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      初中英語數(shù)詞教案

      時(shí)間:2019-05-13 21:35:19下載本文作者:會(huì)員上傳
      簡介:寫寫幫文庫小編為你整理了多篇相關(guān)的《初中英語數(shù)詞教案》,但愿對你工作學(xué)習(xí)有幫助,當(dāng)然你在寫寫幫文庫還可以找到更多《初中英語數(shù)詞教案》。

      第一篇:初中英語數(shù)詞教案

      數(shù)詞

      1.基數(shù)詞

      表示數(shù)目的詞稱為基數(shù)詞。其形式如下: A.從1——10 one,two,three,four,five,six,seven,eight,nine,ten. B.從 11——19 eleven,twelve,thirteen,fourteen,fifteen,sixteen,seventeen,eighteen,nineteen.

      這里除 eleven,twelve,thirteen,fifteen,eighteen為特殊形式外,fourteen,sixteen,seventeen,nineteen都是由其個(gè)位數(shù)形式后添加后綴-teen構(gòu)成。C.從 21——99 整數(shù)幾十中除twenty,thirty, forty,fifty,eighty為特殊形式外,sixty,seventy,ninety都是其個(gè)位數(shù)形式后添加后綴-ty構(gòu)成。表示幾十幾時(shí),在幾十和個(gè)位基數(shù)詞形式之間添加連字符“-” 21 twenty-one

      seventy-six D.百位數(shù)

      個(gè)數(shù)基數(shù)詞形式加“hundred”,表示幾百,在幾十幾與百位間加上and.

      a hundred and one

      320 three hundred and twenty

      648 six hundred and forty-eight E.千位數(shù)以上

      2,648 two thousand six hundred and forty-eight F.hundreds of 數(shù)百

      thousands of

      數(shù)千

      比如 There are hundreds of people in the hall.大廳里有數(shù)以百計(jì)的人。G.表示人的不確切歲數(shù)或年代,用幾十的復(fù)數(shù)形式表示。He became a professor in his thirties. 他三十多歲時(shí)成為了教授。序數(shù)詞的構(gòu)成及其說明

      1)序數(shù)詞第一、第二和第三為first,second和third,其他序數(shù)詞的構(gòu)成是在基數(shù)詞后加th。例如:

      six→sixth seven→seventhten→tenth four→fourth

      2)five------fifth(第五)、eight------eigth(第八)、nine-------ninth(第九)和twelf-----twelfth(第十二)

      3)二十、三十等基數(shù)詞變?yōu)樾驍?shù)詞時(shí),要把y變成ie再加-th。例如:

      twenty→twentiethforty→fortieth

      4)基數(shù)詞幾十幾變成序數(shù)詞時(shí),表示幾十的數(shù)詞不變,只把表示幾的基數(shù)詞變成序數(shù)詞。例如:

      twenty-one→twenty-first

      forty-five→forty-fifth

      5)第一百、第一千、第一百萬、第十億都是在基數(shù)詞后直接加th構(gòu)成。例如:

      hundred→hundredth第一百 thousand→thousandth第一千

      6).序數(shù)詞的縮略形式是由阿拉伯?dāng)?shù)字加序數(shù)詞的最后兩個(gè)字母構(gòu)成。例如:

      1st,2nd,3rd,4th,21st,32nd,40th

      序數(shù)詞前面要加定冠詞the。例如the first time

      時(shí)刻表示法

      1.表示幾點(diǎn)鐘用基數(shù)詞加可以省略的o`clock

      5:00 讀作 five o`clock 或 five 2.表示幾點(diǎn)過幾分,在分鐘后加past,再加小時(shí)

      five past seven 七點(diǎn)過五分

      half past six 六點(diǎn)半 a quarter past eight 八點(diǎn)過一刻 3.表示幾點(diǎn)差幾分,在分鐘后面加to,再加小時(shí)

      ten to eight 差十分八點(diǎn)(七點(diǎn)五十分)

      a quarter to twelve 差一刻十二點(diǎn)(十一點(diǎn)四十五分)

      twenty to six 差二十分六點(diǎn)(五點(diǎn)四十分)在日常生活中,常用下列簡單方法表示時(shí)間。以小時(shí)、分種為單位分別讀出數(shù)字。

      6:31 讀作 six thirty-one

      14:03 讀作 fourteen o three

      23:55 讀作 twenty-three fifty-five 注:時(shí)刻表上的時(shí)間大多采用24小時(shí)表示法,這樣就不需要用a.m.表示上午,p.m.表示下午了。年代用定冠詞及基數(shù)詞表示的世紀(jì)加十位整數(shù)的復(fù)數(shù)形式構(gòu)成

      in the 1930`s(in the thirties of the twentieth century或 in the nineteen thirties)在二十世紀(jì)三十年代 in the 1860`s(in the sixties of the 19th century或 in the eighteen sixties)

      由數(shù)詞和其他名詞構(gòu)成的名詞性短語作定語時(shí),其中的名詞用單數(shù)形式,名詞性短語中各部分間要用連字符“-”來連接。She’s a sixteen-year-old girl.

      第二篇:初中英語—數(shù)詞

      初中英語—數(shù)詞

      數(shù)詞分為基數(shù)詞和序數(shù)詞兩種。表示數(shù)目或數(shù)量多少的詞叫基數(shù)詞;表示數(shù)目順序的詞叫序數(shù)詞。

      一.基數(shù)詞

      1.基數(shù)詞就注意以下幾點(diǎn):

      (1)幾十幾的基數(shù)詞的十位數(shù)與個(gè)位數(shù)之間要用連字符“-”連接。如:

      eighty-five 85

      twenty-six 26

      (2)三位數(shù)的基數(shù)詞須在百位和十位(若無十位則和個(gè)位)之間用and連接。如:three hundred and sixty-five 365

      two hundred and six 206

      (3)基數(shù)詞的復(fù)數(shù)形式。當(dāng)基數(shù)詞hundred, thousand, million, billion等詞前有具體數(shù)詞或several修飾時(shí),必須用單數(shù)。如:

      several hundred year’s ago幾百年前

      two thousand students兩千個(gè)學(xué)生

      2.基數(shù)詞的特殊用法:

      (1)表示“幾十年代”或“幾十歲”時(shí),用逢十的基數(shù)詞的復(fù)數(shù)形式。如:

      in the 1990’s 20世紀(jì)90年代

      in one’s twenties在某人20多歲時(shí)

      (2)用在習(xí)語中。如:

      in twos and threes三三兩兩地

      二.序數(shù)詞

      序數(shù)詞應(yīng)注意的幾點(diǎn)事項(xiàng):

      1.多位數(shù)的基數(shù)詞變成序數(shù)詞時(shí),只需將末位基數(shù)詞變成序數(shù)詞,前邊的基數(shù)詞不變。如:forty-two 42 forty-second第42

      nine-hundred 900 nine-hundredth第900

      2.當(dāng)序數(shù)詞用阿拉伯?dāng)?shù)字表示時(shí),必須在數(shù)字后加上序數(shù)詞的最后兩個(gè)字母。如:21st第21

      32nd第32

      3.序數(shù)詞前一般要用定冠詞the,如果序數(shù)詞前用a或an時(shí),則表示“又一;再一”(沒有具體范圍的限制)。如:

      Though he had failed twice, he wanted to try a third time.盡管他已失敗了兩次,他還想再試一次。

      The little monkey had had three apples, and he wanted to eat a fourth one.那只小猴子已經(jīng)吃了3個(gè)蘋果,他還想再吃一個(gè)。

      三.分?jǐn)?shù)和百分?jǐn)?shù)

      1.分?jǐn)?shù)

      (1)分?jǐn)?shù)的分子用基數(shù)詞,分母用序數(shù)詞。如:

      one fifth五分之一

      one tenth十分之一

      (2)當(dāng)分子大于1時(shí),分母用序數(shù)詞的復(fù)數(shù)。如:

      two thirds三分之二

      five eighths八分之五

      (3)當(dāng)分子是1時(shí),可以用one也可以用a。如:

      a second = one second

      a third = one third

      (4)當(dāng)分母是2和4時(shí),分別可以用half和quarter代替。如:

      a half二分之一

      three quarters四分之三

      2.百分?jǐn)?shù)

      百分?jǐn)?shù)用percent表示。如:

      forty percent百分之四十

      three percent百分之三

      3.分?jǐn)?shù)、百分?jǐn)?shù)與主謂一致

      分?jǐn)?shù)、百分?jǐn)?shù)的考查往往和主謂一致相聯(lián)系。當(dāng)分?jǐn)?shù)、百分?jǐn)?shù)修飾可數(shù)名詞的復(fù)數(shù)時(shí),謂語動(dòng)詞用復(fù)數(shù)形式;當(dāng)分?jǐn)?shù)、百分?jǐn)?shù)修飾不可數(shù)名詞時(shí),謂語動(dòng)詞用單數(shù)形式。如:Eighty percent of the students in our school come from Henan.我們學(xué)校百分之八十的學(xué)生來自河南。

      Three fourths of the students in my class are interested in English.我們班四分之三的學(xué)生對英語感興趣。

      Two thirds of the water on the earth is sea water.地球上三分之二的水是海水。

      四.倍數(shù)的表示法

      1.表示“幾倍大小(長短;數(shù)量)”,由“倍數(shù)+ the size(length, amount...)”結(jié)構(gòu)組成。如:The earth is forth-nine times the size of the moon.2.表示“……比……大幾倍”,由“倍數(shù)+形容詞(副詞)比較級(jí)+ than +被比較部分”結(jié)構(gòu)組成。如:

      This box is three times bigger than that one.3.表示“……是……倍”,由“倍數(shù)+ as +形容詞+ as +被比較部分”結(jié)構(gòu)組成。如:Our factory is twice as big as theirs.練習(xí)※答案

      ()1.Lincoln was born on ________.A.February 12, 1809B.1809, February 12C.1809, 12 FebruaryD.February 1809,12

      ()2.A _______ boy can sing the English song very well.A.ten-year-oldB.ten years oldC.ten-year-oldD.fifth years old

      ()3.An hour later, _____ minister was sent to see the “magic cloth” woven by those two men.A.twoB.the secondC.the twoD.second

      ()4.Abraham Lincoln was _______ President of the United States.A.16B.the 16C.16thD.the 16th

      ()5.Do you think there is any room for us ________ ?

      A.twoB.the twoC.secondD.the second

      ()6.How many students are there in your class?

      ________.A.Twenty nineB.Thirty and twoC.Forty-fiveD.fifties

      ()7.Which number is wrong? _______.A.NinetyB.NinteenC.NinthD.Nineteenth

      ()8.The People's Liberation Army was founded _______.A.on August 1, 1927B.in 1927, 1 AugustC.on August 1st, 1927D.in August 1, 1927

      ()9.The number 4,123 is read _______.A.four thousand one hundred and twenty-threeB.four thousand and one hundred twenty-three

      C.four thousand and a hundred and twenty-threeD.four thousands a hundred and twenty-three

      ()10.The old professor still works hard though he is _________.A.in his sixtyB.in his sixtiesC.in sixtiesD.in the sixty

      ()11.This classroom is ________ ours.A.three times big asB.as three times big asC.three times as big asD.as big three times as

      ()12.The basketball team of our school ranks ________ in the match.A.threeB.thirdC.the threeD.the third

      ()13.Which is the car that he drives? It's ________.A.fifty twoB.the fifty-two carsC.the car fifty fourD.the fifty-fourth car

      ()14.Which of the following is wrong? ________.A.He is a fifteen-year-old boy.B.He is at the age of 15.C.He is a boy of 15.D.He is fifteen year old.()15.Our school is not very big.There are only ________ students.A.nine hundreds ofB.nine hundredC.nine hundredsD.nine hundred of

      ()16.How many new words are there in ________ lesson?

