文档介绍：英语基数词和序数词的记忆规律表英语数词基和序,基表几个序第几。一至十二形各异,一个一个单独记。后面加teen变十几,thirteen,fifteen看仔细,eighteeneighty只有一个t,几十后面加ty,twenty不同重点记。forty没有字母u,thirty,fifty更出奇。十位数后个位数,表示数值几十几,若要表达几十几,几十短横1到9。(如果要表示几十几,在几十后加短横后再添1到9,如twenty-one)Onehundred一百记,若表几百几十几。(到了一百就是Onehundred,那么若我们要表示几百几十几呢)几百and几十几,一千以上加逗号(如:onehundredandtwenty-three,表示一千以上,每进三位用逗号分隔)个位向前三位断,千、百万、十亿算(从个位往前每三位都分断开,逗号前的单位是千、百万、十亿)然后一段一段看,基数规律上述钻。(如123,456读作onehundredandtwenty-threethousandfourhundredandfifty-six)one 1eleven11two 2twelve12twenty20twenty-one21three 3thirteen13thirty30thirty-two32four 4fourteen14forty40forty-three43five 5fifteen15fifty50fifty-four54six 6sixteen16sixty60sixty-five65seven 7seventeen17seventy70seventy-six76eight 8eighteen18eighty80eighty-seven87nine y-eight98ten y-five395基数词变序数词初中英语基数词变序数词口诀基变序,有规律,词尾都加“th”(fourth,sixth);一二三,特殊记,词尾字母“tdd”(first,second,third);八省“t”,九去“e”,(eighth,ninth)"ve"结尾"f"替,(fifth,twelfth)单词“ty”作结尾,“ty”变成“tie”,要是遇到几十几,只变个位就可以one 1firsteleven11eleventhtwo 2secondtwelve12twelfthtwenty20twentiethtwenty-one21twenty-firstthree 3thirdthi