Cool MateNo doubt about it 对比 Undoubtedly
在英语中何时使用每一个，包含含义、语域和例句。
No doubt about it
10000 以上（较少见）
Undoubtedly
正式前 5000（相当常见）C1adverb
最正式: Undoubtedly最常见: Undoubtedly
| No doubt about it | Undoubtedly | |
|---|---|---|
| 发音 | 🇬🇧 //nəʊ daʊt əˈbaʊt ɪt//🇺🇸 //noʊ daʊt əˈbaʊt ɪt// | 🇬🇧 //ʌnˈdaʊtɪdli//🇺🇸 //ʌnˈdaʊtədli// |
| 含义 | It is certain. | Definitely; without a doubt. |
| 例句 | She is, no doubt about it, the best candidate for the job. | She is undoubtedly the best candidate for the position. |
| 语域 | 中性 | 正式 |
| 常见程度 | 10000 以上（较少见） | 前 5000（相当常见） |
| CEFR 等级 | - | C1 |
| 词性 | adverb | |
| 搭配 | have no doubt about it, leave no doubt about it, there's no doubt about it | undoubtedly true, undoubtedly clear, undoubtedly helpful |
| 反义 | - | doubtfully, questionably, uncertainly |
| 常见错误 | Using in overly formal contexts where simpler affirmatives are better., Confusing with phrases like 'no question about it' which can imply more uncertainty., Mispronouncing and rushing, making it sound unclear. | Confused with 'undoubtably', which is incorrect., Omitting it when certainty is implied., Using it in informal contexts where 'definitely' is more suitable. |
| 用法说明 | This phrase is often used in informal conversation to express certainty. It's suitable for most contexts but can be avoided in very formal writing. | Used to emphasize certainty or strong belief; typically in formal writing or speeches, not common in casual conversation. |
在真实片段中看它
常见问题：No doubt about it 对比 Undoubtedly
No doubt about it和Undoubtedly 有什么区别？
No doubt about it: It is certain. Undoubtedly: Definitely; without a doubt.
哪个更正式：No doubt about it和Undoubtedly？
Undoubtedly 是其中最正式的。
哪个更常见：No doubt about it和Undoubtedly？
Undoubtedly 在日常英语中最常见。
能各给一个例子吗？
No doubt about it: She is, no doubt about it, the best candidate for the job. Undoubtedly: She is undoubtedly the best candidate for the position.
我可以互换使用 No doubt about it和Undoubtedly 吗？
不总是。No doubt about it和Undoubtedly 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。