General Case of Conjugation of Verbs in -ir
The typical example of third group verbs is "vivir". In order not to break the rule, we will also start from this verb.
In the table below, we separate the stem from the ending. The stem is the invariable part of the verb. It is common to all tenses. The ending, on the other hand, changes depending on the tense and mood.
However, note that the endings of verbs in -ir are almost identical to those in -er. We mark with an asterisk the endings that change in order to better memorize them.
Indicative
| Person | Present | Imperfect | Preterite | Future | Conditional |
|
yo tú él nosotros vosotros ellos |
viv - o viv - es viv - e viv - imos* viv - ís* viv - en |
viv - ía viv - ías viv - ía viv - íamos viv - íais viv - ían |
viv - í viv - iste viv - ió viv - imos viv - isteis viv - ieron |
viv - ir - é viv - ir - ás viv - ir - á viv - ir - emos viv - ir - éis viv - ir - án |
viv - ir - ía viv - ir - ías viv - ir - ía viv - ir - íamos viv - ir - íais viv - ir - ían |
Subjunctive
| Person | Present | Imperfect (1) | Imperfect (2) | Future |
|
que yo que tú que él que nosotros que vosotros que ellos |
viv - a viv - as viv - a viv - amos viv - áis viv - an |
viv - iera viv - ieras viv - iera viv - iéramos viv - ierais viv - ieran |
viv - iese viv - ieses viv - iese viv - iésemos viv - ieseis viv - iesen |
viv - iere viv - ieres viv - iere viv - iéremos viv - iereis viv - ieren |
Imperative
| Person | Affirmative | Negative |
|
(yo) (tú) (usted) (nosotros) (vosotros) (ustedes) |
- viv - e viv - a viv - amos viv - id* viv - an |
- no viv - as no viv - a no viv - amos no viv - áis no viv - an |
Impersonal Forms
| Person | Gerund | Participle | Infinitive |
|
viv - iendo |
viv - ido |
viv - ir* |
* ending different from verbs in -er