| Form | ellos preterite without -ron + re | Si procediere, se devolverá el importe. | If applicable, the amount will be refunded. |
| Endings | re / res / remos / ren | Donde fueres, haz lo que vieres. | When in Rome, do as the Romans do. |
| Compound form | hubiere + past participle | Si el plazo hubiere vencido, se rechazará la solicitud. | If the deadline has expired, the application will be rejected. |
| Legal language | a condition or a possible case in the law | Si hubiere una disposición contraria, esta no se aplicará. | If there is a contrary provision, it will not apply. |
| Literary language | what is possible in verse and in prose | Cuando la noche cayere, volveremos a la orilla. | When night falls, we will go back to the shore. |
| Set phrases | inherited formulas and proverbs | Venga lo que viniere, estaré contigo. / Sea como fuere, saldremos mañana. | Come what may, I'll be with you. / Be that as it may, we'll leave tomorrow. |
| Modern usage | the present subjunctive or indicative takes its place | Quien incumpla la norma será sancionado. | Whoever breaks the rule will be penalised. |
| Trap | the stem comes from the preterite: vieron → viere | Haz lo que vieres. | Do as you see. |
| Trap | the nosotros form takes a written accent | Si lo hiciéremos juntos, saldrá bien. | If we do it together, it will turn out well. |