I don't think so vs Not that I know of

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

I don't think so

Top 2000 (común)

Not that I know of

Top 5000 (bastante común)
Más común: I don't think so
 I don't think soNot that I know of
Pronunciación🇬🇧 //aɪ dəʊnt θɪŋk səʊ//🇺🇸 //aɪ doʊnt θɪŋk soʊ//🇬🇧 //nɒt ðæt aɪ nəʊ ɒv//🇺🇸 //nɑt ðæt aɪ noʊ ʌv//
SignificadoI disagree with that idea.I don't have that information.
EjemploDo you think we should cancel the trip?Is there a new project starting next month? Not that I know of.
RegistroNeutralNeutral
Qué tan comúnTop 2000 (común)Top 5000 (bastante común)
ColocacionesI don’t think so, I don’t believe so, I don’t feel that waynot that I know of, as far as I know, to my knowledge
AntónimosI think so, Yes, Definitely-
Errores comunesUsing it too aggressively in a polite conversation., Confusing it with 'I think not' which is more formal., Forgetting to tone down the response in sensitive discussions.Using it in a context where certainty is required., Confusing it with 'not to my knowledge' as it feels less formal., Neglecting to use it when unsure if something is true.
Notas de usoUse this phrase in discussions to express your disagreement. It's neutral and can fit various contexts, but avoid in very formal settings.Use this phrase when responding to questions about information you are uncertain about. It’s polite and straightforward, suitable for both formal and casual contexts.

Preguntas frecuentes: I don't think so vs Not that I know of

¿Cuál es la diferencia entre I don't think so y Not that I know of?

I don't think so: I disagree with that idea. Not that I know of: I don't have that information.

¿Cuál es más común: I don't think so y Not that I know of?

I don't think so es la más común en el inglés cotidiano.

¿Puedes mostrar un ejemplo de cada una?

I don't think so: Do you think we should cancel the trip? Not that I know of: Is there a new project starting next month? Not that I know of.

¿Puedo usar I don't think so y Not that I know of indistintamente?

No siempre. I don't think so y Not that I know of 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.

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