No idea 对比 Not sure

在英语中何时使用每一个，包含含义、语域和例句。

No idea

非正式前 2000（常见）

Not sure

	No idea	Not sure
发音	🇬🇧 //nəʊ aɪˈdɪə//🇺🇸 //noʊ aɪˈdiə//
含义	我不知道或不明白I don't know or understand
例句	I have no idea where my keys are.	-
语域	非正式	-
常见程度	前 2000（常见）	-
搭配	have no idea, give no idea, no idea what's going on	-
反义	have a clue, know, be certain, understand	-
常见错误	Using it in a formal context where a more serious phrase is needed., Confusing it with 'no clue', which has a similar meaning.	-
用法说明	在不知道某事的情况下，用于随意聊天。避免在正式场合使用。Use in casual conversations when you have no knowledge of something. Avoid in formal situations.	-