课件38张PPT。第4讲 数词一、写出下列词的序数词1.one ________
3.three ________
5.eight ________
7.twelve ________2.two ________
4.five ________
6.nine ________
8.twenty________firstsecondthirdfiftheighthninthtwelfthtwentieth二、完成句子，每空一词1．It's ___________ ___________ ___________ (40 分钟的步行路程) from our school to the park.2 ． Most students watch TV________ ________ ________________ (两到三次) a week.3．Today we are going to learn________ ________ ________(第十二课)．4．He got married ________ ________ ________ (在他二十多岁时)．5．________ ________ ________ (数以千计的人) crowdedinto the beach.40 minutes' walk/a 40-minute walktwo or threetimesThe twelfth lesson in his twentiesThousands of people三、单句改错1．Three fifth of the answers are right.____________
2．It is my the first bag.________3．Can you show me the twentyth book？_________________
4．There are three hundreds trees behind the playground.____________________5．I have been there one time._____________fifth→fifths去掉thetwentyth→twentiethhundreds→hundredone time→once ★再现中考★
基数词题1(2014 年广东 )It's never too old to learn.Karl Marxbegan to learn English in his________.A．the fiftieth
C．fiftyB．fiftieth
D．fifties [点拨]选D。“in＋one's＋整十基数词复数”表示“在某人
几十多岁时”。题2(2014 年佛山)Batman and Spiderman are ________ ofthe most famous American cartoons.A．twoB．secondC．the second [点拨]选A。句意：《蝙蝠侠》和《蜘蛛侠》是美国最著名
的两部卡通片。固定结构：基数词＋of＋形容词的最高级。题3(2013 年广东 )—Excuse me, sir.Here's a package forLin Tao.Which room does he live in?
—________.A.308 Room
C. The Room 308B．Room 308
D．The 308 Room[点拨]选B。表达房间号：Room＋房间号(基数词)。序数词题(2012 年广东)—How was your weekend? —Great! It was my grandfather's ________ birthday.
We enjoyed ourselves.A．seventy
C．the seventiethB．seventieth
D．seventeenth [点拨]选B。生日前用序数词，意为“我爷爷的第七十个生
日”。基数词的构成 1.1－12 对应的英文单词是独立单词，必须分别记忆。
2.13－19 对应的英文单词是在 3－9 对应的英文单词后加
后缀-teen 构成。其中 13—thirteen, 15—fifteen, 18—eighteen 需
要特殊记忆。 3．20－90 整十的两位数对应的英文单词均由 2－9 对应的
英文单词加后缀-ty 构成。其中要特别注意 twenty, thirty, forty,
fifty, eighty 的拼写。 4．21－99 非整十的两位数对应的英文单词是由“十位数
对应的英文单词＋个位数对应的英文单词”组成，中间用连字
符“-”连接，即先说“几十”，再说“几”。如：23—twenty-three46—forty-six 5．101－999 的三位数的英语读法为：先说“几百”，再
加 and，再读后两位数或一位数。如：
412—four hundred and twelve
206—two hundred and six 6．四位以上的数字要借助科学计数法：先从后面的个位数
往前数，每三位加一个逗号“，”，第一个逗号前是 thousand
(千)，第二个逗号前是 million (百万)，第三个逗号前是 billion (十
亿)。读的时候由前往后读。如：2,011—two thousand and eleven4,739—four thousand, seven hundred and thirty-nine8,263,165—eight million, two hundred and sixty-threethousand, one hundred and sixty-five3,000,000—three million 注意：英语的基数词中没有单独表示“万”“亿”的单位
词，而是分别用 thousand (千)和 million (百万)来表示。如：1 万—ten thousand50 万—five hundred thousand
1 亿—100 million
10 亿—1 billion典题分析题(2013 年黄冈)—What should we do now, Mr.Clark? —Please turn to Page ________ and look at the ________
picture.A．Twelve; fifth
C．Twelve; fiveB．Twelfth; fifth
D．Twelfth; five [点拨]选A。表示多少页要用基数词，十二页表示为Page