      There are only _________.A.five;fifthB.fifth;fiveC.the fifth;the fiveD.the fifth;five

      ()17.________, Coca-Cola began to enter China's market.A.In 1970'sB.In 1970sC.In the 1970s'D.In the 1970s

      ()18.There was no bus in that small town.We had a ________.A.ten miles walkB.ten-mile walkC.ten mile's walkD.tenth mile walk

      ()19.Today is the first day and ________.A.Tuesday is fourthB.Thursday is the fourthC.second is Tuesday D.a second is Thursday

      ()20.Which room do you live in? ________.A.The 201 RoomB.Room 201C.Room 201stD.The 201's Room

      ()21.How many magazines do you have? I have ________.A.twoB.bothC.twiceD.the second

      ()22.Three hundred thousand one hundred and seventy means ________.A.3,170B.3,117C.300,170D.30,170

      ()23.On May ________, ________ people traveled round the country.A.the first, millionsB.the first, millions ofC.first, the millionthD.first, millions

      ()24.________ of them are dining at school.A.TwelveB.TwelfthC.The twelveD.the 12th

      ()25.It's 7:17 is read ________.A.seven and seventeenB.seven sevenC.seven one sevenD.seven seventeen

      ()26.Four ________ two is two.A.plusB.minusC.timesD.divided by

      ()27.Three ________ five is eight.A.plusB.minusC.timesD.divided by

      ()28.Three ________ seven is twenty-one.A.plusB.minusC.timesD.divided by

      ()29.Forty-two ________ seven is six.A.plusB.minusC.timesD.divided by

      ()30.There are ________ days in a year.A.three hundred sixty and fiveB.three hundred and sixty-five

      C.three hundreds and sixty-fiveD.three hundred sixty-five

      ()31.There are ________ students in that school.A.two thousand eight-sixB.two thousand eighty-six

      C.two thousand and eighty-sixD.two thousands and eighty-six

      ()32.It took me ________ to get there.A.two hours and a halfB.two hours and half

      C.two hour and a halfD.two hour and half

      ()33.September is _________ month of the year.A.the ninethB.the ninthC.ninethD.ninth

      ()34.Please pass me _______ book on the left.A.thirdB.threeC.the thirdD.the three

      ()35.________ is a very tall boy.A.The twelveB.The twelvethC.The twelfethD.The twelfth

      ()36.We have known each other for ________.A.a year and halfB.a year with halfC.a year and a halfD.a year with a half

      ()37.“What year is it?”

      “It's ________.”

      A.nineteen hundred and ninety-sevenB.nineteen and ninety-seven

      C.nineteen ninety and sevenD.nineteen ninety-seven

      ()38.“What's the date today?”

      “It's _________.”

      A.TuesdayB.June FourthC.June the fourD.June the fourth

      ()39.The train from Shanghai will arrive ________.A.in quarter past sixB.in a quarter past sixC.at quarter past sixD.at a quarter past six

      ()40.My friend was born on _________.A.three of July, 1979B.the third of July,1979

      C.1979, July the thirdD.1979, the third of July

      ()41.________ is less than ________.A.One-third;two-thirdsB.One-third;two-third

      C.First-three;first-threesD.One-third;one-three

      ()42.Which lesson did you learn yesterday? ________.A.Lesson SevenB.Lesson seventhC.The 7 LessonD.7 Lesson

      ()43.“What's the date today?” “It's _______.”

      A.the fourth of mayB.the fourth MayC.May fourD.May the fourth

      ()44.334 is read ________.A.three hundreds and thirty fourB.three hundreds thirty four

      C.three hundred and thirty fourthD.three hundred and thirty-four

      ()45.In February, there are only _________ days.A.twenty nineB.twenty-ninethC.twenty-nineD.twenty eight

      ()46.There will be a comedy on TV at ________ this evening.A.seven past thirtyB.half past sevenC.seven the thirtyD.thirty to seven

      ()47.It took me ________ to find out the key to the drawer.A.one and half hoursB.one and a half hoursC.one and a half hourD.one and half hour

      ()48.I'm so tired after ________ walk.A.three hoursB.three hours'C.three hour'sD.three hour

      ()49.There are ________ stars in the sky.A.million ofB.millions ofC.the millionD.a million of

      ()50.the street is ________ wide.A.two metersB.two meterC.the two meterD.a two meter

      Key:

      1.A2.C3.B4.D5.A6.C7.B8.A9.A10.B11.C12.D13.D14.D15.B16.D17.D18.B19.B20.B21.A22.C23.B24.A25.D26.B27.A28.C29.D30.B31.C32.A33.B34.C35.D36.C37.D38.D39.D40.B41.A42.A43.D44.D45.C46.B47.B48.B49.B50.A

      第三篇:數(shù)詞教案

      一、概述

      數(shù) 詞

      表示數(shù)目與順序的詞,叫做數(shù)詞(numeral)。數(shù)詞有兩種:基數(shù)詞和序數(shù)詞。數(shù)詞與不定代詞相似,其用法相當(dāng)于形容詞或名詞??梢栽诰渲谐洚?dāng)句子成分,如可用作主語、定語、賓語、介詞賓語、表語、同位語或狀語等。

      One added to six is seven.六加一等于七。(基數(shù)詞作主語)

      二、基數(shù)詞

      表示數(shù)目的詞是基數(shù)詞(cardinal numeral),如one(一),two

      (二),thirty(三十)等。

      1、最基本的基數(shù)詞

      2、其它基數(shù)詞

      (1)21-99先“幾十”再”幾”,中間加連字符。21 twenty-one 25 twenty-five 99 ninety-nine(2)100及100以上的基數(shù)詞

      100及100以上的基數(shù)詞,以末位向前推(每三位一節(jié)),依次須用到hundred, thousand, million, billion等。(3)基數(shù)詞的讀法

      ①三位數(shù)的讀法:第一個(gè)數(shù)字+hundred+ and+后面的一位或兩位數(shù)字 101→ one hundred and one 450→ four hundred(and)fifty ②1,000以上的數(shù)的讀法:先從后向前數(shù),每三位數(shù)加一個(gè)逗號(hào),第一個(gè)逗號(hào)前的數(shù)字用thousand(千),第二個(gè)逗號(hào)前的數(shù)字用million(百萬),用 “幾十thousand”表示 “幾萬”,以 “幾百thousand”表示 “幾十萬”,用 “幾十million”表示 “幾千萬”,用”幾百million”表示 “幾億”。百位與十位(或個(gè)位)之間用and(偶爾可不用)5,643→ five thousand six hundred and forty-three 865,432 → eight hundred sixty-five thousand four hundred and thirty-two 6,000,000→ six million 60,000,005→ sixty million and five

