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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
I warn that
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "I warn that" is correct and usable in written English.
It can be used when you want to alert someone about a potential danger or issue that they should be aware of. Example: "I warn that ignoring safety protocols can lead to serious consequences."
✓ Grammatically correct
News & Media
Wiki
Science
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
3 human-written examples
Robertson laughs when I warn that I'll be shouting out Jimmy Gordon's quote to divert him at match point.
News & Media
I warn that I did not consider microscopic ones.
I warn that no matter how careful you are, sometimes doing anything to modify your controller can ruin it.
Wiki
Human-verified similar examples from authoritative sources
Similar Expressions
56 human-written examples
Two months ago I warned that Somalia's fragile food security situation was likely to worsen in the coming months.
Formal & Business
"Last year I warned that we risk a decade of destitution.
News & Media
Nowhere was I warned that I may need a special code (lasting just 72 hours) from the DVLA.
News & Media
About a week ago, I warned that the politics of Ebola could turn into a nightmare.
News & Media
When I warned that it could not abolish the trade cycle, I was told I was wrong.
News & Media
That's why I warned that this was going to happen unless we acted - I wanted to prevent the crisis.
News & Media
I warned that judge and made a lot of it because I thought he was a threat.
News & Media
In January 2011, I warned that anti-Muslim sentiment had "passed the dinner-table test" and become socially acceptable.
News & Media
Expert writing Tips
Best practice
Use "I warn that" to clearly and directly express a potential negative consequence or danger.
Common error
Avoid using "I warn that" in casual conversations; opt for more natural phrases like "just so you know" or "heads up" to maintain a friendly tone.
Source & Trust
83%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "I warn that" functions as a declarative statement used to introduce a warning or caution. Ludwig AI validates this usage. It sets the stage for an alert, signaling the speaker's intention to highlight a potential negative outcome or danger.
Frequent in
News & Media
50%
Wiki
25%
Science
25%
Less common in
Formal & Business
0%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "I warn that" is a grammatically correct phrase used to explicitly introduce a warning about a potential negative outcome. While Ludwig AI confirms its correctness, its frequency is uncommon, primarily appearing in news and media, as well as scientific contexts. For more informal settings, consider alternative expressions like "be aware that" or "just so you know". When employing this phrase, ensure it fits the gravity and formality of the situation at hand to maintain an effective and appropriate tone.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
I caution that
Replaces "warn" with a slightly more formal synonym, "caution".
I advise that
Substitutes "warn" with "advise", suggesting a recommendation against something.
Be warned that
Changes the sentence structure to a passive form, emphasizing the warning itself.
Let me warn you that
Adds a conversational element, explicitly indicating the intention to warn.
I must warn you that
Emphasizes the speaker's obligation or strong feeling about the warning.
It should be noted that
Presents the warning as an important piece of information.
Keep in mind that
Highlights the need to remember something, often a potential problem.
Bear in mind that
Similar to "keep in mind", urging consideration of a particular fact.
I'm telling you that
More colloquial and direct, conveying a strong sense of certainty and warning.
Please be aware that
A polite way to introduce a warning or potential issue.
FAQs
How can I use "I warn that" in a sentence?
Use "I warn that" to introduce a statement about a potential danger or negative outcome. For instance, "I warn that ignoring safety protocols can lead to serious accidents."
What's a more formal alternative to "I warn that"?
For a more formal tone, consider using phrases like "I caution that" or "it should be noted that", which convey a similar meaning with increased formality.
Is "I warn that" always appropriate to use?
While grammatically correct, "I warn that" can sound severe. In less formal settings, consider using alternatives like "be aware that" or "just so you know" for a softer approach.
What's the difference between "I warn that" and "I advise that"?
"I warn that" typically implies a potential danger or negative consequence, while "I advise that" suggests a recommendation or suggestion based on experience or knowledge.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
83%
Authority and reliability
4.1/5
Expert rating
Real-world application tested