Used and loved by millions
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
that are often
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "that are often" is correct and usable in written English.
It can be used to describe something that frequently occurs or is commonly found in a particular context. Example: "There are many species of birds that are often seen in this region during the spring."
✓ Grammatically correct
Science
News & Media
Academia
Alternative expressions(5)
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
Fashionable names that are often bandied about were passed over.
News & Media
They result in penalties that are often disproportionately harsh".
News & Media
This success story has two angles that are often overlooked.
Science
The flowers have five petals that are often fused.
Encyclopedias
Immigrants are being deported to countries that are often unsafe.
News & Media
I never developed flu or the cold sores that are often early symptoms, but I did experience intermittent night sweats that are often typical.
News & Media
Ni-WC composite are ideal protective coatings against wear that are often fabricated using laser cladding.
We offer flexible contingency fees that are often less than that of competing firms.
Academia
Batchen writes with great clarity and pedagogic patience about ideas that are often judged difficult.
So that's my list of the distinct concepts that are often confused with functional specificity.
MOORE: There are four fundamental assumptions that are often unknown or unrecognized by many people.
Academia
Expert writing Tips
Best practice
Use "that are often" to introduce a characteristic or quality that is commonly associated with a subject. This helps to establish familiarity and common understanding with the reader.
Common error
Avoid using "that are often" excessively in long, convoluted sentences. It can create redundancy and make the writing cumbersome. Consider simplifying the sentence structure or using a more concise alternative.
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "that are often" functions as a relative clause introducing a characteristic or attribute commonly associated with a noun. It adds descriptive detail and specifies the frequency or typicality of a particular feature or occurrence. Ludwig confirms its correct and frequent usage.
Frequent in
Science
43%
Academia
35%
News & Media
18%
Less common in
Encyclopedias
2%
Formal & Business
1%
Reference
1%
Ludwig's WRAP-UP
In summary, the phrase "that are often" is a versatile and grammatically sound relative clause used to describe common or frequent attributes. Ludwig AI confirms its correctness and common usage across various domains. It’s most prevalent in scientific and academic writing but also appears frequently in news and media. While it's important to avoid overuse, understanding its function and purpose can enhance clarity and familiarity in your writing. Consider alternatives like "that frequently occur" or "that typically arise" to diversify your sentence structure.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
that frequently occur
Replaces "are often" with "frequently occur", emphasizing the regularity of occurrence.
that commonly appear
Substitutes "are often" with "commonly appear", focusing on the typical presence of something.
that regularly happen
Replaces "are often" with "regularly happen", highlighting the consistent nature of the event.
that generally exist
Changes "are often" to "generally exist", indicating widespread existence or prevalence.
that typically arise
Replaces "are often" with "typically arise", emphasizing the usual way something comes about.
that usually result
Substitutes "are often" with "usually result", focusing on the common outcome or consequence.
that tend to be
Changes "are often" to "tend to be", indicating a common inclination or tendency.
that have a habit of
Replaces "are often" with "have a habit of", suggesting a repeated behavior or characteristic.
that will normally
Substitutes "are often" with "will normally", focusing on the normal expectation or course of events.
that repeatedly show up
Replaces "are often" with "repeatedly show up", highlighting the recurring presence of something.
FAQs
How can I use "that are often" in a sentence?
The phrase "that are often" introduces a clause describing something common or frequent. For instance, "The problems "that are often" encountered during the experiment can be avoided with careful planning."
What phrases are similar to "that are often"?
Alternatives include "that frequently occur", "that commonly appear", or "that typically arise". The best choice depends on the specific nuance you want to convey.
Is there a difference between "that are often" and "that are usually"?
"That are often" suggests something happens frequently, while "that are usually" implies something is the norm or typical case. The former focuses on frequency; the latter on what is expected.
When is it best to avoid using "that are often"?
While grammatically correct, excessive use of "that are often" can make writing sound repetitive. Try varying your phrasing with synonyms like "that tend to" or "that regularly happen" for a more engaging style.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested