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

Quando usar cada um em inglês, com significado, registro e exemplos.

I don't think so

Top 2000 (comum)

Not that I know of

Top 5000 (bastante comum)
Mais comum: I don't think so
 I don't think soNot that I know of
Pronúncia🇬🇧 //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.
ExemploDo you think we should cancel the trip?Is there a new project starting next month? Not that I know of.
RegistroNeutroNeutro
Quão comumTop 2000 (comum)Top 5000 (bastante comum)
ColocaçõesI 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
AntônimosI think so, Yes, Definitely-
Erros comunsUsing 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.

Perguntas frequentes: I don't think so vs Not that I know of

Qual é a diferença entre I don't think so e 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.

Qual é mais comum: I don't think so e Not that I know of?

I don't think so é a mais comum no inglês do dia a dia.

Pode mostrar um exemplo de cada?

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.

Posso usar I don't think so e Not that I know of de forma intercambiável?

Nem sempre. I don't think so e Not that I know of são relacionadas e às vezes se sobrepõem, mas diferem em registro, frequência e uso, então trocar uma pela outra pode mudar o sentido ou o tom. Veja as diferenças acima antes de substituir.

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