专题05 基数词和序数词
目录
考点聚焦：核心考点聚焦，有的放矢
重点速记：知识点和关键点梳理，查漏补缺
难点强化：难点内容标注与讲解，能力提升
学以致用：真题感知+提升专练，全面突破
核心考点聚焦
基数词的用法
(1)当hundred, thousand, million, billion等和of连用，表示粗略的数目时,须用复数。如hundreds of people数以百计的人;
但如果hundred, thousand, million, billion等词前有具体数词或several时，须用单数six hundred people 600人.
(2)表示“几十年代”或“几十岁”时，用逢十的基数词的复数。如：
in the thirties在30年代 in his fifties在他50多岁时
(3)与基数词合成的复合形容词，其中的名词用单数。如：
a three-month-old baby三个月大的婴儿 a five-year plan一个五年计划
序数词
序数词一般以与之相应的基数词加词尾-th构成，但要注意一些特殊形式。
（一）阿拉伯数字基数词序数词序数词缩略式
1 one first 1st 2 two second 2nd 3 three third 3rd
5 five fifth 5th 8 eight eighth 8th 9 nine ninth 9th
12 twelve twelfth 12th 20 twenty twentieth 20th
21 twenty-one twenty-first 21st 22 twenty-two twenty-second 22nd
23 twenty-three twenty-third 23 rd
阿拉伯数字 1 2 3 4 5 6 7 8 9
基数词 one two three four five six seven eight nine
序数词 first second third fourth fifth sixth seventh eighth ninth
序数词缩写 1st 2nd 3rd 4th 5th 6th 7th 8th 9th
阿拉伯数字 11 12 13 14 15 16 17 18 19
基数词 eleven twelve thirteen fourteen fifteen sixteen seventeen eighteen nineteen
序数词 加th twelfth 加th, 比如 thirteenth, nineteenth
序数词缩写 11th 12th 13th 14th 15th 16th 17th 18th 19th
阿拉伯数字 10 20 30 40 50 60 70 80 90
基数词 ten twenty thirty forty fifty sixty seventy eighty ninety
序数词 tenth 把y变成ie, 加th, 比如 twentieth, fortieth
序数词缩写 10th 20th 30th 40th 50th 60th 70th 80th 90th
个位数是1、2、3的序数词（除了11/12/13）， 它们的缩写形式就是特殊的(1st, 2nd, 3rd), 比如21 twenty-first, 22 twenty-second, 23 twenty-third.
基变序，有规律，词尾加上th(fourth, sixth), 一二三特殊例，结尾字母t,d,d(first, second, third), 八去t, 九去e（eighth, ninth）, ve要用f替(fifth, twelfth), ty将y改成i, the前面有个e,若要碰到几十几，前用基来后用序。
特别提示
1、以y结尾的基数词构成序数词时，先把y变为ie, 再加-th。
2、几十几及以上的序数词，其中十位数或百位数、千位数等用基数词，只有个位数才用序数词。如： 128th: one hundred and twenty-eighth 752nd: seven hundred and fifty-second
3、hundred, thousand, million的序数词均在基数词后加-th构成，hundredth, thousandth, millionth
真题感知
一、单项选择
1．（2022上·江苏南通·七年级统考期末）It is reported that the UK has about 68, 465, 000 people in May, 2022. The right way to read the number “68, 465, 000” is ______.
A．sixty-eight million four hundred and sixty-five thousand
B．sixty-eight million four hundred sixty-five thousand
C．sixty-eight million and four hundred and sixty-five thousand
D．sixty-eight millions four hundreds and sixty-five thousands
2．（2022上·江苏南京·七年级统考期末）The three astronauts in Shenzhou-15 spaceship went into the country’s space station and then met ________ astronauts at 7:33 a.m. on 1st of December.
A．other three B．another three C．three others D．three another
3．（2022上·江苏泰州·七年级校考期末）The mangoes are not enough. We need ________.
A．more five B．five more C．five another D．much more
4．（2022上·江苏盐城·七年级校联考期末）—Excuse me, what’s the time now
—It’s 8:45.
—You mean “________”
A．a quarter to nine B．a quarter to eight C．a quarter past eight D．a quarter past nine
5．（2022下·江苏无锡·七年级校考期末）The river is ________.
A．100 meter long B．100-meter-long C．100 meters’ long D．100 meters long
6．（2022上·江苏淮安·七年级统考期中）—Which class are you in
—We are in________.
A．class 2 grade 7 B．grade 7 class 2
C．Grade 7 Class 2 D．Class 2 Grade 7
7．（2022上·江苏扬州·七年级校联考期中）Amy is ________ and she has an ________ sister.
A．11 years old; 8 years old B．11-year-old; 8-year-old
C．11-year-old; 8 years old D．11 years old; 8-year-old
8．（2023下·江苏南通·七年级统考期末）How do you read the number 8, 465, 700 correctly
A．Eight million four hundred and sixty-five thousand seven hundred.
B．Eight million and four hundred and sixty-five thousand and seven hundred.
C．Eight millions four hundreds and sixty-five thousands seven hundreds.
D．Eight millions four hundred and sixty-five thousands and seven hundred.
9．（2023下·江苏淮安·七年级校考阶段练习）Football is so exciting that __________ people in the world play it.
A．two million of B．two millions C．million of D．millions of
10．（2023下·江苏淮安·七年级校考阶段练习）There are ________ seasons in a year. Winter is ________ season.
A．fourth; four B．fourth; the fourth C．four; the fourth D．four; the four
11．（2023下·江苏淮安·七年级校考阶段练习）There are _________ books in the library.
A．two thousand and three hundred and sixty-five
B．two thousand three hundred and sixty-five
C．two thousands and three hundred and sixty-five
D．two thousands three hundred and sixty-five
12．（2023下·江苏扬州·七年级校考阶段练习）— How long is the new bridge
— It’s about ________.
A．two thousand seventy and three meters
B．two thousands one hundred forty meters
C．one thousand and one hundred fifty meters
D．one thousand one hundred and eighty meters
13．（2022下·江苏苏州·七年级校考期中）— How old is your father, Sue
—________. We are going to celebrate his ________ birthday next month.
