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1、数词数词分为基数词和序数词两种，基数词表数目，序数词表顺序。1.分数表达法：先写基数词表示分子，后写序数词表示分母，如果分子大于1时，分母要加“s”。如：one-fourth,two-fifths,three-tenths2.小数表达法：小数点写作point,小数后的数字应按其数字直接表示出来。如：18.38可写成：eighteenpointthreeeight。3.年、月、时间表达法：年份用基数词，日期用序数词，时间用基数词，其顺序由小到大。4.英语中没有“万”和“亿”，要按十进位法来推算。如：35，845，
2、可写成thirty-fivethousandeighthundredandforty-five。又如：100，000，000可写成ahundredmillion。5.Hundred,thousand,million,dozen,score这些词前面如又表示具体数字的词，它们不能加“s”,反之则须加“s”。如：threehundredpeople,thousandsofpeople。6.两组与数词有关的介词短语：⑴in+定冠词the+数词的复数形式，表示年代。如：inthe1870s或1870’s⑵in+物主代词
3、+数词的复数形式，表示某人的年龄。如：inone’sthirties。一、容易写错的序数词one___________________two____________________three___________________four___________________five___________________nine____________________twelve_________________twenty_________________twenty-one______________二、写出
4、下列分数1/3______________2/3_______________3/5_____________1/2______________1/4_______________3/4______________三、选择1.Mayis________monthof_______year.A.five,theB.fifth,aC.thefive,theD.thefifth,a2.Hepromisedtogiveme________timetofinishreadingthemagazine.A.two-days
5、B.twodaysC.twoday’sD.twodays’3.Hesaidhehadbeenwaitingtherefor__________.A.oneandahalfhoursB.oneandhalfhourC.oneandthehalfhourD.oneandhalfahour4._________ofthestudentshavehandedintheirpapers.A.Two-threeB.Two-thirdC.Two-thirdsD.two-threes5.“2000”reads_________
6、_______A.theyeartwothousandB.theyearofthetwothousandC.theyeartwothousandsD.theyearofthetwothousands6.Hewasborn_______________A.onthefifthofOctober,nineteenninetyB.onthefiveofOctober,nineteenninetyC.inthefifthofOctober,nineteenninetyD.inthefiveofOctober,ninet
7、eenninety7.Indiahadapopulationof_________________.A.fivehundredandninety-sixmillionB.fivehundredandninety-sixmillionpeopleC.fivehundredandninety-sixmillionsD.fivehundredandninety-sixmillionspeople1.Themedicineistobetaken________________A.threetimeadayB.adayt
8、hreetimesC.threetimesadayD.adaythreetime2.TheYangtseRiveris__________longestriverintheworld.A.ThefourthB.fourthC.thefourD.afour3.________oftheland________coveredwithtrees.A.threefourth,isB.three
