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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
which would have
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "which would have" is correct and commonly used in written English.
It is a subordinate clause that is used to express a hypothetical or unrealized situation. It is often used to talk about something that could have happened in the past, but did not actually happen. Example: If I had studied harder, I would have passed the exam.
✓ Grammatically correct
News & Media
Academia
Science
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
Which would have killed you".
News & Media
Which would have been a shame.
News & Media
Which would have been lost otherwise".
News & Media
"Which would have been quite daft.
News & Media
Which would have made me feel worse.
News & Media
Which would have been provided by Mum.
News & Media
Which would have been cool but also realistic.
X-rays, which would have revealed any fracture, were negative.
News & Media
Which would have been great, but for two things.
News & Media
That was a violation, which would have added a stroke.
News & Media
Which would have been OK if my life hadn't changed.
News & Media
Expert writing Tips
Best practice
Use "which would have" to describe hypothetical past situations and their consequences. Ensure your sentence clearly establishes the unrealized condition that led to the hypothetical outcome.
Common error
Avoid using "which would of" instead of "which would have". The phrase "would of" is a common misspelling and grammatically incorrect.
Source & Trust
88%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "which would have" functions as a relative clause introducing a hypothetical or unrealized condition in the past. It modifies a preceding noun or clause, describing a scenario that didn't actually occur. As Ludwig AI explains, it expresses something that could have happened but didn't.
Frequent in
News & Media
42%
Science
32%
Academia
26%
Less common in
Wiki
2%
Formal & Business
2%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "which would have" is a relative clause used to express a hypothetical situation in the past. As Ludwig AI confirms, it's grammatically correct and frequently used. It appears most commonly in News & Media, Science, and Academic contexts. When writing, remember to use "which would have", not "which would of". Alternatives include "that would have" or "it would have", depending on the context and desired emphasis. Its prevalent usage across authoritative sources underscores its importance in conveying unrealized possibilities and outcomes.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
that would have
Replaces "which" with "that", slightly altering the focus but maintaining the hypothetical condition.
that would've
A contracted form of "that would have", making it more informal.
it would have
Shifts the focus to "it", referring to a specific subject that the "which" clause modifies.
this would have
Emphasizes a specific scenario or situation that "this" refers to.
that outcome would have
Specifies that the hypothetical result relates to a specific outcome.
what would have
Changes the clause to inquire about the potential consequences or possibilities that "what" introduces.
something that would have
Adds a more general referent, implying the clause is about a less defined element.
that action would have
Highlights a hypothetical scenario involving an action.
in that case it would have
Introduces a conditional context explicitly, indicating a hypothetical scenario.
under those circumstances it would have
Similar to the previous, but provides a more formal and explicit setting for the hypothetical.
FAQs
How to use "which would have" in a sentence?
Use "which would have" to describe a hypothetical past scenario. For example: "The earlier train, "which would have" been faster, was cancelled."
What does "which would have" mean?
It indicates a past action or state that did not happen, but could have under different conditions. It presents a hypothetical result.
Is "which would of" correct, or should I always use "which would have"?
"Which would of" is incorrect. The correct form is always ""which would have"", using the auxiliary verb "have".
What are some alternatives to "which would have" in a formal context?
In formal writing, consider alternatives like "that would have" or "had that occurred". These provide a slightly more formal tone while retaining the same meaning.
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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
88%
Authority and reliability
4.6/5
Expert rating
Real-world application tested