Twelve；根据句意“请翻到十二页并看看第五幅图片。”可知
第二个空用序数词fifth。基数词的用法1．基数词在句中可作主语、宾语、表语、定语和同位语。如：Two of the books are about American history. 这些书中有两本是有关美国历史的。(作主语)We need three altogether.我们总共需要三个。(作宾语)
I'm eighteen.我 18 岁。(作表语)Ten people will come to the party.十个人要来参加聚会。(作定语)We four will go for a picnic.我们四个将去野餐。(作同位语)2．大于 1 的基数词表示数量时，后面用名词复数形式。如：
I have two sisters.我有两个妹妹。I'd like three pieces of bread.我想要三片面包。 3．基数词也可以用来编号，即“名词＋基数词＝the＋序
数词＋名词”，要注意字母的大小写和单词的顺序。如：Lesson One＝the first lesson 第一课
Book 3/Book Three 第三册书
Room 602 602 房间Bus No.2/the No.2 bus 2 路公共汽车
No.103 Middle School 第 103 中学
Class 3 Grade 9 九年级三班4．hundred, thousand, million, billion 的用法。(1)“基数词＋hundred/thousand/million/billion”表示确定数目， 其自身用单数形式，不加-s。如：five hundred students 五百名学生 (2)表示大概(不确定)数目时，要在它们的词尾加-s，且要与
of 连用，用“hundreds/thousands/millions/billions＋of＋名词复
数”形式表达。如：thousands of 数以千计的，成千上万的
millions of 数以百万计的，数百万的注意：此种结构前面可以用 many, several, a few 修饰。如：many hundreds of birds 数以百计的小鸟 5．“基数词＋单位名词＋形容词”可用来描述事物的形态
特征，且单位名词的单复数根据基数词而定，此结构常作表语。
也可以用“基数词＋单位名词＋名词/形容词”构成复合形容
词，每个词之间用连字符“-”连接。此结构中的单位名词和名
词均不能用复数，也不能用所有格形式，此结构常作定语。如：
It's 100 metres deep/long/wide/tall (high)．它有 100 米深/长/
宽/高。
a two-hundred-day adventure trip 两百天的冒险旅程
a two-metre-long table 一张两米长的桌子
a ten-minute walk＝ten minutes' walk 十分钟的路程a sixteen-year-old boy一个 16 岁的男孩 6．表示时间。
(1)“整点”的表达：基数词＋o'clock (可省略)。如：
seven (o'clock) 7：00
(2)“几点几分”的表达
①顺读法：直接用基数词表示，即“钟点数＋分钟数”。
如：two fifty-five 2：55nine twenty 9：20 ②逆读法：当分钟数小于或等于 30 时，用介词 past，即“分
钟数＋past＋钟点数”；当分钟数大于 30 时，用介词 to，即“(60
－分钟数)＋to＋(钟点数＋1)”，表示“差几分几点”。如：ten past ten 10：10
ten to nine 8：50thirty past eight 8：30
twenty to three 2：40注意：(1)表示几刻钟常用“quarter”。如：a quarter past two 2：15a quarter to eight 7：45(2)表示半小时常用“half”。如：half an hour 半小时half past six 6：30one and a half hours/one hour and a half 一个半小时7．表示日期。 表示“年、月、日”时，“年”用基数词，“日”用序数
词，并常在“年”前加逗号。只表示“年”和“月”时中间可
不用逗号。在英语中，年、月、日的排列顺序为“月、日、年”(美
式)或“日、月、年”(英式)。如：August 15th, 2012 (美)/15th, August, 2012 (英) 2012 年 8 月15 日in December 2010 在 2010 年 12 月on the 8th of August, 2008 在 2008 年 8 月 8 日注意：(1)在年月日的书写中，表示几号的序数词前不写the，但在读法中要把 the 读出来。如：15th, August, 2012 读作：the fifteenth, August, two thousandand twelve(2)年的读法1998 读作：nineteen ninety-eight
1806 读作：eighteen and six2007 读作：two thousand and seven 或twenty zero seven8．表示年代。如：in the 1980's/1980s 在 20 世纪 80 年代
9．表示年龄。(1)基数词(＋years old)。如：He is eleven (years old) now.他现在 11 岁。
(2)at the age of＋基数词。如：At the age of ten he came to Zhongshan.他 10 岁的时候来到中山。(3)“基数词＋year/month/day＋old”构成复合形容词，中间用连字符连接，表示“……岁/月/天的”。如：a three-month-old baby 一个三个月大的婴儿(4)“in＋one's＋整十基数词复数”表示“在某人几十多岁时”。如：in his thirties 在他 30 多岁时10．表示加、减、乘、除等运算。如：
Eight minus five is three.八减五等于三。
Two times three is six.二乘三等于六。11．表示次数、倍数。“一次”是 once, “两次”习惯上用twice, 其他的用“基数词＋times”表示。如：four times 四次/四倍
ten times 十次/十倍This tree is three times as tall as that one.这棵树是那棵树的三倍高。 12．表示非整数。
(1)分数的表达法：分子用基数词，分母用序数词；分子大
于 1 时，分母要加-s。如：
one second 或 a/one half 二分之一
two thirds 三分之二
one fourth/a quarter 四分之一
three fourths/three quarters 四分之三
(2)小数的表达法：小数点用“point”。如：three point six 3.6(zero) point four 0.4(3)百分数的表达法：“百分之……”用“percent”。如：fifty percent 50% 注意：分数、小数、百分数在修饰名词时常用 of 和名词连
接，此时谓语动词的单复数由后面的名词决定。如：
Four fifths of the work is finished.完成了五分之四的工作。
Twenty percent of the students are out of school. 百分之二十的学生辍学了。典题分析题1(2013 年雅安)We planted ________ trees last year.A．hundreds of
C．five hundredsB．hundred of
D．five hundred of [点拨]选A。hundred, thousand, million 等数词与具体数字连
用时，用单数形式，后面不加-s；若与 of 连用表示概数时，后
面必须加-s，且不可与数词连用。hundreds of 意为“成百上千
的”，所以选 A。题2(2013 年南宁)They are the students of ________.A．grade 7
C．7th gradeB．Grade 7
D．Grade 7th[点拨]选B。表示几年级用“Grade＋基数词”，故选B。题3(2012 年铜仁)About ________ of the students in GradeNine this year were born in the________.A．three five; 1996
C．third fifth; 1997B．three fifths; 1990s
D．third fifths; 1990s [点拨]选B。句意：今年大约五分之三的九年级学生出生在
九十年代。分数的分子用基数词，分母用序数词；分子大于 1
时，分母要加-s；表示年代的要在后面加“s”。故选B。序数词的构成及用法一、序数词的构成序数词一般是在基数词后加-th 构成。 1 ． 序数词中的第一至第十九，除了第一 (first) 、 第二
(second)、第三(third)是独立单词外，其余一般是由基数词后加
-th 构成。但其中要特别注意第五(fifth) 、第八(eighth) 、第九
(ninth)、第十二(twelfth)的拼写。2．表示“几十”的整十两位数的序数词是先将词尾的 y 变为 ie，再加-th。如：twenty—twentieth thirty—thirtieth 3．二十以上的非整十多位数，只需将个位数变成序数词即
可。如：
forty-three—forty-third
one hundred and sixty-eight—one hundred and sixty-eighth
4．hundred, thousand 和 million 的序数词分别为 hundredth,
thousandth, millionth。
5．序数词的缩写可以用“对应的阿拉伯数字＋词尾最后两
个字母”来构成。如：first—1stsecond—2ndthird—3rdfifth—5thtwenty-first—21st基数词变序数词口诀 基变序，有规律，末尾加上-th；一、二、三特殊记，词
尾字母t d d; 八加h，九去e，ve 要用f 替；以y 结尾变ie，后
跟-th 莫忘记；若想表示第几十几，只变个位就可以。二、序数词的用法1．序数词在句中可作主语、宾语、定语和表语。如：
The second is what I really need.第二个是我真正需要的。(作主语)He chose the second.他选了第二个。(作宾语)We are to carry out the first plan.我们将执行第一个计划。(作定语) 2．序数词前面一般要加定冠词 the，后面一般用单数名词。
如：
He lives on the second floor.他住在二楼。
注意：(1)当序数词前有形容词性物主代词或名词所有格时，
就不用 the；当序数词作状语时不用 the。如：
He's my first friend.他是我的第一个朋友。
She always gets to school first.她总是第一个到学校。
(2)序数词与名词构成的复合形容词前不用 the。如：
a second-hand bookstore 一家二手书店
(3)一些习惯用语中的序数词前也不用 the。如：at first 首先，起初first of all 第一，首先自始至终at first sight 乍一看到，第一眼from first to last3．序数词有时可与不定冠词 a 连用，表示数量上“又一，再一”。如：He has been to London twice.He is going there a third time.他已去过伦敦两次。他打算再去一次。4．“定冠词＋序数词＋世纪(century)”表示“几世纪”，可转化成“定冠词＋基数词＋'s/s”。如：
the twentieth century/the 1900's/1900s 20 世纪典题分析题1(2014 年天津)________ month of the year is May.A．Two
C．FiveB．The second
D．The fifth [点拨]选D。句意：一年中的第五个月是五月。表示顺序要
用序数词。题2(2013 年安顺)To finish the task, we've tried three times,and after dinner we'll try ________ time.A.the fourth
C.fourthB.a fourth
D.four [点拨]选B。句意：为了完成任务，我们已经尝试了三次，
晚饭后我们将再尝试一次。“a/an＋序数词”表示“再……，
