《数词的用法及练习》PPT课件.ppt

数词的用法及练习 教学內容 数词就是表示事物的数量和顺序的词 分基数词和序数词两种 一 基数词 二 序数词 教学目标 一 基数词表示数量的多少的词是基数词 如 one two three等 构成方法如下 1 1 12分别由从one到twelve12个各不相同的词表示 2 13 19均以后缀 teen结尾 3 20 90的整十词均以后缀 ty结尾 表示 几十几 时 个位和十位之间需加结字符 如 twenty one thirty two forty three 4 表示具体 准确的数目时 hundred thousand million等词后不能加 s 如 fivehundred sixthousand seventhousand sevenmillion等 5 当hundred thousand等数词与of连用 表示不具体 不准确的数目时 词尾须加 s 如 thousandsofstudents millionsoftrees 二 序数词 序数词表示人和事物的顺序 其构成方法如下 1 不规则变化 2 以 ty结尾的表示 几十 的基数词 先把y变为i 再加 eth 如thirty thirtieth ninety ninetieth等 3 表示 第几十几 时 十位数的 几十 仍用基数词 只把处位部分变成序数词就行了 如 thirty one thirty first forty two forty second等 4 除上述情况外 均在词尾加 th 如 ten tenth onehundred onehundredth 教学过程 step1数词的用法 一 表示事物的编号基数词放在名词的后边 该名词一般要大写 序数字放在名词的前面 加定冠词 如 LessonOne thefirstlessonRowThree thethirdrow 二 年 日 时刻的表达方法1 年 用基数词 日 用序数词 前面要加定冠词 读的顺序是月 日 年 如 1999年5月2日读作 Maythesecond nineteenninety 2 时刻 用基数词表达 同时要注意以下几点 1 表示 整点 时 在基数词后加o clock 如 9o clock 2 分钟小于或等于30分钟的 用 分钟数 past 钟点数 形式 如分钟数大于30分钟的 用 到下一个分钟数所差的分钟数 to 下一个分钟数 形式 也可以依次读钟点数和分钟数 如 7 20twentypastseven或seventwenty 3 注意表示两个特殊的表示分钟的单位词 30分钟用half 15分钟用aquarter 如 6 30读作 halfpastsix5 45读作 aquartertosix6 15读作 aquarterpastsix 三 分数的表达方法 表示分数时 分子用基数词 分母用序数词 分子大于1 分母用复数 分数修饰名词时 后面用短语 如 onethirdofteachersthreeseventhsoftheboys 分别用ahalf和aquarter表示 四 基数词 名词 形容词 只能用在名词前作定语 如 sheisa3 year oldgirl Theyliveina7 storey highbuilding 注 这种结构中名词不能用复数 同时只能作定语 用作表语时 不用连字符 名词用复数 如 Jimis10yearsoldthisyear Jimisa10 year oldboy 专题例析 例1Thenumber2 146isreadas A twothousandsandonehundredandfortyandsix B twothousandandahundredandforty six C twothousand onehundredandforty six D twothousands onehundred forty six 分析 英语数字的读法是有规律的 百位跟十位之间加and 十位与个位用连字符 三位以上的数用逗号分开 第一个逗号代表thousand等 根据数字的读法 可以找出正确答案为C 例2Thereare peopleinmyfamily Weliveinthe floorinatallbuilding A five sixB fifth sixthC fifth sixD five sixth分析 第一个空表示数量肜基数词 第二个空表示顺序用序数词 选D 专题训练 Thisabigclass and ofthestudentsaregirls A twothirdB secondthreeC twothirdsD twothreeThequestionsisveryeasy evena childcananswerit A three yearsoldB threeyearsoldC three year oldD threeyearold3 The manontheleftisBeckman afamousfootballplayer A twoB secondC three4 Whichclasswonthematchintheend I mnotsure Maybe did A ClassThirdB ClassThreeC thirdthreeD classthree C C B B 5 Nine poundsaweek That sverygood A hundredofB hundredsofC hundredsD hundred 6 Sharkshavebeenontheearthfor years A thousandsofB twothousandsC twothousandsofD thousandof7 peoplecometoJilintovisitMountChangbaieveryyear A ThousandsofB ThousandofC ThousandsD Thousand8 Thecomputerwascheap Ispentonlytwo yuanonit A thousandsB thousandC thousandsofD thousandof D A A B 9 About oftheworkersintheclothesfactoryarewomen A thirdfifthsB thirdfifthC threefifthsD threefifth10 Theroadisover metreslong A sixhundredsandfifty twoB sixhundredandfifty twoC sixhundred fifty twoD sixhundred fiftyandtwo11 Septemberis monthoftheyear A ninthB eighthC theeighthD theninth12 It sabout kilometresfromNanningtoBeijing A twothousandfivehundredandsixtyB twothousandfivehundredsandsixtyC twothousandsfivehundredandsixtyD twothousandsfivehundredsandsixty C B D A 13 Everyyear fishesarekilledbythepollutedwater A millionofB millionsofC twomillionsofD twomillions14 Theboytoldtheoldwoman Thetrainwillarriveattwototwo Itmeans A 2 02B 2 20C 1 58D 1 4015 Sarasaidwewouldmeetat infrontofthemuseum A onethirtyB halfanhourC oneandthirtyD onepastthirty16 We llhavea holidayaftertheexam A twomonthB two monthC twomonth sD two months B C A B 17 Nowchildren turntopage