小升初英语顺口溜：基数词变序数词
<p> 基数词变序数词(之一)</p><p> 基变序，有规律，</p><p> 词尾字母<span word="tdd">tdd</span>。①</p><p> 八减<span word="t">t</span>，九减<span word="e">e</span>，</p><p> <span word="f">f</span>要把<span word="ve">ve</span>替。②<span word="ty">ty</span>把<span word="y">y</span>变成<span word="i">i</span>，</p><p> 记住<span word="th">th</span>前有个<span word="e">e</span>。③①按：指<span word="first">first</span>、<span word="second">second</span>、<span word="third">third</span>。</p><p> ②按：指<span word="eight">eight</span>去掉<span word="t">t</span>，<span word="nine">nine</span>去掉<span word="e">e</span>，<span word="five">five</span>和<span word="twelve">twelve</span>去掉<span word="ve">ve</span></p><p> 加上<span word="f">f</span>。</p><p> ⑦按：指<span word="twentytwentieth">twentytwentieth</span>等。</p><p> 基数词变序数词(之二)</p><p> 第一、二、三要全变，①</p><p> 其余<span word="th">th</span>加后边，⑧<span word="th">th</span>里有例外，</p><p> 你需格外记明白：</p><p> 八减<span word="t">t</span>，九减<span word="e">e</span>，②</p><p> 字母<span word="f">f</span>代<span word="ve">ve</span>，④<span word="ty">ty</span>变<span word="tie">tie</span>。⑥</p><p> ①<span word="onefirst">onefirst</span>，<span word="twosecond">twosecond</span>，<span word="threethird">threethird</span>。</p><p> ②<span word="four">four</span>-<span word="fourth">fourth</span>，<span word="seven">seven</span>-<span word="seventh">seventh</span>，<span word="hundred">hundred</span>-<span word="hundredth">hundredth</span>。</p><p> ③<span word="eighteighth">eighteighth</span>，<span word="nineninth">nineninth</span>。</p><p> ④<span word="fivefifth">fivefifth</span>，<span word="twelvetwelfth">twelvetwelfth</span>。</p><p> ⑤<span word="twentytwentieth">twentytwentieth</span>，<span word="sixtysixtieth">sixtysixtieth</span>。</p>
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