A．Thirty-ninth; fourties B．Thirty-ninth; fortieth
C．Thirty-nine; fortieth D．Thirty-nine; fourtieth
14．（2023下·江苏·七年级期末）There are about ________ teachers in our school.
A．hundreds of B．hundreds C．two hundred D．two hundred of
15．（2023下·江苏·七年级期末）Liming, a ________ girl, helped the old woman out of a fire.
A．20-year old B．20-years-old C．20-year-old D．20 years old
16．（2023下·江苏·七年级期末）Huai’an is a beautiful city. About ________ people live in the city.
A．5 millions B．5 million of C．5 millions of D．5 million
17．（2023下·江苏·七年级期末）— How do you read 102,378
— ________.
A．One hundred two thousand and three hundred seventy-eight
B．One hundred and two thousand three hundred and seventy-eight.
C．One hundred two thousand three hundred and seventy-eight
D．One hundred and two thousand and three hundred and seventy-eight
18．（2023下·江苏扬州·七年级校考阶段练习）—How do you say 4, 265 in English
—It’s _________.
A．four thousand two hundred and sixty five B．four thousand and two hundred sixty five
C．four thousand two hundred and sixty-five D．four thousand and two hundreds and sixty-five
19．（2023下·江苏连云港·七年级校考阶段练习）—What should we do now, Mr. Brown
—Please turn to Page ________ and look at the _________ picture.
A．Fourty, nineth B．Forty, ninth C．Fortieth, nine D．Forty, nine
20．（2023下·江苏连云港·七年级校考阶段练习）—Bob, can you read this number 320,057
—Yes, I can. It’s _________.
A．three hundred and twenty thousand, fifty-seven
B．three hundred and twenty thousand and fifty-seven
C．three hundreds and twenty thousands, fifty-seven
D．three hundred and twenty thousands, and fifty-seven
21．（2023下·江苏徐州·七年级校考阶段练习）There are about ________ workers in that factory.
A．two hundreds B．two hundreds of C．two thousand of D．two thousand
22．（2023下·江苏镇江·七年级校联考阶段练习）Please turn to page (页) ________ and have a look at the picture on it.
A．the eightieth B．eightieth C．eighty D．eighties
23．（2023下·江苏扬州·七年级校考阶段练习）—Which floor do you live ________
—The ________ floor.
A．on, nine B．on, ninth C．in, nineth D．in, nine
24．（2023下·江苏徐州·七年级校考阶段练习）—David, how old is your father this year
—40. And we just had a special party for his ________ birthday last weekend.
A．the fourteenth B．the fortieth C．fourteenth D．fortieth
25．（2023下·江苏徐州·七年级统考阶段练习）June ________ will be ________ day in Hong Kong.
A．five; my the second B．the fifth; my second
C．five; my two D．the fifth; my the second
26．（2023下·江苏扬州·七年级校联考阶段练习）We held many activities to celebrate ________ anniversary of the Communist Party of China（中国共产党华诞) in 2021.
A．one hundred B．the one hundred C．one hundredth D．the one hundredth
27．（2023下·江苏盐城·七年级校联考阶段练习）—Today is my _______ birthday.
—Happy birthday to you!
A．the twenty-three B．twentieth-third C．twenty-third D．the twenty-third
28．（2023下·江苏盐城·七年级校联考阶段练习）Now children, turn to Page _______ and look at the _______ picture.
A．Twentieth; one B．Twenty; one C．Twentieth; first D．Twenty; first
29．（2023下·江苏淮安·七年级洪泽外国语中学校考阶段练习）—How old is your son
—________. We will celebrate his ________ birthday.
A．Tenth; ten B．Ten; tenth C．Tenth; tenth D．Ten; ten
30．（2023下·江苏无锡·七年级校考阶段练习）Now, turn to page ________ and look at ________ picture in Lesson Two.
A．twentieth, the one B．twenty, one C．twentieth, the first D．twenty, the first
31．（2023下·江苏盐城·七年级校考阶段练习）My cousin ________ be twelve years old next week. I am going to buy a gift for his ________ birthday.
A．will; twelve B．is going to; twelve C．will; twelfth D．is going to; twelfth
32．（2023下·江苏常州·七年级校考阶段练习）It is his ________ birthday. His family make ________ Eiffel Tower model.
A．the twenty; a 8-meters-tall B．the twenties; an 8-meters-tall
C．twentieth; an 8-meter-tall D．twentieth; a 8-meter-tall
33．（2023下·江苏无锡·七年级校考阶段练习）Now children, turn to Page ________ and look at the ________ picture in Unit 1.
A．Fifth, one B．Five, one C．Fifth, first D．Five, first
34．（2023下·江苏泰州·七年级校考阶段练习）This is my ________ day to be here.
A．a second B．the second C．second D．two
35．（2023下·江苏扬州·七年级校联考阶段练习）I live on ________ floor in this building, just ten floors ________ you.
A．ten; below B．ten; under C．the tenth; below D．the tenth; under
36．（2022上·江苏徐州·七年级统考期中）—“Go downstairs, and you’ll get to the first floor.” says the worker in British Museum.
— “Oh, mom, that means we’ll get to the ________ floor .” says Jim, an American boy.
A．second B．third C．ground D．fourth
37．（2022下·江苏南京·七年级校考期中）—How old is your sister
—________. We had a special party for her ________ birthday last Sunday.
A．Nine; ninth B．Nine; the ninth C．Ninth; nine D．Ninth; the ninth
38．（2022下·江苏苏州·七年级统考期末）J. K. Rowling finished her ________ novel when she was ________.
A．six; forties B．sixth; forty C．sixth; fortieth D．six; forty
39．（2022·辽宁朝阳·统考中考真题）—It is Mom’s __________ birthday next Wednesday. What should we do
—What about buying her __________ flowers to show our love
A．forty; forty B．forty; fortieth C．fortieth; forty D．fortieth; fortieth
40．（2022下·江苏常州·七年级常州市第二十四中学校考期中）—What should we do now, Mr. Gao
—Please turn to Page ________ and look at the ________ line of the article.
