2014高考英语语法专项复习数词素材.doc

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1、第13章数词一.概念:数词分两类:基数词和序数词.表示数目的词叫基数词,表示须序的词叫序数词.二.相关知识点精讲1.基数词　　1）基数词一般可写成如345或threehundredandforty-five。　　2）基数词一般是单数形式，但遇下列情况，常用复数：　　a.与of短语连用，表示概数，不能与具体数目连用，如scoresofpeople指许多人；　　b.在一些表示"一排"或"一组"的词组里。例如：Theyarrivedintwosandthrees.　他们三三两两的到了。　　c.表示"几十岁"。　　d.表示"年代"，用in+the+数词复数。　　e.在乘法运

2、算的一种表示法里，如Threefivesis（are）fifteen。2.序数词　　序数词的缩写形式如first---1st　second---2nd　thirty-first---31st等。　3.数词的用法　　1）倍数表示法　　a.主语+谓语+倍数（或分数）+as+adj.+as。例如　　　Ihavethreetimesasmanyasyou.　我有你三倍那么多。　　b.主语+谓语+倍数（分数）+thesize（amount，length…）of…。例如：　　　Theearthis49timesthesizeofthemoon.　地球是月球的49倍。　　c.主语

3、+谓语+倍数（分数）+形容词（副词）比较级+than…。例如：　　Thegrainoutputis8percenthigherthisyearthanthatoflastyear.今年比去年粮食产量增加8%。　　d.还可以用by+倍数，表示增加多少倍。例如：　　Theproductionofgrainhasbeenincreasedbyfourtimesthisyear.今年粮食产量增加了4倍。　　2）分数表示法的构成：基数词代表分子，序数词代表分母。分子大于1时，分子的序数词用单数，分母序数词用复数。例如：　　1/3one-third；3/37threeandth

4、ree-sevenths.三.巩固练习1.______martyrshaveheroicallylaiddowntheirlivesforthepeople.a.Thousanduponthousandofb.Thousandandthousandsofc.Thousandsuponthousandsofd.Thousandandthousandof2.Theyreceived______oflettersabouttheirTVprograms.a.dozenb.dozenanddozencscored.dozens3.Whoisthatman,______int

5、hefrontrow?a.oneb.theonec.firstd.thefirst4.Wehaveproduced______thisyearaswedidin1993.a.asmuchcottontwiceb.astwicemuchcottonc.muchastwicecottond.twiceasmuchcotton5.Theearthisabout______asthemoon.a.asfiftytimebigb.fiftytimesasbigc.asbigfiftytimed.fiftyastimesbig6.ThepopulationofmanyAlask

6、ancitieshas______inthepastthreeyears.a.morethandoubledb.moredoubledthanc.muchthandoubledd.muchdoubledthan7.Themoonisabout_____indiameterasdiameterastheearth.a.one-threeaslargeb.onethreeaslargec.one-thirdaslarged.onethirdaslarge8.Fivehundredyuanamonth_____enoughtoliveon.a.isb.arec.isbei

7、ngd.hasbeen9.______ofthebuildingswereruined.a.Threefourthb.Threefourc.Three-fourthsd.Three-four10.Consult_____forquestionsaboutearthquakes.a.thesixindexb.indexsixc.sixthindexd.indexnumberingsix四.答案CDDDBACACB