英语数字的读写课件

,Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,1,英语数字的读写,各类英语数字的读写,常用单位读法,1英语数字的读写各类英语数字的读写,一、数词的分类,I,基数词,20,以上的数字,21,78,99,August 8,2024,2,twenty-one,seventy-eight,ninety-nine,一、数词的分类I 基数词August 2,20232tw,区别,teen,和,-ty,twelve thirteen fourteen fifteen,twenty thirty forty fifty,sixteen seventeen eighteen nineteen,sixty seventy eighty ninety,8/8/2024,区别teen和-tytwelve thir,3,2)100,以上的数字,在英国英语中一定用,and,但在美国英语中,and,往往略去。,不定冠词,“a”,只在数的开头,才,和,hundred,，,thousand,等连用。,101,121,999,8/8/2024,4,a/one hundred(and)one,a/one hundred(and)twenty-one,nine hundred(and)ninety-nine,2)100以上的数字8/2/20234a/one hund,3)1000,以上的数字,逆向第一个逗号读,thousand,；向左再推三位，第二个逗号读,million,；第三个逗号读,billion,；第四个逗号就是,trillion,。,1,001,1,121,9,999,4,，,302,，,000,，,000,1,000,000,000,2,782,234,467,8/8/2024,5,a/one thousand(and)one,one thousand one hundred(and)twenty-one,nine thousand nine hundred(and)ninety-nine,four billion three hundred(and)two million,a billion/one billion,two billion,，,seven hundred and eighty-two million,，,two hundred and thirty-four thousand,，,four hundred and sixty-seven,3)1000以上的数字8/2/20235a/one tho,8/8/2024,6,百、千、百万、十亿表示确切的数字时,不用复数形式，可以说,five hundred,three thousand,two million,；但当表示不确切数字,如成百、成千上万,三三两两时,基数词则以复数形式出现,:,hundreds,/,thousands,/,millions,/,billions,of,tens of thousands of,twos and threes.,There are hundreds of people in the hall.,大厅里有数以百计的人。,另外：,three dozen,eggs,three score,years,dozens of,egges,scores of,years,36,个鸡蛋,60,个年,几十个,/,许多鸡蛋,几十年,/,很多年,8/2/20236百、千、百万、十亿表示确切的数字时,不用,II,序数词,20th,21st,32nd,43rd,55th,100th,101st,8/8/2024,7,twentieth,twenty-first,fifty-fifth,hundredth,hundred and first,thirty-second,forty-third,II 序数词8/2/20237twentiethtwenty,the+,序数词：,a+,序数词：,Our class is on,the second,floor.,Would you like to repeat your answer,a second,time?,“,第几,”,“,又一，再一,”,the+序数词：a+序数词：Our class is o,8,二、时刻表示法,英,语中时间的表达方法主要有直接法和借用介词法等,。美,英,用,法基本相似，只是英国用,past,之处，美国通常用,after,；英国用,to,之处，美国常,用,before,。,8/8/2024,9,直接法,借用介词法,07,：,54,08,：,15,09,：,30,09,：,45,10,：,03,20:58,23:55,seven fifty-four,six to eight,eight fifteen,a quarter past eight,nine thirty,half past nine,nine forty-five,a quarter to ten,ten o three,three past ten,twenty fifty-eight,two to twenty-one,twenty-three fifty-five,five to midnight,二、时刻表示法英语中时间的表达方法主要有直接法和借用介词法,2.,表示正点的用法。,11:00,12:00,24:00,会议三点正准时开始；不要迟到！,8/8/2024,10,at 11 oclock,sharp,at twelve,/at noon/midday,at midnight,The meeting starts at 3 oclock sharp;dont be late!,2.表示正点的用法。8/2/202310at 11 oc,三、年月,日,表示法,1.,世纪,可用定冠词,+,序数词,+,世纪,century,表示，也可以用定冠词加百位进数加,s,表示,公元六世纪,公元十八世纪,二十世纪,十七世纪,这里，用百位数整数表示的世纪比这一百位阿拉伯数字本身多一个世纪。,1900,年至,1999,年这一段时期为二十世纪。,8/8/2024,11,the sixth,（,6th,）,century,the eighteenth,（,18th,）,century/,the 1900s/the 1900s,the 1600s/the 1600s,the 1700s/the 1700s,三、年月日表示法1.世纪8/2/202311the six,2.,年代,定冠词,+,基数词表示的世纪,+,十位整数的复数形式,在二十世纪三十年代,in the 1860s,In the 1870s,when Marx was already,in his fifties,，,he found it important to study the situation in Russia,，,so he began to learn Russian,8/8/2024,12,（,in the thirties of the twentieth century,或,in the nineteen thirties,）,（,in the sixties of the 19th century,或,in the eighteen sixties,）,在十九世纪六十年代,在十九世纪七十年代当马克思已经五十多岁时，他发现研究俄国的形势很重要，便开始学习俄语。,in the 1930s/in the 1930s,2.年代8/2/202312（in the thirtie,表示某年代的早期、中期和晚期，可以在定冠词后，年代前添加,early,，,mid-,，,late,in the early 1920s,在二十世纪五十年代中期,8/8/2024,13,在二十世纪二十年代早期,in the mid-1950s,我们英俊的黄工出生于,二十世纪五十年代中期,。他现在,50,多岁。,Our handsome Mr.Huang was born in the mid-1950s.Hes in his fifties(=between 50 and 59 years old).,表示某年代的早期、中期和晚期，可以在定冠词后，年代前,8/8/2024,14,3.,年份,数字表示的年份通常分成两半来说。,2000 BC,1558,1603,253,1902,1800,fifteen fifty-eight,six teen(hundred and)three,或,sixteen oh three,two hundred and fifty-three,或,two fifty-three,nineteen hundred and two,或,nineteen o two,eighteen hundred,two thousand BC,8/2/2023143.年份fifteen fifty-e,在哪个月用介词,in,加第一个字母大写的月份词表示。例如：,in May,在五月；,in July,在七月。为了简便起见，月份与日期连用时，月份常用缩写形式表示。缩写形式除,May,和,September,外，其它的月份都由其前三个字母表示。,January,Jan,一月,February,Feb,二月,March,Mar.,三月,April,Apr,四月,August,Aug,八月,September,Sept,九月,October,Oct,十月,November,Nov,十一月,December,Dec,十二月,注：这里缩写形式后面加点不能省略，因为它是表示缩写形式的符号。,8/8/2024,15,4.,月份,在哪个月用介词in加第一个字母大写的月份词表示。例如：in,5.,日期,在,具体,哪一天要加介词,on,。,National Day is,on Oct.1.,=,National Day is,on the 1st of October,May 5,五月五日,Mar.2,（,nd,）三月,二,日,8/8/2024,16,读作,May(the)fifth,或,the fifth,（,5th,）,of May,读作,March(the)second,或,the second of March,读作,October(the)first,5.日期8/2/202316读作May(the)fif,具体确切的某一天用介词,on,；,通常情况下,morning,，,afternoon,，,evening,等词前用介词,in,。,但是，当这些词前后有一修饰限定的词作为定语，把它们限定为某一天早晨、下午或晚上时，介词,in,应改为,on,。这里的修饰限定词可以是介词短语、名词、形容词、定语从句等。,1.,，,the old man died lonely in his house,在一个寒冷的早晨，这个老人孤独地死在自己的房子里。,8/8/2024,17,On a cold morning,2.The accident happened,这次事故发生在,7,月,7,日下午。,3.We are to have a small test,星期一早晨我们将进行一次小测验。,on the afternoon of July 7,on Monday morning,具体确切的某一天用介词on；8/2/202317On a c,时间的表示方法,(,钟点,星期,年,月,日,),June,2009,June 21,2009,Thursday,June 21,2009,7:00 pm,June 21,2009,7:00,the evening of June 21,2009,7:00 pm,Thursday,June 21,2009,7:00,Thursday evening,June 21,2009,2:00 pm,4:30 pm,Thursday,June 21,2009,in,on,at,from,to,on,at,at,at,on,on,on,on,on,8/8/2024,时间的表示方法(钟点星期年月日)inonatfro,18,四,、分数表示法,分数由基数词和序数词一起表示。基数词作分子，序数词作分母，,若,分子,大于,1,，序数词,须,用复数形式。,3/4,1/3,1/2,1/4,1 1/2,1 1/4,8/8/2024,19,1 1/2 hours,一个半小时（读作,one and a half hours,）,当分数后面接名词时，如果分数表示的值大于,1,，名词用复数；小于,1,，名词用单数。,three fourths,或,three quarters,one third,或,a third,a half,one quarter,或,a quarter,one and a half,one and a quarter,四、分数表示法分数由基数词和序数词一起表示。基数词作分子，序,五,、小数表示法,小数用基数词来表示，以小数点为界，小数点左首的数字为一个单位，表示整数，数字合起来读；小数点右首的数字为一个单位，表示小数，数字分开来读；小数点读作,point,，,0,读作,zero,或,o,ou,。,0.4,10.23,25.67,1.03,8/8/2024,20,zero point four,或,point four,ten point two three,twenty-five point six seven,one point o three,2.,当数字值大于,1,时，小数后面的名词用复数，数字值小于,1,时，小数后面的名词用单数。