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1、關(guān)于基數(shù)詞序數(shù)詞的表達(dá)和用法第1頁,共53頁,2022年,5月20日,6點7分,星期四表示數(shù)目多少或順序多少的詞叫數(shù)詞,數(shù)詞分為基數(shù)詞和序數(shù)詞。表示數(shù)目多少的數(shù)詞叫基數(shù)詞;表示順序的數(shù)詞叫序數(shù)詞。什么叫數(shù)詞?2第2頁,共53頁,2022年,5月20日,6點7分,星期四1 基數(shù)詞( cardinal number)第3頁,共53頁,2022年,5月20日,6點7分,星期四1 onetwo three4 four 5 five 6 six 7 seven 8 eight 9 nine 10 ten111213141516171819 eleven twelve thirteen fourteen

2、fifteen sixteen seventeen eighteen nineteen2030405060708090100 twenty thirty forty fifty sixty seventy eighty ninetyone hundred 第4頁,共53頁,2022年,5月20日,6點7分,星期四基數(shù)詞的構(gòu)成1)112, 獨立成詞。 one two three four five six seven eight nine ten eleven twelve2)13-19, 由39 + teen構(gòu)成。 14fourteen 16-sixteen 17-seventeen 19ni

3、neteen 特殊拼寫: 13 thirteen 15-fifteen 18eighteen 3)2090, 以-ty結(jié)尾。 20twenty 30-thirty 40forty 50fifty 60-sixty 70-seventy 80-eighty 90ninety 4)2199, 兩位數(shù),十位與個位之間有 “-”。 21 twenty-one 55 fifty-five 99 ninety-nine5)101999,三位數(shù),百位與十位/個位之間加and。 101 one hundred and one 840 eight hundred and forty 693 six hundre

4、d and ninety-three 5第5頁,共53頁,2022年,5月20日,6點7分,星期四297hundredand基數(shù)詞三位數(shù) 的構(gòu)成6 twenty-nine729 hundred and seven 第6頁,共53頁,2022年,5月20日,6點7分,星期四035hundredand再來一個7 three503 hundred and five 第7頁,共53頁,2022年,5月20日,6點7分,星期四基數(shù)詞三位數(shù) 的構(gòu)成8 hundred and 百位數(shù) 十/個位數(shù)four hundred and thirty-twoone hundred and seventyeight h

5、undred and sixty-fiveone hundred and nine109432170865第8頁,共53頁,2022年,5月20日,6點7分,星期四作業(yè)339126203451704178926854703151309326703651307428第9頁,共53頁,2022年,5月20日,6點7分,星期四注: 1、1000以上幾個的詞,每三位數(shù)加一個逗號,第一個逗號前的數(shù)為thousand,第二個逗號前的數(shù)為million(百萬), 第三個逗號前的數(shù)為billion(十億),第四個逗號前的數(shù)為trillion(萬億) 888, 888,888,888,888eight hund

6、red and eighty-eight trillion, eight hundred and eighty-eight billion, eight hundred and eighty-eight million, eight hundred and eighty-eight thousand, eight hundred and eighty-eight第10頁,共53頁,2022年,5月20日,6點7分,星期四trillion trljn 萬億billion bljn 十億million mljn 百萬thousand aznd 千hundredhndrd 百第11頁,共53頁,20

7、22年,5月20日,6點7分,星期四29,43150076,thousand,hundredmillion,billion,and6) 1,000以上數(shù)目,從右向左每三位用“,” 分開,分別讀為thousand , million, billion 千 百萬 十億基數(shù)詞的構(gòu)成12第12頁,共53頁,2022年,5月20日,6點7分,星期四基數(shù)詞的構(gòu)成6 500 431 729six billion,five hundred million,four hundred and thirty-one thousand, seven hundred and twenty-nine第13頁,共53頁,2

8、022年,5月20日,6點7分,星期四four thousand, three hundred and twenty-oneseven million,six hundred and fifty four thousand, three hundred and twenty-one7,654,3211,987,654,32143214,321one billion, nine hundred and eighty-seven million,six hundred and fifty-four thousand, three hundred and twenty-one第14頁,共53頁,20

