2、1sixty-one以此类推70-79:seventy71seventy-one以此类推80-89:eighty81eighty-one以此类推90-99:ninety91ninety-one以此类推100:onehundred1000:Onethousand10000:tenthousand百万:onemillion二、序数词第1-10:first second third fourth fifth sixth seventh eighth ninth tenth第11-19;eleventh