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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 formed that
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "which formed that" is grammatically correct and can be used in written English.
It can be used to refer to a specific element or aspect that contributed to the creation of something mentioned earlier in the text. Example: "The committee discussed various proposals, which formed that comprehensive plan we presented last week."
✓ Grammatically correct
Science
News & Media
Alternative expressions(20)
which characterizes that
what I'm saying is
which encompasses that
which describes that
which is that
which incorporates that
namely
which stated that
in other words
which contributes that
which indicated that
put another way
that led to
that is to say
which information that
that means
specifically
what this means is
which believes that
which enables that
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
1 human-written examples
For a given amount of mass, physicists Jacob Bekenstein and Stephen Hawking taught us, a black hole has a much, much higher entropy than that associated with the particles which formed that black hole.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
59 human-written examples
The second order of beauty belongs to human minds, or "the forms which form, that is, which have intelligence, action, and operation" (Ibid).
Science
To have a score for a factor, women had to answer all questions which form that factor.
The time until the basic CCN achieves stability varies deeply depending on both the number of CRs which form that network and the route refresh interval.
The DNA sample appears as individual DNA strands coming off of larger pieces of agglomerations with a netlike structure, which is due to the individual DNA strands which formed contacts that remain joined and form loops.
Science
X-ray diffraction (XRD) identified the formation of spinel-type CoFe2O4, which formed clusters that could be seen under scanning electron microscopy (SEM) analysis and nanometric particles seen under transmission electron microscopy (TEM).
Science
Not far from that spot were several other bloodstains, which formed a trail that eventually led officers to the roof.
News & Media
Short tributaries and short north-south segments of the major streams cut across ridges which formed small gaps that are still present.
Wiki
However, MMR deficiency did not affect the resistance to OX, which formed DNA-adducts that were not recognised by the MMR machinery (Raymond et al, 2002).
Science
To establish the ability of R2-T1AS cells to form tumors in mice, we injected 1 × 106 R2-T1AS cells alone, which formed tumors that on average measured 545 mm3 in volume on day 28 after inoculation.
Science
On 1 April 1918, the Uxbridge site came under control of the Royal Air Force, which had been formed that day by the amalgamation of the Royal Flying Corps and the Royal Naval Air Service.
Wiki
Expert writing Tips
Best practice
When using 'which formed that' consider if the sentence is too complex and hard to read, in that case, it might be more helpful to split the sentences in two to improve readability
Common error
Avoid using "which formed that" in simple sentences where a more direct construction would be clearer. Overuse can lead to convoluted and less impactful writing.
Source & Trust
84%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "which formed that" functions as a relative clause, providing additional information about a noun or concept mentioned earlier in the sentence. As Ludwig AI confirms, this construction is grammatically sound and used to specify the role of something in creating a subsequent element. The example provided by Ludwig of "The committee discussed various proposals, which formed that comprehensive plan we presented last week" is the perfect demonstration
Frequent in
Science
45%
News & Media
35%
Encyclopedias
10%
Less common in
Wiki
5%
Formal & Business
0%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "which formed that" functions as a relative clause to specify a causal or formative relationship, as confirmed by Ludwig AI. While grammatically correct, its frequency is rare, with the highest usage found in scientific and news contexts. To improve writing clarity, consider using simpler alternatives like "that created" or "that shaped" when appropriate. It's important to make sure you have the right context before using it, because the use of simpler alternatives might be more convenient for the readers.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
that which shaped
Emphasizes the shaping or influencing aspect, suggesting a more formative role.
that which constituted
Highlights the components or elements that came together to create something.
that which brought about
Focuses on the causal relationship, emphasizing the role of something in causing something else.
that which gave rise to
Similar to "brought about" but with a sense of emergence or origination.
that which established
Focuses on the act of setting up or creating something in a more formal or permanent way.
that which fabricated
Implies a more deliberate or constructed process of creation.
that which engineered
Suggests a precise and controlled process of creation, often with a technical or scientific connotation.
that which constructed
Similar to "fabricated" but with a more general sense of building or assembling.
that which composed
Highlights the individual parts contributing to the whole
that which generated
Indicates the creation of something as a result of a specific process or action.
FAQs
How can I use "which formed that" in a sentence?
Use "which formed that" to provide additional information about a noun, specifying its role in creating or shaping something. For example: 'The discussions, "which formed that" policy, were lengthy'.
Is "which formed that" grammatically correct?
Yes, "which formed that" is grammatically correct. It's a relative clause construction adding detail to a preceding noun. It is often used in formal writing.
What are some alternatives to "which formed that"?
Alternatives include phrases like "that shaped", "that created", or "that brought about", depending on the specific nuance you want to convey.
When should I avoid using "which formed that"?
Avoid using "which formed that" in informal contexts where simpler phrasing would be more appropriate. Also, if the sentence becomes convoluted, consider rephrasing for clarity.
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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
84%
Authority and reliability
4.1/5
Expert rating
Real-world application tested