,1.03 meters,一点零三米,0.49 ton,零点四九吨,五、小数表示法小数用基数词来表示，以小数点为界，小数点左首,六,、百分数表示法,百分数用基数,percent,表示,50,3,0.12,8/8/2024,21,fifty percent,three percent,zero point one two percent,六、百分数表示法百分数用基数percent表示8/2/20,七,、数量表示法,表示长、宽、高、面积等，用基数词,+,单位词（,meter,，,foot,，,inch,，,kilogram,等）,+,形容词（,long,，,wide,，,high,等）表示，或者用基数词,+,单位词,+in+,名词（,length,，,width,，,height,，,weight,等）表示。,2,米长,3,英尺高,4,英寸宽,8/8/2024,22,two meters long,或,two meters in length,three feet high,或,three feet in height,four inches wide,或,four inches in width,This box is,2 kilograms in weight,This wall is,12 meters wide and 12 meters high,这个盒子有两千克重。,这面墙有,12,米宽，,12,米高。,七、数量表示法表示长、宽、高、面积等，用基数词+单位词（me,2.,表示时间、距离时，使用含数词的名词所有格形式作定语。,Its,a few minutes walk,from here to the station.,从这里走到车站要走几分钟。,Its,from here to Shanghai Railway Station.,从,这里,到,上海火车站,是乘车一小时的路程。或：从,这里,到,上海火车站,需要乘车一小时。,8/8/2024,23,an hours ride,表示温度有华氏,(Fahrenheit),和摄氏,(Centigrade),两种。英美均使用华氏作为温度的计量单位。摄氏用法现已日渐普及。,36,32,thirty-six degrees Centigrade(,或,Celsius),thirty-two degrees Fahrenheit,2.表示时间、距离时，使用含数词的名词所有格形式作定语。8,5.,由数词和其他名词构成的名词性短语作定语时，其中的名词用单数形式，名词性短语中各部分间要用连字符“,-,”来连接。,Its,a,five-minute,walk,from the library to the playground,从图书馆到操场需要走五分钟。,她是个十六岁的女孩。,8/8/2024,24,Shes,a,sixteen-year-old,girl,4.below zero,表示零下温度，温度用基数词,+degree,（,s,）,+,单位词（,centigrade,摄氏或,Fahrenheit,华氏）表示。,-4,-5,five degrees below zero,（,centigrade,）,four degrees below zero,（,centigrade,）,一个八岁的女孩,an,8-year-old girl,5.由数词和其他名词构成的名词性短语作定语时，其中的名词用,八、,电话号码与编号,A,电话号码,人们在读电话号码时，习惯一个数字一个数字地说,以求清楚,但有时为了方便起见,也会以十位数为单位,两个两个一起说。,770-2145,可以读为,seven seven zero,two one four five,也可以读为,seven seven o,twenty-one forty-five,8/8/2024,25,读电话号码时，每个数字一一读出，,“o”,英式读,ou,；美式则读,zero(,有时也读,nought),。英国人在读两个相同数字时，通常读成,double3456638,读作：,three four five,，,double six three eight,3074922,读作：,three oh seven,，,four nine double two,而美式则读成：,three zero seven,，,four nine two two,62899033,可读成,six two eight double nine oh double three,或,six two eight nine nine oh double three,B.,编号,第一课：,Lesson One=the first lesson,3,路公共汽车：,Bus No.3=the No.3 bus,302,房间：,Room 302,八、电话号码与编号A电话号码 人们在读电话号码时，习惯一个,如果涉及的数目和单位是不定数，可用单词表示。,about five miles per hour,at least ten yards away,hesitated for a moment or two,I have warned you a hundred times,a discount of 5 percent,over/more than 500 students,some/about/around 800,every four years=every fourth year,every other day=every two days=every second day,every few minutes,rank(the)first,8/8/2024,26,（每小时大约,5,英里）,（至少有,10,码远）,（犹豫了片刻）,（我已经警告你多少遍了）。,（,5%,的折扣）,（超过,500,名学生,）,（大约,800,）,（每四年，每隔三年）,（每两天，每隔一天）,（每隔几分钟）,（排第一）,如果涉及的数目和单位是不定数，可用单词表示。8/2/202,常用单位读法,Units of Length,长度单位,mm,millimeter,cm,centimeter,M,meter,km,kilometer,Units of weight,重量单位,mg,milligram,g,gram,kg,kilogram,T,ton,8/8/2024,27,毫米,厘米,米,千米,毫克,克,千克,吨,常用单位读法8/2/202327毫米厘米米千米毫克克千克吨,Units of capacity,容量单位,ml milliliter,L liter,Square measure,面积单位,m,2,square meter,8/8/2024,28,m,3,cubic meter,Units of length,长度单位,inch,foot,yard,mile,Units of weight,重量单位,ounce,pound,毫升,升,平方米,立方米,英寸,英尺,码,英里,盎司,英镑,Units of capacity 容量单位8/2/2023,Units of capacity,容量单位,pint,quart,gallon,8/8/2024,29,Time,时间,second,minute,quarter,hour,品脱,夸脱,加仑,秒,分,时,刻,Units of capacity 容量单位8/2/2023,