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Justyna Jupowicz-Kozak quote

Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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he warns that

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "he warns that" is correct and usable in written English.
It can be used when someone is giving a caution or alerting others about a potential danger or issue. Example: "In his latest report, he warns that climate change could have devastating effects on global agriculture."

✓ Grammatically correct

News & Media

Academia

Science

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

But he warns that is no guarantee it will ever be made.

News & Media

BBC

But he warns that things will get harder.

News & Media

The Economist

But he warns that it will be costly.

Science & Research

Nature

But he warns that Lygo's mission is a hard one.

He warns that additional state funding cuts will force the campus to revisit its plans.

In his book, he warns that cornstarch does not thicken well with very acidic fruits.

He warns that a UK exit from the EU is more likely than most people realise.

News & Media

Independent

He warns that theatres cannot rely on celebrity events to capture audiences.

News & Media

The Economist

He warns that aerial surveys, the usual way of counting big fauna, are often inaccurate.

News & Media

The Economist

But he warns that the bills cover very rare situations and could be overused.

News & Media

The New York Times

He warns that free accounts will disappear as banks move customers into expensive package deals.

News & Media

Independent
Show more...

Expert writing Tips

Best practice

When using "he warns that", ensure the warning is followed by a clear and specific explanation of the potential negative consequences to give the warning more weight and credibility.

Common error

Avoid consistently using passive constructions like "it is warned that" as this can weaken the impact of the warning. Instead, attribute the warning directly to a person or source using "he warns that" to maintain clarity and forcefulness.

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

4.5/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "he warns that" functions as a reporting clause that introduces a warning or cautionary statement. It attributes the warning to a specific individual, making the warning more credible or authoritative. As shown by Ludwig AI, this construction is commonly found in news and academic contexts.

Expression frequency: Common

Frequent in

News & Media

60%

Academia

20%

Science

20%

Less common in

Formal & Business

0%

Encyclopedias

0%

Wiki

0%

Ludwig's WRAP-UP

In summary, "he warns that" is a phrase used to introduce a cautionary statement, attributing it to a specific individual. Ludwig AI confirms its grammatical correctness and common usage, particularly in news, academic, and scientific contexts. While synonyms exist, the choice depends on the nuance and formality desired. When using this phrase, ensure the warning is clear, specific, and supported by evidence to maximize its impact.

FAQs

How can I use "he warns that" in a sentence?

Use "he warns that" to introduce a statement of caution or potential danger from a specific individual. For example, "The doctor "he warns that" excessive sugar intake can lead to serious health problems".

What are some alternatives to "he warns that"?

You can use alternatives such as "he cautions that", "he advises that", or "he points out that" depending on the context and the level of formality you want to convey. Each alternative slightly alters the tone and emphasis of the warning.

Is it correct to say "he warns of" instead of "he warns that"?

While "he warns of" is grammatically correct, it requires a noun or gerund phrase following "of". For instance, "He warns of potential budget cuts." "He warns that" is followed by a clause, providing more detail. Both are valid, but the sentence structure differs.

What's the difference between "he warns that" and "he suggests that"?

"He warns that" implies a potential danger or negative consequence, while "he suggests that" offers a recommendation or piece of advice. The former is a caution, whereas the latter is a proposal. For instance, "He warns that the bridge is unstable", versus "He suggests that we take an alternative route".

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Source & Trust

85%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Most frequent sentences: