¡Yo hablo español! Verbos by David Diego Rodríguez, Ph.D.

Verbos

In Spanish, verbs cause students the most problems. You must remember that verbs have four moods:

infinitive
indicative
subjunctive
imperative

Regular verbs

All verbs are either regular or irregular. There are three kinds of regular verbs:

-ar verbs
-er verbs
-ir verbs

Stem-changing verbs

e > ie
o > ue
e > i

Irregular verbs

Of course, there are irregular verbs that don't follow any of the above-listed patterns:

ser
estar
ir
ver
dar

Tenses

All verbs have tenses, meaning their action either occurs in the past, present, or future.

Aspect

All verbs have aspect that indictes whether their action is either completed or ongoing.

Conjugations

First person
The person speaking:
yo,nosotros, nosotras

Second person
The person spoken to:
tú, vos, usted, vosotros, ustedes

Third person
The person spoken about:
él, ella, ellos, ellas

yo	nosotros/as
tú	vosotros/as
él ella usted	ellos ellas ustedes

When using the formal "usted" and "ustedes" subject pronouns, the third person singular and plural conjugations are used. Technically, you are speaking to a person, but you use the third person to create a "respectful" distance.