      3、基數(shù)詞的用法(1)基數(shù)詞的功能

      基數(shù)詞在句子中可以做主語、賓語、定語、表語、同位語等,其句法功能基本上相當(dāng)于名詞或形容詞。

      One and two is three.一加二等于三。(做主語,表語)

      Fifty divided by five is ten.五十除以五等于十。(做主語,表語)

      I wanted three, but he gave me two.我想要三個(gè),他卻給我兩個(gè)。(作賓語)It brings us in two million dollars a year.這給我們帶來每年兩百萬美元的收入。(作定語)

      Is there room for us three? 有我們?nèi)说奈恢脝??(作同位語)

      The town has a population of one hundred thousand.這個(gè)城鎮(zhèn)擁有十萬人口。(介詞賓語)

      (2)事物編號(hào)一般用基數(shù)詞

      第209房間 Room 209 第三部分 section 3/part 3 南京路308號(hào) 308 Nanjing Road 電話號(hào)碼398688 TEL 3698688(3)某些數(shù)學(xué)算式表示法

      3+2=5 Three/and/plus/added two is/equals five 10-5=5 Ten minus/less five is five。Five from ten leaves five.(4)hundred,thousand,million的用法

      ①當(dāng)前面有數(shù)詞以及many,several等詞修飾時(shí),這三個(gè)詞用單數(shù)形式,后面直接跟復(fù)數(shù)名詞。

      Two hundred old people died of cold last winter.去年冬天200名老人被凍死。②當(dāng)這幾個(gè)詞前面沒有數(shù)詞而后面有of時(shí),則一定要用復(fù)數(shù)形式,表示數(shù)百、數(shù)千等籠統(tǒng)的數(shù)目概念。

      hundreds of dollars 數(shù)百美元

      (5)score(二十),dozen(打;十二個(gè))的用法 ①dozen 當(dāng)dozen與基數(shù)詞或many, several等連用時(shí),不加“-s”,所修飾的名詞前常省去of。但是,在a dozen of these people, two dozen of them等短語中應(yīng)加of。這是因?yàn)榱?xí)慣上在these, those, us等詞前,應(yīng)該用dozen of的緣故。

      two dozen books 兩打書 two(many, several)dozen pencils 兩打(幾打)鉛筆 ②score score意為“二十”。two score of people中應(yīng)加of,但three score and ten people,“70人”中不加of。scores of people意為“許多人”。

      上述這兩個(gè)詞的復(fù)數(shù)形式與of連用時(shí),表示不確切的數(shù)量,意為“許多……,大量的…… ”。for dozens of years 好幾十年以來 scores of years ago 許多年前

      三、序數(shù)詞

      表示順序的詞是序數(shù)詞(ordinal numeral),如first(第一),second(第二),thirtieth(第三十)等。序數(shù)詞前一般要加定冠詞。

      1、最基本的序數(shù)詞(1)序數(shù)詞1-19 除第一(first),第二(second),第三(third)有特殊形式外,其余均由-th結(jié)尾即基數(shù)詞+th構(gòu)成,其中有幾個(gè)序數(shù)詞加-th時(shí)拼法不規(guī)則,分別是fifth, eighth, ninth, twelfth,需多加注意。

      (2)十位整數(shù)的序數(shù)詞

      十位整數(shù)的序數(shù)詞的構(gòu)成方法是將相應(yīng)的基數(shù)的詞尾-ty中的y變?yōu)閕,然后再加-eth,如forty-fortieth.(3)第“幾十幾”

      基數(shù)詞“幾十幾”變成序數(shù)詞時(shí),僅將個(gè)位變成序數(shù)詞。twenty-two → twenty-second(4)序數(shù)詞的縮寫形式

      序數(shù)詞的縮寫形式由阿拉伯?dāng)?shù)字加上序數(shù)詞的最后兩個(gè)字母構(gòu)成。

      first→1st second→2nd third→3rd forth→4th twenty-first→21st ninety-fifth→95th

      2、序數(shù)詞的用法(1)序數(shù)詞的功能

      序數(shù)詞在句子中可用做主語、賓語、定語、表語等,主要用作定語,其前面常用定冠詞the。(2)序數(shù)詞前不用定冠詞的情況

      ①表示順序的語氣很弱,具有“又一”、“再一”的意思時(shí),其前要用不定冠詞,不用定冠詞。

      I'll have to do it a second time.我只得再做一次。

      ②序數(shù)詞前有指示代詞、物主代詞、名詞所有格或every時(shí),不用定冠詞。

      Berlin in 1929 held a public celebration on Einstein’s fiftieth birthday.柏林在一九二九年愛因斯坦第五十歲生日時(shí)舉辦了一個(gè)公開慶祝會(huì)。③在表示分?jǐn)?shù)的序數(shù)詞前不用定冠詞。

      From then on he toured three-fourths of Beijing.從那以后他逛了四分之三的北京城。④數(shù)詞與名詞構(gòu)成復(fù)合名詞時(shí),不用定冠詞。

      There is a first-class hotel over there.那邊有一個(gè)一流的賓館。

      ⑤序數(shù)詞用作副詞時(shí),不用定冠詞。

      Why did the captain first hesitate in letting the boy risk climbing the tree?為什么上尉一開始猶豫讓那個(gè)男孩冒險(xiǎn)爬樹?

      ⑥在一些由序數(shù)詞構(gòu)成的固定詞組里不用定冠詞。at first 開始 first of al1首先 from first to last自始至終

      3、數(shù)詞的復(fù)數(shù)形式

      基數(shù)詞和序數(shù)詞一般都以單數(shù)形式出現(xiàn),但在下面幾種情況下卻要用復(fù)數(shù):(1)表示幾十歲時(shí)

      “二十多歲”說twenties,表示的是20歲到29歲。依次類推,thirties表示“三十幾歲”,forties表示“四十幾歲”,但“十幾歲”不可說tens,而要說teens,指13歲至19歲。The hero of the story is an artist in his thirties.故事的主人翁是一位三十多歲的藝術(shù)家。(2)表示幾十年代時(shí)

      “二十世紀(jì)八十年代”寫成1980s或1980’s,均讀作nineteen eighties,指的是1980至1989年這十年間,需注意的是,年代用代字表示時(shí)則不可用-'s形式。History has entered the eighties.歷史進(jìn)入到八十年代。(3)表示不確定數(shù)目時(shí)

      這時(shí)要在million,thousand,hundred等詞后加上-s并與of連用,表示大約多至“數(shù)以……計(jì)”,但millions of等前不能再加基數(shù)詞,卻可加some,several等表示不確定數(shù)目的修飾語。

      Millions of other stars are even bigger and brighter than the sun.數(shù)以百萬計(jì)的星球甚至比太陽還大還亮。(4)在分?jǐn)?shù)中

      當(dāng)基數(shù)詞(表示分子)大于one時(shí),序數(shù)詞(表示分母)要用復(fù)數(shù),兩者之間用不用連字符號(hào)均可。

      Two thirds of the teachers in our school are women.我們學(xué)校三分之二的老師是女的。(5)當(dāng)基數(shù)詞用作可數(shù)名詞或用于某些固定詞組中時(shí),也要用復(fù)數(shù)。How many sevens are there in forty-nine?49是由幾個(gè)七組成? Wait a minute.I’ll be finished in two twos.請等一下,我馬上就來。

      四、分?jǐn)?shù)詞、小數(shù)、和百分?jǐn)?shù)

      1、分?jǐn)?shù)

      (1)分?jǐn)?shù)的構(gòu)成法

      分子用基數(shù)詞,分母用序數(shù)詞;分子大于”1”時(shí),分母加”s”(即序數(shù)詞應(yīng)變?yōu)閺?fù)數(shù))。1/3 one-third 1/4 one-fourth 2/5 two-fifths 另外還有下列構(gòu)成法:

      1/2 a(one)half 1/4 a quarter 3/4 three quarters one and a half 巧記分?jǐn)?shù):分子基數(shù)詞,分母序數(shù)詞,分子大于“1”,分母加“-s”。帶分?jǐn)?shù)莫著急,前加整數(shù)就可以。分母若是“2”和“4”,half、quarter可代替。(2)分?jǐn)?shù)的功能

      分?jǐn)?shù)在句子中可用做主語、賓語、表語、定語、狀語等。

      A quarter of the students are girls.四分之一的學(xué)生是女生。(做主語)

      The crop that year was only one half of the usual amount.那年的收成只是平常年景的一半。(作表語)

      (3)作主語是謂語動(dòng)詞的數(shù)

      表示幾分之幾(或百分之幾)的人或物時(shí),須在分?jǐn)?shù)(或百分?jǐn)?shù))和人或物間加of。若充當(dāng)主語,謂語動(dòng)詞的數(shù)須與of后的名詞的數(shù)保持一致。

      Sixty percent of her income was spent on clothes.她收入的60%花在了服裝上。但當(dāng)表示人口的幾分之幾(或百分之幾)作主語時(shí),謂語動(dòng)詞常用復(fù)數(shù)形式。

      2、小數(shù)

      (1)小數(shù)的表示和讀法 小數(shù)用基數(shù)詞表示,注意其讀法

      小數(shù)點(diǎn)讀作point,零讀作zero或naught。小數(shù)點(diǎn)后的數(shù)字按個(gè)位基數(shù)詞依次讀出。0.1(zero)point one 2.05 two point zero

      (2)小數(shù)的功能 小數(shù)在句子中一般作定語 The rope is 1.8 metres long.繩子長1.8米。

      3.百分?jǐn)?shù)

      (1)百分?jǐn)?shù)的表示

      百分?jǐn)?shù)由基數(shù)詞加percent表示。5% five percent 25% 25percent(2)百分?jǐn)?shù)的功能

      在句子中可做主語、賓格、表語、定、狀語等。作狀語時(shí),常與by連用。

      More than 70 percent of the surface of the earth is covered by water.百分之七十多的地球表面被水覆蓋著。

      五、基數(shù)詞、序數(shù)詞的其他應(yīng)用。

      1、年、月、日表達(dá)法(1)年代表達(dá)法

      年代用基數(shù)詞表示,時(shí)間前用介詞in。

      221BC two hundred and twenty-one BC/two twenty-one BC.注意:年代后不用year,但可放在數(shù)詞前

      in the year 1979一九七九年 the twenties,20s二十年代 in one's twenties某人二十多歲(2)月份表達(dá)法

      月份前用in,月份名稱第一個(gè)字母須大寫。in January(in Jan.)in May.in September(in Sept.)in December(in Dec.)(3)日期表達(dá)法

      用序數(shù)詞表示,前面加the,在某日前用介詞on。on the first 在一日 on the thirtieth在三十日(4)某年某月某日表達(dá)法

      in October,1949 一九四九年七月 on October 1,1949一九四九年七月一日 May 1(st)(May the first)五月一日 Mar.5(th)(March the fifth)三月五日

      2、時(shí)刻表達(dá)法 時(shí)刻用基數(shù)詞表示。

      時(shí)間巧說:數(shù)字說法時(shí)后分,quarter,half不可用。如果出現(xiàn)past,to,分鐘在前記心中。past過,差幾分to,分鐘小于三十分。(1)表示“幾點(diǎn)鐘”

      用“整點(diǎn)數(shù)+o’clock(可省略)”。

      8:00 eight(o'clock)12:00 twelve(o'clock)(2)表示“幾點(diǎn)過幾分” 在半小時(shí)之內(nèi)

      表示“幾點(diǎn)過幾分”,而分鐘數(shù)又在半小時(shí)之內(nèi)(包括半小時(shí))可用”分鐘數(shù)+past/after(美)+鐘點(diǎn)數(shù)”。

