Los números ordinales y las fechas.
Ordinales
- 1st first · 2nd second · 3rd third · 4th fourth · 5th fifth
- 9th ninth · 12th twelfth · 20th twentieth · 21st twenty-first
Fechas
- When’s your birthday? → It’s on the 3rd of May.
- in May · on the 3rd of May
Errores frecuentes
- 21st, 22nd, 23rd (no «21th»).
- fifth, ninth, twelfth cambian.
- on con el día, in con el mes.