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
an event occurs
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "an event occurs" is correct and usable in written English.
It can be used in contexts where you are describing the happening of an event or situation, often in formal or academic writing. Example: "In scientific experiments, it is crucial to document what happens when an event occurs."
✓ Grammatically correct
Science
News & Media
Formal & Business
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
It's very difficult to get perfect evidence before an event occurs or even after it occurs.
News & Media
But there would be fairly drastic consequences if an event occurs".
News & Media
Such an event occurs roughly once in five years, leaving almost enough time for a vintner to become complacent.
News & Media
When an event occurs that doesn't fit our expectations or that seems threatening, we feel anxious and disturbed.
News & Media
The term event sink is used to describe the application code that is triggered when an event occurs.
What can you do is constantly train so that people know how to think, and when an event occurs, react appropriately".
News & Media
As this book reimagines its central death, an event occurs that utterly transforms the encounter between protagonist, father, author and reader.
News & Media
The fear is that if such an event occurs, there will be no checks and balances on the impulses of this president.
News & Media
Many applications have real-time constraints, which means the sink has to be informed before a deadline when an event occurs.
Science
The main purpose of event-based control is to reduce the computing load and communication efforts only after an event occurs which could save energy.
This method can help tourism asset owners prepare for the worst, and be capable of responding appropriately if and when such an event occurs.
Science
Expert writing Tips
Best practice
Use "an event occurs" in formal writing or when describing a sequence of events in a technical or scientific context. It's suitable for reports, research papers, and official documents where precision is important.
Common error
Avoid using "an event occurs" in casual conversation or informal writing. It can sound overly formal or stilted. Opt for simpler alternatives like "something happens" or "when it happens" in less formal settings.
Source & Trust
81%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "an event occurs" functions as a statement indicating that something is taking place. It's a declarative phrase used to report or describe an incident or occurrence. Ludwig's examples confirm that it is often used in a technical or formal context.
Frequent in
Science
46%
News & Media
45%
Academia
2%
Less common in
Formal & Business
2%
Wiki
1%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "an event occurs" is a grammatically correct and widely used expression, primarily found in formal and scientific contexts. According to Ludwig, it's suitable for technical reports, research papers, and official documents where precision is important. While it's a common phrase, it's advisable to avoid overusing it in informal settings, opting for simpler alternatives like "an event happens" or "when something happens". When choosing this phrase, consider the audience and the desired level of formality to ensure the message is conveyed appropriately.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
an event happens
A more common and slightly less formal way to express the occurrence of an event. It changes the verb.
an event takes place
A formal and neutral alternative, emphasizing the scheduling or arrangement of the event. It changes the verb.
an incident happens
Focuses on a specific occurrence, often negative or noteworthy. It changes the noun and verb.
an incident occurs
A more formal equivalent of 'an incident happens'. It changes the noun.
a situation arises
Emphasizes the emergence of a particular set of circumstances. It changes both the noun and verb.
a circumstance arises
Similar to 'a situation arises' but often implies a more specific or complex condition. It changes both the noun and verb.
something transpires
Suggests that an event unfolds or becomes known, often mysteriously. It changes both the noun and verb.
something unfolds
Implies a gradual revelation or development of an event. It changes both the noun and verb.
a development unfolds
Focuses on a specific unfolding or evolution of something. It changes the noun and verb.
an action unfolds
Emphasizes a process or course of action that is revealed or developed. It changes the noun and verb.
FAQs
How can I use "an event occurs" in a sentence?
You can use "an event occurs" to describe the happening of something, particularly in formal or technical contexts. For example, "The system logs a timestamp when "an event occurs"."
What can I say instead of "an event occurs"?
You can use alternatives like "an event happens", "an event takes place", or "something happens" depending on the context.
Is "an event occurs" formal or informal?
"An event occurs" tends to be more formal. In less formal contexts, phrases like "an event happens" or "when something happens" may be more appropriate.
What's the difference between "an event occurs" and "an event happens"?
While both phrases convey the same basic meaning, "an event occurs" is generally considered more formal and is often used in technical or scientific writing. "An event happens" is more commonly used in everyday language.
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
81%
Authority and reliability
4.5/5
Expert rating
Real-world application tested