Undoubtedly 对比 Without a doubt

在英语中何时使用每一个，包含含义、语域和例句。

Undoubtedly

正式前 5000（相当常见）C1adverb

Without a doubt

前 2000（常见）

最正式: Undoubtedly最常见: Without a doubt

	Undoubtedly	Without a doubt
发音	🇬🇧 //ʌnˈdaʊtɪdli//🇺🇸 //ʌnˈdaʊtədli//	🇬🇧 //wɪˈðaʊt ə daʊt//🇺🇸 //wɪˈðaʊt ə daʊt//
含义	肯定；毫无疑问。Definitely; without a doubt.	Definitely true; no question about it.
例句	She is undoubtedly the best candidate for the position.	She is, without a doubt, the most talented singer in the group.
语域	正式	中性
常见程度	前 5000（相当常见）	前 2000（常见）
CEFR 等级	C1	-
词性	adverb
搭配	undoubtedly true, undoubtedly clear, undoubtedly helpful	believe without a doubt, know without a doubt, say without a doubt
反义	doubtfully, questionably, uncertainly	-
常见错误	Confused with 'undoubtably', which is incorrect., Omitting it when certainty is implied., Using it in informal contexts where 'definitely' is more suitable.	Used with incorrect verb forms (e.g., 'Without a doubt, he is the best.' should be 'Without a doubt, he is the best choice.'), Often confused with similar phrases like 'without question,' which can have a slightly different tone.
用法说明	用于强调确定性或强烈信念；通常在正式写作或演讲中使用，在日常对话中不常见。Used to emphasize certainty or strong belief; typically in formal writing or speeches, not common in casual conversation.	Used to express strong certainty. Suitable for both spoken and written forms. Avoid in overly formal contexts.

在真实片段中看它

Undoubtedly和Without a doubt 有什么区别？

Undoubtedly: Definitely; without a doubt. Without a doubt: Definitely true; no question about it.

哪个更正式：Undoubtedly和Without a doubt？

Undoubtedly 是其中最正式的。

哪个更常见：Undoubtedly和Without a doubt？

Without a doubt 在日常英语中最常见。

能各给一个例子吗？

Undoubtedly: She is undoubtedly the best candidate for the position. Without a doubt: She is, without a doubt, the most talented singer in the group.

我可以互换使用 Undoubtedly和Without a doubt 吗？

不总是。Undoubtedly和Without a doubt 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。