I don't know против I have no idea против I'm not sure

Когда что использовать в английском, со значением, регистром и примерами.

I don't know

Топ 1000 (очень частое)

I have no idea

НеформальноеТоп 2000 (частое)

I'm not sure

Частотный чанк
 I don't knowI have no ideaI'm not sure
Произношение🇬🇧 //aɪ dəʊnt nəʊ//🇺🇸 //aɪ doʊnt noʊ//🇬🇧 //aɪ hæv nəʊ ɪˈdɪə//🇺🇸 //aɪ hæv noʊ ɪˈdiə//🇬🇧 //aɪm nɒt ʃʊə//🇺🇸 //aɪm nɑt ʃʊr//
ЗначениеЯ не уверен.I am not sure.I don't know anything about it.I don't know if it's true or not.
ПримерWhat 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.
РегистрНейтральноеНеформальноеНейтральное
Насколько частоеТоп 1000 (очень частое)Топ 2000 (частое)Частотный чанк
СочетанияI don't know what, I don't know why, I don't know howhave no idea about, have no idea where, have no idea howI'm not sure about that, I'm not sure if, I'm not sure what to do
АнтонимыI know, I am sure, I understandI know exactly, I am sure, I have a clear understanding-
Частые ошибкиUsing 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.
Заметки по употреблениюИспользуйте в разговорах, когда не уверены в ответе. Избегайте в официальных ситуациях, где ожидается ответ.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.

Посмотри в реальных клипах

I don't know
I have no idea
I'm not sure

Частые вопросы: I don't know против I have no idea против I'm not sure

В чём разница между I don't know, I have no idea и 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.

Можно показать пример каждого?

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.

Можно ли использовать I don't know, I have no idea и I'm not sure взаимозаменяемо?

Не всегда. I don't know, I have no idea и I'm not sure близки и иногда пересекаются, но различаются по регистру, частоте и употреблению, поэтому замена одного другим может изменить смысл или тон. Стоит свериться с различиями выше, прежде чем заменять.