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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
has occurred
Grammar usage guide and real-world examplesUSAGE SUMMARY
"has occurred" is correct and usable in written English.
You can use it to refer to a past event that happened at an unspecified time, e.g. "Something unexpected has occurred."
✓ Grammatically correct
News & Media
Academia
Science
Encyclopedias
Alternative expressions(20)
has been developing
has been arriving
came about
has happened
has been taking place
an error has occurred
has been occurring
has surfaced
has developed
has contributed
has corrected
has been assisting
has taken place
has ensued
has been in progress
has evolved
has come to pass
has been underway
has been happening
occurred
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
Neither has occurred.
News & Media
Habituation has occurred.
Encyclopedias
Re-education has occurred.
News & Media
Major dislocation has occurred.
Academia
The opposite has occurred.
News & Media
The change has occurred.
News & Media
The crisis has occurred.
News & Media
Secession has occurred!
News & Media
Some positive news has occurred.
News & Media
Fermentation has occurred.
News & Media
Perhaps, unnoticed, one has occurred.
News & Media
Expert writing Tips
Best practice
Use "has occurred" when you want to indicate that an event has happened without specifying exactly when it took place. It's suitable for both formal and informal contexts.
Common error
Avoid using "has occurred" with specific past time markers (e.g., "yesterday", "last week"). Instead, use the simple past tense: "It occurred yesterday."
Source & Trust
87%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "has occurred" functions as a verb phrase in the present perfect tense. Ludwig AI confirms its correctness, indicating an action that started in the past and has relevance to the present. It serves to assert that an event or situation has taken place.
Frequent in
News & Media
53%
Academia
20%
Science
15%
Less common in
Encyclopedias
6%
Wiki
3%
Formal & Business
3%
Ludwig's WRAP-UP
In summary, "has occurred" is a grammatically sound and versatile phrase indicating that something has happened in the past with present relevance. Ludwig AI confirms its correctness and common usage. It is prevalent in news, academic, and scientific contexts and can be effectively used in various writing styles. When using this phrase, be mindful of tense consistency and avoid using it with specific past time markers. Alternative phrases such as "has happened" or "has taken place" can be used depending on the specific nuance you want to convey.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
has happened
A more common and slightly less formal synonym.
has taken place
Slightly more formal and often used for events or planned activities.
has transpired
More formal and often used in official or investigative contexts.
has come to pass
A more literary or old-fashioned way of saying "has occurred".
has arisen
Suggests that something has emerged or appeared, often unexpectedly.
came about
Implies a process or series of events leading to the occurrence.
has ensued
Indicates that something has followed or resulted from a previous action or event.
has materialised
Suggests that something has become real or concrete after a period of being uncertain or planned.
has unfolded
Suggests a revealing or gradual coming into view, like a story.
has developed
Implies a gradual unfolding or evolution of something.
FAQs
How do I use "has occurred" in a sentence?
Use "has occurred" to describe an event that has happened at an unspecified time in the past and is relevant to the present. For example, "An error "an error has occurred"."
What can I say instead of "has occurred"?
You can use alternatives like "has happened", "has taken place", or "has transpired" depending on the context.
Which is correct, "has occurred" or "occurred"?
"Has occurred" is the present perfect tense, indicating a past action with present relevance, while "occurred" is the simple past tense, indicating a completed action in the past. Choose "occurred" when the time of the event is specified or implied.
What's the difference between "has occurred" and "is occurring"?
"Has occurred" indicates a completed action, whereas "is occurring" describes an action that is currently in progress. For example, "A change "the change has occurred"" vs. "A change "a change is occurring"".
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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
87%
Authority and reliability
4.6/5
Expert rating
Real-world application tested