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Justyna Jupowicz-Kozak quote

Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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a certain of

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "a certain of" is not correct and not usable in written English.
It seems to be a misconstruction, as it typically should be "a certain number of" or "a certain type of." Example: "There are a certain number of factors to consider in this decision."

⚠ May contain grammatical issues

Science

News & Media

Human-verified examples from authoritative sources

Exact Expressions

10 human-written examples

After all, the Giants, especially their starters, had performed with a certain of precision.

An innovative design of micro-electromagnetic drive module is proposed to make a Π-type thin disc reciprocally and efficiently rotate within a certain of angular interval.

The sensitivity of the model predictions involving four parameters indicates that ew and φ have weak influence on the correctly prediction of core-annulus flow, while the model remains a certain of sensitivity to es and Cs.

They produce a list dominated by a certain of type of institution.

News & Media

BBC

It is in the process of moving to a subscription model where customers pay a fixed rate up to a certain of number of translated words.

News & Media

TechCrunch

I know that there's a certain of percentage of people who want nothing to do with Modern Warfare 2. It's all meatheads and explosions, right?

News & Media

TechCrunch
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Human-verified similar examples from authoritative sources

Similar Expressions

50 human-written examples

They're meant to connote certain types of programming, a certain method of production, a certain type of consumption.

News & Media

Los Angeles Times

Of a certain type of actor.

That's a savings of a certain amount of dollars!

News & Media

TechCrunch

The volume of CaCl2 solution required to remove a certain % of Cd decreased with increasing concentration of CaC12.

A certain type of author.

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Expert writing Tips

Best practice

Avoid using the phrase "a certain of" in your writing. It's grammatically incorrect. Instead, opt for alternatives like "a certain amount of", "a certain number of", or "a certain type of" depending on the context to ensure clarity and correctness.

Common error

Many writers mistakenly use "a certain of" when they intend to express a quantity or type. Always include a noun after "certain" to complete the phrase correctly. For example, use "a certain amount of" for uncountable nouns and "a certain number of" for countable nouns.

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

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

85%

Authority and reliability

2.8/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "a certain of" functions as a determiner intended to specify a quantity or type, but it is grammatically incomplete. Ludwig AI flags it as incorrect, suggesting it needs to be followed by a noun phrase like "amount of", "number of", or "type of" to be grammatically sound.

Expression frequency: Uncommon

Frequent in

Science

40%

News & Media

40%

Formal & Business

0%

Less common in

Encyclopedias

0%

Wiki

0%

Reference

0%

Ludwig's WRAP-UP

In summary, the phrase "a certain of" is grammatically incorrect and should be avoided in formal writing. Ludwig AI highlights this issue, suggesting the use of more appropriate alternatives such as "a certain amount of", "a certain number of", or "a certain type of". While the phrase appears across various contexts, its incorrect usage undermines its effectiveness and clarity. Always ensure that "certain" is followed by a noun phrase to maintain grammatical correctness and precision in your writing.

FAQs

What phrases can I use instead of "a certain of"?

You can use alternatives like "a certain amount of", "a certain number of", or "a certain type of" depending on the context.

Is the phrase "a certain of" grammatically correct?

No, the phrase "a certain of" is not grammatically correct. It is generally considered a misuse, and it should be avoided in formal writing.

How do I choose between "a certain amount of" and "a certain number of"?

"A certain amount of" is used with uncountable nouns (e.g., water, money), while "a certain number of" is used with countable nouns (e.g., books, people).

What is the difference between "a certain" and "a particular"?

"Certain" and "particular" are often interchangeable, but "particular" emphasizes a specific instance more strongly. For example, "a particular kind of" suggests a more precise selection than "a certain kind of".

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Source & Trust

85%

Authority and reliability

2.8/5

Expert rating

Real-world application tested

Most frequent sentences: