小学英语数词及专项训练

小学英语数词及专项训练一、数词的分类：基数词和序数词。基数用于表示数量多少，而基数词用于表示次序，常在日期中出现。区别：基数词前面没有“the”；序数词前一定要有“the”。1、超过二十以上的两位数需要在个位和十位之间加上“-”。如：21twenty-one2、用基数词来修饰可数名词时，一定别忘了它的复数形式。如：十八个男孩eighteenboys3、用基数词修饰不可数名词时，如是复数，变它的量词为复数。如：两碗米饭twobowlsofrice4、序数词一般加“th”，特殊的有：first,second,third,fifth,eighth,ninth,twelfth；二十及二十以外的整十：twentieth,thirtieth,fortieth…“第几十几”：前面整十不变，后面“几”改为序数词。如：88eighty-eighth巧记基数词和序数词：1,2,3,特殊记,加th从4起;8少t,9去e,逢5逢12ve变f;20~90,y要变ie;若是几十几,前基后序别倒位.二、数词的表示方法：基数词序数词对照表1onefirst1th2twosecond2nd3threethird3rd4fourfourth4th5fivefifth5th6sixsixth6th7sevenseventh7th8eighteighth8th9nineninth9th10tententh10th11eleveneleventh11th12twelvetwelfth12th13thirteenthirteenth13th14fourteenfourteenth14th15fifteenfifteenth15th16sixteensixteenth16th17seventeenseventeenth17th18eighteeneighteenth18th19nineteennineteenth19th20twentytwentieth20th21twenty-onetwenty-first21st22twenty-twotwenty-second22nd23twenty-threetwenty-third23rd24twenty-fourtwenty-fourth24th25twenty-fivetwenty-fifth25th26twenty-sixtwenty-sixth26th27twenty-seventwenty-seventh27th28twenty-eighttwenty-eighth28th29twenty-ninetwenty-ninth29th30thirtythirtieth30th40fortyfortieth40th50fiftyfiftieth50th60sixtysixtieth60th70seventyseventieth70th80eightyeightieth80th90ninetyninetieth90th100onehundredonehundredth100th三、数词的用法1.章节、页数的读法第一章：thefirstchapter;ChapterOne第二节：thesecondsection;SectionTwo第三课：thethirdlesson;LessonThree第463页：pagefoursixthree第2564页：pagetwofivesixfour或twenty-fivesixty-four注意：如果页码的数字较长，通常用基数词。2.房间、门牌、电话号码的读法第305房间：Roomthreeo（零）five长安街76号：seventy-sixChang'anStreet电话号码：204-2244：telephonenumbertwoo（零）fourtwotwo（doubletwo）fourfour十一路公共汽车：Bus（No.）eleven3.年代、日期、时刻的读法（1）年份是四位数字时，各分成二位来读，eg.公元1995年：1995（=nineteenninety-five）（2）日期使用一般的序数词来读取eg.5月10日：May10th（=Maytenth）（3）时刻通常用基数词来读eg.8点45分：8:45（=eightforty-five）（4）年代表示法：eg.二十世纪九十年代：1990'snineteennineties4.hundred,thousand,million用法：hundred,thousand,million前面有具体数字，要用单数形式，但如果它们后面有of，那它们要用复数形式，同时，前面不能再加具体的数目。eg.twothousand两千thousandsof成千上万hundredsof成百上千millionsof数以百万计Thousandsandthousandsofpeoplehavevisitedthecity.成千上万的人参观了这座城市。四、倍数、分数、小数、百分数的表示方法：1.倍数：time（s）Thisroomisthreetimesaslargeasthatone.这个房间有那个房间三个大。Threethreesarenine.orThreetimesthreeisnine.三三得九。2.分数：分子用基数词表示，分母用序数词表示，分子为2以上时，分母（序数词）应变为复数。三分之一，onethird,athird；五分之三，threefifths数短语作主语时，谓语的数由of后面的名词来决定，名词为可数名词复数，则谓语用复数；名词为不可数名词，谓语用单数。Athirdofthelandiscoveredbyforests.Twothirdsoftheworkersareworkinghard.3.小数：小数点前的基数词与前面所讲的基数词读法完全相同，小数点后面则须将数字一一读出。1.25读作onepointtwofive0.56读作naughtpointfivesix或zeropointfivesix4.