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
be which
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "be which" is not correct and usable in written English.
It does not form a coherent or grammatically correct expression in standard English usage. Example: "I want to be which one of the options is best for us."
⚠ May contain grammatical issues
News & Media
Academia
Science
Alternative expressions(7)
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
I should be,– which row were my lions?
Academia
The questions will be which platform comes out on top.
News & Media
The key question would be: which would take precedence?
News & Media
Eventually it might be which to leave off.
News & Media
The important element appears to be which facts are shared, and how.
Academia
Pence is what he has chosen to be, which is horrifying.
News & Media
The major problem facing the examiners would be: which options to leave out.
News & Media
One of the major questions would be: which is the best solid tumor to target?
Science & Research
Or at least it could be; which is the nature of hope.
News & Media
Another telling detail will be which administration officials also make the trip.
News & Media
He is appealing and believable when he needs to be, which is often.
News & Media
Expert writing Tips
Best practice
While the construction "be which" appears frequently, recognize that it's often grammatically unconventional. Consider restructuring your sentence to use a clearer and more direct alternative.
Common error
Avoid using "be which" in complex sentences where a more direct relative pronoun (that, who, whom) or a rephrasing would provide clarity. Simplify your sentence structure for better readability.
Source & Trust
85%
Authority and reliability
3.2/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "be which" often functions as a linking verb followed by a relative pronoun. It attempts to connect a subject to a description or identification, but often results in grammatically awkward constructions. Ludwig AI points out it is ungrammatical.
Frequent in
News & Media
43%
Academia
15%
Science
13%
Less common in
Formal & Business
12%
Wiki
3%
Reference
2%
Ludwig's WRAP-UP
The phrase "be which" is used frequently across various contexts but is grammatically questionable. Ludwig AI identifies it as incorrect. While prevalent in news and media, academic, and scientific sources, it's best to approach this phrase with caution. Alternatives such as "which it is" or restructuring sentences can offer more grammatically sound and clear communication. Pay attention to the context and purpose of your writing to choose the most effective and grammatically correct phrasing.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
which it is
Reverses the structure to emphasize the existing state or condition.
that it is
Substitutes "which" with "that" to specify a particular characteristic or state.
what it will be
Focuses on future possibilities rather than present attributes.
it would be
Shifts to a hypothetical or conditional scenario.
as it is
Highlights the current condition or state of something.
that is
Simplifies the structure to a more direct statement of fact.
it can be
Emphasizes the potential or possibility of a certain state.
what that is
Highlights a lack of information or context about something.
which could be
Adds a layer of possibility or speculation to a statement.
that might be
Introduces uncertainty or possibility regarding an attribute.
FAQs
How can I rephrase a sentence that uses "be which"?
Instead of using "be which", try using constructions like "which it is", "that it is", or restructuring the sentence to use a more direct relative pronoun. For example, change "The issue will be which candidate wins" to "The issue is which candidate wins".
Is it grammatically correct to use "be which" in formal writing?
While commonly used, "be which" is often considered grammatically unconventional. In formal writing, it's best to opt for clearer alternatives to ensure precision and grammatical correctness.
What are some alternatives to "be which" in questions?
In questions, you can often replace "be which" with "which is", "what is", or rephrase the question for clarity. For example, instead of "The question will be which team wins", ask "Which team will win?"
When is it acceptable to use "be which" in informal writing?
While still not grammatically ideal, "be which" might be acceptable in informal writing or speech where clarity isn't heavily compromised and the phrasing feels natural. However, even in informal contexts, consider whether a clearer alternative would enhance understanding.
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
85%
Authority and reliability
3.2/5
Expert rating
Real-world application tested