一半多一美元，那么他从奶奶那里得到多少钱？由题意可知，在最后一家店花去最后2美元（一半是一美元，再加一美元），倒数第二家时，手里有6美元，第三家14美元，第二家30美元，第一家时，手里有62美元，也就是数字加1再乘以2，就得出进前一家店时手里的钱了，故答案为D。 58．B 【详解】句意：两个人从同一地点出发，向相反的方向各行走4米，然后左转行走3米，他们两个人之间的距离有多远？根据句意可知，两个人之间的距离实际上就是长8米，宽6米的矩形的对角线的长度，根据勾股定理，可以算出长度是10米，故答案选B。 59．C 【详解】句意：——90除以3是多少？  ——是30。 本题考查数字的计算，在运算中如果希望用90和3得到30，只能用除法。divided by：除以；multiplied by：乘以。选项A/B/D错误。故选C。 60．D 【详解】句意：哪个句子是正确的？ 考查数学运算的英语表示。A.应该表示为5 Multiplied by 6；B.应该表示为Subtract 4 from 9 ；C.应表示为3 plus 9. 故选D。 原创精品资源学科网独家享有版权，侵权必究！6 学科网（北京）股份有限公司 $$ 专题07 数词重难点讲练 核心考点聚焦 1 1.1.基数词和序数词 1 1.2.数词的用法 1 1.3.确切数目和大约数目的表示法 2 当堂限时检测 2 课后提升专练 4 核心考点聚焦 1.1.基数词和序数词 基数词表示数量，序数词表示顺序。序数词由基数词变化而成，具体构成如下： 构成 例句 第一、第二、第三需特殊记忆。 first 第一 second 第二 third 第三 4-19的序数词是由其相对应的基数词后面加－th构成。 eleven→eleventh 第十一 thirteen→thirteenth 第十三 有4个词拼写不规则：fifth,eighth,ninth,twelfth. 整十的序数词由其对应的基数词变词尾字母y为ie,再加－th构成。（注意：ten的序数词为tenth.) twenty→twentieth 第二十 fifty→fiftieth第五十 表示“第几十几”时，只将个位数变为序数词，十位数仍用基数词。 thirty-one→thirty-first 第三十一 fifty-six→fifty-sixth 第五十六 1.2.数词的用法 内容 用法 例子 分数表示法 分子用基数词，分母用序数词。分子大于1时，作分母的序数词需用复数形式。单词之间可有连字符，也可以没有。如果是带分数，用and连接整数和分数即可。 1/3:one-third 年龄表示法 用“in+one's+整十的基数词的复数形式”表示“在某人几十多岁时”。表示一个人具体的岁数时，可用“at the age of+基数词”表示。 My grandmother is now in her eighties.我奶奶现在80多岁了。 编号表示法 ①用基数词编号时，用“名词＋基数词”表示。 ②用序数词编号时，用“the+序数词＋名词”表示。 502房间：Room 502 第七页：the seventh page 1.3.确切数目和大约数目的表示法 类别 表达法 例子 确切数目 当 hundred,thousand,million等前面有具体数字或有many,several,few等修饰时，用其单数形式，不与of连用。此时表达确切数目。 I make nine hundred dollars a week.我一周挣900美元。 约略数目 当 hundred,thousand,million等与of连用时，要用其复数形式，其前不能加其他表示数量的词语。此时表达大约的数字概念。 There are thousands of things I want to do.我有很多事情想做。 当堂限时检测 1．Fifty plus four and the answer divided by 2 equals________. A．14 B．22 C．27 D．10 2．Where can you find ________ beautiful flowers and trees all year round? A．hundreds of B．three hundreds of C．hundred of D．three hundred of 3．Though she’s ______ woman, she’s very healthy. A．a eighty-year-old B．an eighty years old C．an eighty-year-old D．an eighty-years-old 4．Thousands of young people went to the countryside to work with the farmers ________. A．in the 1970 B．in 1970s C．in the 1970s’ D．in the 1970s 5．________ of the students in our class will take part in the singing competition. A．Two-thirds B．Two-third C．Second-thirds D．Second-third 6．—There are sixty students in our class and two thirds of them like science. —Oh, ________ of them like science. That’s great. A．twenty B．thirty C．forty D．fifty 7．— If a=4, b=5, what’s the answer to the question “a+2ab+1=?”?       — _______. A．Forty fifth B．Forty five C．Twenty three D．One hundred and twenty one 8．In the early ________ century, the first trains began to carry passengers. A．nineteen B．ninth C．nineteenth D．nine 9．Yesterday was her ________ birthday and she had a birthday party. A．twelve B．twelfth C．the twelve D．the twelfth 10．________ people are his fans. A．Thousands of B．Thousands C．Two thousands D．Two thousands of 11．The building has ________ floors and she lives on the ________ floor with her family. A．twelve; twelve B．twelfth; twelfth C．twelve; twelfth D．twelfth; twelve 12．________ of the students are from Beijing, but only a few _________ the Great Wall. A．Hundreds; have been to B．Two hundred; have been to C．Two hundreds; have gone to D．Hundreds; have gone to 13．________ of the students are from Wuxi, but only a few ________ Yuantouzhu. A．Hundreds; have been to B．Two hundred; have been to C．Two hundreds; have gone to D．Hundreds; have gone to 14．