      8:15 a quarter past/after eight 8:20 twenty past eight 8:30 half past eight(3)表示”差幾分幾點(diǎn)”,而且不超過半小時(shí)

      表示“差幾分幾點(diǎn)”,而且不超過半小時(shí),可用”分鐘數(shù)+to/of(美)+鐘點(diǎn)數(shù)”。10:45 a quarter to /of eleven 11:55 five to /of twelve 注意:表示在某時(shí)用介詞at,任何時(shí)刻均可直接按數(shù)字順序讀,8:05 eight five等。We begin classes at eight.我們八點(diǎn)開始上課。

      3、倍數(shù)表達(dá)法(1)倍數(shù)+ as...as 倍數(shù)+as...as(意為“A是B的幾倍”,多用于對客觀事物的比較。)Asia is four times as large as Europe.亞洲有歐洲的四倍大。

      This dictionary is twice as heavy as that one.這本字典有那本字典的兩倍重。(2)倍數(shù)+比較級(jí)形式+than 倍數(shù)+(形容詞/副詞)比較級(jí)形式+than,意為“增加(多)幾倍”。

      This type of car uses three times more petrol than that type does.這種汽車比那種汽車的耗油多三倍。

      The house is twice larger than that one.這間房子比那間大兩倍。(3)倍數(shù)+ the size of 倍數(shù)+ the size/length/depth of...意為”是…幾倍大/長/深”。

      The earth is 49 times the size of the moon.地球的大小是月球的四十九倍。Shanghai is ten times the size of our hometown.上海有我們家鄉(xiāng)的十倍大。(4)倍數(shù)+ that of 倍數(shù)+ that of...多用于生產(chǎn)、產(chǎn)量等方面的比較。

      Their grain output is now 3.5 times that of 1980.他們的糧食產(chǎn)量是1980年的3.5倍。

      4、基數(shù)詞與序數(shù)詞連用時(shí)

      基數(shù)詞與序數(shù)詞連用時(shí),一般將序數(shù)詞放在基數(shù)詞前面;當(dāng)用基數(shù)詞構(gòu)成復(fù)合形容詞時(shí),其后的名詞要用單數(shù)形式。

      The first three parts need to be revised.前三部分需要修訂。a six-year-old girl一個(gè)六歲女孩

      a five-hundred-word composition一篇五百字的作代

      六、加減乘除的表示法

      1、加法的表達(dá)法

      如表達(dá)“幾加幾是多少”,可用“What/How much is+基數(shù)詞+and/plus+基數(shù)詞?”;如表達(dá)“幾加幾等于幾”,可用“基數(shù)詞+and+基數(shù)詞+is+基數(shù)詞”。What/How much is seven and eight?7加8是多少? Seven and eight is fifteen.7加8等于15。

      2、減法的表達(dá)法

      如表達(dá)“幾減幾是多少”,可用“What/How much is+基數(shù)詞+minus+基數(shù)詞?”;如表達(dá)“幾減幾等于幾”,可用“基數(shù)詞+minus+基數(shù)詞+is+基數(shù)詞”。What/How much is seven minus eight?7減8是多少? Twenty-three minus eight is fifteen.23減8等于15。

      3、乘法的表達(dá)法

      如表達(dá)“幾乘幾是多少”,可用“What/How much is+基數(shù)詞+times+基數(shù)詞?”;如表達(dá)“幾乘幾等于幾”,可用“基數(shù)詞+times+基數(shù)詞+is+基數(shù)詞”。What/How much is seven times eight?7乘8是多少? 5 times 8 is 40.5×8=40

      4、除法的表達(dá)法

      如表達(dá)“幾除以幾是多少”,可用“What/How much is+基數(shù)詞+divided by+基數(shù)詞?”;如表達(dá)“幾除以幾等于幾”,可用“基數(shù)詞+divided by+基數(shù)詞+is+基數(shù)詞”。20 divided by 4 is 5.20÷4=5 What/How much is 64 divided by eight?64除以8是多少?

      七,數(shù)詞記憶技巧

      1.巧記100內(nèi)的基數(shù)詞:

      十二以內(nèi)詞各異,十三數(shù)到十九去,后加-teen莫忘記;

      二十、三十……至九十,整十之后有-ty;

      要說“幾十幾”,中間“-”號(hào)別丟棄,hundred是“一百”,請你記住莫大意。2.巧記讀數(shù):從右向左三逗開,一逗千,二逗百萬,三逗就是十萬萬;左右三位分開讀,保你又快又喜歡。注:逗指逗號(hào)。

      3.巧用hundred等:hundred,thousand和million,有時(shí)含糊有時(shí)清。清時(shí)無s和of,糊時(shí)s和of跟。

      4.巧記基數(shù)詞變序數(shù)詞:基變序,很容易,結(jié)尾加上“th”。一二三特殊記,結(jié)尾各是t、d、d。八減t,九去e,f來把ve替,y改為“ie”,結(jié)尾仍有“th”。若是遇到幾十幾,只變個(gè)位就可以。

      5.巧記分?jǐn)?shù):分子基數(shù)詞,分母序數(shù)詞,分子大于“1”,分母加“-s”。帶分?jǐn)?shù)莫著急,前加整數(shù)就可以。分母若是“2”和“4”,half、quarter可代替。

      6.時(shí)間巧說:數(shù)字說法時(shí)后分,quarter,half不可用。如果出現(xiàn)past,to,分鐘在前記心中。past過,差幾分to,分鐘小于三十分。

      第四篇:數(shù)詞教案

      授課內(nèi)容:數(shù)詞 知識(shí)點(diǎn):

      Step1.導(dǎo)入: 直接導(dǎo)入,說今天我們將學(xué)習(xí)詞匯部分的數(shù)詞,讓學(xué)生想生活中用到數(shù)字的地方,學(xué)生說完后老師補(bǔ)充。大致分為:數(shù)量,序數(shù),年齡,幾點(diǎn)幾分,月份,算術(shù)題,號(hào)碼(電話號(hào)碼,車號(hào),班級(jí)號(hào),房間號(hào))Step2.講數(shù)詞的分類

