Los números ordinales
1st | (the)first | 11th | (the) eleventh |
2nd | (the) second | 12th | (the) twelfth |
3rd | (the) third | 13th | (the) thirteenth |
4th | (the) fourth | 14th | (the) fourteenth |
5th | (the)fifth | 15th | (the) fifteenth |
6th | (the) sixth | 16th | (the) sixteenth |
7th | (the) seventh | 20th | (the) twentieth |
8th | (the) eighth | 40th | (the) fortieth |
9th | (the) ninth | 50th | (the) fiftieth |
10th | (the) tenth | 70th | (the) sixtieth |
21st | (the) twenty-first | 80th | (the) eightieth |
22nd | (the) twenty-second | 90th | (the) ninetieth |
23rd | (the) twenty-third | 100th | (the) hundredth |
24th | (the) twenty-fourth | 1,000th | (the) thousandth |
25th | (the) twenty-fifth | 1,000,000th | (the) millionth |
26th | (the) twenty-sixth | | |
27th | (the) twenty-seventh | | |
28th | (the) twenty-eighth | | |
29th | (the) twenty-ninth | | |
30th | (the) thirtieth | | |
Los números ordinales se forman agregando el sufijo -th a los correspondientes números cardinales, con las variaciones ortográficas evidenciadas en la tabla.
Excepciones:
the first (il primo)
the second (il secondo)
the third (il terzo)
y los compuestos (the twenty-first, the twenty-second ... ).
http://www.ejerciciosingles.eu/leccion/15-numeros-ordinales.aspx