Purpose
By the end of this lesson, you will be able to conjugate regular verbs from all three Spanish conjugation groups in the present tense.
Lesson Explanation
Spanish verbs fall into three groups by infinitive ending: -ar, -er, and -ir. The -ar group, modeled on hablar (to speak): hablo, hablas, habla, hablamos, habláis, hablan.
The -er group, modeled on comer (to eat): como, comes, come, comemos, coméis, comen. The -ir group, modeled on vivir (to live): vivo, vives, vive, vivimos, vivís, viven. Note that -er and -ir share nearly identical endings, differing only in the nosotros and vosotros forms.
A genuinely important complication beyond these regular patterns: many common verbs are stem-changing, altering their root vowel in all forms except nosotros and vosotros. The e→ie pattern: querer → quiero, quieres, quiere, queremos, queréis, quieren. The o→ue pattern: poder → puedo, puedes, puede, podemos, podéis, pueden. The e→i pattern: pedir → pido, pides, pide, pedimos, pedís, piden.
These stem changes must genuinely be memorized per verb, since spelling alone doesn’t predict which verbs undergo them. A separate, unrelated group of verbs is simply irregular in the yo form only: tener → tengo, hacer → hago, dar → doy — with all other forms following regular or stem-changing patterns as appropriate.
Practice Questions
1. What are the three infinitive endings for Spanish verbs?
View Answer
-ar, -er, and -ir.
2. Conjugate “hablar” for “yo.”
View Answer
Hablo.
3. Conjugate “comer” for “tú.”
View Answer
Comes.
4. In which two forms do -er and -ir endings differ from each other?
View Answer
Nosotros and vosotros.
5. What is a stem-changing verb?
View Answer
A verb that alters its root vowel in all forms except nosotros and vosotros.
6. Conjugate “querer” (e→ie) for “yo.”
View Answer
Quiero.
7. Conjugate “poder” (o→ue) for “tú.”
View Answer
Puedes.
8. Conjugate “pedir” (e→i) for “él.”
View Answer
Pide.
9. Do “nosotros” and “vosotros” forms undergo the stem change?
View Answer
No, they stay regular.
10. Can you predict which verbs are stem-changing from spelling alone?
View Answer
No, it must be memorized per verb.
11. Write the irregular “yo” form of “tener.”
View Answer
Tengo.
12. Write the irregular “yo” form of “dar.”
View Answer
Doy.