1
certify that + clause
certify that 后接从句，表示正式证明某事属实。
The accountant certified that the financial statements were accurate.
会计师证明财务报表是准确的。
证明；证实
先理解核心含义，再看它在真实句子里的用法。
证明；证实
to declare that something is true, especially formally
The accountant certified that the financial statements were accurate.
会计师证明财务报表是准确的。
证明(事实)属实
To attest to (a fact) as the truth.
书面证明,书面认证
To authenticate or verify in writing.
证明(产品、服务、组织或个人)符合官方标准
To attest that a product, service, organization, or person has met an official standard.
certify
Base
原形
certifies
3rd person
第三人称单数
certifying
-ing
现在分词
certified
Past
过去式
certified
Past participle
过去分词
The auditor certifies the financial statements.
审计员证明财务报表无误。
He certified the check before mailing it.
他在邮寄之前把支票保付了。
The laboratory has certified the product's safety.
实验室已经认证了该产品的安全性。
规则动词，注意 y 变 i 加 es 和 ed。
The accountant certified the check before it was deposited.
会计师在支票存入前对其进行了认证。
The laboratory certified the water as safe to drink.
实验室证明该水可以安全饮用。
The doctor certified him as legally insane.
医生证明他法律上精神失常。
certify that 后接从句，表示正式证明某事属实。
The accountant certified that the financial statements were accurate.
会计师证明财务报表是准确的。
certify...as... 表示认证某物符合某种标准。
The laboratory certified the product as safe for human use.
实验室认证该产品对人类使用是安全的。
certify sb + adj. 常用于法律或医学语境，宣布某人处于某种状态。
The doctor certified him insane and unfit for trial.
医生证明他精神失常，不适合受审。
Not this
Please certificate the document.
Use this
Please certify the document.
学生可能混淆动词 'certify' 和名词 'certificate'，错误地用名词作动词。正确应为 'certify'。
Not this
He certified for the accuracy of the report.
Use this
He certified that the report was accurate.
'certify' 后接 that 从句，不接介词 'for'。需使用 'certify that + 从句' 结构。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
核证文件；证明文件属实
A notary certified the document.
公证人核证了这份文件。
证明……；作证……
The doctor certified that the patient was fit for work.
医生证明这名病人可以工作了。
认证符合标准；证明合规
An independent agency certified the factory's compliance with safety regulations.
一家独立机构认证该工厂符合安全法规。
认证某人为……；发给某人……资格
The institute certifies engineers as professional project managers.
该协会认证工程师为专业项目经理。
开死亡证明；证实死亡
The coroner certified her death as accidental.
验尸官证实她是意外死亡。
审核证明账目
The auditors certified the company's accounts.
审计员对公司的账目作了审核证明。
认证的骚货，一周七天不停歇
From Cardi B and Megan Thee Stallion's 2020 hit 'WAP,' the line uses 'certified' to mean officially recognized, boasting about being sexually uninhibited all the time.
出自Cardi B和Megan Thee Stallion 2020年的热单《WAP》，这句歌词中的‘certified’意为‘官方认证的’，炫耀自己时刻放纵性欲。
认证情圣
Drake's 2021 album 'Certified Lover Boy' created this phrase, which became a meme. The word 'certified' indicates that the 'lover boy' title is officially confirmed.
Drake的2021年专辑《Certified Lover Boy》创造了这个短语，后来成为网络迷因。‘certified’一词表示‘情圣’的头衔是官方确认的。
Use certify naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
certify 里有 certificate（证书），把它想成给事实盖上一枚‘证书印章’，证明属实、达标。
语域：formal 常见场景：legal documents、official certification、professional accreditation certify 多用于正式语境，强调书面或官方的证明、认证；日常口语中很少单独使用，比较常出现在法律、行政、专业资质或产品合规等场景。
None of these words is a true rhyme with certify (/ˈsɜːrtɪfaɪ/): they all end in -ify /ɪfaɪ/, but their stressed vowels differ (e.g., /e/, /ɒ/, /æ/). Use them only as spelling lookalikes, not rhymes.
Dictionary facts from ECDICT, WIKTIONARY.