      一、數(shù)詞的分類:基數(shù)詞和序數(shù)詞

      表示數(shù)量多少的數(shù)詞叫基數(shù)詞。例:one, three, fourteen 表示順序先后的數(shù)詞叫序數(shù)詞。例:second, fifteenth, eightieth 1.基數(shù)詞:a.1-12

      one two three four five six seven eight nine ten eleven twelve

      b.13—19

      這7個(gè)基數(shù)詞都以后綴teen結(jié)尾,除了16以外,都有兩個(gè)重音。

      注意這幾個(gè)單詞的拼音:thirteen fifteen eighteen

      c.20—90

      這8個(gè)整十?dāng)?shù)都是由2-9的基數(shù)詞加后綴ty構(gòu)成。

      注意拼寫:twenty, thirty, forty, fifty, eighty.它們的后綴前面的部分和相應(yīng)的基數(shù)詞比較稍有變化。

      d.21-29及其他兩位數(shù)

      21-29 由20加基數(shù)詞1-9組成,在十位數(shù)和個(gè)位數(shù)中間要加連字符“-”

      e.100以上的基數(shù)詞

      hundred

      整百數(shù)100-900由1-9加hundrend 構(gòu)成。100以上的基數(shù)詞的寫法:十位與百位之間用and 連接。hundred 末尾不能加“s”.f.超過百位數(shù)的讀法:

      英語中數(shù)詞每3位數(shù)一個(gè)單位,hundred, thousand 千, million 百萬,billion 十億。從個(gè)位向前,每三位加一個(gè)“,”;第一個(gè)“,”前thousand ,第二個(gè)“,”前是millon:讀數(shù)時(shí),我們從左向右三位三位地按照三位數(shù)的讀法讀,遇上逗號(hào)就分別加上該逗呈所表示的數(shù)詞。如:

      10,000 ten thousand

      4,002 four thousand and two

      7,059 seven thousand and fifty-nine

      95,680 ninety-five thousand, six hundred and eighty

      43,982,567 forty-thee million, nine hundred and eight-two thousand, five hundred and sixty-seven

      注:hundred, thousand, million 用在具體數(shù)字前,表示確切數(shù)字時(shí),要用單數(shù)形式,但是,當(dāng)hundred, thousand, million 后加表示不確切數(shù)字時(shí),則要用復(fù)數(shù)形式,其前面不能再加具體數(shù)目,如: 200萬 two million

      數(shù)百萬millions of

      成千上萬

      thousands of

      成百上千

      hundreds of 練習(xí):寫一些數(shù)字老師領(lǐng)讀,再讓學(xué)生讀,并加分鼓勵(lì)

      625

      8,961

      10,000

      20,405

      2.序數(shù)詞 a.第1-第19

      英語中第1-第19的序數(shù)詞中,除了first,second 和 third 形式特別以外,其他的都是由基數(shù)詞加后綴-th構(gòu)成。還要特別注意fifth, eighth, ninth, twelfth的拼寫。

      first

      second

      third fourth

      fifth

      sixth

      seventh

      eighth

      ninth

      tenth

      eleventh

      twelfth

      thirteenth

      fourteenth

      fifteenth

      sixteenth

      seventeenth

      eighteenth

      nineteenth

      b.第20-第90

      整十?dāng)?shù)的序數(shù)詞的構(gòu)成方法是:先把整十?dāng)?shù)的基數(shù)詞詞尾y變i, 然后加后綴-eth.Twentieth

      thirtieth

      fortieth

      fiftieth

      sixtieth

      seventieth

      Eightieth ninetieth

      c.第21及以上帶個(gè)位數(shù)的序數(shù)詞,它的十位數(shù)仍然用基數(shù)詞,個(gè)位數(shù)用序數(shù)詞,中間用連字符“-”連接

      twenty-first

      thirty-third

      d.讀日期要用序數(shù)詞。

      f.序數(shù)詞前要加the 練習(xí):老師說數(shù)字,學(xué)習(xí)生英語,進(jìn)行練習(xí)鞏固。然后讓學(xué)生自己總結(jié)基數(shù)詞和序數(shù)詞的不同,然后老師總結(jié)補(bǔ)充。最后進(jìn)行習(xí)題練習(xí)。

      3.序數(shù)詞和基數(shù)詞的區(qū)別:1),意思不同。2),在使用序數(shù)詞的時(shí)候,前面一般要帶定冠詞the.例:

      Give me three bags, please.請給我3個(gè)袋子。

      Give me the third bag, please.請給第3個(gè)袋子。

      練習(xí)題:

      1.There are _____ days in a week.2.“M” is the ______ letter in the word “autumn”.3.September is _______ month of the year.4.There are ____(twelve)book on the bookcase.The ____(eight)book is about animals.5.The big shop is on ____ street.A.five

      B.fifth

      C./

      D.the fifth

      7.There are ____ days in a year.A.three hundred and sixtyfive

      B.three hundred and sixty-five

      C.three hundred and sixty-five

      D.three hundred and sixty-six Step 3 講數(shù)詞的運(yùn)用,首先講幾點(diǎn)幾分的表示法,先問學(xué)生:What’s the time now? 讓學(xué)生說有幾種表示時(shí)間的方法,老師再進(jìn)行講解。

      二. 數(shù)詞的應(yīng)用:

      1.時(shí)間表達(dá)法:用基數(shù)詞

      a.讀時(shí)刻,可以直接照表上的數(shù)字讀,整點(diǎn)時(shí)間后一般加o’clock, 如果幾點(diǎn)零幾分,這個(gè)零讀作“o”,如:

      7:15 seven fifteen

      8:30 eight thirty

      1:04 one o four

      12:00 twelve(o’clock)

      b.表示“幾點(diǎn)過幾分” 用介詞past.(分鐘數(shù)必須在半小時(shí)以內(nèi),包括半小時(shí))

      8:12 twelve past eight

      9:15 fifteen past nine/ a quarter past nine

      2: 30 thirty past two / half past two

      c.表示“幾點(diǎn)差幾分”,用介詞to,(分鐘數(shù)必須在半小時(shí)以上,不包括半小時(shí))

