英语序数词变化规则

lfth3eight----eighth4nine----ninth整十数的序数词是把整十数基数词的词尾ty改为tie再加-th1twenty----twentieth2thirty----thirtieth3forty----fortieth4fifty-----y的序数词吗?整十数的序数1.Sixty----sixtieth2.seventy---seventieth3.eighty----eightieth4,y----ieth你对了吗?几十几的序数词,十位数不变,个位数变成序数词,中间用连字符“-”连接。1.twenty-one21twenty-first21st2.thirty-two32thirty-second32nd3.y-y-ninth99th4.请写出66834855的序数词。两位数序数词的表示方法方法:在阿拉伯数字的后面加上序数词的最后两个字母。例如:first1sttwenty–first21stsecond2ndtwenty–second22ndthird3rdsixty–third63rdfifth5theighty–y-ninth99th序数词的缩写形式基数词变序数词的顺口溜一、二、三,单独记;八去t,九减e;f要把ve替;整十基数变序数,ty改为tie;要是遇到两位数,十位基数个位序,一二三后th加上去。一二三单独记,one→first,two→second,three→third这三个词变化特殊,要单独记;八去t,九减e后再加-th,eight→eighth,nine→ninth;五、十二把ve换成f再加-th,five→fifth,twelve→twelfth;整十先把词尾ty改为tie再加-th,twenty→twentieththirty→thirtieth;两位数时则十位数用基数词,个位数用序数词,twenty-first。解析口诀