2024年人教版中考英语复习数词的分类 课件

数词 numeral Contents 2 3 4 1 基数词、序数词、(分数、 小数、百分数) 基、序数词的用法 数词的句法功能 习题检测 数词 什么是数词? 表示事物数量的多少或先后顺序的词。 数词分为基数词和序数词两类。 基数词:表示数量多少的词,如:one, two, three等。 序数词:表示数目顺序的词,如:first, second, third等。 Part ONE 1 基数词、序数词、分数、 小数、百分数 1.基数词cardinal numbers one two three four five six seven eight nine ten eleven twelve 构成方式 【1】1-12各不同 thirteen fourteen fifteen eighteen nineteen 【2】13-19均以后缀-teen结尾。 twenty forty fifty eighty ninety 【3】20-90整十位均以后缀-ty结尾。 twenty-one thirty-two forty-three 【4】20-90表几十几,只变个位就可以,别忘了个位前加连字符。 1.基数词 构成方式 【5】百位数:个数基数词形式加“ hundred”,表示几百,在几十几与百位间加上and,英式英语要加and,美式英语则不用。 Eg.320 three hundred and twenty 120 one hundred and twenty 1.基数词 构成方式 【6】千位数以上: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。然后一节一节分别表示,两个逗号之间最大的数为百位数形式。 8 , 0 3 0 , 1 0 5 million thousand thirty one hundred and five eight 1.基数词 构成方式 注:hundred, thousand, million, billion的用法 1)当放在具体的数字后边时,表示具体 的“百、千、百万、十亿”时,不能用复数形式,可以直接修饰名词复数,如: 200: two hundred, two hundred students 2)当表示大概的“几百、几千、几百万、几十亿”时,前边不能用具体的数字或表示不确切时,用“复数形式+of”结构,如:数百学生 hundreds of students 口诀:前有数字,无s无of; 前无数字,加s加of. Practice 口诀:前有数字,无s无of; 前无数字,加s加of. ( )3.Basketball is so exciting that _ people play it for fun. A Three millions B. millions of C. millions D. Three millions of B 3458764 63 100 2023 50 19 186 7 857 600 10000 PRESS Practice Read and write. 点击中间press按钮,触发动画。所有的小喇叭都有音频,点击喇叭,触发动画,检查发音。【移动鼠标出现小手的地方才是触发器设置的地方操作指引:点击press,邀请学生读出数字,点击小喇叭,检查发音是否标准,最后邀请学生上台书写英文。 1. —What’s twenty and fifty? —It’s_ . A. fifty B. seventy C. eighty D. ninety 2. —People in our town planted _ trees on Tree Planting Day. — Good job! Everyone can do something to make our town greener. A. hundred B. hundred of C. hundreds D. hundreds of 3. It’s reported that nearly _ foreign kids joined a British boarding school last year, and a third of them came from China. A. nine thousand B. nine thousands C. nine thousand of D. nine thousands of B D A Practice 2.序数词ordinal numbers 1、基本形式: 1,2,3,特殊记; 8去t,9少e;ve要用f替; 见y变成i和e,后加th莫忘记; 若是遇上几十几,只变个位就可以。 BAY MAX Big Hero 6 is a 2014 film about the story of a young robotics prodigy named Hiro Hamada. I will always be with you. Tadashi I will always be with you. hiro I will always be with you. 2.序数词 1) 序数词第一、第二和第三为first,second和third,其他序数词的构成是在基数词后加th。例如: six sixth seven seventh ten tenth four fourth 2) fifth(第五)、 eighth (第八)、 ninth (第九)和twelfth (第十二)在拼法上有变化。 3) 二十、三十等基数词变为序数词时,要把y变成ie再加-th。例如: twenty twentieth forty fortieth 4) 基数词几十几变成序数词时,表示几十的数词不变,只把表示几的基数词变成序数词。例如: twenty-one twenty-first forty-five forty-fifth 5) 第一百、第一千、第一百万、第十亿都是在基数词后直接加?th构成。例如: 第一百 hundredth 第一千 thousandth 第一百万 millionth 第十亿 billionth 6)序数词的缩略形式是由阿拉伯数字加序数词的最后两个字母构成。例如: 1st,2nd,3rd,4th,21st,32nd,40th 1. My grandparents live in an old apartment with_ floors and they are on the_ floor. A. five; five B. five; fifth C. fifth; fifth D. fifth; five 2.My mother will be_ years old next week. I’m planning to buy a gift for her_ birthday. A. fourty; fourtieth B. forty; fortieth C. fourty; fortieth D. forty; fourtieth 3. —I like the number “9” best, because I think it stands for “long lasting”. —Me, too. So I choose_ floor to live on. A. nine B. ninth C. the nine D. the ninth B B Practice D 分数由基数词和序数词合成。分子用基数词,分母用序数词。分子是1时,分母(序数词)用单数形式;分子大于1时,分母用复数形式,序数词加-s。读带分数时,先读整数部分,再读分数部分。 3.分数 Two thirds of students are girls. Two thirds of food has been eaten. =two thirds=two out of three/ two in three Practice 3 4 ( ) A. three fours B. three fourths 1 8 ( ) A. one eighth B. one eight 5 12 ( ) A. five twelfths B. fifth twelfths B A A 整数与小数之间用小数点隔开。读小数时,每位数字(特别是小数点后面的)要单独读出。小数点读作point(点),零读作zero(或naught)。如果整数是零,往往不读出。 4.小数 Eg: one point five (1.5) ten point three five eight(10.358) Practice 4.7 10.7802 0.3727 four point seven ten point eight seven zero two zero point three seven two seven 58% 9% 23% 10% 5.百分数 在英语中,百分数通常用“基数词+percent”来表示。如: ten percent nine percent fifty-eight percent twenty-three percent 销售额 第一季度 第二季度 第三季度 第四季度 8.2 3.2 1.4 1.2 Part TWO 2 基、序数词的用法 构成:①基数词+years old ②in+one's+基数词复数 ③at the age of+基数词 Eg:16 years old,in one's fifties,at the age of 5. 