I don't know what to do против I have no idea

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

I don't know what to do

Топ 2000 (частое)

I have no idea

НеформальноеТоп 2000 (частое)
Самое формальное: I don't know what to do
 I don't know what to doI have no idea
Произношение🇬🇧 //aɪ dəʊnt nəʊ wɒt tə duː//🇺🇸 //aɪ doʊnt noʊ wɑːt tə du//🇬🇧 //aɪ hæv nəʊ ɪˈdɪə//🇺🇸 //aɪ hæv noʊ ɪˈdiə//
ЗначениеI am unsure about what actions to take.I don't know anything about it.
ПримерAfter hearing the news, I just said, 'I don't know what to do.'Where's the nearest coffee shop? I have no idea.
РегистрНейтральноеНеформальное
Насколько частоеТоп 2000 (частое)Топ 2000 (частое)
Сочетанияask for help, feel lost, make a decision, find a solution, seek advicehave no idea about, have no idea where, have no idea how
Антонимы-I know exactly, I am sure, I have a clear understanding
Частые ошибкиOmitting 'what' and saying 'I don't know to do.', Mixing up with 'I don't know how to do.', Using 'what to do' in statements instead of questions.Saying it too formally in a business meeting., Using it when a little knowledge is required., Translating it directly into another language without context.
Заметки по употреблениюUse this phrase when expressing uncertainty or lack of direction. Appropriate in both casual and formal settings.Use this phrase in casual conversations to express lack of knowledge. Avoid in formal situations.

Посмотри в реальных клипах

I don't know what to do
I have no idea

Частые вопросы: I don't know what to do против I have no idea

В чём разница между I don't know what to do и I have no idea?

I don't know what to do: I am unsure about what actions to take. I have no idea: I don't know anything about it.

Что формальнее: I don't know what to do и I have no idea?

Среди них I don't know what to do самое формальное.

Можно показать пример каждого?

I don't know what to do: After hearing the news, I just said, 'I don't know what to do.' I have no idea: Where's the nearest coffee shop? I have no idea.

Можно ли использовать I don't know what to do и I have no idea взаимозаменяемо?

Не всегда. I don't know what to do и I have no idea 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.