[영문법] 기수, 서수 기수개수를 나타내는 말하나, 둘, 셋, ...서수순서를 나타내는 말 첫째, 둘째, 셋째,... 기수 서수 1 One First 2 Two Second 3 Three Third 4 Four Fourth 5 Five Fifth 6 Six Sixth 7 Seven Seventh 8 Eight Eighth 9 Nine Ninth 10 Ten Tenth 11 Eleven Eleventh 12 Twelve Twelfth 13 Thirteen Thirteenth ... ... ... 20 Twenty Twentieth 30 Thirty Thirtieth 40 Forty Fortieth 100 One hundred One hundredth 1000 One tousnad One thousandth