初中英语专题六数词

1、6： 数 hundred生活中常见的数生活中常见的数数词的分数词可分为基数词（CardinalNumbers）和序数词（OrdinalNumbers）两种。前者考点一、12345678onehundredand9one(a)-forty 和 fifty;80 的拼写是 eighty。2199是由整十位数加连字符“-”81eighty-one如： 691 six hundred and ninety-one。如：5893 five thousand eight hundred and ninety-three。用 thousand（千）和 million（百万）来表达，其换算关系为：1万=10t

2、housand;1亿=100million;10亿=athousandmillion=abillion（百万），athousandmillionabillion(十亿)般要加 and。如：888，000，000读作：eighthundredandeighty-eightmillionhundredthousandmillionhundredthousand,million,billion后有 of，则要用复数形式(其前面不能再加具体数目)。例如：twomillion200millionsof 数百thousandsof 成千上Thousandsandthousandsofvisitorshav

3、ecometo十二点半(1230)halfpast例如：差十分八点(750) ten to eight差一刻九点(845)aquarterto十二点五十(1250)tento例如：二点四十(2：40)twoforty五点半(5：30) five thirty七点一刻(7：15)seven九点零五(9：05)nine0Eightplus(and)(1) th(2)-ve结尾的改为-fth(3)-ty结尾的改为-tieth(4)熟记 and 1000thone thousandth,1000000th one millionth., 703the seven hundred and third,5

4、480thefivethousandfourhundredand3、注：(1)两位以上的序数词仅个位数部分用序数词,其余部分仍用基数词。如：(2) the. It is said that the gravity(引力) on Mars is only aboutgravity on earth.A.B.C.D., 第一：(the) =1st第三：(the) third=3rd第五：(the) fifth=5th第九十七：(the) ninety-seventh=97th第一百零一：(the)onehundred(and)序数The second is better than the .Heh

5、asbuiltfivebridgessince1950,nowItsSeptemberthe IthappenedonSeptember18th,thetwelfthlessonLesson12) thesecondparagraph=ParagraphTwo) thefourthMiddleSchool(=No.4MiddleSchool) thethirtyeighthroom(=Room38) 38thetenth(Page10)10考点三、数词的特定表示法和1/2：a (one) half, 1/3：a (one) third,2/5：two fifths, 3/4：three qua

6、rters1/25：a twenty fifth, 1/100：a hundredth 3/100： 整数和分数之间须用 and 连接31/2：threeanda5 1/4:读作 five and a quarter 95/12：nineandfivetwelfthsOnehalfofthestudentsare0.9：zeropointnine 或point3.58：threepointfive0.016：0point0one8.025：eightpoint0two99.87：ninetyninepointeightseven %读作 percent 18%： eighteenpercent

7、0.6%： zero point six percent99.9%：ninetyninepointninepercent 0.05%：0 point 0 five percent倍数+asEg：Wehaveproducedthreetimesasmanycomputersaswedidlast倍数+the size（weight，height，depth，width，age，length) Eg：“加”用plus,andadd表示；“等于”is,make,equal等词表示. 1+2=？可表示为：How much is one plus two?Oneplus 如：two thirds of

8、students 三分之二的学生 HowmanypeoplewillcometoBeijingnextItshardtopeople,IA.million B.millions C.threeD.threemillions解题技巧hundred 等单位数词。表示单位的边不能用具体的数字，如：thousands of students。本题中只有 B 项正确市中考-Goodmorning,madam.CanIhelp-Sure,Id likeforcookingvegetables.(2014.省自贡市26.1) A.two cups of teaB.three pieces of breadC

9、.five kilos of oil【答案】C of the earthA.three fourth;isB.three fourths;isC.threeD.three【答案】B -Wellbebackforour ceremony.-Isee.Thatmeansyoullhaveaget-togetherwithyourclassmates years.(2015省黄冈市)B.fifteenth;seven 4.-WhichclasswontheC.hundredD.hundreds【答案】D 单位基数词的约数表达法，结合”of”,加”s”The number of the student

10、s in our school is about nineof them are boys.(2013省铜仁市)A. hundred; Two thirdsB. hundred; Two third C.hundreds; Two thirdsD.hundreds;Twothird【答案】A 单位基数词和分数的表达girlstook13.Igotagood presenton A.B.C.theD.the【答案】B 课后练Howmanyworkersare1ItissaidthatSARShaskilledmore peopleA.threeB.threeC. three hundreds2-

11、What do you think of a war, Li Ming?-Ive no idea. But its a fact thatpeoplehadtoleavetheirhometown during the War on Iraq.A.threeB.millionC.millionsD.severalWeallthinkthatcenturywillbringusmore B.twentieth-C.twenty- Bothofthetworulersarebroken.IwanttobuyB.C.D. Iheardthesportsmeeting hasbeenputoff ,h

12、asntthe3andB.the3thandC.the3rdandD.fourandofthe made up ofTwo-third;B.Two-thirds;C.Two-third;D.Two-thirds;SincesaliteshavebeensentintodozensB.fourC.dozenD.severalJackBoothisB.21yearsC.21-year-D.21yearIvelivedherefortwoandahalfB.twoandahalfC. two year and a halfD.twoyearsandhalf 10Dad, whats the sea like?Well,itslargeandfullofwater.ItcoversoftheA.one B.threeC.three-D.three福州中考与市质TeachersD