Word · CEFR A2 · Frequency #540
certainly
肯定；一定；无疑
definitely; without doubt
- 1.
In a way which is certain; with certainty.
确定地；肯定地。
- 2.
definitely or positively (`sure' is sometimes used informally for `surely')
肯定地,确定地('sure'有时在非正式场合用作'surely')
- 3.
Without doubt, surely.
无疑；必定。
- 4.
An emphatic affirmative answer; of course.
强调的肯定回答；当然。
当然；好；确定地；肯定地。；肯定地,确定地('sure'有时在非正式场合用作'surely')；无疑；必定。；强调的肯定回答；当然。
In use
She will certainly win the competition if she keeps practicing.
I certainly appreciate your help with this project.
The movie was certainly better than I expected.
she certainly is a hard worker
certainly + verb
用于加强动词的肯定语气。
I certainly agree with your point.
我当然同意你的观点。
certainly + adjective
用于加强形容词的肯定程度。
The results are certainly impressive.
结果当然令人印象深刻。
Certainly at the start of a sentence
用于句首，表示强调同意或允许。
Connections
Collocations
- certainly not
- 肯定不
- I will certainly not give up.我肯定不会放弃。
- certainly will
- 肯定会
- She certainly will come to the party.她肯定会来参加聚会。
- certainly can
- 当然可以
- You certainly can count on my help.你当然可以指望我的帮助。
- almost certainly
- 几乎肯定
- He almost certainly knows the answer.他几乎肯定知道答案。
- most certainly
- 绝对肯定
- This is most certainly the best option.这绝对是最好的选择。
- certainly does
- 确实
Learner notes
Memory Tip
certainly 含 certain（确定），联想‘确定地’，无疑地。
Context & Register
语域：neutral 常见场景：日常对话、书面语、正式场合 ‘certainly’ 是一个常见的副词，语域中性，既可用于日常对话也可用于正式书面语，无显著风格限制。
Grammar Note
通常表示肯定语气，可位于句首或句中
Pronunciation & Spelling
All listed words end with -ly (/li/), but the preceding stressed vowel differs (e.g., /ɜː/ in certainly vs. /ʊə/ in surely, /eɪ/ in mainly, etc.). They are useful for spelling pattern but not true rhymes.
High-value vocabulary
该词属于 Oxford 核心词汇，值得优先掌握常见搭配和句型。
Usage priority
Collins 词频等级为 4，建议结合例句记忆，而不是只背中文释义。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.