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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
one challenge is
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "one challenge is" is correct and usable in written English. You can use it when introducing a specific difficulty or obstacle in a discussion. For example, "One challenge is managing time effectively." Alternative expressions include "a difficulty is" and "one issue is."
✓ Grammatically correct
Science
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
60 human-written examples
One challenge is the disruptive nature of AM and its impact on all life cycle phases.
Science
One challenge is funding.
News & Media
One challenge is literacy.
News & Media
One challenge is to preserve foreign aid.
News & Media
One challenge is to remain energy efficient.
News & Media
One challenge is free agency.
News & Media
One challenge is to shift perceptions.
News & Media
One challenge is establishing contact-contact correspondence between time steps.
Academia
One challenge is how to define punishable behavior.
News & Media
One challenge is the size of farms and flocks today.
News & Media
One challenge is that abortion is primarily a women's issue.
News & Media
Expert writing Tips
Best practice
When using "one challenge is", ensure it clearly introduces a specific, well-defined obstacle or difficulty. Provide context and explain why it's a challenge.
Common error
Avoid stating "one challenge is" without clearly specifying the challenge. Ensure the challenge is directly linked to the topic at hand and not left ambiguous or undefined.
Source & Trust
90%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "one challenge is" functions as a subject complement, linking the subject (the implied situation or context) to a noun phrase that identifies a specific problem or difficulty. Ludwig AI provides examples where this phrase introduces a variety of challenges across diverse fields.
Frequent in
Science
30%
News & Media
30%
Academia
20%
Less common in
Formal & Business
10%
Reference
5%
Social Media
5%
Ludwig's WRAP-UP
In summary, "one challenge is" is a grammatically sound and frequently used phrase to introduce a specific difficulty or obstacle. As Ludwig AI confirms, its versatility allows it to be used across various contexts, including science, news, academia, and business. While the phrase is generally neutral in register, it's important to clearly define the challenge being presented to avoid ambiguity. Using alternatives like "a key issue is" or "a major obstacle is" can also help to enhance writing and prevent repetition.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
a key issue is
This uses "issue" instead of "challenge" and slightly rephrases the introductory words.
a major obstacle is
This replaces "challenge" with "obstacle" emphasizing the hindering aspect.
a significant difficulty is
This substitutes "challenge" with "difficulty" and "one" with "significant" to amplify impact.
a primary concern is
This shifts the focus to "concern" highlighting the worrying aspect of the issue.
the main problem is
Replaces "challenge" with "problem" to specify a hindrance.
the biggest hurdle is
This utilizes "hurdle" instead of "challenge" to portray the difficulty as something to overcome.
the chief impediment is
Uses "impediment" which is more formal than "challenge", making it suitable for formal settings.
a tough task is
This replaces "challenge" with "task", framing it as an activity needing to be done.
something difficult is
This utilizes a slightly different sentence structure focusing on the difficulty of something.
it is challenging to
This uses a different grammatical structure emphasizing the action of challenging.
FAQs
How can I use "one challenge is" in a sentence?
Use "one challenge is" to introduce a specific difficulty or obstacle. For example, "One challenge is "managing time effectively" when working from home".
What are some alternatives to saying "one challenge is"?
You can use alternatives like "a key issue is", "a major obstacle is", or "a significant difficulty is" depending on the context and the specific nuance you want to convey.
Is it ever incorrect to start a sentence with "one challenge is"?
While grammatically correct, starting multiple consecutive sentences with "one challenge is" can become repetitive. Vary your sentence structure by using alternatives like "a difficulty is" or "an obstacle is" to improve readability.
What is the difference between "one challenge is" and "the challenge is"?
"One challenge is" implies there are multiple challenges, and you are highlighting one specific difficulty. "The challenge is" suggests there is a single, primary challenge.
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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
90%
Authority and reliability
4.5/5
Expert rating
Real-world application tested