等。数词重要点拨一、基数词及其主要用法:表示数目的词称基数词。15fifteen242twohundredandforty-two,5058fivethousandandfifty-eight,9,600,000ninemillionsixhundredthousand1.基数词可以用于数字的计算。6+8=14Sixpluseightisfourteen.9-7=2Nineminussevenistwo.7X5=35Seventimesfiveisthirty-five.8÷4=2Eightdividedbyfouristwo.2.基数词可以表示人的大致年龄和年代。Hediedinhisfifties.Thistookplacein1990s/1990's.essfulinhisthirties.3.基数词可以用来表达年份、时间、电话号码。1700seventeenhundred1814eighteenfourteen9:wenty11:30eleventhirty/halfpasteleven5:45fiveforty-five/aquartertosix4.基数词可以用于编号。Numbersix,line4,page19,Bus(No.)332,Platform(No.)5,Room1015.基数词可以和其他词一起构成合成形容词,在句子中作定语。Aone-month-oldbabycanrecognizeitsmotherbysmell.Thiseleven-month-oldbabycanspeakafewwords.(Thebabyiselevenmonthsold.)Theteacheraskedustowriteafour-thousand-wordessayasourhomework.(Therearefourthousandwordsintheessay.)
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