A．Forty-nine; fifth B．Forty-ninth; five
C．Fourty-nine; fifth D．Fourty-ninth; five
参考答案：
1．A
【详解】句意：据报道，2022年5月英国约有68465000人。数字68, 465, 000正确的读法是六千八百四十六万五千。
考查大数字读法。million“百万”，thousand“千”，单位前面有具体数字时应用单数形式，排除D； million和thousand两个单位之间不加and，排除C；465读作“four hundred and sixty-five”，排除B。故选A。
2．B
【详解】句意：12月1日上午7点33分，神舟十五号飞船上的三名宇航员进入中国空间站，与另外三名宇航员见面。
考查another的用法。根据“met...astronauts ”可知是与另外三名宇航员见面，用结构another+数词+名词复数。故选B。
3．B
【详解】句意：芒果不够。我们还需要五个。
考查基数词的用法。根据“The mangoes are not enough.”可知，此处是指还需几个，another+基数词=基数词+more，表示“额外的，另外的”，five more表示“再五个”。故选B。
4．A
【详解】句意：——打扰一下，现在是几点了？——是八点四十五分。——你的意思是“差一刻到九点”。
考查时间的表达。a quarter to nine八点四十五分/差一刻到九点；a quarter to eight八点差一刻/七点四十五分；a quarter past eight八点一刻；a quarter past nine九点一刻。根据“It’s 8:45.”可知，八点四十五分的另一种表达是“差一刻到九点”。故选A。
5．D
【详解】句意：这条河有100米长。
考查长度的表达。表示长度时，用结构：基数词+单位词的复数+形容词，故100米长的英文表达为100 meters long。故选D。
6．D
【详解】句意：——你在几班？——我们在7年级2班。
考查年级的表达。在表达年级和班级时，单词的首字母均要大写，排除A与B；班级在前，年级在后，故选D。
7．D
【详解】句意：Amy 11岁，并且她有一个八岁的妹妹。
考查年龄表达。第一空表示“几岁”，用数字+year(s) old；第二空作定语，应用连字符，故选D。
8．A
【详解】句意：你是如何正确地读出8,465,700这个数字的？
考查数字的读法。hundred，hundred和million等表示单位的数量词前有具体数字时，这些词不能加s，排除CD；百位和十位之间加and，其余不加and，排除B。故选A。
9．D
【详解】句意：足球是如此令人兴奋，以至于世界上有数百万人玩它。
考查数词的表达。短语millions of表示“上百万的”，表示概数，表示具体数字时候应用基数词+million。故选D。
10．C
【详解】句意：一年有四个季节。冬天是第四个季节。
考查基数词和序数词。four四；fourth第四。第一空是描述一年中有四个季节，应用基数词four；第二空是说冬天是一年中第四个季节，应用序数词fourth，故选C。
11．B
【详解】句意：图书馆里有两千三百六十五本书。
考查基数词。在英语中，数字每隔三个有个逗号，百位和十位数之间加and，千位和百位之间不需要and，排除AC选项；thousand前有具体数字时，不需要加-s。故选B。
12．D
【详解】句意：——你知道新桥有多长吗？——它大约1180米。
考查数词。当hundred，thousand等数词和具体的数字连用时，不用复数形式；读数时hundred之后用and连接，十位和个位用连字符连接，故选D。
13．C
【详解】句意：——你父亲多大了，苏？——三十九岁。下个月我们将庆祝他的四十岁生日。
考查基数词和序数词。第一空是回答父亲的年龄，应用基数词thirty-nine，排除AB选项；第二空是指四十岁生日，应用序数词fortieth，故选C。
14．C
【详解】句意：我们学校大约有两百名教师。
考查基数词的表达。表达具体数字时候，应用“基数词+hundred”的结构，表达概数的时候，应用hundreds of表示“上百的”。故选C。
15．C
【详解】句意：20岁的女孩李明帮助老妇人逃出了一场大火。
考查复合形容词。修饰名词girl，用形容词作定语，表达“20岁的”，用复合形容词，其基本结构为：数词-单数名词-形容词，即20-year-old。故选C。
16．D
【详解】句意：淮安是个美丽的城市。大约有500万人生活在这个城市里。
考查数词。million百万，若与具体数字连用，其后不加s，也不加of；若与of连用，其后要加s，millions of“数百万的”，故选D。
17．B
【详解】句意：——102,378怎么读？——十万两千三百七十八。
考查基数词的表达法。1000 以上的基数词的表示法。先从右至左数，每三位数加一个逗号 (即以此把数目分为若干段)。第一个逗号前的数为thousand (千)，第二个逗号前的数为million (百万)，第三个逗号前的数为billion (十亿)，然后一段一段地数。所以102378读为“One hundred and two thousand three hundred and seventy-eight”。故选B。
18．C
【详解】句意：——你如何用英语说“ 4, 265”？——四千二百六十五。
考查基数词读法。四位基数词读法：在百位和十位之间，一般要用连词“and”，十位和个位之间用连接号“-”，hundred和具体数字连用时，不能加s。故选C。
19．B
【详解】句意：——布朗先生，我们现在应该做什么？——请翻到第40页，看第九张图片。
考查数词的用法。forty四十，基数词；nine九，基数词；ninth第九，序数词；fortieth第四十，序数词；nineth错误写法。第一个空表达第几页，可以用“page+基数词”或“the+序数词+page”，所以第一空应填基数词，可排除C选项；第二个空前有定冠词the，所以第二个空应填序数词，表顺序。故选B。
20．B
【详解】句意：——鲍勃，你能读出这个数字320057吗？——嗯，我可以。是Three hundred and twenty thousand and fifty seven。
考查基数词的读法。1000 以上的基数词的表示法：先从右至左数，每三位数加一个逗号 。第一个逗号前的数为thousand (千)，第二个逗号前的数为million (百万)，第三个逗号前的数为billion (十亿)，thousand/million/billion都用单数，然后一段一段地数；百位和十位之间用and连接，若百位为0，千位和十位用and连接。“320,057”看作“320个‘千’和57”，读作three hundred and twenty thousand and fifty-seven。故选B。
21．D
【详解】句意：那家工厂大约有两千名工人。
考查数词的表达。表示确切的数量，用“基数词+数词的单数形式”；表示概数，用数词的复数形式+of，四个选项中只有D选项结构正确，故选D。
22．C
