I don't know 对比 I'm not sure

在英语中何时使用每一个，包含含义、语域和例句。

I don't know

前 1000（非常常见）

I'm not sure

高频组块

	I don't know	I'm not sure
发音	🇬🇧 //aɪ dəʊnt nəʊ//🇺🇸 //aɪ doʊnt noʊ//	🇬🇧 //aɪm nɒt ʃʊə//🇺🇸 //aɪm nɑt ʃʊr//
含义	我不确定。I am not sure.	I don't know if it's true or not.
例句	What time is the meeting? I don't know.	I'm not sure if it will rain tomorrow.
语域	中性	中性
常见程度	前 1000（非常常见）	高频组块
搭配	I don't know what, I don't know why, I don't know how	I'm not sure about that, I'm not sure if, I'm not sure what to do
反义	I know, I am sure, I understand	-
常见错误	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'.	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.
用法说明	在不确定答案时可以在对话中使用。避免在需要提供回答的正式场合使用。Use in conversations when unsure about an answer. Avoid in formal situations where providing a response is expected.	Used when expressing doubt about something. Common in conversations but less formal in writing.

在真实片段中看它

常见问题：I don't know 对比 I'm not sure

I don't know和I'm not sure 有什么区别？

I don't know: I am not sure. I'm not sure: I don't know if it's true or not.

能各给一个例子吗？

I don't know: What time is the meeting? I don't know. I'm not sure: I'm not sure if it will rain tomorrow.

我可以互换使用 I don't know和I'm not sure 吗？

不总是。I don't know和I'm not sure 相关，有时可以互换，但在语域、常见程度和用法上不同，所以换用可能改变意思或语气。替换前先看看上面的区别。

相关对比

I don't know 对比 I have no idea