The present indicative tense has a lot of irregular verb conjugations. It is easiest to learn once you understand that there is generally a pattern to the irregularities.
Verbs that are irregular in the yo form only.
caber (to fit) → quepo, cabes, cabe, cabemos, cabéis, caben
caer (to fall) → caigo, caes, cae, caemos, caéis, caen
conocer (to know) → conozco, conoces, conoce, conocemos, conocéis, conocen
There are a bunch of verbs that are like conocer. The irregularity is that you need to add a z just before the last c.
| aborrecer (to hate) | desconocer (be be ignorant of) | ofrecer (to offer) |
| agradecer (to thank) | establecer (to establish) | parecer (to seem) |
| aparecer (to appear) | estremecerse (to shudder) | permanecer (to remain) |
| carecer (to lack) | merecer (to deserve) | pertenecer (to belong) |
| crecer (to grow) | nacer (to be born) | reconocer (to recognize |
| desaparecer (to disappear) | obedecer (to obey) | traducir (to translate) |
dar (to give) → doy, das, da, damos, dais, dan
hacer (to do, to make) → hago, haces, hace, hacemos, hacéis, hacen
poner (to put, to place) → pongo, pones, pone, ponemos, ponéis, ponen
saber (to know) → sé, sabes, sabe, sabemos, sabéis, saben
salir (to go out, to leave) → salgo, sales, sale, salimos, salís, salen
traer (to bring) → traigo, traes, trae, traemos, traéis, traen
valer (to be worth) → valgo, vales, vale, velemos, valéis, valen
ver (to see, to watch) → veo, ves, ve, vemos, veis, ven
While there are more irregular verbs in Spanish, they tend to be compound verbs that contain the previous irregular verbs as a base.
deshacer, imponer, componer, atraer etc.
As you learn new verbs, look for a possible root verb that you may already know.
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