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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
that I referred
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "that I referred" is correct and usable in written English.
You can use it when you want to reference something you mentioned earlier in your writing or conversation. Example: "In my previous email, I discussed the project timeline that I referred to in our meeting."
✓ Grammatically correct
News & Media
Science
Alternative expressions(3)
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
22 human-written examples
I've stuck to videos that I referred to in the article.
News & Media
That's the subject of the IMF paper that I referred to earlier.
News & Media
So I purchased another bike that I referred to as my "winter trainer", a 1950s Grandini with room for mudguards.
News & Media
But perhaps you noticed that I referred to Michelle as a hip-hop mogul, as opposed to an artist herself.
News & Media
"I completely refute Mr Pyne's statement that I referred to him in such a manner," she said in a statement.
News & Media
For example, the three-variable probability model that I referred to above explains less than ten per cent of the variation in the data.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
36 human-written examples
Note that i refers to i-th row vector here.
We assume that zero means nothing, and so we have math; that "I" refers to oneself and that "he" refers to another, and so we have language.
News & Media
To attest to that, I refer to the Quranic Verse: "If you give thanks, I will give you more".
News & Media
To answer that, I refer to Point No. 1 above.
News & Media
He refused to give his name and insisted that I refer to him as Jan.
News & Media
Expert writing Tips
Best practice
Use "that I referred" to create cohesion in your writing by linking back to previous points.
Common error
Avoid using "that I referred" if it's not immediately obvious what you're referring to. Provide additional context or rephrase for clarity.
Source & Trust
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "that I referred" functions as a relative clause, specifically a restrictive (or defining) relative clause. This type of clause modifies a noun or noun phrase, providing essential information to identify it. As shown by Ludwig, the clause modifies a noun or noun phrase.
Frequent in
News & Media
50%
Science
32%
Formal & Business
9%
Less common in
Academia
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, the phrase "that I referred" serves as a relative clause used to reference a previously mentioned item or topic. As Ludwig AI confirms, the phrase is grammatically sound and acceptable for use in written English. It commonly appears in News & Media and Science contexts and demonstrates its utility in linking ideas across different parts of writing. While it's a useful phrase, clarity is crucial: ensure the reference is obvious to your audience to avoid confusion.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
which I referenced
Replaces "referred" with "referenced", maintaining similar formality.
to which I referred
A more formal and inverted phrasing of the original query.
what I previously referred to
Reorders the sentence structure for emphasis on the previous reference.
that I mentioned earlier
More explicit in indicating the reference was made at a previous time.
that I indicated
Implies a clearer and more deliberate act of pointing something out.
that I alluded to
Uses a more formal verb, "alluded", suggesting a less direct reference.
that I cited
More formal and specific, often used when quoting or formally referring to a source.
that I spoke of
Uses a more conversational verb, "spoke", making it less formal.
that I brought up
Indicates the introduction of a topic or subject.
that I touched on
Suggests a brief or superficial mention of something.
FAQs
How can I use "that I referred" in a sentence?
Use "that I referred" to link back to a topic or item you've already introduced, like: "The study "that I referred to" earlier shows a significant correlation."
What's a more formal way to say "that I referred"?
For a more formal tone, you could use alternatives like "to which I alluded" or "which I previously referenced".
Is it okay to use "that I referred to" multiple times in the same piece of writing?
While grammatically correct, overuse of "that I referred to" can make your writing repetitive. Try to vary your language by using alternatives or restructuring your sentences.
What's the difference between "that I referred" and "that I mentioned"?
"That I mentioned" is a simpler, more direct way to reference something you previously said, while "that I referred" implies a more specific or deliberate reference. They are largely interchangeable but "that I mentioned" is less formal.
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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
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested