Irregular conditional stems (tendría, haría...)

When discussing wilderness survival, you will rely heavily on the conditional tense to talk about what you would do. Normally, this tense is formed by attaching endings directly to the infinitive (like compraría).

A few common verbs have irregular stems in the conditional. The endings themselves (-ía, -ías, -ía, -íamos, -íais, -ían) never change. You just attach them to these new stems.

The irregular stems

Here are the ten most common irregular conditional stems, which group into recognizable patterns.

InfinitiveIrregular StemExample (yo / él / ella / usted)
hacerhar-haría
decirdir-diría
tenertendr-tendría
ponerpondr-pondría
salirsaldr-saldría
venirvendr-vendría
poderpodr-podría
sabersabr-sabría
quererquerr-querría
haberhabr-habría

Shortened stems

Some verbs drop letters from their infinitive to form a shorter stem, like hacer (har-) and decir (dir-).

The boy would make a shelter with branches.
El niño haría un refugio con ramas.
The doctor would say that survival is the most important thing.
La médica diría que la supervivencia es lo más importante.

The "D" stems

For tener, poner, salir, and venir, the vowel from the infinitive ending is replaced with a d.

For survival, you would always have water.
Para la supervivencia, usted siempre tendría agua.
I would put a pocket knife in the backpack before leaving.
Yo pondría una navaja en la mochila antes de salir.
Would you leave the shelter without water?
¿Saldría usted del refugio sin agua?
With good weather, the rescue would come in the morning.
Con buen tiempo, el rescate vendría por la mañana.

The dropped vowel stems

The verbs poder, saber, querer, and haber drop the e from their infinitive ending. For querer, this results in a double r (querr-).

The rescue group could follow our trail.
El grupo de rescate podría seguir nuestro rastro.
Without the compass, how would you know how to orient yourself?
Sin la brújula, ¿cómo sabría usted orientarse?
My sister would not want to go down that ravine.
Mi hermana no querría bajar por ese barranco.

A special note on "haber"

Just as hay means "there is" or "there are," the verb haber is used in its singular conditional form (habría) to say "there would be."

there to be (existential)
haber
After the storm, there would be a rescue.
Después de la tormenta, habría un rescate.