andlookatthe pictureinLessonTwo A twentieth oneB twenty oneC twentieth firstD twenty first18 Todaywearegoingtolearnthe lesson A twentyB twentithC twentiethD twentyth19 Dinosaureggswerefoundinthe A 1990B 1990thC 1990sD 1990s 20 HowoftendoItakeit A twiceB twiceadayC twiceonedayD intwicedays D C C B A 21 Howmanymagazinesdoyouhave Ihave A twoB bothC twiceD thesecond 22 Threehundredthousandonehundredandseventymeans A 3 170B 3 117C 300 170D 30 170 23 OnMay peopletraveledroundthecountry A thefirst millionsB thefirst millionsofC first themillionthD first millions 24 ofthemarediningatschool A TwelveB TwelfthC ThetwelveD the12th 25 It s7 17isread A sevenandseventeenB sevensevenC sevenonesevenD sevenseventeen C B A D B 26 Whichroomdoyoulivein A The201RoomB Room201C Room201stD The201 sRoom 27 ThePeople sLiberationArmywasfounded A onAugust1 1927B in1927 1AugustC on1927 August1st D inAugust1 1927 28 Three sevenistwenty one A plusB minusC timesD dividedby 29 Forty two sevenissix A plusB minusC timesD dividedby 30 Thereare daysinayear A threehundredsixtyandfiveB threehundredandsixty fiveC threehundredsandsixty fiveD threehundredsixty five A C D B C 31 Thereare studentsinthatschool A twothousandeight sixB twothousandeighty sixC twothousandandeighty sixD twothousandsandeighty six 32 Ittookme togetthere A twohoursandahalfB twohoursandhalfC twohourandahalfD twohourandhalf 33 Septemberis monthoftheyear A theninethB theninthC ninethD ninth 34 Pleasepassme bookontheleft A thirdB threeC thethirdD thethree 35 isaverytallboy A ThetwelveB ThetwelvethC ThetwelfethD Thetwelfth A B C D C 36 Wehaveknowneachotherfor A ayearandhalfB ayearwithhalfC ayearandahalfD ayearwithahalf 37 Whatyearisit It s A nineteenhundredandninety sevenB nineteenandninety sevenC nineteenninetyandsevenD nineteenninety seven 38 What sthedatetoday It s A TuesdayB JuneFourthC JunethefourD Junethefourth 39 ThetrainfromShanghaiwillarrive A inquarterpastsixB inaquarterpastsixC atquarterpastsixD ataquarterpastsix 40 Myfriendwasbornon A threeofJuly 1979B thethirdofJuly 1979C 1979 JulythethirdD 1979 thethirdofJuly D D D B D 41 AbrahamLincolnwas PresidentoftheUnitedStates A 16B the16C 16thD the16th 42 Doyouthinkthereisanyroomforus A twoB thetwoC secondD thesecond 43 Whichnumberiswrong A NinetyB NinteenC NinthD Nineteenth 44 Theoldprofessorstillworkshardthoughheis A inhissixtyB inhissixtiesC insixtiesD inthesixty 45 Thisclassroomis ours A threetimesbigasB asthreetimesbigasC threetimesasbigasD asbigthreetimesas 46 Whichofthefollowingiswrong A Heisafifteen year oldboy B Heisattheageof15 C Heisaboyof15 D Heisfifteenyearold A B B C D IlikeAutumnverymuch anditisthe 第三 seasonoftheyear Septemberisinautumn Itisthe 第九 monthofthear Septemberthe 第八 ismybrother birthday Helivesinatall 高楼 onthe 第12 floor Inhisfamily thereare 四 members hiswifeis 三 yearsyounger 比 him She sonly 二十七 yearsold theyhave 住 thereforfouryears Tomorrowisthe 第一 dayofthisweek Theyaregoingtohaveapartywiththeirneighbours Theyenjoylivingthereverymuch third ninth eighth building twelfth four three than twenty seven lived first Step3词汇运用 Step4reading At8 00onthemorningof26thDecember 2004 anunderseaearthquakehappenedoffthecoastofSumatraIndonesiawhicharousedtsunamis Thedeathnumberinthesecountriesreached7 000bytheendofthatday withthousandsofpeoplereportedmissing ByDecember29th thenumberofvictimsintheareaswasover80 000 Thisisthestrongestearthquakeinthe15yearsandhasbeenthefifthlargestearthquakeintheworldsince1900 Thehugewaveswereas1