初中英语语法--数词 3页

数词(Numerals)I.基数词(CardinalNumerals)1.12是独立的数字：onetwothreefourfivesixseveneightnineteneleventwelve2.13-19是以后缀-teen结尾的：thirteenfourteenfifteensixteenseventeeneighteennineteen3.20-90八个整十的两位数是以后缀・ty结尾的：twentythirtyfortyfiftysixtyseventyeightyninety4.其他两位数，由整I-的数和个位数合成，中间加连字符46—forty-six92…ninety-two5.百位数和十位数Z间，在英国英语中要用“and”连接，而美国英语中一般不用。569---fivehundred(and)sixty-nine927---ninehundred(and)twenty-seven6.多位数的表示方法：从个位数往左数，每三位被分割成一个单元，每个单元按三位数來读，从倒数第二个单元的后而开始，从右往左依次1)11：thousand,million,billion,trillion等。(在英国英语中，十亿:thousandmillion,万亿：billion;在美国英语中，十亿:billion,万亿:trillion)6,746,413,416,746sixtrillion,sevenhundredandforty-sixbillion,fourhundredandthirteenmillion,fourhundredandsixteenthousand,sevenhundredandforty-six6,987,464,16&944sixtrillion,ninehundredandeighty-sevenbillion,fourhundredandsixty-fourmillion,onehundredandsixty-eightthousand,ninehundredandforty-four4,946,216,416fourbillion,ninehundredandforty-sixmillion,twohundredandsixteenthousand,fourhundredandsixteen.7.基数词的用法：1.hundred,thousand,million,billion,dozen,score等在表示确切数字的时候，示血不可加-s,但是在表示不确切的数字时，后面要加-s,且要加of。sixhundredstudents600学生hundredsofstudents成百上千的学生seventhousandpigs7000头猪thousandsofpigs成T•上万的猪millionsof数以百万计的billionsof数以十亿计的tensofthousandsof成千上万的twodozeneggs=twodozenofeggs两打鸡蛋dozensoftimes许多次fourscoreycars=fourscoreofyears80年scoresofyears许多年(湛江09)-Zhanjiangisreallyabeautifulcity,isn'tit?-Yes,travelersliketocomehereforavisit.A.thousandsofB.thousandofC.thousandD.threethousands(河南09)Thefarmerkeepscowsonhisfarm.A.hundredB.hundredofC.hundredsD.hundredsof2.基数词的复数可以用来表示“年龄”或“年代”。inone'stwenties在某人二十来岁的时候inone'ssixties在某人六十來岁的时候inthetwenties/fifties在二十年代/五十年代3.时间表示方法1)时刻8：20eighttwentytwenty(minutes)past/aftereight9：30ninethirtyhalfpastnine\n1()：45tenforty-fiveaquartertoeleven12：55twelvefifty-fivefiveto/beforeone3：00threeo,clock21：05twenty-oneofive1)年代1802eighteenotwo/eighteenandtwo/eighteenhundredandtwo1956nineteenfifty-six/nineteenhundredandfifty-six2001twothousandandone57BCfifty-sevenBC1000ADonethousandAD2)年、刀、日2H1R：thefirstofFebruary/February(the)first2009年5月11日：theeleventhofMay,2009(英)/May(the)eleventh,20092.页码、住所、房间、电话号码等第9贝.：Pagenine第7行：Lineseven/theseventhline303房间：Roomthreeothree笫6站台：Platform(No.)six38路公车：Bus(No.)threeeight邮编030012：Postalcode(Zipcode)03001213700500961:onethreesevendoubleofivedoubleoninesixone(孝感09)—Thereisawrongwordinline・一Where?—Intheline.A.two;twoB.two;secondC.second;twoD.second;second3.数学运算及公式：3+2=5Threeand(plus)twois(are,equals,equal,makes,make)five.12-8=4Twelveminuseightisfour;Eightfromtwelveleavesfour.4X5=20Fourtimes/multipliedbyfiveistwenty・Fourfivesaretwenty.9F3=3Ninedividedbythreeisthree.Threeintoninegoesthree・5：2fivetotwo2：6=3：9Theratiooftwotosixequalstheratioofthreetonine.5+7<15Fiveplussevenislessthanfifteen.15>5+7Fifteenisgreaterthanfiveplusseven.52=25Fivesquaredistwenty-five.23=8Twocubediseight.24=16Twotothepoweroffourissixtccn.27的3次根是3oThecube(third)rootof27is3.9的2次根是3oThesquarerootof9is3.a的5次根(hefifthrootofa.II.序数词(OrdinalNumerals)1.第一到第三：first,second,third2.笫卩q到笫十九：后面加-th,但是：fifth,eighth,ninth,twelfth03.第二十到第九十：变y为i,加-eth。twenty…twentiethforty…fortieth4.其他两位数将个位数变为序数词即可。twenty-eighttwenty-eighthforty-fiveforty-fifth\n1.三位数以上只变最后一个数词。I35,h=onehundredandthirty-fifth6.序数词可以简写为阿拉们数字加其单词的最后2个字母。21st32nd83rd98lh400th6.序数词的用法1)序数词表顺序时，前面需加定冠词the或形容词性物主代词。Myapartmentisontheeighthfloor.Thisismysecondcomputer・2)序数诃前面加不定冠诃，表示"另一、又一”。=cmothei\Ihavehadthreeapples・CouldIhaveafourthone?(哈尔滨09)—Goodnews!Billwonmedalinthelongjumpjustnow.一Really?That'shisoneatoursportsmeeting.A.a：fourB.an；fourthC・a；fourth(山西09)-Howwasyourdayoffyesterday?-Perfect!Itwasbirthdayofmygrandma's.Wehadabigfamilycelebration.A.eightyB.theeightiethC.eightiethII.分数词(Fractions)先说分子，后说分母，分子用基数词，分母用序数词，当分子犬于1时，分母需加-s。1/2ahalf1/4afourth=aquarter2/5twofifths2/3two-thirds8/5eightoverfive24/5(二又五分Z四)twoandfourfifths98%ninety-eightpercent/percent(兰州09)Aboutoftheworkersinthefactorywereborninthe・A.two-thirds,1970B.two-thirds,1970sC.two-third,1970D.two-third,1970sIII.小数词(Decimals)3.5threepointfive0.4(zero/nought)pointfour0.138(zero/nought)pointonethreeeight15.637fifteenpointsixthreesevenIV.“()”的读法：1.zero:一般说法，在温度和数学上。2.nil/nothing:用于运动比赛，3：0threetonil/nothing3.love:用于网球比赛。4.o:用于电话号码及数学上。