又……”。其他重要的表达方式three or five times三五次first name名，名字second-hand 二手的，用过的ones and twos 三三两两sixes and sevens 乱七八糟
two or three days＝two days or three 两至三天
two more hours＝another two hours 另外两小时第4讲 数词
考点1 基数词
( )1.(2014年宜宾)David Beckham has ________ children. Brooklyn Beckham is his ________ son.
A．third; first B．three; one C．three; first D．third; one
( )2.(2014年重庆B卷)Yesterday ________ people came to the town to watch the car race.
A.hundreds B．hundred C．hundreds of D．hundred of
( )3.(2012年齐齐哈尔)A ________ girl named Dong Xinyi looked after her disabled father.
A．three-year-old B．three-years-old C．three years old
考点2 序数词
( )1.(2014年聊城)Christmas Day is on ________ of December.
A．twenty-five B．the twenty-five C．twenty-fifth D．the twenty-fifth
( )2.(2013年济南)Mother's Day is on the ________ Sunday in May every year.
A.two B．second C．six D．sixth
( )3.(2013年益阳)—How old is your daughter?
—________.We had a special party for her ________ birthday yesterday.
A.Nine; nine B．Nine; ninth C．Ninth; ninth
( )1.(2014年龙东)Tom, a ________ boy, can speak English quite well.He wants to learn________ language next term.
A.twelve-years-old; second B．twelve year old; the second
C.twelve-year-old; a second
( )2.(2014年龙东)________ fans would like to go to Brazil to watch the World Cup.
A.Million of B．Millions of C．Millions
( )3.(2014年黔西南)—Which is the biggest number of the four?
—________.
A．One third B．Two thirds C．A half D．A quarter
( )4.(2014年东营)When he arrived at the airport, Lee Minho found that ________ fans were waiting for him there.
A.hundred B．hundreds C.hundred of D．hundreds of
( )5.(2014年呼和浩特)—How far is it from Tianjin to Changsha?
—It is a ________ flight from Tianjin to Changsha.
A.2-hour-long B．2-hours-long
C.2 hours' long D.2 hour long
( )6.(2013年莆田)—Let's go to the bookstore at half past nine tomorrow morning.
—It's too late.Let's make it ________.
A．a quarter to nine B．twenty to ten C．a quarter to ten
( )7.(2013年邵阳)________ of our classmates are good at basketball.
A．Three quarters B．Three fourth C．third four
( )8.(2013年青岛)—________ of volunteers will be needed for 2014 International Horticulture Exposition in Qingdao.
—Let's go and ________ them.
A.Thousands; join B．Thousand; be a member of
C.Three thousand; take part in D．Thousands; be in
( )9.(2013年湛江)—What day is it today?
—It's Monday, and it's my ________ birthday.
A．fifteen B．fifteenth C．the fifteen D．the fifteenth
( )10.(2013年梅州)Unit ________ is easy but ________ unit is difficult.
A．Sixth; seven B．Six; seven
C．Sixth; the seventh D．Six; the seventh
( )11.(2012年无锡)The ________ action film has attracted millions of young people to the cinema.
A.130-minute B．130-minutes
C.130 minute D．130 minutes
( )12.(2012年佛山)Three students ran faster than Lily in the race.Lily was ________.
