Topic:
Verbs whose stem ends in -c generally add a "z" in the Yo form, which then ends with -zco.
The "Conozco" forms
Almost all verbs whose stem ends with -c have a special change in the present tense Yo form.
The easiest of these verbs to remember is conocer , which means to know, when referring to people or places.
In the Yo form, this becomes the rather charming conozco , with a "z" added before the "c".
An Example of the Spice in Spanish
It may seem silly but I really enjoy these particular verb forms. They contribute something special to the sound of the language, and they are just fun to pronounce.
Present Tense Conjugation of conocer
For good measure, here's one more... ofrecer which means to offer.
Present Tense Conjugation of ofrecer
Very Few Exceptions
I said almost all verbs whose stem ends with -c behave this way, and you have already studied the main exceptions, decir and hacer.
As we saw earlier, those two verbs are quite irregular.
Also, if a verb stem has a consonant before the final -c, the Yo form becomes just -zo instead of -zco.
Not many verbs have a consonant in that spot. One that does is ejercer (to exercise), where the Yo form becomes just ejerzo.
All Yo -zco Forms in the Exercises
You can treat these exercises almost as a practice time for regular conjugation. Just remember that the Yo forms need an extra z.