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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 needs to
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "which needs to" is correct and usable in written English.
You can use it in place of "that needs to" to indicate a requirement or necessary action. For example, "The report needs to be completed by the end of the week, which needs to be done by tomorrow."
✓ Grammatically correct
News & Media
Science
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
There is real public interest which needs to be addressed.
News & Media
It is this bias which needs to be challenged.
News & Media
That is the constitutional crisis which needs to be prevented".
News & Media
"There is an issue here which needs to be addressed".
News & Media
Syracuse, which needs to establish a running game, got nowhere.
News & Media
This is an historical issue which needs to be resolved.
News & Media
The fundamental adjustment which needs to take place, however, is the simplest and hardest one.
News & Media
But we are concerned about unintended consequences and the detail, which needs to be thought through".
News & Media
There is the potential for a blurring of professional boundaries, which needs to be attended to.
News & Media
The real work still lies with Congress, which needs to rewrite the law.
News & Media
This problem is creating a barrier between you and your wife, which needs to be addressed.
News & Media
Expert writing Tips
Best practice
When using "which needs to", ensure the relative clause is clearly linked to the noun it modifies to avoid ambiguity. For example, "The report, which needs to be completed by Friday, is essential for the meeting."
Common error
Avoid placing the "which needs to" clause in a way that it modifies the wrong noun. For instance, instead of "The car, which needs to be repaired, was parked in the garage", be precise: "The car that needs to be repaired was parked in the garage."
Source & Trust
85%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "which needs to" functions as a relative clause introducer, connecting a dependent clause to an independent clause and specifying a requirement or necessary action. This construction is supported by Ludwig's examples and AI confirmation, indicating its grammatical correctness.
Frequent in
News & Media
37%
Science
36%
Formal & Business
10%
Less common in
Wiki
7%
Reference
5%
Academia
5%
Ludwig's WRAP-UP
In summary, "which needs to" is a grammatically sound and frequently used phrase that introduces relative clauses to express necessity. As confirmed by Ludwig, this phrase is correct for written English. It functions to add extra information about a noun, clarifying required actions or conditions. While suitable for both formal and informal contexts, careful attention should be paid to modifier placement to ensure clarity. The phrase appears most often in news and media, and scientific publications. When aiming for more directness, consider alternatives like "that requires" or "that must be".
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
that requires
Focuses on the requirement aspect, using a more direct verb.
that is essential to
Emphasizes the essential nature of the action.
that must be
Highlights obligation or compulsion.
that demands
Stresses the urgency or importance.
that calls for
Suggests a need for a specific response or action.
that necessitates
Indicates that something is unavoidable or indispensable.
that is imperative to
Highlights the critical or crucial nature.
that is obligatory for
Emphasizes the compulsory nature.
that warrants
Suggests that something justifies a particular action.
that benefits from
Implies that something would gain from a particular action or element.
FAQs
How can I use "which needs to" in a sentence?
The phrase "which needs to" introduces a relative clause specifying a necessary action or condition. For example, "The document, "which needs to be signed", is on the table."
What are some alternatives to "which needs to"?
Alternatives include "that requires", "that must be", or "that is essential to", depending on the specific nuance you want to convey.
Is there a difference between "which needs to" and "that needs to"?
While both are often interchangeable, "which" typically introduces non-restrictive clauses (adding extra information), while "that" introduces restrictive clauses (essential information). Using "which needs to" implies the information is additional, while "that needs to" suggests it's crucial for identifying the subject.
Can "which needs to" be used in formal writing?
Yes, "which needs to" is appropriate for formal writing, especially when providing additional, non-essential information. However, ensure the sentence remains clear and concise. Using "that requires" might sometimes be more direct and preferred in certain formal contexts.
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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
85%
Authority and reliability
4.6/5
Expert rating
Real-world application tested