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 have happened
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "that have happened" is correct and usable in written English.
It can be used to refer to events or occurrences that took place in the past and are relevant to the present context. Example: "There are many changes in the company that have happened over the last year."
✓ Grammatically correct
News & Media
Science
Wiki
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
Could that have happened?
News & Media
"When would that have happened?
News & Media
How might that have happened?
News & Media
How could that have happened?
News & Media
Would that have happened to a white president?
News & Media
How could that have happened if they were not involved?
News & Media
Look at all of the arrests that have happened.
News & Media
Architecturally, what are the best and worst things that have happened there since your childhood?
News & Media
"Things like abuse?" "Things that have happened to them," she repeats, crossly.
News & Media
Are you aware of all the changes that have happened to pensions?
News & Media
It happened against the backdrop of all the other things that have happened before".
News & Media
Expert writing Tips
Best practice
Use "that have happened" to refer to events completed in the past that have relevance or impact on the current situation being discussed.
Common error
While "that have happened" is grammatically correct, overuse can lead to passive voice. Strive for active constructions to make your writing more direct and engaging. For example, instead of "changes that have happened", consider "changes we've made".
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "that have happened" functions as a relative clause, modifying a noun and specifying events completed in the past. Examples from Ludwig show it describing changes, things, or events relevant to the present context. Ludwig AI confirms its correct usage.
Frequent in
News & Media
49%
Science
15%
Wiki
13%
Less common in
Formal & Business
2%
Encyclopedias
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, the phrase "that have happened" functions as a relative clause, referring to events completed in the past and relevant to the current context. According to Ludwig AI, the phrase is grammatically correct and widely used. It serves to provide background information or establish a timeline. While suitable for various contexts, it is most frequently found in news and media, science, and general writing. Remember to avoid overuse, opting for active constructions for clearer and more engaging writing. Consider alternatives like "that have occurred" or "that have taken place" to add variety to your writing.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
that have occurred
A synonym replacement for "happened", suitable for formal contexts.
that have taken place
A more formal and direct substitute for "that have happened".
that transpired
Replaces "happened" with a more formal synonym, indicating an event that has occurred.
that have arisen
Indicates that these events have emerged or come into existence.
that have come to pass
Emphasizes the realization or fulfillment of events.
that have unfolded
Suggests a gradual revelation or development of events.
that have ensued
Implies that these events followed as a consequence of something else.
that have resulted
Focuses on the outcome or consequence of previous actions or events.
that were experienced
Focuses on the act of undergoing events, highlighting personal or collective experiences.
that have befallen
Suggests that the events were experienced, often with a negative connotation.
FAQs
How can I use "that have happened" in a sentence?
Use "that have happened" to describe events or occurrences completed in the past and relevant to a present context. For example, "Consider all the events "that have happened" since the beginning of the year."
What are some alternatives to "that have happened"?
You can use alternatives such as "that have occurred", "that have taken place", or "that transpired" depending on the level of formality required.
Is "that have happened" grammatically correct?
Yes, "that have happened" is grammatically correct. It functions as a relative clause referring to past events. Ludwig AI confirms its proper usage in various contexts.
What's the difference between "that have happened" and "that happened"?
"That happened" refers to a single event in the past, while "that have happened" refers to multiple events or a continuous series of events up to the present. For example, "the accident "that happened"" versus "the changes "that have happened" since then".
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
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested