Cannot vs Impossible vs Unable

Cuándo usar cada una en inglés, con significado, registro y ejemplos.

Cannot

Top 1000 (muy común)A1

Impossible

Top 1000 (muy común)A2

Unable

Top 2000 (común)B1adjective
 CannotImpossibleUnable
Pronunciación🇬🇧 /["/ˈkænɒt/"]/🇺🇸 /["/ˈkænɑːt/"]/🇬🇧 /["/ɪmˈpɒsəbl/"]/🇺🇸 /["/ɪmˈpɑːsəbl/"]/🇬🇧 /["/ʌnˈeɪbl/"]/🇺🇸 /["/ʌnˈeɪbl/"]/
Significadoto be unable to do somethingNot able to happen or be done.not able to do something
EjemploI cannot believe the price of the tickets!Climbing that mountain seems impossible without proper training.I was unable to attend the meeting due to a family emergency.
RegistroNeutralNeutralNeutral
Qué tan comúnTop 1000 (muy común)Top 1000 (muy común)Top 2000 (común)
Nivel CEFRA1A2B1
Categoría gramaticaladjective
Colocacionescannot believe, cannot wait, cannot affordappear, be, look, absolutely, completely, downright, for, be, become, find somebody, really, absolutely, completelyappear, be, feel, completely, quite, totally, unwilling or unable
Antónimoscan, ablepossible, feasible, achievableable, capable
Errores comunesConfused with 'can not' — it's always one word in negative form., Using 'cannot' in too formal a context — prefer 'can't' in casual speech., Incorrectly using 'cannot' in past tense situations.'Impossible' is sometimes confused with 'unbelievable' but they are not the same., Learners might use 'impossible' to describe very challenging tasks instead of things that cannot be done at all., 'Impossible' is often incorrectly combined with less strong modifiers, like 'very impossible'.Confused with 'unable to' and 'not able to' — they mean the same but usage can vary., Using 'unable' without a following action verb., Misplacing adjectives — remember 'unable' always describes capability.
Notas de usoUse 'cannot' in any situation where something is impossible. Avoid using it in informal contexts where 'can't' is more common.Use 'impossible' to describe something that cannot be achieved. It’s suitable for both spoken and written English but may be too strong in polite contexts.Use 'unable' in situations where someone or something lacks the ability to perform an action. It's appropriate in both spoken and written contexts, but avoid in very casual conversations.

Míralo en clips reales

Impossible

Preguntas frecuentes: Cannot vs Impossible vs Unable

¿Cuál es la diferencia entre Cannot, Impossible y Unable?

Cannot: to be unable to do something Impossible: Not able to happen or be done. Unable: not able to do something

¿Cuál es más avanzada: Cannot, Impossible y Unable?

Unable es la de nivel más alto, en B1, en la escala CEFR.

¿Cannot, Impossible y Unable tienen el mismo nivel CEFR?

Cannot: A1, Impossible: A2, Unable: B1 en la escala CEFR.

¿Puedes mostrar un ejemplo de cada una?

Cannot: I cannot believe the price of the tickets! Impossible: Climbing that mountain seems impossible without proper training. Unable: I was unable to attend the meeting due to a family emergency.

¿Puedo usar Cannot, Impossible y Unable indistintamente?

No siempre. Cannot, Impossible y Unable están relacionadas y a veces se solapan, pero difieren en registro, frecuencia y uso, así que cambiar una por otra puede alterar el significado o el tono. Revisa las diferencias de arriba antes de sustituir.