数词专题练习

数词专题复习教学目标

1.掌握基数词和序数词的用法。

2.能灵活应用基数词和序数词解决实际问题。

数词基数词

序数词数量顺序基数词的构成1）1－12,独立成词。

onetwothreefourfivesixseveneightnineteneleventwelve2）13--19,由3－9+teen构成。

14–fourteen16--sixteen17--seventeen19—nineteen

特殊拼写:13–thirteen15--fifteen18—eighteen

3）20－90,以-ty结尾。

20—twenty30thirty40—forty50—fifty80eighty

60sixty70seventy90—ninety

4）21－99，两位数，十位与个位之间有“－”。

21twenty—one55fifty—five99ninety—nine5）101—999，三位数，百位与十位/个位之间加and。

101onehundredandone840eighthundredandforty693sixhundredandninety-three

序数词的构成1)1－3,first,second,third。2)4－19,相应基数词+th,

特殊拼写:fifth,eighth,ninth,twelfth。3)20－90,y变成ie+th,如twentieth。4)21－99,只把个位的基数词变成序数词如twenty-first。5)序数词缩写数字＋最后两字母

如1st,2nd,3rd,4th…基变序,有规律,一、二、三，特殊记，面目全非要注意，加th从4起，八少“t”，九去“e”，“ve”要用“f”替，(five,twelve)见“y”变成“i”和“e”，词尾加上“th”，(twenty,thirty,……ninety)若是遇到几十几，只变个位就可以。序数词缩写记清楚,数字后跟两字母。(序数词构成规律)基数词的用法1、表示具体数目,hundred,thousand,million不用复数

表示不确定数目,用复数。即hundredsof(数百),thousands

of(数千),millionsof(数百万)+名词复数,

可以用many/several修饰，但不能与具体数目连用。1)Therearethreethousandstudentsinourschool.2)Afterthewar,thousandsofpeoplebecamehomeless.3)Several/Manythousandsoftreesmustbeplantedeveryyear.2、“几十”的复数形式可以表示：

几十多岁in+one’s+数词复数年代in+the+数词复数

1)Hediedinhisforties．四十多岁

2)Inthenineties,mostpeoplegotoworkbybike.90年代3、“基数词+名词”的合成形容词作定语，中间有连字符“－”,当中的名词用单数。

a3–year–oldgirlaseven-dayholiday

4、表计量--“基数词+度量单位+形容词”

Theclassroomis7meterslong,6meterswideand3metershigh.(1)序数词作定语，前面要加the；

Johnlivesonthefifteenthfloor．

SheismyfirstEnglishteacher.(2)有时加a/an，“再一”，“又一”的意思．ShallIaskhimathirdtime?Theyhadasecondchildin1988.序数词的用法编号表示法编号在前，名词在后，用序数词，前面有the编号在后，名词在前，用基数词，注意首字母大写房间号码和电话号码要一个一个分别读.theFirstLesson（the在句子中不大写）LessonOne（大写）thethirty-secondpagePage32/PageThirty-twoRoom305BusNo.12第一课第32页第305房间第12路公共汽车1/4one-fourth

a(one)quarter3/4three-fourthsthreequarters

2/3two-thirds1/2a(one)half

半年halfayear半小时halfanhour一年半oneandahalfyearsoneyearandahalf分数表示法分子用基数词，分母用序数词。分子大于1时，分母加-s。1/21/31/424/253/43threefourths/threequartersonethird/athirdtwenty-fourtwenty-fifthsthreeandsixseventhsonequarter/aquarter/onefourthahalfCanyoureadafraction?

用所给词的适当形式填空1．Theyliveonthe________(five)floor.2．Decemberisthe______________(twelve)monthoftheyear.3．Onmysister's_______(nine)birthday,Igaveherausefulbook.4.Three__________________(four)ofthestudentsinourclasslikebasketball.5．—Howoftendoyougotothemountain?—________________(two)amonth.学以致用fifthtwelfthninthfourthsTwice┃数词

6．Father'sDayisonthe___________(three)SundayofJune.7．Theyliveonthe____________________(twenty­six)floorofthetallbuilding.8．Inthe_______________(eight)picture,youcanseemanyyoungtrees.9．Helefthisparentswhenhewas________________(seven)yearsold.10．It'sthe_______________(thirty)songthathehaswritten.thirdtwenty-sixtheighthseventhirtieth┃数词

专题训练:Thisabigclass,and______ofthestudentsaregirls.A.twothirdB.secondthreeC.twothirdsD.twothreeThequestionsisveryeasy,evena_____childcananswerit.A.three-yearsoldB.threeyearsoldC.three-year-oldD.threeyearoldCC3.Nine_____poundsaweek?That’sverygood.A.hundredofB.hundredsofC.hundredsD.hundred.4.Sharkshavebeenontheearthfor_____years.A.thousandsofB.twothousandsC.twothousandsofD.thousandofDA

7.Theroadisover______metreslong.A.sixhundredsandfifty-twoB.sixhundredandfifty-twoC.sixhundred,fifty-twoD.sixhundred,fiftyandtwo8.Septemberis_____monthoftheyear.A.ninthB.eighthC.theeighthD.theninthBDSummary(小结)1.基数词的构成。2.序数词的构成.3.基数词的用法(hundred,thousand,million、岁数与年代、“基—名”、计量）4.序数词的用法(加the,a/an)5.编号表示法(可用序数词/基数词)6.分数表示法(分子:基数分母:序数词）Homework1、默写基数词和序数词