【详解】句意：请翻到第80页，看看上面的图片。
考查基数词。表示“第……页时”，可用“名词+基数词”，page eighty意为“第80页”。故选C。
23．B
【详解】句意：——你住在哪一层楼？——九楼。
考查介词辨析和序数词。on在……上；in在……里；nine九；ninth第九；nineth错误写法。根据“floor”可知，此处在询问住几楼，表达“在……楼”应用“on+序数词+floor”的结构，故第一空应用on，第二空应用序数词ninth。故选B。
24．D
【详解】句意：——大卫，你父亲今年多大了？——40岁，上周末，我们刚刚为他四十岁生日举办了一个特别的派对。
考查基数词和序数词。fourteenth第十四；fortieth第四十。根据“40...a special party for his...birthday”可知，此处是指父亲四十岁生日，应用序数词，空前有his修饰，序数词前不用冠词，故选D。
25．B
【详解】句意：6月5号将会是我在香港的第二天。
考查序数词。five五；the fifth第五；my the second错误表达；my second我的第二……；my two我的两个。根据“June...will be...day in Hong Kong.”可知，此处“June...”表示日期，所以第一空应是序数词the fifth，排除选项A和C；而此处“...day in Hong Kong”表示“我”在香港的第二天，序数词second前有形容词性物主代词时，无需再加定冠词the，此空应是my second。故选B。
26．D
【详解】句意：我们在2021年举行了许多活动庆祝中国共产党成立100周年。
考查序数词表顺序。one hundred“一百”，由语境可知是第一百年，在hundred后加th变成序数词，序数词词前需加定冠词the。故选D。
27．C
【详解】句意：——今天是我二十三岁生日。——祝你生日快乐！
考查数词。根据“my ... birthday”可知用序数词标顺序，空前有my，不加the，排除AD；B项是错误拼写，C项twenty-third“第二十三”，符合语境。故选C。
28．D
【详解】句意：孩子们现在，打开到二十页看第一幅图。
考查数词。用数词表示事物的顺序时，名词+基数词，而且首字母大写；the+序数词+名词，首字母不要大写。故选D。
29．B
【详解】句意：——你儿子多大了？——十岁。我们将庆祝他的十岁生日。
考查数词。第一空回答年龄，用基数词ten；第二空表示“他第十个生日”，用序数词tenth。故选B。
30．D
【详解】句意：现在，翻到第二十页，看第二课的第一幅图。
考查基数词和序数词。twentieth第二十；twenty二十；one一个；the first第一个。page+基数词=the+序数词+page，表示“多少页”，所以第一空填基数词。根据“look at … picture”可知，此处指看第一幅图，用the+序数词first，故选D。
31．C
【详解】句意：我表弟下星期就12岁了。我打算为他的12岁生日买一份礼物。
考查一般将来时及序数词的用法。be going to 表示根据主观判断将来绝对发生的事情；will表示客观上将来势必发生的事情。twelve十二，基数词；twelfth第十二，序数词。根据“My cousin…be twelve years old next week.”可知，这是客观上将来势必发生的事情，故第一空用will。根据“his…birthday”可知，此处表示“他的十二岁生日”，应该用序数词表示顺序。故选C。
32．C
【详解】句意：今天是他二十岁生日。他的家人做了一个8米高的埃菲尔铁塔模型。
考查序数词表达以及冠词a和an的区别。根据“It is his...birthday. ”可知，空格处要表示20岁生日，即第20个生日，所以第一空要用序数词twentieth；根据选项“8-meter-tall”可知，单词“eight（8）”第一个字母是元音音素，所以其前面要用冠词an。故选C。
33．D
【详解】句意：现在，孩子们，将书翻到第5页，并且，看第一单元中的第一张图片。
考查数词的用法。根据第一空前的“Page”可知，此处满足编号的表达法，编号的表达法为“名词+基数词”，并且名词和基数词都需要大写，所以，Five符合题意；根据“the...picture”可知，第二空需填入序数词，即first符合题意。故选D。
34．C
【详解】句意：这是我来到这里的第二天。
考查序数词。second第二，序数词；two二，基数词。名词day前面应用序数词限定，序数词前面有物主代词时候不需要加the，故选C。
35．C
【详解】句意：我住在这栋楼的十楼，就在你下面十层。
考查序数词用法和介词辨析。ten十，基数词；below在……下面，介词，强调某物在另一物下面，不一定是正下方；under在……下面，介词，某物在另一物的正下方；the tenth中tenth第十，序数词。根据语境可知，我住在十楼，the+序数词+floor表示“第几层楼”，一空处需填“the+序数词”的结构，tenth“第十”，序数词，排除A和B，又因住在你楼下，不一定是正下方，二空处用介词below“在……下面”。故选C。
36．A
【详解】句意：——“下楼，你就会到二楼。”大英博物馆的工作人员说。——“哦，妈妈，那意味着我们会到二楼。”美国男孩吉姆说。
考查英美国家文化差异。second第二；third第三；ground地面；fourth第四。在英国中，first floor是指二楼，相当于美国的二楼，英国一楼的表达是ground floor。故选A。
37．A
【详解】句意：——你的姐姐多大？——九岁。上周日，我们为她的九岁生日举行了一个特别的聚会。
考查数词辨析。nine九，基数词；ninth第九，序数词。第一空表示“九岁”，用基数词；第二个空表示顺序，用序数词，空前有her修饰，序数词前不用冠词，故选A。
38．B
【详解】句意：J. K.罗琳在40岁时完成了她的第六部小说。
考查数词的用法。此处作定语修饰novel，用序数词，排除AD；第二处表示年龄，用基数词。故选B。
39．C
【详解】句意：——下周三是妈妈四十岁生日。我们该怎么办？——给她买四十朵花来表达我们的爱怎么样？
考查基数词和序数词。第一空是指生日，应用序数词；第二空是表示40朵花，应用基数词，故选C。
40．A
【详解】句意：——高老师，我们现在应该做什么？——请翻到49页，看这篇文章的第五行。
考查数词的表达。forty-nine四十九，基数词；fifth第五，序数词；five五，基数词。Page+基数词，表示“第几页”，所以第一空填基数词Forty-nine。根据the可知，第二空应填序数词fifth，故选A。
提升专练
二、用所给单词的正确形式填空
41．（2022上·江苏扬州·七年级统考期末）I live on the floor of the tall building with my parents. (twelve)
42．（2023上·江苏无锡·七年级校联考期中）Our library is on the (one) floor in our school.