9、22年,5月20日,6點7分,星期四1. hundred thousand (表示具體數(shù)字) million billion2. hundreds thousands (表示概數(shù)) millions billions三.基數(shù)詞的用法數(shù)詞(several)+ ofthe/some / many/these/those hundreds of第15頁,共53頁,2022年,5月20日,6點7分,星期四基數(shù)詞的用法1、表示具體數(shù)目,hundred, thousand, million不用復(fù)數(shù) 表示不確定數(shù)目,用復(fù)數(shù)。即hundreds of(數(shù)百), thousands of(數(shù)千), millio

10、ns of(數(shù)百萬)+ 名詞復(fù)數(shù)。 1) Our country has a population of 1,300 million people. 2) There are several thousand students in our school. 3) After the war, thousands of people became homeless. 第16頁,共53頁,2022年,5月20日,6點7分,星期四作業(yè)704653421017834679012543213074283216547670465342181703467931204321309428320654第17頁,共

11、53頁,2022年,5月20日,6點7分,星期四warming up1. _ tress were planted on the mountain last year. A. Thousands of B. Thousand of C. Five thousand of D. Five thousands.2_ of the students are girls in our class ATwo threeBTwo threes CTwo thirdsDSecond three3.-When was he born? -He was born on _. A. second of Octob

12、er B. the October three C. October the second D. three of October18第18頁,共53頁,2022年,5月20日,6點7分,星期四1. If a = 3, b=4, whats the answer to the problem, a+2ab+1=? the answer is_. A. twenty eight B. twenty-eighth C. twenty-eight2. In our school about five _ students are able to surf the Internet . A. hund

13、erd of B. hunderds of C. hundred第19頁,共53頁,2022年,5月20日,6點7分,星期四3. _ sheep were killed in the accident. A. Thousand of B. Thousand C. Thousands of4. There are over nine _ workers in the factory, but _ of young people hope to work in it. A. hundred 0f; hundreds B. hundred; hundreds C. hundreds; hundred

14、第20頁,共53頁,2022年,5月20日,6點7分,星期四5. people in the world are sending information by e-mail every day.A.Several million B.Many millionsC.Several millions D.Many million A第21頁,共53頁,2022年,5月20日,6點7分,星期四1 基數(shù)詞( cardinal number)第22頁,共53頁,2022年,5月20日,6點7分,星期四序數(shù)詞的構(gòu)成1) 13, first, second, third 。2) 419, 相應(yīng)基數(shù)詞+th,

15、fourth,fifth,sixth,seventh,eighth,ninth,tenth,eleventh,twelfth,thirteenth,fourteenth,fifteenth,sixteenth,seventeenth,eighteenth,nineteenth.3) 2090, y變成ie +th, twentieth,thirtieth,fortieth,fiftieth,sixtieth,seventieth,eightieth,ninetieth。4) 2199, 只把個位的基數(shù)詞變成序數(shù)詞 如twenty-first,ninety-ninth5) 序數(shù)詞縮寫-數(shù)字最后兩

16、字母 如1st, 2nd, 3rd ,4th第23頁,共53頁,2022年,5月20日,6點7分,星期四基變序,有規(guī)律,詞尾加上“th”,一、二、三,特殊記,結(jié)尾字母t,d,d八去“t”,九去“e”,“f”要用ve替見“y”變成“i”和“e”,詞尾加上“th”,若是遇到幾十幾,只變個位就可以。序數(shù)詞縮寫記清楚,數(shù)字后跟兩字母。(序數(shù)詞構(gòu)成規(guī)律)24第24頁,共53頁,2022年,5月20日,6點7分,星期四基數(shù)詞序數(shù)詞基數(shù)詞序數(shù)詞onetwelvetwotwentythreetwenty-onefourfortyfiveone hundredsixone hundred and fiveeig

17、htone hundred and twenty-nineninenineteen一.基數(shù)詞、序數(shù)詞firstsecondthirdfourthfifthsixtheighthninthtwelfthtwentiethtwenty-firstfortiethone hundredthone hundred and fifthone hundred and twenty-ninthnineteenth第25頁,共53頁,2022年,5月20日,6點7分,星期四練習(xí)704653117121254280166704653428170346791445321694128654第26頁,共53頁,202

