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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
that have occured
Grammar usage guide and real-world examplesUSAGE SUMMARY
"that have occurred" is correct and usable in written English.
You can use it to introduce a list of events or actions that have taken place in the past. For example: "In the past year, many positive changes that have occurred in our community."
News & Media
Science
Formal & Business
Alternative expressions(18)
that have occurred
that have taken place
that have happened
that have transpired
that has occurred
that have come about
that have unfolded
that have ensued
that have developed
that have arisen
that have materialized
that have existed
that have arrived
that have rocked
that have encountered
that have emerged
that were delivered
that are available
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
4 human-written examples
The move is designed to stop the market racing away, so it could put the brakes on the recent rapid rise in house prices that have occured in some parts of the country.
News & Media
"What Jagmeet did in pushing for coverage of what's going on in Punjab isn't about the deaths that have occured recently, it's about something that's been going on for many years.
News & Media
This paper surveys the major changes in patent policy and practice that have occured in the last two decades in the U.S., and reviews the existing analyses by the economists that attempt to measure the impacts these changes have had on the processes of technological change.
Science
Clinton is also leading Sanders in votes, earning nearly 2 million more votes than the Vermont senator in the primary contests that have occured thus far.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
56 human-written examples
That is a bigger fall than the one that has occured in the euro zone, which is flirting with deflation.
News & Media
Much of the conversation on the bus ride centered on an incident that had occured after a dance the night before.
News & Media
National Geographic has produced an animated gif showing the "striking" retreat of Arctic ice that has occured over the last few years.
News & Media
Her book unintentionally underlines that point with some sentences that are ungrammatical or contain simple typographical errors: "It's hard to dispute the personal impact of the long (and seemingly endless) string of mergers, layoffs, and other human resources cutbacks that has occured among the nation's banks".
News & Media
Seems to me its the same problem that has occured in every laptop refresh apple has done in recent memory.
News & Media
Soon after SocGen's announcement, Fitch Ratings downgraded its long-term default rating to "-AA," from "AA," and the bank's individual rating to B, from A, citing the substantial trading losses that had occured within its core trading division.
News & Media
It also reduced the bank's individual rating, which measures its ability to deal with risk, to B from A, citing the substantial trading losses that had occured within its core trading division.
News & Media
Expert writing Tips
Best practice
Use "that have occurred" to introduce events or changes in a formal or semi-formal context. Ensure that the subject preceding "that" is plural to maintain grammatical correctness.
Common error
The most common error is misspelling "occurred" as "occured" (missing one 'r'). Always double-check the spelling to maintain credibility.
Source & Trust
84%
Authority and reliability
4.3/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "that have occurred" functions as a relative clause, modifying a noun or noun phrase by providing additional information about events or changes that have taken place. As Ludwig AI confirms, it is grammatically sound.
Frequent in
News & Media
33%
Science
33%
Formal & Business
33%
Less common in
Science
0%
News & Media
0%
Formal & Business
0%
Ludwig's WRAP-UP
In summary, the phrase "that have occurred" is a grammatically acceptable relative clause used to describe past events or changes. Ludwig AI validates its correctness. It is commonly found in news, scientific, and business contexts, indicating a neutral to formal register. While semantically similar alternatives like "that have taken place" and "that have happened" exist, it's essential to ensure the correct spelling of "occurred" to maintain clarity and professionalism.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
that have taken place
Replaces "occurred" with "taken place", offering a more common alternative.
that have happened
Replaces "occurred" with "happened", providing a simpler and more direct alternative.
that have come about
Substitutes "occurred" with "come about", offering a more conversational alternative.
that have transpired
Substitutes "occurred" with "transpired", adding a slightly more formal tone.
that have unfolded
Replaces "occurred" with "unfolded", suggesting a gradual revelation of events.
that have ensued
Substitutes "occurred" with "ensued", indicating that the events followed as a consequence.
that have developed
Replaces "occurred" with "developed", suggesting a process of growth or evolution.
that have arisen
Substitutes "occurred" with "arisen", implying that the events have emerged or come into existence.
that have materialized
Replaces "occurred" with "materialized", implying that the events have become real or concrete.
that have existed
Replaces "occurred" with "existed", focusing on the state of being rather than the event itself.
FAQs
How can I use "that have occurred" in a sentence?
Use "that have occurred" to introduce a clause describing events or changes that have happened in the past. For example, "The changes "that have occurred" in the market have significantly impacted our strategy."
What are some alternatives to "that have occurred"?
Alternatives include phrases like "that have taken place", "that have happened", or "that have transpired", depending on the context and desired level of formality.
Is it grammatically correct to say "that have occurred"?
Yes, "that have occurred" is grammatically correct when used to introduce a relative clause referring to plural events or changes that have happened. Make sure the antecedent is plural.
What is the difference between "that has occurred" and "that have occurred"?
"That has occurred" is used when referring to a singular event or change, while "that have occurred" is used for plural events. For example, "The error "that has occurred"" (singular) versus "The errors "that have occurred"" (plural).
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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
4.3/5
Expert rating
Real-world application tested