百分数：百分号%读作percenteg.5%读作fivepercent五、算式表达法：1.加法A+B=C→AplusBisC.orAandBisC.2.减法A－B=C→AminusBisC.orBfromAisC.3.乘法A×B=C→AtimesBisC.orAmultipliedbyBisC.4.除法A÷B=C→AdividedbyBisC.六、需注意的问题：1.数词＋名词用－连在一起作定语，后面名词不用复数。eg.afour-year-oldboy2.有些结构既有基数词又有序数词。eg.thefirstthreequestionsthelastfiveminutes3.英语中有一些短语包含数词，不能从表面上理解它们的意义eg.oneandtheonly唯一beatonewith与…一致beonallfours匍匐；趴Two'scompany,threeisacrowd二人成伴，三人不欢oneandthesame同一个；完全一样forone举个例子说tentoone十之八九athousandtoone十之八九talknineteentothedozen滔滔不绝bytwosandthrees三三两两inonesandtwos三三两两firstandlast总共firstofall首先fromthefirst从一开始练习：一、汉译英1、十二个家庭2、在上午九点3、在下午4:304、在七月5、第三个孩子6、第一课7、六月一日8、三点零五9、十二个月10、三十九美元11、四分之一12、五分之二二、单项选择1.Thetreeistall.A.fourteenfootsB.fourteenfeetC.fourteenfootD.fortyfoot2.Fiftyplus.A.fourtyisninetyB.fortyisninetyC.thirtyisninetyD.fiftyisninety3.Therearestudentsinthisschool.A.fourhundredfifty-twoB.fourhundredsfiftytwoC.fourhundredandfifty-twoD.fourhundredsandfifty-two4.Myhomeisaboutawayfromtheschool.A.threehundredmetreB.threehundredsmetresC.threehundredmetresD.threehundredmetre5.Decemberisandlastmonthinayear.A.thetwelvethB.twelveC.thetwelfthD.twelfth6.oftheteachersintheschoolarefromcolleges.A.ThreequartersB.Two-thirdC.TwofifthD.Two-ninth7.Thereweretwoworldwarsduringcentury.A.thetwentiesB.thetwentiethC.twentiesD.twentieth8.Intheforties,hisfatherservedintheNewArmy(新四军)，whilehismotherworkedintheRouteArmy(八路军).A.Fourth;EighthB.Four;EighthC.Fourth;eightD.Fourth;eighth9.Wearelearningnow.A.thetwenty-firstlessonB.LessonTwenty-firstC.the21thlessonD.Lesson21st10.Hewillstayherefor.A.oneandhalfmonthB.oneandahalfmonthC.onemonthsandahalfD.oneandahalfmonths11.—What’sthedatetoday?—It’s.A.nineB.MondayC.June5D.11:0012.—Wouldyouliketoeatapples?—No,thankyou.A.moretwoB.twomoreC.twoanotherD.twoelse13.Hesaidhewouldcomebackin.A.oneortwodaysB.oortwodaysC.oneandtwodaysD.adayandtwo14.—Howoftendoyouwritetoyourparentsabroad?—.A.TwiceamonthB.SecondtimesamonthC.AsecondtimeamonthD.secondatimeamonth15.peoplediedinthetrafficaccidentsintheworld.A.ThousandofB.ThousandsofC.TenthousandsofD.Tenthousandof16.Inthe1850s,aboutwascoveredbyforestintheUSA.A.thirdB.athirdC.thethirdD.athirds17.Thisisherbirthday,Ithink.A.twentyB.twentiethC.thetwentiethD.thetwenty’s18.SeptemberisTeachers’Day.A.thetenB.tenthC.thetenthD.theten’s19.Therearechildreninthecountryschool.A.twothousandfivehundredandsixtyB.twothousandsfivehundredandsixtyC.twothousandsfivehundredsandsixtyD.twothousandfivehundredsandsixty20.ofthesoldiersisabouttwothousand.A.AnumberB.ThenumberofC.AgreatnumberD.Theb