表示几十年代,“in the +基数词复数” 在 20 世纪 80 年代: in the 1980s = in the 1980's 1.表年龄 一.基数词的用法 2.表年代 类型 时刻 顺读法 逆读法 逆读法构成方法 整点 6:00 six (o'clock) / / 正好 30 分 6:30 six thirty half past six half past+钟点数 一刻钟 6:15 six fifteen a quarter past six a quarter past+钟点数 三刻钟 6:45 six forty-five a quarter to seven a quarter to+(原钟点数+1) 少于 30 分钟 6:05 six o five five past six 分数+past+钟点数 超过 30 分钟 6:52 six fifty-two eight to seven (60-原分钟数)+to+ (原钟点数+1) 口诀:小于30用past,大于30用to; 先分再时,past时不变to时加1。 3.表时间 口诀解析:分钟小于30要用past; 分钟大于30要用to;先读分钟再读时钟。用past时时针不变照抄,用to时要在原时钟点数+1,另外分钟按照60去减。 in 2023 (in twenty twenty-three) 2023 in July on 1st July,2023 年 四位数年份常分为两组来读;年份前用介词 in; 月 首字母要大写,月份前用介词 in; 日 年、月、日连用时常在年份前加逗号, 具体到某天介词用 on。 4.表日期 1.序数词前一般要加定冠词 the。 Can you give me the second chance? 二.序数词的用法 2.表示“又一,再一”时,序数词前一般要加定冠词 a/an(相当于another)。 Can you give a second chance? 3.下列四种情况,序数词前不用冠词: ①序数词前已有物主代词或名词所有格时,不能再用冠词。 This is Mary’s second visit to China. ②表示比赛或考试的名次时,通常 省略定冠词。 He was (the) first in the English exam. ③序数词被用作副词时不用冠词。 I have to finish my homework first. 在某些习语中,不用冠词。 at first 起初;first of all 首先; at first sight 乍一看。 This room is twice as big as that one. Tom runs three times faster than I do. This rope is three times the length of that one. 1.倍数+as+adj.(adv.)+as 是…几倍大,比…多…几倍(as…as 和…一样…) 2.倍数+adj.(adv.)比较级+than 比…大(快、多…)…倍 3.倍数+the size(height,length, width…)+of 是…的…倍 其他用法 表倍数 1倍 once 2倍 twice 3倍 three times 多倍基数词+times 中文 英语 用法 第一课/ 第二单元 Lesson One/1=the first lesson Unit Two/2=the second unit (1)名词+基数词= the+序数词+名词 (注意大小写) (2)如果编号的数字 比较长,一般用“名 词+基数词”表示 第8页 Page Eight/8=the eighth page 37路公交车 Bus No.37=the No.37 bus 520 房 Room 520 九年级 6 班 Class 6, Grade 9 =Class Six,Grade Nine 第二中学 No.2 Junior High School 其他用法 表编号 Part THREE 3 句法 功能 1、作主语 Eight is my lucky number. 2、作定语 It was the third time I had been there. 3、作表语 Five plus seven is twelve. 4、作宾语 The dress cost me several thousand. 5、作同位语 We two can help you. Part THREE 4 习题 检测 I.写出下列数词。 5_ 90_ 115_ 200_ nine_ twelve _ eight _ twenty-one_ five +seven=_ six+_=ten five +six =_ _-seven =three _-five=four fifty -_=five tenth _(写基数词) twentieth _ (写基数词) nineteenth_ (写基数词) thirty-first _(写基数词) Practice 1. _ of the sand in that area _ covered with trees and grass. A. Two fifths, are B. Two fifth are C. Two fifth, is D. Two fifths, is 2. About_ of the teachers in our school were born in the _. A. three five:1996 B. three fifths: 1990s C three fifth: 1997 D third fifths: 1990s 3.I hear your friend is visiting Sanya again, Is it the second time for him? -Yes, and he will come for _ time next spring. A. a third B. a second C. the third 4.—lf 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 D B A B Practice II.单项选择。 5._ the students in our school are girls. A Three hundred B. Three hundred of C. Three hundred D. Three hundreds of 6. He is only _ _ boy. He isn't old enough to take care of himself. A. a 8-year-old B a 8-years-old C. an 8-year-old D.an 8-years-old 7. I think _of the materials listened to at the beginning of the exam _ easy. A. three fourths, is B. third four, are C three fourths, are D three fourth, are B c D Practice Practice I.单词拼写 1.September is the _(第九) month of a year. 2.Though Ann won _ _ (第三) place in the running race,she felt happy. 3.To make a soccer team,we need _(二十三) players in all. 4.My grandpa is _(八十) years old. He keeps doing exercise every day. 5.She is nineteen,and next year she is going to celebrate her _(第二十) birthday. ninth third twenty three eighty twentieth IV.用括号中所给单词的适当形式填空 1.Lily visited Baise twice. The _ (one) time is in summer and the second(two) time is in winter. 2.My cousin got a story book from Tina on his _(eight) birthday. 3.He retired(退休) on his _(sixty) birthday. 4.We printed two _(hundred) and sixty invita tions. 5.Our English teacher is in his _(thirty). first eighth sixtieth hundred thirties Practice THANKS Practice makes perfect! $$