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
that were
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase 'that were' is correct and usable in written English.
You can use it when comparing something to its past state or to refer to a hypothetical past state. For example, "The library was once filled with books that were mostly about history."
✓ Grammatically correct
News & Media
Science
Wiki
Alternative expressions(6)
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
As if that were news.
News & Media
If only that were so.
News & Media
As if that were possible.
News & Media
Princess costumes that were — horrors!
News & Media
Boiled greens that were gray.
News & Media
Things that were sharp dulled.
News & Media
Moments like that were glorious.
News & Media
As if that were a good thing.
News & Media
Others plunged into markets that were saturated.
News & Media
Sure, there were things that were irritating.
News & Media
Things that were in focus fogged.
News & Media
Expert writing Tips
Best practice
When describing past conditions or states, ensure the verb tense aligns correctly. Example: "The conditions "that were" present then are different now."
Common error
Avoid using "that was" when referring to plural nouns. "That was" is for singular nouns. Correct: "The problems "that were" identified." Incorrect: "The problems that was identified."
Source & Trust
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "that were" functions as a relative pronoun and auxiliary verb combination, introducing a relative clause that modifies a noun in the past tense. As Ludwig AI points out, the phrase is grammatically sound and usable.
Frequent in
News & Media
64%
Science
12%
Wiki
10%
Less common in
Formal & Business
5%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "that were" is a common and grammatically sound construction used to introduce relative clauses in the past tense. Ludwig AI confirms its correctness and usability. Its versatility is evident in its prevalence across diverse contexts, including news, scientific writing, and general usage. While its register is generally neutral, it's crucial to ensure proper usage with plural nouns and avoid confusion with singular forms like "that was". Alternatives such as "which had been" or "that used to be" can add nuance, but "that were" remains a standard and effective way to describe past conditions or characteristics.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
that once were
Adds "once" to emphasize that something was true in the past but is no longer true now.
that used to be
Employs "used to be" to indicate a past state or habitual action that is no longer ongoing.
which had been
Uses "which" instead of "that" to introduce a nonrestrictive clause and "had been" to emphasize a past state.
that had existed
Replaces "were" with "had existed" to focus on the past existence of something.
which constituted
Uses "which constituted" to specify what elements composed something in the past.
that consisted of
Replaces "were" with "consisted of" to describe the components of something in the past.
that comprised
Uses "comprised" to indicate the elements that made up something in the past.
that previously happened
Substitutes "were" with "previously happened" to emphasize the occurrence of an event in the past.
which embodied
Replaces "were" with "embodied" to emphasize a specific quality or characteristic in the past.
that have been
Switches to the present perfect tense to describe something that started in the past and continues to the present.
FAQs
How do I use "that were" in a sentence?
"That were" is used to introduce a relative clause referring to a plural noun in the past. For example, "The documents "that were missing" have been found".
What are some alternatives to using "that were"?
Depending on the context, you can use phrases like "which had been", "that had existed", or "that used to be".
Is it correct to say "that was" instead of "that were"?
No, "that was" is used with singular nouns, while "that were" is used with plural nouns. For instance, "The book that was interesting" versus "The books "that were interesting"".
What's the difference between "that were" and "which were"?
"That were" introduces a restrictive clause necessary for defining the noun, while "which were" introduces a nonrestrictive clause providing additional, non-essential information. Example: "The houses "that were damaged" needed repair" (defining) vs. "The houses, which were damaged, needed repair" (additional information).
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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
4.5/5
Expert rating
Real-world application tested