has ascertained that

USAGE SUMMARY

The phrase 'has ascertained that' is correct and can be used in written English.
This phrase is used to indicate that something has been confirmed or verified through investigation or research. For example: The professor has ascertained that the previous theories about the origin of the species were incorrect.

✓ Grammatically correct

Science

News & Media

Formal & Business

Human-verified examples from authoritative sources

Exact Expressions

6 human-written examples

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?

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.

Journal of Internet Services and Applications

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.

TechCrunch

Classroom research has ascertained that students can experience a great improvement in their vocabulary growth if they are given exposure to meaningful input even with the absence of direct instruction (Lightbrown & Spada, 2006).

Procedia - Social and Behavioral Sciences

An assessment performed among developing countries has ascertained that, in thirty-six of them, the proportion of overweight and obese women was higher than that of recommended weight among women, especially on urban population [ 8].

BMC Pregnancy and Childbirth

Research has ascertained that lower income populations as well as rural residents often have difficulty accessing oral health care, and frequently bear significant travel burdens to access these services.

BMC Public Health

Human-verified similar examples from authoritative sources

Similar Expressions

53 human-written examples

Contrary to traditional approaches, where total stresses are assumed to remain constant, recent studies have ascertained that total stresses in fact change in every direction as fluid extraction/injection disturbs the pore-pressure field and causes deformations.

Journal of Petroleum Science and Engineering

In a database table, the column reporting this answer would start out with a value of null, and it would not be updated with "zero" until we have ascertained that Juan owns no books.

Wikipedia

Researchers have ascertained that partnerships which use third party interface show a higher contribution to TB case detection [ 41].

Health Research Policy and Systems

Israel was careful to emphasize that it had ascertained that there was no Turkish or Egyptian involvement in the incident.

The New York Times

The synod said it had ascertained that Metropolitan Volodymyr was definitely too ill to carry out his duties.

The Economist

Expert writing Tips

Best practice

Use "has ascertained that" when you want to emphasize that a conclusion was reached after careful investigation or gathering of evidence. It adds a tone of authority and thoroughness to your writing.

Common error

Avoid using "has ascertained that" in casual conversation or informal writing. It can sound overly formal or pretentious in contexts where simpler language would be more appropriate.

Linguistic Context

The phrase "has ascertained that" functions as a reporting verb phrase. It introduces a statement or finding that has been established through careful investigation or verification. Ludwig examples demonstrate its usage across diverse contexts, supporting its role in conveying confirmed information.

Expression frequency: Uncommon

Frequent in

Science

42%

News & Media

33%

Wiki

8%

Less common in

Encyclopedias

0%

Formal & Business

0%

Reference

0%

Ludwig's WRAP-UP

The phrase "has ascertained that" is a grammatically correct expression used to introduce a fact or conclusion established through investigation. According to Ludwig, while it appears less frequently than other similar phrases, it maintains a presence across science, news media, and wiki sources. Its formality makes it best suited for formal writing, research papers, and professional reports. Remember, while correct, simpler alternatives may be more appropriate in informal contexts.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

has confirmed that

Replaces 'ascertained' with 'confirmed', indicating a verification rather than a discovery.

has verified that

Substitutes 'ascertained' with 'verified', suggesting a more rigorous check for accuracy.

has determined that

Uses 'determined' instead of 'ascertained', implying a conclusion reached after investigation.

has established that

Replaces 'ascertained' with 'established', emphasizing the creation of a firm basis or proof.

has found that

Substitutes 'ascertained' with 'found', indicating a discovery made during a search or investigation.

has discovered that

Uses 'discovered' instead of 'ascertained', focusing on the act of uncovering something previously unknown.

has learned that

Replaces 'ascertained' with 'learned', suggesting the acquisition of knowledge through experience or study.

has understood that

Substitutes 'ascertained' with 'understood', implying a comprehension of something previously unclear.

has concluded that

Uses 'concluded' instead of 'ascertained', emphasizing a final judgment or decision based on evidence.

has realized that

Replaces 'ascertained' with 'realized', indicating a sudden awareness or understanding.

FAQs

How can I use "has ascertained that" in a sentence?

You can use "has ascertained that" to introduce a fact or conclusion that has been established through investigation, as in "The research team "has ascertained that" the new drug is effective".

What are some alternatives to "has ascertained that"?

Alternatives include "has confirmed that", "has verified that", or "has determined that", depending on the specific nuance you want to convey.

When is it appropriate to use "has ascertained that"?

It is appropriate to use "has ascertained that" in formal writing, such as research papers, reports, or legal documents, where you need to convey a sense of authority and thoroughness.

Is "has ascertained that" too formal for casual writing?

Yes, "has ascertained that" is generally too formal for casual writing. In informal contexts, simpler alternatives like "has found that" or "has learned that" are more appropriate.