英语基数词变序数词口诀

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英语基数词变序数词口诀基变序,有规律,词尾加上-th。一,二,三,特殊记,词尾字母t,d,d。八去t,九除e,ve要用f替,ty将y变成i,th前面有个e。若是碰到几十几,前用基来后用序。整十基数变序数,先把ty变成tie,要是遇上两位数,十位基数,个位序,th最后加上去。一,二,三变字体;th从4上起;8加h,9减e;用f代ve;ty变为tie。解析口诀:one→first,two→second,three→third这三个词变化特殊,要单独记;eight→eighth,nine→ninth,八去t,九去e后再加-th;five→fifth,twelve→twelfth,五、十二把ve换成f再加-th;twenty→twentieth,thirty→thirtieth...整十先把词尾y改为ie再加-th。两位数时则十位数用基数词,个位数用序数词,如:twenty-first。第1first1st第2second2nd第3third3rd第4fourth4th第5fifth5th第6sixth6th第7seventh7th第8eighth8th第9ninth9th第10tenth10th第11eleventh11th第12twelfth12th第13thirteenth13th第14fourteenth14th第15fifteenth15th第16sixteenth16th第17seventeenth17th第18eighteenth18th第19nineteenth19th第20twentieth20th第21twenty-first21st第22twenty-second22nd第23twenty-third23rd第24twenty-fourth24th第25twenty-fifth25th第26twenty-sixth26th第27twenty-seventh27th第28twenty-eighth28th第29twenty-ninth29th第30thirtieth30th第31thirty-first31st第32thirty-second32nd第33thirty-third33rd第34thirty-fourth34th第35thirty-fifth35th第36thirty-sixth36th第37thirty-seventh37th第38thirty-eighth38th第39thirty-ninth39th第40fortieth40th第41forty-first41st第42forty-second42nd第43forty-third43rd第44forty-fourth44th第45forty-fifth45th第46forty-sixth46th第47forty-seventh47th第48forty-eighth48th第49forty-ninth49th第50fiftieth50th第51fifty-first51st第52fifty-second52nd第53fifty-third53rd第54fifty-fourth54th第55fifty-fifth55th第56fifty-sixth56th第57fifty-seventh57th第58fifty-eighth58th第59fifty-ninth59th第60sixtieth60th第61sixty-first61st第62sixty-second62nd第63sixty-third63rd第64sixty-fourth64th第65sixty-fifth65th第66sixty-sixth66th第67sixty-seventh67th第68sixty-eighth68th第69sixty-ninth69th第70seventieth70th第71seventy-first71st第72seventy-second72nd第73seventy-third73rd第74seventy-fourth74th第75seventy-fifth75th第76seventy-sixth76th第77seventy-seventh77th第78seventy-eighth78th第79seventy-ninth79th第80eightieth80th第81eighty-first81st第82eighty-second82nd第83eighty-third83rd第84eighty-fourth84th第85eighty-fifth85th第86eighty-sixth86th第87eighty-seventh87th第88eighty-eighth88th第89eighty-ninth89th第90ninetieth90th第91ninety-first91st第92ninety-second92nd第93ninety-third93rd第94ninety-fourth94th第95ninety-fifth95th第96ninety-sixth96th第97ninety-seventh97th第98ninety-eighth98th第99ninety-ninth99th第100onehundredth100th

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