The ice and snow in Harbin are beautiful, so every winter ____________ tourists come here. A．five million of B．millions of C．million of D．five millions 15．________ people visit the Potala Palace during the May Day holiday. A．Thousands of B．Thousand of C．Thousands D．Thousand 16．The noodle was ________ and broke the world records as the longest handmade noodle. A．1,704-meter-long B．1,704 meters long C．1,704 meter long D．1,704-meters long 17．It cost them more than ________ dollars to complete the project. A．2 billion B．2 billions C．2 billion of D．billion of 18．The population of China is about 1,411,750,000. That is ________. A．One billion, four hundred and eleven million, seven hundred and fifty thousand B．One billion, and four hundred eleven, seven hundred and fifty thousand C．One billion, four hundred and eleven million, and seven hundred fifty thousand D．One billion, four hundred eleven million, and seven hundred and fifty thousand 19．To finish the work better, we need five other workers. A．more five B．another five C．the fifth D．another 20．Over ________ tourists paid a visit to Shanghai Disneyland last year. A．million of B．six million C．six millions D．six millions of 21．People in this small village plant ________ trees every year to improve the living environment. A．hundreds of B．five hundreds C．five hundreds of D．hundred of 22．There are ______ students in the school, but only ______ students are girls. A．hundred of; two hundred B．hundreds of; two hundreds C．hundred of; two hundreds D．hundreds of; two hundred 23．—How many birds can you see in the tree? —I can see ________ birds there. A．hundred B．hundreds C．three hundreds D．hundreds of 24．This is a fantastic place. Some people even travel ________ miles to get here. A．hundred of B．hundred C．hundreds of D．hundreds 25．You can see ______ stars shining in the summer sky at night when the weather is fine. A．thousands B．two thousand of C．hundreds of D．hundred 26．I’m going to study aboard for ______. A．a year and two B．two and a year C．a year or two D．two and year 27．— How much is 25 ______ 4?  —It’s 100. A．plus B．multiplied by C．minus D．divided by 28．How to read (21-9)×4 ＝48? A．Twenty-one minus nine multiply by four is forty-eight. B．Four multiplied by twenty-one minus nine equals forty-eight. C．Twenty-one minus nine multiplied by four equals forty-eight. D．Four divided by twenty-one minus by nine is forty-eight. 29．It’s said that ________ of the water around the world ________ polluted. A．two third; is B．two thirds; is C．two thirds; are D．two third; are 30．—Can you work out ________ question on today’s homework? —Of course. Ten plus ten is surely ________. A．the fifth; twenty B．five; twenty C．the fifth; twentieth D．five; twentieth 课后提升专练 31．Dr. Sheldrake did the simple experiment with ________ children. A．hundred B．hundreds C．hundred of D．hundreds of 32．I am going to send my mother a beautiful Gambiered Canton Gauze (香云纱)cheongsam (旗袍) for her ________ birthday. A．the fortieth B．forty C．fortieth D．forties 33．The number of the fans going to this concert is about three ________. And ________ of them are girls. A．thousand; two third B．thousands; two third C．thousand; two thirds D．thousands; two thirds 34．We shared（分享）a nice cake ________ her sister’s ________ birthday. A．on; nine B．in; ninth C．at; nine D．on; ninth 35．—Which sweater is yours? —The ________ one is ________. A．third; mine B．five; my C．sixth; me D．two; mine 36．China is ________ biggest country in area(在面积上)in the world. A．