43．（2022上·江苏常州·七年级统考期中）Our art room is on the (one) floor of the classroom building.
44．（2022上·江苏无锡·七年级校联考期中）She had her (one) baby in 2008.
45．（2022上·江苏盐城·七年级统考期中）Let’s go to the library (one), and then have lunch together.
46．（2023上·江苏苏州·七年级苏州市振华中学校校考开学考试）There is an art room on the (one) floor.
47．（2023下·江苏扬州·七年级统考期末）I want to buy some books for my sister’s birthday. (nine)
48．（2023下·江苏扬州·七年级统考期末）He is enjoying the page of the book. (forty)
49．（2023下·江苏·七年级期末）He will celebrate his grandpa’s one (hundred) birthday next week.
50．（2023下·江苏·七年级期末）Peter and his wife live on the (eight) floor and they go up and down by lift.
51．（2023下·江苏徐州·七年级统考阶段练习）Today is my daughter’s birthday and she gets many presents. (twenty)
52．（2023下·江苏泰州·七年级统考阶段练习）Last week we held a party for his (15) birthday.
53．（2023下·江苏徐州·七年级徐州市第二十六中学校考阶段练习）Tree-planting Day is on the (twelve) of March every year.
54．（2023下·江苏泰州·七年级校考阶段练习）My best friend Sandy lives on the (nine) floor.
55．（2022下·江苏扬州·七年级统考期中）February is the month of the year. (two)
56．（2023下·江苏徐州·七年级校考阶段练习）The old lady lives on the (five) floor.
57．（2022下·江苏扬州·七年级校考期中）Three (four) of them are women teachers.
58．（2023下·江苏淮安·七年级校考阶段练习）They plan to have a big party to celebrate their daughter’s (nine) birthday.
59．（2023下·江苏·七年级期末）He is in his early (twenty).
60．（2023下·江苏·七年级期末）During the May Day holiday, we stayed in a mountain village with (thousand) trees around.
61．（2023下·江苏·七年级期末）More than two (hundred) trees are planted in our neighborhood every year.
62．（2022上·江苏扬州·七年级统考期末） a week, I go shopping with my mother in that shopping mall. (two)
63．（2022上·江苏扬州·七年级统考期末）You can spend two hours in the library. (many)
64．（2023下·江苏·七年级期末）He is in his early (forty).
65．（2023下·江苏无锡·七年级校考阶段练习）Daniel’s birthday is on the (nine) of March.
66．（2023下·江苏无锡·七年级校考阶段练习）Today is my sister’s (twenty) birthday.
67．（2023下·江苏泰州·七年级校联考阶段练习）—Which is the (twelve) month of a year
—December.
68．（2022下·江苏无锡·七年级统考期中）Beijing is the (one) city that holds both the Summer and Winter Olympics.
69．（2023下·江苏扬州·七年级校联考阶段练习）Today is his grandpa’s birthday. They will have a big dinner in the restaurant.(99)
70．（2023下·江苏无锡·七年级校联考阶段练习）It’s my mother’s (forty) birthday next Friday. I want to buy a present for her.
41．twelfth
【详解】句意：我和父母住在这栋高楼的十二楼。此处指“第十二楼”，表示顺序用序数词twelfth“第十二”。故填twelfth。
42．first
【详解】句意：我们的图书馆在学校的一楼。one是基数词，定冠词the后加序数词，故填first。
43．first
【详解】句意：我们的美术室在教学楼的一楼。此处指“一楼”，表示顺序用序数词first“第一”。故填first。
44．first
【详解】句意：她在2008年生了第一个孩子。根据“She had her...baby in 2008.”可知是指第一个孩子，应用first。故填first。
45．first
【详解】句意：我们先去图书馆，然后一起吃午饭。根据“then have lunch together”可知此处指做事的先后顺序，因此空处用first，意为“首先”，作副词。故填first。
46．first
【详解】句意：一楼有一间美术室。此处表示“一楼”，表示顺序用序数词first“第一”。故填first。
47．ninth
【详解】句意：我想为我妹妹的九岁生日买一些书。根据“my sister’s…birthday. (nine)”可知，此处应该用nine的序数词ninth“第九”，表示顺序。故填ninth。
48．fortieth
【详解】句意：他正在津津有味地读这本书的第四十页。根据空后的单数名词page和所给词可知，此处应用forty的基数词作定语修饰，forty的基数词是fortieth“第四十”，此处指“这本书的第四十页”，故填fortieth。
49．hundredth
【详解】句意：下周他将会庆祝爷爷的100岁生日。根据birthday可知，此处表示第100个生日，应用序数词。故填hundredth。
50．eighth
【详解】句意：彼得和他的妻子住在八楼并且他们乘电梯上下楼。根据“on the…floor”可知，此处是指住在第几层，需要序数词，eighth符合句意。故填eighth。
51．twentieth
【详解】句意：今天是我女儿的二十岁生日，她收到了很多礼物。此处指“第二十岁的生日”，表示顺序用序数词twentieth“第二十”。故填twentieth。
52．fifteenth
【详解】句意：上个星期，我们为他的十五岁生日举办了一场派对。fifty“15”，根据“his...(15) birthday”可知，此处表示他的十五岁生日，此空应是fifteen的序数词fifteenth“第十五个”。故填fifteenth。
53．twelfth
【详解】句意：植树节是在每年的三月十二日。此处表示“三月十二日”，应用序数词形式twelfth。故填twelfth。
54．ninth
【详解】句意：我最好的朋友桑迪住在九楼。根据“My best friend Sandy lives on the...floor.”可知，表达第九层楼，应使用序数词。故填ninth。
55．second
【详解】句意：二月是一年中的第二个月。根据题干可知，定冠词后应接序数词，应用two的序数词second，表示“第二”。故填second。
