Conjugate c>z -cer/-cir verbs in El Presente de Subjuntivo (present subjunctive)

In El Presente, many verbs that end in -cer/-cir preceded by a consonant have a stem change in just the yo form: -c- changes to -z-. However, in El Presente de Subjuntivo, these verbs have this same irregularity in all forms.

Have a look at these two verbs conjugations in El Presente de Subjuntivo:

 Consonant+CER verb 

CONVENCER
(to convince)

yo

convenza

convenzas

él/ella/usted

convenza

nosotros/nosotras

convenzamos

vosotros/vosotras

convenzáis

ellos/ellas/ustedes

convenzan

 

 Consonant+CIR verb 

ESPARCIR
(to scatter / 
spread out)

yo

esparza

esparzas

él/ella/usted

esparza

nosotros/nosotras

esparzamos

vosotros/vosotras

esparzáis

ellos/ellas/ustedes

esparzan

The endings are the same as for all regular -er and -ir verbs in El Presente de Subjuntivo.

Here are some examples:

Yo no creo que le convenza porque es muy cabezota.
I don't think I'll convince him because he is very stubborn.

Ella quiere que tú esparzas las cenizas en el mar.
She wants you to scatter the ashes in the sea.

Dudo que Lara convenza a su padre para salir.
I doubt Lara will convince her father to go out.

Esparzamos los papeles por el suelo para verlos mejor.
Let's spread the papers out on the floor to see them better.

Espero que convenzáis a vuestras amigas para venir a la fiesta.
I hope you convince your friends to come to the party.

Queremos que esparzan pétalos de rosa sobre nuestra cama.
We want them to scatter rose petals over our bed.

Note that there aren't many common verbs with this irregularity. Other -cer and -cir verbs have a different consonant change.

See also Conjugate c>zc verbs -cer/-cir in El presente de Subjuntivo (present subjunctive).

Examples and resources

Dudo que Lara convenza a su padre para salir.
I doubt Lara will convince her father to go out.


Ella quiere que tú esparzas las cenizas en el mar.
She wants you to scatter the ashes in the sea.


Queremos que esparzan pétalos de rosa sobre nuestra cama.
We want them to scatter rose petals over our bed.


Yo no creo que le convenza porque es muy cabezota.
I don't think I'll convince him because he is very stubborn.


Espero que convenzáis a vuestras amigas para venir a la fiesta.
I hope you convince your friends to come to the party.


Esparzamos los papeles por el suelo para verlos mejor.
Let's spread the papers out on the floor to see them better.


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