I don't know vs I have no idea vs I'm not sure
Quando usar cada um em inglês, com significado, registro e exemplos.
I don't know
Top 1000 (muito comum)
I have no idea
InformalTop 2000 (comum)
I'm not sure
Bloco de alta frequência
| I don't know | I have no idea | I'm not sure | |
|---|---|---|---|
| Pronúncia | 🇬🇧 //aɪ dəʊnt nəʊ//🇺🇸 //aɪ doʊnt noʊ// | 🇬🇧 //aɪ hæv nəʊ ɪˈdɪə//🇺🇸 //aɪ hæv noʊ ɪˈdiə// | 🇬🇧 //aɪm nɒt ʃʊə//🇺🇸 //aɪm nɑt ʃʊr// |
| Significado | Não tenho certeza.I am not sure. | I don't know anything about it. | I don't know if it's true or not. |
| Exemplo | What time is the meeting? I don't know. | Where's the nearest coffee shop? I have no idea. | I'm not sure if it will rain tomorrow. |
| Registro | Neutro | Informal | Neutro |
| Quão comum | Top 1000 (muito comum) | Top 2000 (comum) | Bloco de alta frequência |
| Colocações | I don't know what, I don't know why, I don't know how | have no idea about, have no idea where, have no idea how | I'm not sure about that, I'm not sure if, I'm not sure what to do |
| Antônimos | I know, I am sure, I understand | I know exactly, I am sure, I have a clear understanding | - |
| Erros comuns | Using it too formally in professional settings., Saying 'I not know' instead of 'I don't know'., Confusing it with 'I don't know how'. | Saying it too formally in a business meeting., Using it when a little knowledge is required., Translating it directly into another language without context. | Using it too formally in writing., Confusing it with 'I'm not certain' - which is slightly more formal., Overusing it in situations that require decisiveness. |
| Notas de uso | Use em conversas quando não tiver certeza de uma resposta. Evite em situações formais onde se espera uma resposta.Use in conversations when unsure about an answer. Avoid in formal situations where providing a response is expected. | Use this phrase in casual conversations to express lack of knowledge. Avoid in formal situations. | Used when expressing doubt about something. Common in conversations but less formal in writing. |
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Perguntas frequentes: I don't know vs I have no idea vs I'm not sure
Qual é a diferença entre I don't know, I have no idea e I'm not sure?
I don't know: I am not sure. I have no idea: I don't know anything about it. I'm not sure: I don't know if it's true or not.
Pode mostrar um exemplo de cada?
I don't know: What time is the meeting? I don't know. I have no idea: Where's the nearest coffee shop? I have no idea. I'm not sure: I'm not sure if it will rain tomorrow.
Posso usar I don't know, I have no idea e I'm not sure de forma intercambiável?
Nem sempre. I don't know, I have no idea e I'm not sure 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.