the first B．the second C．the third D．the fourth 37．—How was your weekend? —Great! It was my grandfather’s ________ birthday. We enjoyed ourselves. A．seventy B．seventieth C．seventeen D．seventeenth 38．On my ________ birthday, my mum gave me a pen as a gift. A．the tenth B．ten C．tenth D．the ten 39．About ________ of the Earth is covered with water. A．two thirds B．second three C．a quarter D．three fifth 40．I think the ________ lesson is more difficult than the ________. A．twelfth；twentith B．the twelve；twentieth C．twelve；twentieth D．twelfth；twentieth 41．—Excuse me, where is Mrs. Green’s office? —It’s on ________ floor. A．seven B．the seven C．the seventh D．seventh 42．Next month, Alex will have his ________ birthday party. A．twenty B．twentieth C．the twenty D．the twentieth 43．—How do you like the community? —Wonderful! _________ of the land _________ covered with trees and grass. A．Two fifths; is B．Two fifth; is C．Two fifths; are D．Two fifth; are 44．Tomorrow is my brother’s ________ birthday. He has invited many workmates (同事) to his party. A．twelve B．twelfth C．twenty D．twentieth 45．________ of the teachers in our school ________ women. A．Two fifth; is B．Two fifth; are C．Two fifths; is D．Two fifths; are 46．______ of the students in our class ______ going to summer camp in Beijing next week. A．Two fifths; is B．Second fifths; are C．Second fifths; is D．Two fifths; are 47．______ of the land in our city _____ covered with trees and grass. A．Two fifth, is B．Two fifth, are C．Two fifths, is D．Two fifths, are 48．To be honest, I couldn’t carry on a _________ conversation in English though I could read passages after _________ of study. A．three-minute; six years B．three minutes; six-year C．three minutes; six years D．three minutes’, six-year 49．The book is very popular, about 200 ________ have been sold out. A．million copy B．million copies C．millions copy D．millions copies 50．We don’t have enough English teachers in our school. We need _______ men teachers. A．another B．two others C．more two D．two more 51．About three _________ students took part in the sports meeting. A．thousands B．thousand C．thousand of D．thousands of 52．There are more than _________ workers in our factory. A．thousands of B．two thousands of C．two thousands D．two thousand 53．There are more than ________ people in this city. A．two millions of B．two million C．million of D．two millions 54．People plant ________ trees on Arbor Day every year. A．hundred B．hundreds of C．thousand D．thousands 55．There may be ________ stars in the Milky Way. A．billions B．billion C．billion of D．billions of 56．Ten years ago, there were ________ trees on the hill and different kinds of animals lived there happily. A．thousands of B．two thousands C．two thousand of D．thousand of 57．Grandma sent Johnny some money for his birthday. Johnny spent all of it in five stores. In each store, he spent $ 1.00 more than half of what he had when he came in. How much money did he get from his grandma? A．$25 B．$30 C．$46 D．$62 58．Two men, starting at the same point, walk in opposite directions for 4 meters, turn left and walk another 3 meters. What is the distance between them? A．6 meters B．10 meters C．12.5 meters D．14 meters 59．—How much is 90________3? — It's 30. A．divide B．multiply by C．divided by D．multiplied by 60．Which sentence is correct? A．Multiplied 5 by 6. B．Subtract 4 to 9. C．Plus 3 and 9. D．Add 2 and 8 to make 10. 原创精品资源学科网独家享有版权，侵权必究！6 学科网（北京）股份有限公司 $$