小升初英语复习重点：序数词
<p> 小升初英语复习重点：序数词是英语网特意为大家整理的，希望对同学们有所帮助。更多内容尽在英语网。</p><p> 序数词</p><p> (1)一般在基数词后加<span word="th">th</span></p><p> <span word="eg">eg</span>.<span word="fourfourth">fourfourth</span>，<span word="thirteenthirteenth">thirteenthirteenth</span></p><p> (2)不规则变化</p><p> <span word="onefirst">onefirst</span>，<span word="twosecond">twosecond</span>，<span word="threethird">threethird</span>，<span word="fivefifth">fivefifth</span>，<span word="eighteighth">eighteighth</span>，<span word="nineninth">nineninth</span>，<span word="twelvetwelfth">twelvetwelfth</span></p><p> (3)以<span word="y">y</span>结尾的十位整数，变<span word="y">y</span>为<span word="ie">ie</span>再加<span word="th">th</span></p><p> <span word="twentytwentieth">twentytwentieth</span>， <span word="fortyfortieth">fortyfortieth</span>， <span word="ninetyninetieth">ninetyninetieth</span></p><p> (4)从二十一后的几十几直至几百几十几或几千几百几十几只将个位的基数词变为序数词。</p><p> <span word="twenty">twenty</span>-<span word="first">first</span>，<span word="two">two</span> <span word="hundred">hundred</span> <span word="and">and</span> <span word="forty">forty</span>-<span word="fifth">fifth</span></p><p> 基数词转为序数词的口诀：</p><p> 基变序，有规律，词尾加上-<span word="th">th</span>.</p><p> 一，二，三，特殊记，词尾字母<span word="t">t</span>,<span word="d">d</span>,<span word="d">d</span>.</p><p> 八去<span word="t">t</span>,九去<span word="e">e</span>, <span word="ve">ve</span>要用<span word="f">f</span>替。</p><p> <span word="ty">ty</span>将<span word="y">y</span>变成<span word="i">i</span>，<span word="th">th</span>前面有个<span word="e">e</span>.</p><p> 若是碰到几十几，前用基来后用序。</p><p> 相关内容》》</p><p> 小升初英语复习重点集锦</p>
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