A．the fourth B．four C．the third
( )13.(2012年深圳)—Mum, I got ________ place in the English Speech Competition.
—________！That's really good news, dear!
A．the first; Congratulation B．first; I'm sorry to hear that
C．the first; Congratulations D．first; What a pity
( )14.(2012年深圳)—What does the fresh juice contain?
—________ of the juice ________ orange.It's very pure.
A．Four-fifth; are B．Four-fifths; are
C．Four-fifth; is D．Four-fifths; is
( )15.(2012年湛江)—Is Beijing a city with a long history?
—Of course.And after the Olympic Games, ________ people came to Beijing for a visit during the vacation.
A．thousands of B．thousand
C．five thousands D．five thousand of
( )1.________ volunteers are coming to London for the Olympics next month.
A.Thousands of B．A thousand of
C．Ten thousands D．Ten thousands of
( )2.—Excuse me, which is the way to the museum?
—Sorry, I don't know.This is my________ time here.
A．one B．second C．third D．first
( )3.Did you know that the earth is home to ________ animals.
A．million B．millions C．million of D．millions of
( )4.There are ________ days in a week and Tuesday is ________ day of the week.
A．seven; third B．seven; the third
C．seventh; three D．the seventh; three
( )5.Susan lives on the ________ floor and we are neighbours.
A．four B．fourth C．fourteen D．forty
( )6.—How old is your daughter?
—________.We had a surprise party for her________ birthday last Saturday.
A．Twelve; twelfth B．Twelfth; twelve
C．Twelve; twelve D．Twelfth; twelfth
( )7.You can see ________ stars if you go out at night.
A.million B．thousand of
C．hundreds D．millions of
( )8.About ________ students in our class can describe that place in English.
A．three-fifths B．three-fifth C．third-five D．third-fifths
( )9.Nine ________ pounds a week? That's very good.
A．hundred of B．hundreds of C．hundreds D．hundred
( )10.Shakespeare was born in ________.
A．1660s B．1660's C．the 1660 D．the 1660's
( )11.Bill said they were going to have ________ holiday.
A．a two-week's B．a two-week C．two weeks' D．two weeks
( )12.My father left home at about ________.
A．six thirty B．thirty six C．thirty to six D．six past thirty
( )13.—Where are the students?
—Are they in________？
A．the Room 406 B．Room 406 C．the 406 Room D．406 Room
( )14.—Which is the smallest number of the four?
—________.
A．A half B．A quarter C．Two-thirds D．Three-fourths
( )15.—Can you write the number eighty-five thousand, six hundred and twenty-six?
—Yes, it is ________.
A．85,662 B．58,662 C．85,626 D．58,626
( )16.Dick, it is the ________ time in ________ days that you've made the same mistake.
A．two; three B．second; three C．two; third D．second; third
( )17.He wrote his ________ novel when he was ________.
A.five; fifties B．fifth; fifty C．fifth; fiftieth D．five; fiftieth
( )18.—How long will you stay there?
—For________.
A．one and two days B．one and two day
C．one or two day D．a day or two
( )19.We all think that the ________century will bring us more hopes.
A．twenty-first B．twentieth-first C．twenty-one D．twentieth-one
( )20.—What's the date today?
—It's________.
A．Saturday B．June C．June 1st D．June 2st
第4讲 数词
考点·实战演练
考点1
1．C 第一个空表示数目，应用基数词，第二个空表示“第……个孩子”，用序数词，故选C。
2．C 直接修饰people且前面没有具体数字修饰，hundred用复数且要加介词of。
3．A a three-year-old girl 意为“一个三岁的女孩”，three-year-old为形容词，意为“三岁的”。
考点2
1．D 表示日期应用序数词，且前面要用定冠词修饰。
2．B 母亲节是在每年五月的第二个星期天。根据the判断使用序数词。
3．B nine是基数词，只表示数目，ninth是序数词，表示顺序。表示年龄用基数字，表示第几个生日派对用序数词，故选B。
真题·体验感悟
1—5 CBBDA 6—10 AAABD 11—15 AACDA
模拟·巩固提升
1—5 ADDBB 6—10 ADADD 11—15 BABBC
16—20 BBDAC
