2015年职称英语考试综合类语法词汇指导(八)
<p> 序数词：表示顺序的数词叫序数词。 </p><p> 1.英语的序数词基本变法：</p><p> 一般在基数词后加<span word="th">th</span></p><p> -<span word="ve">ve</span>结尾的改为-<span word="fth">fth</span></p><p> -<span word="ty">ty</span>结尾的改为-<span word="tieth">tieth</span></p><p> 熟记特殊词</p><p> 2.注：两位以上的序数词仅个位数部分用序数词,其余部分仍用基数词。如：<span word="thirty">thirty</span>-<span word="sixth">sixth</span>,</p><p> 使用序数词时一般加定冠词<span word="the">the</span>. 如：<span word="Im">Im</span> <span word="in">in</span> <span word="the">the</span> <span word="third">third</span> <span word="grade">grade</span>.</p><p> 序数词作几分之几讲时,有复数形式。如：1/5<span word="one">one</span> <span word="fifth">fifth</span> ; 2/3 <span word="two">two</span> <span word="thirds">thirds</span> ; 4/7 <span word="four">four</span> <span word="sevenths">sevenths</span> ; 1/2 <span word="a">a</span> <span word="half">half</span> ; 1/4<span word="a">a</span> <span word="quarter">quarter</span> ; 3/4 <span word="three">three</span> <span word="quarters">quarters</span> ; 50% <span word="fifty">fifty</span> <span word="hundredths">hundredths</span> .</p><p> 数词的用法：</p><p> 1.表示年份：2002: <span word="twenty">twenty</span> <span word="thousand">thousand</span> <span word="and">and</span> <span word="two">two</span> ; 1976 : <span word="nineteen">nineteen</span> <span word="seventy">seventy</span>-<span word="six">six</span>.</p><p> 2.表示日期： 12月1日: <span word="Dec">Dec</span>.1<span word="st">st</span>或<span word="the">the</span> <span word="first">first</span> <span word="of">of</span> <span word="December">December</span>;2002年11月8日: <span word="Nov">Nov</span>. 8<span word="th">th</span>, 2002.</p><p> 3.表示时刻： 5：15 <span word="five">five</span> <span word="fifteen">fifteen</span>或<span word="a">a</span> <span word="quarter">quarter</span> <span word="past">past</span> <span word="five">five</span> ; 8：30 <span word="eight">eight</span> <span word="thirty">thirty</span>或<span word="half">half</span> <span word="past">past</span> <span word="eight">eight</span> ; 10：45 <span word="ten">ten</span> <span word="forty">forty</span>-<span word="five">five</span>或<span word="a">a</span> <span word="quarter">quarter</span> <span word="to">to</span> <span word="eleven">eleven</span>.</p><p> 4.表示编号：<span word="Room">Room</span> 105<span word="Room">Room</span> <span word="one">one</span> 0 <span word="five">five</span>; <span word="Bus">Bus</span> <span word="No">No</span>.13<span word="Bus">Bus</span> <span word="Number">Number</span> <span word="Thirteen">Thirteen</span>; <span word="P">P</span>.5<span word="Page">Page</span> <span word="Five">Five</span>; <span word="Tel">Tel</span>.<span word="No">No</span>.7658659<span word="Telephone">Telephone</span> <span word="Number">Number</span> <span word="seven">seven</span>-<span word="six">six</span>-<span word="five">five</span>-<span word="eight">eight</span>-<span word="six">six</span>-<span word="five">five</span>-<span word="nine">nine</span></p><p> 5.小数的读法：5.7 <span word="five">five</span> <span word="point">point</span> <span word="seven">seven</span>, 0.16 <span word="zero">zero</span> <span word="point">point</span> <span word="one">one</span> <span word="six">six</span>.</p><p> 6.半的表达： 1/2<span word="half">half</span>, 半小时<span word="half">half</span> <span word="an">an</span> <span word="hour">hour</span>, 1.5小时<span word="one">one</span> <span word="and">and</span> <span word="a">a</span> <span word="half">half</span> <span word="hours">hours</span>或<span word="one">one</span> <span word="hour">hour</span> <span word="and">and</span> <span word="a">a</span> <span word="half">half</span>.</p>
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