There are two types of irregular verbs in Spanish:
- The ones that have a change in their vocal form: Contar to Cuento / Perder to Pierdo
- The ones that have a change in their consonant consonant: Deducir to Deduzco / Enloquecer to Enloquezco
Resources for further reading:
Why Complicate Things? The Role of Irregular Verbs in Spanish
Why do irregular verbs exist in Spanish? Just as in English, irregular verbs have evolved as a result of spoken usage and ease of pronunciation. For example, compare the sounds of the word teno with the word tengo. The second word sounds cleaner and clearer, doesn’t it?
If tener was a regular verb, its “yo” form would be “teno.” But it’s not. Look at the verb endings for venir and tener in the following table:
| Pronoun pronoun | TENER | VENIR |
|---|---|---|
| Yo | tengo | vengo |
| Tú | tienes | vienes |
| Ud., él, ella | tiene | viene |
| Nosotros/as | tenemos | venimos |
| Vosotros/as | tenéis | venís |
| Uds., ellos, ellas | tienen | vienen |
The irregularity of the verbs occurs in two areas.
- The “yo” form is completely irregular, with a ‘g’ added before the –o ending.
- The stem of the verbs changes in the tú, Ud., and Uds. forms. The “e” is replaced by “ie”.
Try saying the word tene. Now say tiene. Can you hear why the stem changes?
Por ejemplo (for example):
Practice Your Pronunciation With Rocket Record
Using TENER to Talk about Age, What You Have, Whether You’re Hungry, and What You Feel Like Doing.
The verb “tener” is extremely common in Spanish. A mastery of it will enable you to say everything from how old you are to whether you’re cold or thirsty.
In its most basic meaning, tener means “to have.” For example, “Tengo un trabajo,” means I have a job. If you want to say that you have to do something, you will use tener que. For example, “Tengo que ir al mercado,” means I have to go to the market.
Tener is also used in the colloquial phrase, “I feel like…” If you want to say you feel like doing something, start your sentence with, “Tengo ganas de…”
Por ejemplo:

Tener can also mean the same thing as the English “to be” in many situations.
For example, if you feel hot, cold, hungry, or thirsty, you will use tener to express your state. “Tengo calor,” means I am [feeling] hot.
When you want to express how many years old someone is, you can say, “Ella tiene 17 años.” In other words, She is 17 years old.
You will also use tener in some expressions, like “tener cuidado,” or to be careful.
Por ejemplo:

Check out more Spanish Verbs for useful info! Here are some recommended lessons:
See you soon! ¡Hasta pronto!
Mauricio Evlampieff: Rocket Spanish