56．fifth
【详解】句意：这位老太太住在五楼。根据“floor”可知，其前不能用基数词，应该用序数词修饰。five的序数词为fifth。故填fifth。
57．fourths
【详解】句意：他们中有四分之三是女老师。此处考查分数的表达：基数词+序数词（若基数词大于一，则序数词用复数），此处空前是基数词Three，后接序数词复数形式fourths。故填fourths。
58．ninth
【详解】句意：他们计划举办一个盛大的派对来庆祝他们的女儿的第九个生日。根据所给词是基数词nine，空格后是单数名词birthday，所以填序数词表示顺序，nine的序数词是“ninth第九”。故填ninth。
59．twenties
【详解】句意：他二十出头。“in one’s+基数词整十数的复数”表示“在某人几十岁时”，in one’s twenties“在某人20几岁的时候”，故填twenties。
60．thousands of
【详解】句意：在去年五一节期间，我们住在一个有上千棵树的山村里。提示词“thousand”前有具体数字时，用单数形式；没有具体数字时，用复数形式和of连用，表示“数以千计”。故填thousands of。
61．hundred
【详解】句意：我们附近每年种植200多棵树。hundred前有具体数字时，用单数形式；没有具体数字时，用复数形式和of连用。根据“two”可知此处用单数形式，故填hundred。
62．Twice
【详解】句意：每周两次，我和妈妈在那家购物商场购物。根据“a week”可知此处表示频率，“每周两次”应是twice a week，位于句首，首字母要大写。故填Twice。
63．more
【详解】句意：你可以在图书馆再待两个小时。基数词+more+可数名词复数，表示“另外的”，two more hours“另外两个小时”。故填more。
64．forties
【详解】句意：他四十出头。“在某人几十多岁”为“in one’s+整十数基数词复数形式”，forty复数形式为“forties”。故填forties。
65．ninth
【详解】句意：丹尼尔的生日在三月九日。根据“on the...of March”可知，此处指三月的第九天，日期用序数词表达，nine的序数词是ninth。故填ninth。
66．twentieth
【详解】句意：今天是我妹妹的二十岁生日。twenty“二十”，基数词，此处是指生日，应用序数词，故填twentieth。
67．twelfth
【详解】句意：——一年中哪一个月是第十二个月？——十二月。twelve“十二”，是基数词，有定冠词the修饰，且month为单数，空处用序数词，故填twelfth。
68．first
【详解】句意：北京是第一个举办夏季奥运会和冬季奥运会的城市。根据“Beijing is the…city to host both the Summer and the Winter Olympics.”可知，北京是第一个举办双奥的城市，这里应用one的序数词first，故填first。
69．ninety-ninth
【详解】句意：今天是他的爷爷的九十九岁生日。他们将会在这个餐厅吃一顿大餐。根据“Today is his grandpa’s...birthday”可知空格处填序数词表示顺序，ninety-ninth“第九十九”。故填ninety-ninth。
70．fortieth
【详解】句意：下周五是我母亲的四十岁生日。我想给她买一份礼物。birthday为名词，此处应用forty的序数词fortieth表示“第四十个”。故填fortieth。专题05 基数词和序数词
目录
考点聚焦：核心考点聚焦，有的放矢
重点速记：知识点和关键点梳理，查漏补缺
难点强化：难点内容标注与讲解，能力提升
学以致用：真题感知+提升专练，全面突破
核心考点聚焦
基数词的用法
(1)当hundred, thousand, million, billion等和of连用，表示粗略的数目时,须用复数。如hundreds of people数以百计的人;
但如果hundred, thousand, million, billion等词前有具体数词或several时，须用单数six hundred people 600人.
(2)表示“几十年代”或“几十岁”时，用逢十的基数词的复数。如：
in the thirties在30年代 in his fifties在他50多岁时
(3)与基数词合成的复合形容词，其中的名词用单数。如：
a three-month-old baby三个月大的婴儿 a five-year plan一个五年计划
序数词
序数词一般以与之相应的基数词加词尾-th构成，但要注意一些特殊形式。
（一）阿拉伯数字基数词序数词序数词缩略式
1 one first 1st 2 two second 2nd 3 three third 3rd
5 five fifth 5th 8 eight eighth 8th 9 nine ninth 9th
12 twelve twelfth 12th 20 twenty twentieth 20th
21 twenty-one twenty-first 21st 22 twenty-two twenty-second 22nd
23 twenty-three twenty-third 23 rd
阿拉伯数字 1 2 3 4 5 6 7 8 9
基数词 one two three four five six seven eight nine
序数词 first second third fourth fifth sixth seventh eighth ninth
序数词缩写 1st 2nd 3rd 4th 5th 6th 7th 8th 9th
阿拉伯数字 11 12 13 14 15 16 17 18 19
基数词 eleven twelve thirteen fourteen fifteen sixteen seventeen eighteen nineteen
序数词 加th twelfth 加th, 比如 thirteenth, nineteenth
序数词缩写 11th 12th 13th 14th 15th 16th 17th 18th 19th
阿拉伯数字 10 20 30 40 50 60 70 80 90
基数词 ten twenty thirty forty fifty sixty seventy eighty ninety
序数词 tenth 把y变成ie, 加th, 比如 twentieth, fortieth
序数词缩写 10th 20th 30th 40th 50th 60th 70th 80th 90th
个位数是1、2、3的序数词（除了11/12/13）， 它们的缩写形式就是特殊的(1st, 2nd, 3rd), 比如21 twenty-first, 22 twenty-second, 23 twenty-third.
基变序，有规律，词尾加上th(fourth, sixth), 一二三特殊例，结尾字母t,d,d(first, second, third), 八去t, 九去e（eighth, ninth）, ve要用f替(fifth, twelfth), ty将y改成i, the前面有个e,若要碰到几十几，前用基来后用序。
特别提示
1、以y结尾的基数词构成序数词时，先把y变为ie, 再加-th。
2、几十几及以上的序数词，其中十位数或百位数、千位数等用基数词，只有个位数才用序数词。如： 128th: one hundred and twenty-eighth 752nd: seven hundred and fifty-second
3、hundred, thousand, million的序数词均在基数词后加-th构成，hundredth, thousandth, millionth
真题感知
一、单项选择
1．（2022上·江苏南通·七年级统考期末）It is reported that the UK has about 68, 465, 000 people in May, 2022. The right way to read the number “68, 465, 000” is ______.
A．sixty-eight million four hundred and sixty-five thousand
B．sixty-eight million four hundred sixty-five thousand
C．sixty-eight million and four hundred and sixty-five thousand
D．sixty-eight millions four hundreds and sixty-five thousands
2．（2022上·江苏南京·七年级统考期末）The three astronauts in Shenzhou-15 spaceship went into the country’s space station and then met ________ astronauts at 7:33 a.m. on 1st of December.
A．other three B．another three C．three others D．three another
3．（2022上·江苏泰州·七年级校考期末）The mangoes are not enough. We need ________.
A．more five B．five more C．five another D．much more
4．（2022上·江苏盐城·七年级校联考期末）—Excuse me, what’s the time now
—It’s 8:45.
—You mean “________”
A．a quarter to nine B．a quarter to eight C．a quarter past eight D．a quarter past nine
5．（2022下·江苏无锡·七年级校考期末）The river is ________.
A．100 meter long B．100-meter-long C．100 meters’ long D．100 meters long
6．（2022上·江苏淮安·七年级统考期中）—Which class are you in
—We are in________.
A．class 2 grade 7 B．grade 7 class 2
C．Grade 7 Class 2 D．Class 2 Grade 7
7．（2022上·江苏扬州·七年级校联考期中）Amy is ________ and she has an ________ sister.
A．11 years old; 8 years old B．11-year-old; 8-year-old
C．11-year-old; 8 years old D．11 years old; 8-year-old
8．（2023下·江苏南通·七年级统考期末）How do you read the number 8, 465, 700 correctly
A．Eight million four hundred and sixty-five thousand seven hundred.
B．Eight million and four hundred and sixty-five thousand and seven hundred.
C．Eight millions four hundreds and sixty-five thousands seven hundreds.
D．Eight millions four hundred and sixty-five thousands and seven hundred.
9．（2023下·江苏淮安·七年级校考阶段练习）Football is so exciting that __________ people in the world play it.
A．two million of B．two millions C．million of D．millions of
10．（2023下·江苏淮安·七年级校考阶段练习）There are ________ seasons in a year. Winter is ________ season.
A．fourth; four B．fourth; the fourth C．four; the fourth D．four; the four
11．（2023下·江苏淮安·七年级校考阶段练习）There are _________ books in the library.
A．two thousand and three hundred and sixty-five
B．two thousand three hundred and sixty-five
C．two thousands and three hundred and sixty-five
D．two thousands three hundred and sixty-five
12．（2023下·江苏扬州·七年级校考阶段练习）— How long is the new bridge
— It’s about ________.
A．two thousand seventy and three meters
B．two thousands one hundred forty meters
C．one thousand and one hundred fifty meters
D．one thousand one hundred and eighty meters
13．（2022下·江苏苏州·七年级校考期中）— How old is your father, Sue
—________. We are going to celebrate his ________ birthday next month.
A．Thirty-ninth; fourties B．Thirty-ninth; fortieth
C．Thirty-nine; fortieth D．Thirty-nine; fourtieth
14．（2023下·江苏·七年级期末）There are about ________ teachers in our school.
A．hundreds of B．hundreds C．two hundred D．two hundred of
15．（2023下·江苏·七年级期末）Liming, a ________ girl, helped the old woman out of a fire.
A．20-year old B．20-years-old C．20-year-old D．20 years old
16．（2023下·江苏·七年级期末）Huai’an is a beautiful city. About ________ people live in the city.
A．5 millions B．5 million of C．5 millions of D．5 million
17．（2023下·江苏·七年级期末）— How do you read 102,378
— ________.
A．One hundred two thousand and three hundred seventy-eight
B．One hundred and two thousand three hundred and seventy-eight.
C．One hundred two thousand three hundred and seventy-eight
D．One hundred and two thousand and three hundred and seventy-eight
18．（2023下·江苏扬州·七年级校考阶段练习）—How do you say 4, 265 in English
—It’s _________.
A．four thousand two hundred and sixty five B．four thousand and two hundred sixty five
C．four thousand two hundred and sixty-five D．four thousand and two hundreds and sixty-five
19．（2023下·江苏连云港·七年级校考阶段练习）—What should we do now, Mr. Brown
—Please turn to Page ________ and look at the _________ picture.
A．Fourty, nineth B．Forty, ninth C．Fortieth, nine D．Forty, nine
20．（2023下·江苏连云港·七年级校考阶段练习）—Bob, can you read this number 320,057
—Yes, I can. It’s _________.
A．three hundred and twenty thousand, fifty-seven
B．three hundred and twenty thousand and fifty-seven
C．three hundreds and twenty thousands, fifty-seven
D．three hundred and twenty thousands, and fifty-seven
21．（2023下·江苏徐州·七年级校考阶段练习）There are about ________ workers in that factory.
A．two hundreds B．two hundreds of C．two thousand of D．two thousand
22．（2023下·江苏镇江·七年级校联考阶段练习）Please turn to page (页) ________ and have a look at the picture on it.
A．the eightieth B．eightieth C．eighty D．eighties
23．（2023下·江苏扬州·七年级校考阶段练习）—Which floor do you live ________
—The ________ floor.
A．on, nine B．on, ninth C．in, nineth D．in, nine
24．（2023下·江苏徐州·七年级校考阶段练习）—David, how old is your father this year
—40. And we just had a special party for his ________ birthday last weekend.
A．the fourteenth B．the fortieth C．fourteenth D．fortieth
25．（2023下·江苏徐州·七年级统考阶段练习）June ________ will be ________ day in Hong Kong.
A．five; my the second B．the fifth; my second
C．five; my two D．the fifth; my the second
26．（2023下·江苏扬州·七年级校联考阶段练习）We held many activities to celebrate ________ anniversary of the Communist Party of China（中国共产党华诞) in 2021.
A．one hundred B．the one hundred C．one hundredth D．the one hundredth
27．（2023下·江苏盐城·七年级校联考阶段练习）—Today is my _______ birthday.
—Happy birthday to you!
A．the twenty-three B．twentieth-third C．twenty-third D．the twenty-third
28．（2023下·江苏盐城·七年级校联考阶段练习）Now children, turn to Page _______ and look at the _______ picture.
A．Twentieth; one B．Twenty; one C．Twentieth; first D．Twenty; first
29．（2023下·江苏淮安·七年级洪泽外国语中学校考阶段练习）—How old is your son
—________. We will celebrate his ________ birthday.
A．Tenth; ten B．Ten; tenth C．Tenth; tenth D．Ten; ten
30．（2023下·江苏无锡·七年级校考阶段练习）Now, turn to page ________ and look at ________ picture in Lesson Two.
A．twentieth, the one B．twenty, one C．twentieth, the first D．twenty, the first
31．（2023下·江苏盐城·七年级校考阶段练习）My cousin ________ be twelve years old next week. I am going to buy a gift for his ________ birthday.
A．will; twelve B．is going to; twelve C．will; twelfth D．is going to; twelfth
32．（2023下·江苏常州·七年级校考阶段练习）It is his ________ birthday. His family make ________ Eiffel Tower model.
A．the twenty; a 8-meters-tall B．the twenties; an 8-meters-tall
C．twentieth; an 8-meter-tall D．twentieth; a 8-meter-tall
33．（2023下·江苏无锡·七年级校考阶段练习）Now children, turn to Page ________ and look at the ________ picture in Unit 1.
A．Fifth, one B．Five, one C．Fifth, first D．Five, first
34．（2023下·江苏泰州·七年级校考阶段练习）This is my ________ day to be here.
A．a second B．the second C．second D．two
35．（2023下·江苏扬州·七年级校联考阶段练习）I live on ________ floor in this building, just ten floors ________ you.
A．ten; below B．ten; under C．the tenth; below D．the tenth; under
36．（2022上·江苏徐州·七年级统考期中）—“Go downstairs, and you’ll get to the first floor.” says the worker in British Museum.
— “Oh, mom, that means we’ll get to the ________ floor .” says Jim, an American boy.
A．second B．third C．ground D．fourth
37．（2022下·江苏南京·七年级校考期中）—How old is your sister
—________. We had a special party for her ________ birthday last Sunday.
A．Nine; ninth B．Nine; the ninth C．Ninth; nine D．Ninth; the ninth
38．（2022下·江苏苏州·七年级统考期末）J. K. Rowling finished her ________ novel when she was ________.
A．six; forties B．sixth; forty C．sixth; fortieth D．six; forty
39．（2022·辽宁朝阳·统考中考真题）—It is Mom’s __________ birthday next Wednesday. What should we do
—What about buying her __________ flowers to show our love
A．forty; forty B．forty; fortieth C．fortieth; forty D．fortieth; fortieth
40．（2022下·江苏常州·七年级常州市第二十四中学校考期中）—What should we do now, Mr. Gao
—Please turn to Page ________ and look at the ________ line of the article.
A．Forty-nine; fifth B．Forty-ninth; five
C．Fourty-nine; fifth D．Fourty-ninth; five
提升专练
二、用所给单词的正确形式填空
41．（2022上·江苏扬州·七年级统考期末）I live on the floor of the tall building with my parents. (twelve)
42．（2023上·江苏无锡·七年级校联考期中）Our library is on the (one) floor in our school.
43．（2022上·江苏常州·七年级统考期中）Our art room is on the (one) floor of the classroom building.
44．（2022上·江苏无锡·七年级校联考期中）She had her (one) baby in 2008.
45．（2022上·江苏盐城·七年级统考期中）Let’s go to the library (one), and then have lunch together.
46．（2023上·江苏苏州·七年级苏州市振华中学校校考开学考试）There is an art room on the (one) floor.
47．（2023下·江苏扬州·七年级统考期末）I want to buy some books for my sister’s birthday. (nine)
48．（2023下·江苏扬州·七年级统考期末）He is enjoying the page of the book. (forty)
49．（2023下·江苏·七年级期末）He will celebrate his grandpa’s one (hundred) birthday next week.
50．（2023下·江苏·七年级期末）Peter and his wife live on the (eight) floor and they go up and down by lift.
51．（2023下·江苏徐州·七年级统考阶段练习）Today is my daughter’s birthday and she gets many presents. (twenty)
52．（2023下·江苏泰州·七年级统考阶段练习）Last week we held a party for his (15) birthday.
53．（2023下·江苏徐州·七年级徐州市第二十六中学校考阶段练习）Tree-planting Day is on the (twelve) of March every year.
54．（2023下·江苏泰州·七年级校考阶段练习）My best friend Sandy lives on the (nine) floor.
55．（2022下·江苏扬州·七年级统考期中）February is the month of the year. (two)
56．（2023下·江苏徐州·七年级校考阶段练习）The old lady lives on the (five) floor.
57．（2022下·江苏扬州·七年级校考期中）Three (four) of them are women teachers.
58．（2023下·江苏淮安·七年级校考阶段练习）They plan to have a big party to celebrate their daughter’s (nine) birthday.
59．（2023下·江苏·七年级期末）He is in his early (twenty).
60．（2023下·江苏·七年级期末）During the May Day holiday, we stayed in a mountain village with (thousand) trees around.
61．（2023下·江苏·七年级期末）More than two (hundred) trees are planted in our neighborhood every year.
62．（2022上·江苏扬州·七年级统考期末） a week, I go shopping with my mother in that shopping mall. (two)
63．（2022上·江苏扬州·七年级统考期末）You can spend two hours in the library. (many)
64．（2023下·江苏·七年级期末）He is in his early (forty).
65．（2023下·江苏无锡·七年级校考阶段练习）Daniel’s birthday is on the (nine) of March.
66．（2023下·江苏无锡·七年级校考阶段练习）Today is my sister’s (twenty) birthday.
67．（2023下·江苏泰州·七年级校联考阶段练习）—Which is the (twelve) month of a year
—December.
68．（2022下·江苏无锡·七年级统考期中）Beijing is the (one) city that holds both the Summer and Winter Olympics.
69．（2023下·江苏扬州·七年级校联考阶段练习）Today is his grandpa’s birthday. They will have a big dinner in the restaurant.(99)
70．（2023下·江苏无锡·七年级校联考阶段练习）It’s my mother’s (forty) birthday next Friday. I want to buy a present for her.