18、2年,5月20日,6點7分,星期四作業(yè)704653421017834679012543213074283216547670465342181703467931204321309428320654第27頁,共53頁,2022年,5月20日,6點7分,星期四時間類型表示法例讀法整點基數(shù)詞(+ oclock) 1:0030分鐘分鐘 + past +小時 2:10= 30 分鐘half + past + 小時3:3030分鐘(60-分鐘) + to +(小時 + 1)4:40分鐘逢15即 一刻鐘a quarter5:156:45簡化法按順序讀基數(shù)詞7:50one oclockten past twoh

19、alf past threetwenty to fivea quarter past fivea quarter to sevenseven fifty表示在幾點鐘用介詞 at數(shù)詞的表示法 時間第28頁,共53頁,2022年,5月20日,6點7分,星期四1. Its already 7:40 now. When will the film start? _. We still have five minutes. A. A quarter to seven B. A quarter to eight C. Seven past forty-five第29頁,共53頁,2022年,5月20日,6

20、點7分,星期四 月日年 在1998年10月1日數(shù)詞的表示法 年月日on Octorber the first, nineteen ninety-eight日the + 序數(shù)詞月首字母大寫月日與年之間用 ,分開年(兩位兩位讀)on August the ninthin May, two thousand and ten天 日用 on 年 月用inon Oct. 1st , 1998 月日 在8月9日 月年 在2010年5月第30頁,共53頁,2022年,5月20日,6點7分,星期四 1. The accident happened on_. A. April 5, 2001 B. 2001, A

21、pril 5 C. April 2001, 5 2. I was born _. A. in March 8, 1993 B. on July 9, 1994 C. on May, 1995第31頁,共53頁,2022年,5月20日,6點7分,星期四20世紀(jì)90年代in the 1990s/1990s在他50多歲時in his fifties數(shù)詞的表示法 1.年代世紀(jì)in thein ones + 整十基數(shù)詞復(fù)數(shù)在某人幾十歲時nineteennineties第32頁,共53頁,2022年,5月20日,6點7分,星期四2、“基數(shù)詞+名詞” 的合成形容詞作定語, 中間有連字符“”,當(dāng)中的名詞用單數(shù)

22、。 a 3 year old girl a seven-day holiday 3、表計量- “基數(shù)詞+度量單位+形容詞” The classroom is 7 meters long, 6 meters wide and 3 meters high.33第33頁,共53頁,2022年,5月20日,6點7分,星期四1. There will be more chances in _ century than in _ century. A. twenty-one, twenty B. twenty-first, twentieth C. the twenty-first, the twenti

23、eth2. The city changed a lot _. A. in 1980s B. in the 1980s C. in the 1980第34頁,共53頁,2022年,5月20日,6點7分,星期四3. He graduated in _ of _ century. A. the sixtieth; twenty B. sixty; the twentieth C. his sixties; the twentieth4. She got the prize _. A. in her fifties B. in fifties C. in her fifty第35頁,共53頁,202

24、2年,5月20日,6點7分,星期四5. The winner is _. He is an _ boy . A. eight-year-old; eight years old B. eight years old; eight-year-old C. eight-years old; eight-year-old6.He came to China _. A. at the age of 20 B. when he is 20 C. at age of 20第36頁,共53頁,2022年,5月20日,6點7分,星期四7.The river is about _. A. 6,000 meter

25、s long B. 6,000-meters-long C. 6,000-meter-longbe + 數(shù)詞 +度量詞 + 形容詞第37頁,共53頁,2022年,5月20日,6點7分,星期四15分子 基數(shù)詞分母 序數(shù)詞one fifth27分子 1分母 + stwo sevenths14分子 a分母 quartera quarter34three quarters12a half13three and one third3基數(shù)詞 + and + 分?jǐn)?shù)數(shù)詞的表示法 分?jǐn)?shù)百分?jǐn)?shù)第38頁,共53頁,2022年,5月20日,6點7分,星期四80 %基數(shù)詞 + percenteighty percent

26、百分?jǐn)?shù) + of + 可數(shù)名詞復(fù)數(shù) 謂語動詞用復(fù)數(shù)百分?jǐn)?shù) + of + 不可數(shù)名詞謂語動詞用單數(shù)Seventy percent of students in our class are girlsOver seventy percent of the earths surface is covered with water第39頁,共53頁,2022年,5月20日,6點7分,星期四1. _ of the students _ boys in Class A. Two three; are B. Two thirds; are C. Two thirds; is2. _ of her money

27、 _ spent on clothes.A. Two three; are B. Two thirds; is C. Two third; is3. _ the teachers in our school is about one hundred, and _ of them are women teachers. A. The number of; two thirds B. The number of ; two third C. A number of; two thirds第40頁,共53頁,2022年,5月20日,6點7分,星期四一個半小時兩個半小時 two and a half

28、hours= two hours and a half one and a half hours= one hour and a half數(shù)詞的表示法 半的表示法1. The boy always stays there for _. A. three and half hour B. three hour and a half C. three and a half hours2. The old man drank_ beer. A. two bottles and a half B. two and a half bottle C. two bottle and a half第41頁,共

29、53頁,2022年,5月20日,6點7分,星期四一倍 once,兩倍 twice,三倍 three times (三倍或以上 基數(shù)詞times)數(shù)詞的表示法 倍數(shù) This box is five times as big as that one.=This box is four times bigger than that one. A + be + 倍數(shù) + as +adj.原+ as +B. A是B的 倍 A + be + 倍數(shù) + adj.比+ than +B. A比B 倍第42頁,共53頁,2022年,5月20日,6點7分,星期四 1. This building is _ tha

30、t building. A. three time as tall as B. twice taller than C. three times as taller as 2. 我的箱子比你的重六倍! My box is _ yours.2.What a table! Ive never seen such a thing before.It is it is long . A.half not as wide as B.wide not as half asC.not half as wide as D.as wide as not half six times heavier thanse

31、ven times as heavy asC第43頁,共53頁,2022年,5月20日,6點7分,星期四一般編碼用 名詞 + 基數(shù)詞207房 三年級一班第五部分第一課3 號汽車第一中學(xué)Room 207 Class One Grade ThreePart five = the fifth partLesson one = the first lesson Bus No.3 = the No.3 busNo. 1 Middle School數(shù)詞的表示法 編號1.My mother lives at on floor.A.Room Six;the second B.Six Room;secondC.

32、Room six;two D.the room six;the secondA第44頁,共53頁,2022年,5月20日,6點7分,星期四(1) 小數(shù)的讀法 小數(shù)點左邊的數(shù)通常按基數(shù)詞讀,若為三位以上的數(shù),也可按編碼式讀法讀出,即將數(shù)字單個讀出;小數(shù)點右邊的數(shù)通常按編碼式讀法單個讀出。如: 6.86 six point eight six 14.15 fourteen point one five (2) 小數(shù)中“0”的讀法 “0”在小數(shù)中通常讀作nought(英)或zero(美),也可讀作字母o。如: 0.08 (nought)point nought eight 或 (zero)point

33、 zero eight 小數(shù)表示法 第45頁,共53頁,2022年,5月20日,6點7分,星期四6+511 Six plus five is eleven 或 Six and five is eleven. 11-65 Eleven minus six is five. 或 Six from eleven is five. 4520 Four multiplied by five is twenty. 或 Four times five is twenty. 2045 Twenty divided by four is five. 或 Four into twenty goes five. 3

34、 Three squared is nine. 2 Two cubed is eight. 加減乘除式的表達(dá)方法 23第46頁,共53頁,2022年,5月20日,6點7分,星期四表示“大約、接近”,常用nearly, about, some, almost, around 等。 about 700 people some fifty years ago 表示“左右”用or so In the past five years or so “少于”用less than Less than 30 years old 不到30歲“多于”用 more than , over More than a ye

35、ar ago over 70 years ago約數(shù)表示法第47頁,共53頁,2022年,5月20日,6點7分,星期四(1)序數(shù)詞作定語,前面要加the; The first truck is carrying a food basket John lives on the fifteenth floor She is my first English teacher.(2)有時加a/an,“再一”,“又一” 的意思Well have to do it a second time Shall I ask him a third time? When I sat down,a fourth ma

36、n rose to speakThey had a second child in 1988序數(shù)詞的用法48第48頁,共53頁,2022年,5月20日,6點7分,星期四選擇填空。1March is _month of a yearA a three B the third C a third2We will have a meeting at 8:05_Afive to eight B.eight to five Ceight o five3Eight plus eight is_.Asixteen Bsixty-four Cone4He is an _boyAeight years Beight-year-old Ceight-years-old5We will have a_ walkAten minutes Bten minutes Cten-minutesB the thirdCeight o fiveAsixteenBeight-year-oldBten minutes第49頁,共53頁,2022

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