江苏省苏州市蓝缨学校高三英语数词精品教案二、序数词序数词的缩写形式如first---1stsecond---2ndthirty-first---31st等。三、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+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；3/37threeandthree-sevenths.2.7冠词练习1.WhenLindawasachild,hermotheralwaysletherhave______bed.a.thebreakfastinb.thebreakfastinthec.breakfastind.breakfastinthe2.Hehaspromisedtogiveup______hundredsoftimes.a.atobaccob.tobaccoc.thetobaccod.tobaccos3.______usuallygotochurcheverySunday.a.TheBrownb.ABrownc.Brownsd.TheBrowns4.Thetrainisrunningfiftymiles______.a.anhourb.onehourc.thehourd.ahour5.Hecanplayalmosteverykindofmusicinstrumentbutheisgood______.a.atthefluteb.atflutec.atafluted.atthatflute6.Theinvestigatorsfoundthatmoreshouldbedonefor______inIndia.a.thosepoorb.apoorc.poord.thepoor7.Youlookinhighspirit.Youmusthave______duringyourholiday.a.wonderfultimeb.awonderfultimec.thewonderfultimed.somewonderfultime8.Thecityassignedapolicemantotheschoolcrossingbecause______traffictherewassoheavy.aab.anc.thed.one9.Anewteacherwassenttothevillageinplaceof______onewhohadretired.a.ab.thec.and.its10.Virtueandvicearebeforeyou;______leadsyoutohappiness,______tomisery.a.theformer…latterb.aformer…alatterc.theformer…thelatterd.former…latter11.Thechildreninthekinder-gardensoontook______totheirteachers.a.quitefancyb.aquitefancyc.quiteafancyd.thequitefancy12.______tendtobemoanthelackofcharacterintheyounggeneration.a.Theoldb.Oldc.Elderlyd.Older13.Amansufferingfromachockshouldbegiven______.a.hotsweetteab.ahotsweetteac.thehotsweettead.onehotsweettea14.Heansweredmyquestionswith______nottobeexpectedofanordinaryschoolboy.a.hisaccuracyb.aaccuracyc.theaccuracyd.anaccuracy15.Ifyougobytrainyoucanhavequite______comfortablejourney.a.theb.onec.ad.that16.We’regoingto______with______today,aren’twe?a.thetea…theSmithsb.tea…thoseSmithsc.atea…aSmithd.tea…theSmiths17.Iwantanassistantwith______knowledgeofFrenchand______experienceofofficeroutine.a.the…theb.a…thec.a…and.the…an18.Ann’shabitofridingamotorcycleupanddowntheroadearlyinthemorningannoyedtheneighborsand______theytookhertothecourt.a.intheendb.attheendc.inanendd.inend19.Itisreportedthattoday______presidentwillhavelunchwith______PresidentOmon.a.the…theb.a…ac.the…/d./…/20.TiananMenSquareand______GreatWallaretowoftheplaceseveryoneshouldseein______People’sRepublicofChina.a.the…theb./…/c.the…/d./…the
