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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
topic which has
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "topic which has" is correct and usable in written English.
It can be used when referring to a specific subject or theme that possesses certain characteristics or qualities. Example: "The topic which has garnered the most interest in recent discussions is climate change."
✓ Grammatically correct
Science
News & Media
Alternative expressions(1)
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
42 human-written examples
"I don't think I have ever come across a topic which has attracted more adult antagonism," he says.
News & Media
There is one topic which has a high profile for yes campaigners and repeatedly cited by Alex Salmond as a burning topic, notable for its absence in the Hunter poll: Trident.
News & Media
Sharapova, who has perhaps borne the brunt of more criticism for grunting than anyone since Monica Seles, said she didn't think the men speaking up about grunting would change the debate significantly, a topic which has never been her favorite.
News & Media
Sustainability is a universal topic which has multidimensional effect on the environment and human life.
This programme might therefore have threat effects, a topic which has not yet been investigated.
Science
Climate-conscious development is a topic which has received widespread attention.
Human-verified similar examples from authoritative sources
Similar Expressions
18 human-written examples
That said, the report itself acknowledges that there have been other recent studies on this very topic which have reached the same conclusion.
News & Media
They have already devoted thirteen hearings, twenty-five thofsandocumentsf documents, and fifty briefings to the topic, which have turned up nothing unexpected.
News & Media
Analysts, for instance, wonder whether Hot Topic — which had same-store sales declines every month this year until October — will be able to get exclusive licenses and continue to consistently identify hot trends — or if "Twilight" was simply a lucky bite.
News & Media
Retailers like Gap and Hot Topic, which have been experiencing their own internal economic crises for many months, are in some ways prepared to weather the recession because they had an early start cutting inventory and learning to manage during hard times.
News & Media
On the first week of the class, the students were asked to write a persuasive essay about the implementation of K-12 in the Philippines, a topic which had been a focus of debate among school and government authorities.
Science
Expert writing Tips
Best practice
When introducing a "topic which has", ensure the relative clause clearly defines a key characteristic or attribute relevant to your discussion.
Common error
Avoid using "topic which has" repetitively within a short span. Vary your sentence structure by occasionally using synonyms like "that includes" or restructuring the sentence to avoid the relative clause altogether.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "topic which has" functions as a relative clause modifying a noun (topic). It introduces additional information or characteristics related to the topic being discussed, as demonstrated in Ludwig's examples.
Frequent in
Science
52%
News & Media
28%
Wiki
7%
Less common in
Formal & Business
5%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "topic which has" is a grammatically sound and frequently used construction for introducing additional details or characteristics about a subject. Ludwig AI confirms its correctness and common usage across various domains, particularly in scientific and news-related content. While versatile, it's important to maintain variety in sentence structure and avoid overuse. Consider related phrases like "subject that possesses" or "issue that includes" to enhance clarity and conciseness. Ensure that when employing "topic which has", the added clause directly relates to and clarifies the main subject, and choose 'which' for nonrestrictive clauses and 'that' for restrictive clauses.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
subject that possesses
Replaces "topic" with "subject" and restructures the relative clause for a more direct expression.
issue that includes
Substitutes "topic" with "issue" and "has" with "includes", shifting the focus slightly to containment.
matter that comprises
Replaces "topic" with "matter" and "has" with "comprises", suggesting the topic is made up of certain elements.
theme that incorporates
Substitutes "topic" with "theme" and "has" with "incorporates", implying the topic includes various aspects.
theme which includes
Replaces "topic" with "theme" and "has" with "includes", this option focusing the topic as containing more ideas within itself.
area that encompasses
Replaces "topic" with "area" and "has" with "encompasses", indicating the topic covers a wide scope.
concern which involves
Replaces "topic" with "concern" and "has" with "involves", framing the topic as something that may worry people.
field that addresses
Substitutes "topic" with "field" and "has" with "addresses", focusing on the problems or questions the topic deals with.
question that considers
Replaces "topic" with "question" and "has" with "considers", framing the topic as an inquiry.
point that features
Replaces "topic" with "point" and "has" with "features", turning the topic into a feature.
FAQs
How can I use "topic which has" in a sentence?
You can use "topic which has" to introduce a specific detail or characteristic about a subject. For example, "Sustainability is a "topic which has" a multidimensional effect on the environment".
What are some alternatives to saying "topic which has"?
Alternatives include phrases like "subject that possesses", "issue that includes", or "matter that comprises", depending on the specific nuance you want to convey.
Is it better to use "that" or "which" after "topic"?
While both "that" and "which" can be used, "which" is generally preferred when introducing nonrestrictive clauses (clauses that add extra information but are not essential to the meaning of the sentence). "That" is typically used for restrictive clauses.
Which is correct, "topic which has" or "topic that has"?
Both "topic which has" and "topic that has" are grammatically correct, but "topic that has" may sound more natural in some contexts, particularly with restrictive clauses. Use "topic which has" for non-restrictive clauses.
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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
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested