寒假英语学习——不可忽略的数词
<p> 寒假英语学习不可忽略的数词</p><p> 英语中的数词包括基数词和序数词两大类，它们的用法非常复杂，为了便于同学们系统地复习数词，现就初中阶段数词的主要内容作以下归纳。北京第一七一中学 边秋颖</p><p> 一、基本构成</p><p> (一)基数词从1数到<span word="N">N</span></p><p> 1.112的基数词是独立的单词，即： <span word="one">one</span>，<span word="two">two</span>，<span word="three">three</span>，<span word="four">four</span>，<span word="five">five</span>，<span word="six">six</span>，<span word="seven">seven</span>，<span word="eight">eight</span>， <span word="nine">nine</span>，<span word="ten">ten</span>，<span word="eleven">eleven</span>，<span word="twelve">twelve</span>。</p><p> 2.1319的基数词以-<span word="teen">teen</span>结尾。如： <span word="fourteen">fourteen</span>，<span word="seventeen">seventeen</span>等，但13，15，18较特殊， 13<span word="thirteen">thirteen</span> 15<span word="fifteen">fifteen</span> 18<span word="eighteen">eighteen</span>。</p><p> 3.2090的整十位均以-<span word="ty">ty</span>结尾。如： <span word="sixty">sixty</span>，<span word="ninety">ninety</span>，但20，30，40，50，80较特殊， 20<span word="twenty">twenty</span>， 30<span word="thirty">thirty</span>， 40<span word="forty">forty</span> ，50<span word="fifty">fifty</span> ，80<span word="eighty">eighty</span>。</p><p> 4.十位数与个位数之间要加连字符号-，如：28<span word="twenty">twenty</span>-<span word="eight">eight</span>，96<span word="ninety">ninety</span>-<span word="six">six</span>。</p><p> 5.百位和十位(若无十位则和个位)之间加<span word="and">and</span>，如：148<span word="one">one</span> <span word="hundred">hundred</span> <span word="and">and</span> <span word="forty">forty</span>-<span word="eight">eight</span> ，406<span word="four">four</span> <span word="hundred">hundred</span> <span word="and">and</span> <span word="six">six</span>。</p><p> 6.<span word="hundred">hundred</span>(百)，<span word="thousand">thousand</span>(千)，<span word="million">million</span>(百万)，<span word="billion">billion</span>(十亿)等前面即使有具体的数词，也不能在它们的后面加<span word="s">s</span>。如：600<span word="six">six</span> <span word="hundred">hundred</span>，8百万<span word="eight">eight</span> <span word="million">million</span>。</p><p> 7.1000以上的数字，从后往前数每三位加一个逗号，第一个逗号前为千(<span word="thousand">thousand</span>)，第二个逗号前为百万(<span word="million">million</span>)，第三个逗号前为<span word="billion">billion</span>(十亿)。英语中无万这个词，我们可以用几十个千(<span word="thousand">thousand</span>)表示几万，几百个千(<span word="thousand">thousand</span>)表示几十万。如：2，510＝<span word="two">two</span> <span word="thousand">thousand</span> <span word="five">five</span> <span word="hundred">hundred</span> <span word="and">and</span> <span word="ten">ten</span>；84，296＝<span word="eighty">eighty</span>-<span word="four">four</span> <span word="thousand">thousand</span> <span word="two">two</span> <span word="hundred">hundred</span> <span word="and">and</span> <span word="ninety">ninety</span>-<span word="six">six</span>；274，350＝<span word="two">two</span> <span word="hundred">hundred</span> <span word="and">and</span> <span word="seventy">seventy</span>-<span word="four">four</span> <span word="thousand">thousand</span> <span word="three">three</span> <span word="hundred">hundred</span> <span word="and">and</span> <span word="fifty">fifty</span>。</p>
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