Verbo know en inglés: conjugación completa
Diego De La Croix
Profesor bilingüe francés-español
El verbo inglés to know significa «saber/conocer» en español. Es un verbo irregular, lo que significa que sus formas de pasado simple y participio pasado no siguen la regla estándar de añadir -ed y deben memorizarse. A diferencia del español, el inglés distingue entre know (saber/conocer) sin necesidad de dos verbos. Se usa con how to para habilidades: I know how to swim = «Sé nadar».
Conjugación de know en indicativo
Present simple (presente simple)
| Persona | Conjugación |
|---|---|
| I | know |
| you | know |
| he/she/it | knows |
| we | know |
| they | know |
Present continuous (presente continuo)
| Persona | Conjugación |
|---|---|
| I | am knowing |
| you | are knowing |
| he/she/it | is knowing |
| we | are knowing |
| they | are knowing |
Present perfect (pretérito perfecto)
| Persona | Conjugación |
|---|---|
| I | have known |
| you | have known |
| he/she/it | has known |
| we | have known |
| they | have known |
Past simple (pasado simple)
| Persona | Conjugación |
|---|---|
| I | knew |
| you | knew |
| he/she/it | knew |
| we | knew |
| they | knew |
Past continuous (pasado continuo)
| Persona | Conjugación |
|---|---|
| I | was knowing |
| you | were knowing |
| he/she/it | was knowing |
| we | were knowing |
| they | were knowing |
Past perfect (pluscuamperfecto)
| Persona | Conjugación |
|---|---|
| I | had known |
| you | had known |
| he/she/it | had known |
| we | had known |
| they | had known |
Future simple (futuro simple)
| Persona | Conjugación |
|---|---|
| I | will know |
| you | will know |
| he/she/it | will know |
| we | will know |
| they | will know |
Future perfect (futuro perfecto)
| Persona | Conjugación |
|---|---|
| I | will have known |
| you | will have known |
| he/she/it | will have known |
| we | will have known |
| they | will have known |
Conjugación de know en condicional
Present (presente)
| Persona | Conjugación |
|---|---|
| I | would know |
| you | would know |
| he/she/it | would know |
| we | would know |
| they | would know |
Past (pasado)
| Persona | Conjugación |
|---|---|
| I | would have known |
| you | would have known |
| he/she/it | would have known |
| we | would have known |
| they | would have known |
Conjugación de know en imperativo
Conjugación de know en participio
Present (presente)
| Persona | Conjugación |
|---|---|
| - | knowing |
Past (pasado)
| Persona | Conjugación |
|---|---|
| - | known |
Ejemplos
I know the answer.
Sé la respuesta.
She knows how to cook.
Ella sabe cocinar.
I didn't know that.
No sabía eso.
Do you know him?
¿Lo conoces?
I have known her for years.
La conozco desde hace años.
You never know.
Nunca se sabe.
As far as I know...
Hasta donde yo sé...
She knows a lot about history.
Ella sabe mucho de historia.
Let me know if you need help.
Dime si necesitas ayuda.
I knew it!
¡Lo sabía!
Expresiones
know the ropes
conocer los trucos / saber cómo funciona
know something like the back of your hand
conocer algo como la palma de la mano
you never know
nunca se sabe
Errores frecuentes
Olvidar la -s de la tercera persona: He know en vez de He knows
Correcto: He/She/It knows
En el present simple, la tercera persona del singular (he/she/it) siempre añade -s o -es al verbo. Es el error más frecuente entre hispanohablantes.
Regularizar el pasado: knowed en vez de knew
Correcto: Past simple: knew — Past participle: known
«know» es irregular: sus formas de pasado no siguen la regla estándar de añadir -ed. Deben aprenderse de memoria.
Formar preguntas sin do/does: You know? en vez de Do you know?
Correcto: Do you know? / Does he/she know?
En español, la pregunta se forma con la entonación. En inglés, el present simple y past simple necesitan el auxiliar do/does/did para preguntas y negaciones.
Confundir present simple con present continuous: I know vs I am knowing
Correcto: Hábito/general → I know | Ahora mismo → I am knowing
El present simple se usa para hábitos y verdades generales, mientras que el present continuous se usa para acciones en progreso. En español a menudo se usa el mismo tiempo para ambos.
Sinónimos
Antónimos
Comparación inglés / español
| Aspecto | Inglés | Español |
|---|---|---|
| Present simple | I know | yo sé |
| Present simple (3rd person) | he/she knows | él/ella sabe |
| Present continuous | I am knowing | yo estoy sabiendo |
| Past simple | I knew | yo supe |
| Present perfect | I have known | yo he sabido |
| Future simple | I will know | yo sabré |
| Negative | I don't know | yo no sé |
| Question | Do you know? | ¿tú sabes? |