高考英语配套教学课件《Unit 1 Tales of the unexplained》专题语法攻略（四） 数词译林版必修2
<p> 一、基数词的表示法及用法 1.基数词的表示法 (1)1～12为独立单词 (2)13～19在个位数词的词干上加后缀<span word="teen">teen</span>构成 (3)20～90以<span word="ty">ty</span>结尾 (4)21～99在十位与个位之间加连字符“”，例如：36</p><p> <span word="thirty">thirty</span><span word="six">six</span> (5)101～999由<span word="hundred">hundred</span>加<span word="and">and</span>再加二位数或末位数。例如：</p><p> 263 <span word="two">two</span> <span word="hundred">hundred</span> <span word="and">and</span> <span word="sixty">sixty</span><span word="three">three</span> (6)书写四位以上的数字时，右起每三位加一个“，”。</p><p> 每一个“，”的前一位依次为<span word="thousand">thousand</span>，<span word="million">million</span>，</p><p> <span word="billion">billion</span>。</p><p> 123,406,571,982，这个数字读作<span word="one">one</span> <span word="hundred">hundred</span> <span word="and">and</span></p><p> <span word="twenty">twenty</span><span word="three">three</span></p><p> <span word="four">four</span> <span word="hundred">hundred</span> <span word="and">and</span> <span word="six">six</span></p><p> <span word="five">five</span></p><p> <span word="hundred">hundred</span> <span word="and">and</span> <span word="seventy">seventy</span><span word="one">one</span></p><p> <span word="nine">nine</span> <span word="hundred">hundred</span> <span word="and">and</span></p><p> <span word="eighty">eighty</span><span word="two">two</span>。 <span word="billion">billion</span> <span word="million">million</span> <span word="thousand">thousand</span> [注意] 英语中没有表示“万”和“亿”的数词，“万”用“十千”即“<span word="ten">ten</span> <span word="thousand">thousand</span>”表示；“亿”则用“100个百万”即“<span word="one">one</span> <span word="hundred">hundred</span> <span word="million">million</span>”表示。 2.基数词的用法 (1)基数词可在句中作主语、表语、宾语、定语、同位</p><p> 语、状语等。</p><p> <span word="Eight">Eight</span> <span word="of">of</span> <span word="them">them</span> <span word="are">are</span> <span word="students">students</span>.(主语)</p><p> 他们八个是学生。</p><p> <span word="We">We</span> <span word="two">two</span> <span word="joined">joined</span> <span word="the">the</span> <span word="army">army</span> <span word="in">in</span> 1992.(同位语)</p><p> 我俩1992年参军。</p><p> <span word="I">I</span> <span word="hate">hate</span> <span word="riding">riding</span> <span word="two">two</span> <span word="on">on</span> <span word="a">a</span> <span word="bike">bike</span>.(宾语)</p><p> 我不喜欢骑车带人。 (2)表示确定数字时，如<span word="ten">ten</span>，<span word="hundred">hundred</span>，<span word="thousand">thousand</span>，<span word="million">million</span>，</p>
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