      5:58 two to six

      8:35 twenty-five to nine 1:45 a quarter to two 在這里老師說一道題 two to two 是幾點(diǎn)了?

      d.注意:在幾點(diǎn),要用介詞at.問幾點(diǎn)了要用:What’s the time?/ What time is it? 練習(xí):老師拿一個(gè)時(shí)鐘,播動(dòng)表針,讓學(xué)習(xí)進(jìn)行練習(xí)。再在黑板上寫一些時(shí)間來進(jìn)行寫在本上,老師檢查。

      練習(xí)題:用兩種方法表達(dá)

      6:12

      4:48

      11:08

      3:15

      6:30

      10:53

      8:10 9:50

      8:08

      11:15

      12:30

      1:05

      2:45 Step 4.號(hào)碼的表示法的講解:先寫下來,讓學(xué)生自己總結(jié)規(guī)律。然后進(jìn)行習(xí)題練習(xí)。2.號(hào)碼表達(dá)法

      編號(hào)可以用基數(shù)詞或序數(shù)詞分別加上名詞來表示,但序數(shù)詞放在名詞前面,并且要加the,基數(shù)詞則放在名詞后面。另外,在不同情況下,對開頭號(hào)字母大小的問題有不同的處理。第7 頁

      the seventh page = Page Seven 第4部分

      the fourdth part = Part Four 第1課

      the First Lesson = Lesson One 第9單元

      the Ninth Unit = Unit Nine 304路公共汽車

      Bus 304 / Bus No.304 508號(hào)房間

      Room 508/ Roon No.508 第6中學(xué) the No.6 Middle School 五

      (四)班

      Class 4, Grade 5 第4組 Team 4 第8行 Row 8

      第6號(hào) No.6

      電話號(hào)碼:110 練習(xí)題:

      Danny lives is _____.A.room 404 B.Room 404

      C.404 room

      D.404 Room Jim is in _____.A.class one, grade six

      B.grade one, class six

      C.Class one, Grade Six

      D.Grade one, Class Six Step 5.總結(jié)本節(jié)課所講知識(shí)點(diǎn)。

      第二個(gè)課時(shí)

      Step 1.銜接訓(xùn)練,做題

      1.The Yellow River is ______ longest river in China.A.second

      B.the second

      C.two

      D.the two 2.6點(diǎn)12

      17本語文書

      第24頁

      第十課 Step 2.講解年月日表達(dá)法,T問,When is your birthday? When did you born? 讓學(xué)生自己說然后再進(jìn)行講解 3.年月日表達(dá)法

      a.年代的表示法(年代前有in)

      411: four hundred and eleven

      1997: nineteen ninety-seven

      2000: two thousand

      2009: two thousand and six

      b.月份的表示法:

      月份開頭的第一個(gè)字母必須大寫,表示在某月用“in”

      January

      February

      March

      April

      May

      June

      July

      August

      September

      October

      November

      December

      c.日期表示法(在某日用on)

      1).某月某日表示法

      1月9日: the ninth of January/ January 9th(January the ninth)

      9月12日: the twelfth of September/ September 12th(September the twelfth)

      10月1日: the first of October/ October 1st(October the first)

      2).某年某月某日的表示法

      2007年11月5日

      Novembr 5th , 2007

      (on the fifth of November, two thousand and seven/ On November of fifth, two thousand and seven)

      1995年6月7日

      June 7th, 1995

      (on the seventh of June, nineteen ninety-five

      On June the seventh, nineteen ninety-five)練習(xí):第二節(jié)課學(xué)習(xí)已經(jīng)有些累了,這部分練習(xí)讓學(xué)習(xí)分組派代表來寫到黑板上。以活躍氛。

      練習(xí)1.用英語寫日期

      2.讓學(xué)習(xí)說自己的出生年月日

      練習(xí)題:

      1.用英語寫日期: 1月31日

      9月15日

      8月13日

      12月26日

      2月22 日

      3月7日

      7月14日

      4月13日

      5月5日

      10月8日

      11月30日

      2.Today is _____.A.the first of May

      B.the first May

      C.May first

      D.May one 3.The third month of the year is ______.Step 3.講簡單的算述題表達(dá)法。4.算述題表達(dá) 5+8=? 13 What’s five and eight?(It’s)thirteen.How much is five and eigth? It’s thirteen.How much/what is five plus eight? It’s thirteen.5+8=13

      Five and eight is(are)thirteen.Five plus eight is thirteen.Five and eight make(s)thirteen.15-9=6 What’s fifteen minus nine? Fifteen minus nine is six.練習(xí):1.讓學(xué)習(xí)用英語來表達(dá)算術(shù)題

      2.老師說算術(shù),讓學(xué)生來算題。練習(xí)題:

      9+2=11

      36-6=30

      58+50=108

      92-48=44 Step 4.綜合練習(xí)

      1.總結(jié):今天所學(xué)內(nèi)容。

      2.做題:方案一:練習(xí)題寫在黑板上,分小組做題,再由小組公布答案并進(jìn)行講解。3.方案二:學(xué)生自己做題,老師對答案。Step 5 Homework: 1.背重點(diǎn)單詞 2.做練習(xí)題

      第五篇:2013年初中英語詞性系列 數(shù)詞

      英語詞性系列之?dāng)?shù)詞

      1.數(shù)字的表示

      三位數(shù)數(shù)詞要在百位和十位(若無十位則和個(gè)位)之間加and。

      1,000以上的數(shù)字,從后向前第三位數(shù)加一個(gè)“,”,第一個(gè)“,”前為thousand,第二個(gè)“,”前為million,第三個(gè)“,”前為billion。

      2.序數(shù)詞除了first,second,third外,其余都在基數(shù)詞尾加-th構(gòu)成。

      3.分?jǐn)?shù)分子在前,分母在后,分子用基數(shù)詞,分母用序數(shù)詞,當(dāng)分子大于1小時(shí),分母序數(shù)詞要變成復(fù)數(shù)。

      4.Hundreds(thousands,millions)of??用法。

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