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Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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has ascertained

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "has ascertained" is correct and usable in written English.
You can use it when indicating that someone has determined or discovered something with certainty. Example: "The investigator has ascertained the cause of the accident after thorough analysis."

✓ Grammatically correct

Science

News & Media

Human-verified examples from authoritative sources

Exact Expressions

17 human-written examples

But the hitters who will bat behind him are much less potent -- as Manager Bob Brenly has ascertained.

And as everyone from Mary J Blige to Olivia Newton-John has ascertained, this is the best love of all.

Once she has ascertained that our waitress and her family are enjoying good health, Brooke orders a sandwich and I order a salad, and I put an inevitable question: What was Vincent Astor really like?

News & Media

The New Yorker

Once it has ascertained that the reducer meets all the hardware and availability requirements, the server replies with a reduce task that fits the request.

I'm not sure what everyone expected Jobs to be working on, but the Wall Street Journal, ever vigilant, has ascertained that he is "pouring almost all of his attention into" the tablet.

News & Media

TechCrunch

Thus, for example, one ascertains P on the basis of good reasons Q, R, etc., whose characteristics one has ascertained earlier.

Science

SEP
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Human-verified similar examples from authoritative sources

Similar Expressions

43 human-written examples

Once we have ascertained all the facts, we will act accordingly".

News & Media

The New York Times

But with 10 worms, we've ascertained a dose that does not cause symptoms.

News & Media

The New York Times

New Zealand, researchers have ascertained, spent NZ$172 million on legal aid in the year 2009/10.

News & Media

The Guardian

From what we've ascertained from her fourth and latest album, The One, Ntjam Rosie is a woman in love.

On the train home I sat opposite a woman who, having ascertained what I was doing in Cornwall, told me that she too had eaten at Nathan Outlaw.

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Expert writing Tips

Best practice

Use "has ascertained" to convey a sense of thoroughness and certainty in the process of finding something out. It's suitable for formal writing where precision is important.

Common error

Avoid using "has ascertained" in casual conversations or informal writing. Simpler alternatives like "found out" or "learned" may be more appropriate.

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

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

80%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Linguistic Context

The primary grammatical function of "has ascertained" is as a verb phrase in the present perfect tense. It indicates an action (ascertaining) that was completed at some point in the past and has relevance to the present. Ludwig provides numerous examples demonstrating its use in various contexts.

Expression frequency: Common

Frequent in

Science

41%

News & Media

41%

Encyclopedias

6%

Less common in

Wiki

6%

Formal & Business

6%

Social Media

0%

Ludwig's WRAP-UP

In summary, the phrase "has ascertained" is a grammatically correct and frequently employed verb phrase that indicates the certain discovery or determination of something. Ludwig AI underscores its validity, confirming that it's appropriate for diverse writing styles. Its usage is especially prevalent in scientific and news contexts, lending a sense of formality and precision. While "has ascertained" is widely recognized, writers should consider the context to ensure the phrase aligns with the intended level of formality, opting for simpler alternatives such as ""has determined"" or ""has confirmed"" when a less formal tone is desired.

FAQs

How to use "has ascertained" in a sentence?

Use "has ascertained" to indicate that someone has determined or discovered something with certainty after a thorough investigation. For example, "The detective "has ascertained" the suspect's motive."

What can I say instead of "has ascertained"?

You can use alternatives like "has determined", "has established", or "has confirmed" depending on the context.

Which is correct, "has ascertained" or "ascertained"?

"Has ascertained" is a present perfect construction, indicating a completed action with current relevance. "Ascertained" is past simple. The choice depends on the intended meaning and tense of your sentence.

What's the difference between "has ascertained" and "has assumed"?

"Has ascertained" implies a thorough investigation leading to a certain conclusion, while "has assumed" suggests a belief taken for granted without proof.

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Source & Trust

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Authority and reliability

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Real-world application tested

Most frequent sentences: