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Justyna Jupowicz-Kozak quote

Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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I certify

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "I certify" is correct and usable in written English.
You can use it when you want to formally declare or confirm the truth or authenticity of something, often in legal or official contexts. Example: "I certify that the information provided in this document is accurate to the best of my knowledge."

✓ Grammatically correct

News & Media

Science

Wiki

Formal & Business

Human-verified examples from authoritative sources

Exact Expressions

25 human-written examples

I have no stake in the sale of the business, nor do I certify that any of the information about the business presented is accurate.

News & Media

The New York Times

As with my earlier posts on businesses for sale, I have no stake in the sale of the business, nor do I certify that any of the information about the business presented is accurate.

News & Media

The New York Times

"I certify a class of all persons and business entities who have accepted Visa and-or MasterCard credit cards and therefore have been required to accept VisaCheck and-or MasterMoney debit cards," Judge Gleeson stated in his opinion.

News & Media

The New York Times

"Your daughter has not signed her name, and the counter-signature on the back of the photograph says 'I certify that this is a true likeness of' but does not say who it is a true likeness of".

Before submitting a review, users must check a box stating, "I certify that this review is based on my own experience and is my genuine opinion of this community, and that I have no business relationship with this community and have not been offered any incentive from this community to write this review.

News & Media

The New York Times

Judge Martin Beddoe said: "I certify the benefit to be £32,352,027 and given what I have been told about the issue of Mr Levene's bankruptcy and that the trustee in bankruptcy is confident and has got hold of such assets as were in the possession of Mr Levene in consequence of this offending, it seems to me entirely pragmatic that his assets are seized by the trustee in bankruptcy.

News & Media

Independent
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Human-verified similar examples from authoritative sources

Similar Expressions

31 human-written examples

But Warrenville was in the town of Ashford, for which I had no guide, and I remember the blissful sense of resolution I felt when I certified that Route 44A crossed Route 89 in the town center, for I had long hypothesized that they might meet there.

News & Media

The New Yorker

Once the programs are run and the results sent back to the Trust, an "InChI Certified" logo is sent to the appropriate person or organization.

I certified Martha Stewart's yard as a National Wildlife Federation Certified Wildlife Habitatt".

News & Media

Huffington Post

During dinner I certified the beautiful ladies one by one to the tune of great applause and many tears from us all.

News & Media

Huffington Post

Sample language could include, "I hereby certify that I have served a copy of this document on [insert name of other party] either by person or by mailing it postage prepaid on [insert the date]."[6].

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Expert writing Tips

Best practice

When using "I certify" in formal documents, clearly specify what you are certifying and the scope of your certification to avoid ambiguity. Example: "I certify that this review is based on my own experience."

Common error

Avoid using "I certify" in casual conversations or informal writing. It sounds overly formal and can be replaced with simpler phrases like "I confirm" or "I can assure you" for a more natural tone.

Antonio Rotolo, PhD - Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

How to use

Learn how to use "I certify" with practical examples and tips.

How to use

Linguistic Context

The phrase "I certify" serves as a performative utterance, where the act of saying it constitutes the act of certifying. According to Ludwig, this phrase is used to formally declare the truth or validity of a statement or document. It often appears in contexts requiring a formal assurance.

Expression frequency: Common

Frequent in

News & Media

32%

Science

29%

Wiki

18%

Less common in

Formal & Business

14%

Reference

5%

Social Media

2%

Ludwig's WRAP-UP

In summary, the phrase "I certify" is a formal declaration used to affirm the truth or accuracy of something. Ludwig's analysis reveals that this phrase is commonly used in News & Media, Science, and Wiki contexts, highlighting its versatility across different fields. While grammatically correct and widely accepted, it's important to reserve it for formal situations where a strong assurance is required. Alternatives like "I attest" or "I declare" can be used for similar effect, but "I certify" carries a unique weight of authority. Based on Ludwig AI insights, remember to be specific in your certification and avoid overuse in informal settings.

FAQs

How to use "I certify" in a sentence?

Use "I certify" to formally declare the truth or accuracy of something. For example, "I certify that the information provided is accurate" or "I certify this to be a true likeness of the applicant".

What can I say instead of "I certify"?

You can use alternatives like "I attest", "I warrant", or "I declare" depending on the context.

When is it appropriate to use "I certify"?

It's best to use "I certify" in formal settings such as legal documents, official statements, or academic papers. It adds a level of formality and seriousness to your declaration.

Which is correct, "I certify" or "I certified"?

"I certify" is used to make a current declaration. "I certified" is used to refer to a past action. For example: "I certify that the document is correct" versus "I certified the document yesterday".

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How to use

Learn how to use "I certify" with practical examples and tips.

How to use

Most frequent sentences: