FHUHS Spanish

The Future and Conditional Indicative tenses share the same stems in the formation of the irregular forms.

There are some patterns in the irregularity of the stems. The following are lists of common verbs which are irregular in the stem in both the future and conditional indicative, arranged by the nature of their irregularity:

er verbs which drop the ‘e’ of the infinitive

Verbs which substitute a ‘d’ for the ‘e’ or ‘i’ of the infinitive

Suppletive Forms

(no pattern to their irregularity–but you can think of them as deleting the ‘c’ and the ‘e’ from the infinitive, even though the ‘c’ and the ‘e’ are in different positions in each verb)

To review the formation of the regular future and conditional forms, see the following:

• Formation of the Regular Future Indicative
• Formation of the Regular Conditional Indicative