数词的用法PPT课件

.,1,数词,数词分为基数词和序数词。,.,2,一基数词的构成1one11eleven20twenty2two12twelve21twenty-one3three13thirteen30thirty4four14fourteen40forty5five15fifteen50fifty6six16sixteen60sixty7seven17seventeen70seventy8eight18eighteen80eighty9nine19nineteen90ninety10ten100one/ahundred,.,3,基数词的读法,1、百位和十位间用and连接,十位和个位间用-连接,threehundredandtwenty-one,321,2、右往左数,三位一组,逗号隔开.依次是thousand(千)1，000million(百万)1，000,000billion(十亿)1,000,000,000,.,4,1.hundredthousand(表示具体数字)millionbillion2.hundredsthousands(表示概数)millions(数以计)billions,基数词的用法-表示数量,具体数字+,+of+复数名词,.,5,二序数词的构成,1st2nd3rdfourth4th5thsixth6thseventh7th8th9th,first,second,third,fifth,eighth,ninth,nine,.,6,二序数词的构成21twenty-21st22twenty-22nd23twenty-23rd24twenty-fourth24th.,first,scond,third,.,7,练一练一读出下列数字791039991,3026,896,203123,234,438,209第九第四十第五十二第八十六第三百零三_,thethreehundredandthird,.,8,基数词的用法,.,9,oneoclock,tenpasttwo,halfpastthree,twentytofive,aquarterpastfive,aquartertoseven,sevenfifty,表示在几点钟用介词at,1.表时间1)钟点时间,.,10,2)数词表示年月日英语年月日的顺序：月日，年a.在2011年5月1号写作：onMay1(st),2011读作：onthefirstofMay,twothousandandeleven或onMaythefirst,twothousandandelevenb.在1989年9月写作：inSeptember,1989,on+日on+月.日on+年.月.日,in+月in+年in+年.月in+季节,.,11,80%,基数词+percent（%）,3.78,threepointseveneight小数点,基数词的用法2：百分数：,基数词的用法3：小数：,.,12,1）.表示十几岁用teens指从13岁到19岁。在某人十几岁时：inonesteens.2）.表示“几十岁”；用inones+整十数词复数的复数inonesthirties表示在某人三十几岁时（3039岁）。在他五十多岁时，写作_3）18岁：eighteenyearsold4）一个十八岁的男孩：an18-year-oldboy5）,inhisfifties,数词的用法4年龄：,attheageof+年龄：在几岁的时候,.,13,Thewinneris_.Heisan_boy.A.eight-year-old;eightyearsoldB.eightyearsold;eight-year-oldC.eight-yearsold;eight-year-oldHecametoChina_.A.attheageof20B.whenheis20C.atageof20,基数词的用法4年龄,.,14,基数词常与名词构成的合成词在句中作定语，中间要用连字符“-”，这个名词只用单数形式,aseven-dayholidayathree-year-oldgirl,.,15,Theriverisabout_.A.6,000meterslongB.6,000-meters-longC.6,000-meter-long,基数词的用法5：计量,be+数词+量词+形容词,.,16,一倍once，两倍twice，三倍threetimes(三倍或以上：基数词times),基数词的用法6：倍数,Thisboxisfivetimesasbigasthatone.=Thisboxisfourtimesbiggerthanthatone.,A+be+倍数+as+adj.原+as+B.A是B的倍A+be+倍数+adj.比+than+B.A比B（宽，大，长）倍数,.,17,15,分子基数词分母序数词,onefifth,27,分子1分母+s,twosevenths,14,分子a分母quarter,aquarter,34,threequarters,12,ahalf,13,threeandonethird,3,基数词+and+分数,数词的用法7分数：,分子用基数词，分母用序数词，当分子超过“1”时，分母用复数。,.,18,_ofthelandinthatdistrict_coveredwithtreesandgrass.A.Twofifth,isB.Twofifth,areC.Twofifths,isD.Twofifths,are,C,.,19,一般编码用名词+基数词207房三年级一班第五部分第一课3号汽车第一中学,Room207ClassOneGradeThreePartfive=thefifthpartLessonone=thefirstlessonBusNo.3=theNo.3busNo.1MiddleSchool,基数词的用法8编号,基数词也可以表示顺序。thefirstlessonLessonOne,.,20,1）.inthe+数词的复数，意为在年代，如:inthenineties在九十年代可写作：inthe90s2）.inthe+序数词+century,意为在世纪如：在19世纪inthenineteenthcentury在十九世纪三十年代写作_,inthe1830s,数词的用法9世纪年代,.,21,1.Itisnotrarein_thatpeoplein_fiftiesaregoingtouniversityforfurthereducation.A.90s,theB.the90s,/C.90s,theirD.the90s,their2.Jackisnowin_.thethreegradeB.GradeThirdC.GradeThree3.-Peter,howoldisyourfatherthisyear?-_.Andwejusthadapartyforhis_birthdaylastweekFortieth,fortyB.Forty,fortyC.Forty,fortiethD.Fortieth,forthieth,c,C,C,.,22,1.“加”用plus：pls，and或add表示Howmuchistwoplusthree?ItisfiveTwoandthreeisequaltofive2.“减”用minus：mainsHowmuchistenminussix?3.“乘”times或者multiplymltiplai3X4?Howmuchisthreefour?4.“除”用divide的过去分词形式表示164=?Howmuchissixteendividedbyfour?,数词的用法10加减乘除,.,23,注：通常序数词前面要加定冠词the；但出现不定冠词a或an时，则表示“再一”，“又一”。Canyougivemeasecondtime,.,24,人民币RMB：yuan英镑GBP：pound(s)美元USD:dollar(s)欧元EUR:euro（s）,常见钱币单位,jr,.,25,常考习题选择题1.-Whenwasheborn?-Hewasborn_.A.in1988June6B.onJune6,in1988C.inJune6,1988D.onJune6,19882.Thelibraryintheschoolisntlarge.Thereareonly_booksinit.A.sixthousand,fivehundredandforty-oneB.sixthousandandfivehundredandforty-oneC.sixthousandsfivehundredfortyandoneD.sixthousand,fivehundredsandforthone3.AthoughIfailedfourtimes,myfatherencouragedmetotrya_time.A.twoB.fourC.thirdD.fifth,D,A,D,.,26,4.TheOlympicsGamesareheld_.A.everyfouryearsB.everyfouryearC.everyfourthyearsD.everyfour-year5.Theyellowriveris_inChina.ItgoesthroughmanycitiesinChina.A.thesecondlongestriverB.thelongestscondriverC.thesecondlongestriversD.thelongestscondrivers,A,A,.,27,6.Inourschoolmorethan_boys_likeEnglish.A.twofifths;dontB.twofivesdontC.twofifthsdoesntD.scondfivedoesnt7.Thecarcostme_dollars.A.eightthousandsB.eightthousandofC.eightthousandsofD.thousandof8.Thewartookplace_.A.1720sB.1720sC.inthe1720sD.the17209.Igotabeautifulbikeon_birthday.Ilikeitverymuch.A.fifteenthB.fifteenC.myfifteenD.myfifteenth,A,C,D,A,.,28,10Fiveminustwo_three.A.wasB.areC.wereD.is,D,.,29,1026500123456789第一第五第二十一1/32/79.82：00,作业：,5：305:067:587069在1983年在20世纪50年代在1998年4月1号在9月在10月1号,.,30,January1月Jan.February2月Feb.March3月Mar.April4月Apr.May5月May.June6月Jun.July7月Jul.August8月Aug.September-9月Sept.October10月Oct.No