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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
knew about this problem
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "knew about this problem" is correct and usable in written English.
You can use it when referring to someone's prior awareness or knowledge of a specific issue or situation. Example: "She knew about this problem long before it became a major concern for the team."
✓ Grammatically correct
News & Media
Academia
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
7 human-written examples
I said: "You knew about this problem but didn't tell me I could have prevented it.
News & Media
"We also realized pretty early that there was something sick with NASA, that they were covering up, that they knew about this problem from the second flight, that they didn't want news of it to get out".
News & Media
"I knew about this problem for a couple of years before I actually did anything about it," Pardon said, recalling how he scrolled through various math problems online in preparation for a national science competition as a rising senior in high school.
Academia
"I said to Sun, 'My God, you knew about this problem, and you didn't tell me?
News & Media
Homejoy knew about this problem and was trying to find a way to fix it.
News & Media
Right, so the main allegation is that Microsoft knew about this problem before the console's launch in November, 2005 but deemed that it would be too expensive to fix.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
53 human-written examples
In this talk I will summarize what is known about tis problem and will provide some constructions as well as some open problems towards its resolution.
They don't know about this problem.
News & Media
"Defence has known about this problem since 2000.
News & Media
"It's a travesty that the industry has known about this problem," he said.
News & Media
And I think, it's not true, because the financial community knows about this problem and ejects such people.
Academia
Expert writing Tips
Best practice
Use "knew about this problem" when emphasizing that someone had prior awareness of a specific issue, especially when discussing responsibility or accountability.
Common error
Don't use "knew about this problem" without clearly defining what the problem is. Otherwise, your audience might get confused. Instead, provide context or briefly describe the issue.
Source & Trust
86%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "knew about this problem" functions as a statement indicating someone's prior awareness or knowledge of a specific issue. Ludwig AI confirms its usability in written English. It often appears to assign responsibility or highlight negligence.
Frequent in
News & Media
67%
Academia
33%
Science
0%
Less common in
Formal & Business
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
The phrase "knew about this problem" is grammatically sound and used to convey that someone had prior knowledge of a particular issue. Ludwig AI confirms its validity and common usage. While predominantly found in "News & Media" and "Academia", it maintains a neutral to formal tone. When using this phrase, it's crucial to clearly define what "this problem" refers to. For more formal contexts, alternatives such as "was aware of the issue" or "had knowledge of this matter" can be considered.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
was aware of the issue
Focuses on general awareness rather than specific knowledge of a "problem".
had knowledge of this matter
Uses more formal language to denote prior awareness.
possessed prior information regarding this
Emphasizes the possession of information before a certain point.
was informed about the situation
Indicates being told about the situation, rather than discovering it independently.
understood the predicament
Highlights comprehension of a difficult situation.
recognized the challenge
Focuses on identifying a difficulty or obstacle.
was cognizant of the difficulty
Uses formal language for being aware of a difficulty.
perceived the trouble
Implies noticing or detecting a problem.
anticipated the complication
Suggests foreseeing a problematic development.
had foresight of the issue
Emphasizes the ability to predict a problem before it arises.
FAQs
How can I rephrase "knew about this problem" to sound more formal?
For a more formal tone, consider alternatives like "was aware of the issue" or "had knowledge of this matter". These options convey a similar meaning but are suited for professional or academic settings.
Is it grammatically correct to say "knew about this problem"?
Yes, the phrase "knew about this problem" is grammatically correct and commonly used. It follows standard English sentence structure and is widely understood.
What's the difference between "knew about this problem" and "suspected this problem"?
"Knew about this problem" implies certainty and confirmed knowledge, whereas "suspected this problem" suggests a belief or hunch without concrete evidence. The former indicates awareness, while the latter indicates speculation.
In what contexts is "knew about this problem" most appropriate?
This phrase is particularly fitting when discussing situations where someone had prior awareness of an issue, especially when addressing responsibility, accountability, or potential negligence. It's common in news reports, academic analyses, and formal discussions.
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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
86%
Authority and reliability
4.1/5
Expert rating
Real-world application tested