大学英语B学习指导2014秋(数词)

numerals数词基数词oneeleventwotwelvetwentyhundred百threethirteenthirtyThousand千fourfourteenfortytenthousand万fivefifteenfiftyhundredthousand十万sixsixteensixtymillion百万sevenseventeenseventybillion十亿eighteighteeneightytrillion万亿ninenineteenninetyten基数词的写法13-19:teen,thirteen,nineteen20-90,ty:twenty,ninety21-99,:twenty-one,eighty-eight百：Onehundredandfive千：2010twothousandandten万：10,000tenthousand,100,000onehundredthousand百万：1，000，000onemillion一亿：100，000，000onehundredmillion十亿：1,000,000,000onebillion序数词firsteleventhsecondtwelfthtwentieththirdthirteenthhundredthfourthfourteenththousandthfifthfifteenthmillionthsixthsixteenthbillionseventhseventeenthtrillioneightheighteenthninthnineteenthtenth分数分子:基数分母:序数(当分子大于一时,有复数形式)1/3:onethird2/3:twothirds32/3:twoandtwothirds1/2:(one/a)half¼:onefourth;aquarter¾:threequarters小数1.5:

one

point

five

0.2:

zero

point

two/

point

two

6.03

six

point

o

three百分数

33%:

thirty-three

percent

0.72%

zero

point

seven

two

percent时间表达1时刻Igetupatsixo’clock.Wewillfinishtheworkathalfpastten.Itbegantorainattwentytotwo.3.50:threefifty3.15:threefifteen,aquarterpastthree3.45:threeforty-five,aquartertofouram上午pm下午2日期（美）月+日（序数词），年（英）日（序数词）+月，年June22nd,201422ndJune,2014the日期（序数词）of月the22ndofJune,20143年代20世纪90年代（初期/中期/晚期）inthe(early/mid-/late)1990s世纪inthe21stCentury千年millenium4年龄…yearsold（表语）Heiselevenyearsold.他十一岁。-year-old（定语）aneleven-year-oldboy十一岁的男孩attheageof在几岁时Hebegantosellnewspapersattheageof14.他在十四岁时开始卖报纸。inone’searly/mid-/latetwenties二十岁出头/五六/七八Mostwomengetmarriedintheir20s.多数女人在二十多岁时结婚。基数词不管多大，本身都没有复数，如Therewereabouttenthousandpeopletakingintothestreet（游行）today.a-hundred-year-oldman但一旦数词转化为名词，即数词+of其他（复数）名词，表述“成百上千“等，用复数形式,如tens,dozens（成打）,scores（二十）,hundreds,thousands,millionsTherewereseveralthousandsofpeopletakingintothestreet（游行）today.倍数同等asmuch/manyas;thesameas;equal(v.)Heearnsasmuchashiswife.他挣的钱和妻子一样多。

Hissalary（工资）isthesameashiswife’s.Hissalaryequalshiswife’s.

两倍twice/double(v.)Heearnstwiceasmuchashiswife.Hissalarydoubleshiswife’s.三倍threetimes/triple(v.)Heearnsthreetimesasmuchashiswife.Hissalarytripleshiswife’s.

次数Once一次twice两次threetimes三次fourtimes四次算术加and/plus:3+4=7:threeplus/andfourisseven.减minus9-1=8:nineminusoneiseight.乘multiply5×8=40:fiveeightsareforty.除:dividedby…equal/is10÷5=2:tendividedbytwoisfive.常用的数字前缀semi-:半

semi-final半决赛uni-:一

uniform统一的服装，制服；unicorn

独角兽mono-:一

monologue

独白bi-:二

bilingual

双语的；bicycle

单车tri-:三

tricycle

三轮车；triangle三角形

centi-:一百/百分之一

cent一分钱；century世纪（一百年）centimeter厘米milli:千/千分之一

millimeter千米;millilitre毫升kilo-:千

kilogram公斤（千克）；kilometer公里（千米）multi-:多

multinational多国的;multimedia多媒体的练习1.Thereare____employeesandseveralemployersinthecompany.A.athousandofB.thousandC.thousandsofD.thousands2.Wewillhavea____holidaynextmonth.A.5-daysB.5-day’sC.5daysD.5-day3.Thisisagoodbook.Ihavereaditanddecidetoreadit____.A.thesecondtimeB.asecondtimeC.twotimeD.twotimes4.About____oftheteachersinourschool____underthirty.A.twothirds;areB.second-two;isC.twofifths;areD.threefifths;is5.Hermotheris____.A.inthefiftiesB.inthefiftyC.inherfiftiesD.inherfifty6.Whenwereyouborn?Iwasborn____.A.onJuly3rd,1973B.inJuly3,1973C.onJuly3,1973D.inJuly3rd,19737.Whattimeisitnow?____.A.tentonine.B.fiftypasteight.C.eightpastfiftyD.fiftyeight8.ThesecondWorldWarbrokeoutin____.A.1930’sB.the1930sC.the1930’sD.1930s9.Theweightofthemooniso