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

-cer and -cir Spanish verbs undergo changes in El Presente de Subjuntivo in Spanish

Learn about -cer and -cir Spanish verbs in El Presente de Subjuntivo in Spanish

In Spanish, the  -c- changes to a -zc- in El Presente in Spanish just for the yo form for many verbs that end in -cer/-cir that are preceded by a vowel. These verbs keep the same irregularity in El Presente de Subjuntivo but in this conjugation the irregularity is kept in all forms.

Two common verbs that undergo this change are conocer (to know/meet) and producir (to produce).

Conjugating conocer in El Presente de Subjuntivo in Spanish 

  -CER

CONOCER
(to meet/know)

yo

conozca

conozcas

él / ella / usted

conozca

nosotros/nosotras

conozcamos

vosotros/vosotras

conozcáis

ellos/ellas/ustedes

conozcan

Conjugating procucir in El Presente de Subjuntivo in Spanish 

 -CIR

PRODUCIR
(to produce)

yo

produzca

produzcas

él /ella/usted

produzca

nosotros/nosotras

produzcamos

vosotros/vosotras

produzcáis

ellos/ellas/ustedes

produzcan

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

Here are some examples:

No creo que conozcas a Luis.I don't think you've met Luis. [you=tú]

Espero que produzcamos vino de calidad.I hope we produce good quality wine

Dice que introduzcáis la tarjeta en la máquina.It's saying that you must insert the card in the machine. [you=vosotros]

Laura no me permite que yo conduzca rápido.Laura doesn't let me drive fast.

Me gusta que ahora amanezca más temprano.I like that the sun dawns earlier now.

Es increible que se parezcan tanto.It is incredible that they look alike so much.

Quiero que conozcan a mi prometida.I want you to meet my fiancé. [you=ustedes]

Note that commonly-used verbs hacer (to do/make) and decir (to say) do not have this type of irregularity!

Other -cer and -cir verbs have a different consonant change.

See also:

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Examples and resources

Espero que produzcamos vino de calidad.I hope we produce good quality wine
Quiero que conozcan a mi prometida.I want you to meet my fiancé. [you=ustedes]
Me gusta que ahora amanezca más temprano.I like that the sun dawns earlier now.
Es increible que se parezcan tanto.It is incredible that they look alike so much.
Dice que introduzcáis la tarjeta en la máquina.It's saying that you must insert the card in the machine. [you=vosotros]
Laura no me permite que yo conduzca rápido.Laura doesn't let me drive fast.
No creo que conozcas a Luis.I don't think you've met Luis. [you=tú]
Let me take a look at that...