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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
a pair was present
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "a pair was present" is correct and usable in written English.
It can be used to indicate that two items or individuals were in attendance or available in a particular situation. Example: "During the meeting, a pair was present to discuss the new project proposal."
✓ Grammatically correct
Science
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
We considered a territory as occupied when a pair was present breeding and/or showing territorial behaviour.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
59 human-written examples
Each parallelepiped of a pair was presented one at a time to the hand and subjects were instructed to determine with a freely chosen tactile exploration strategy which of the two sequentially presented objects was more oblong.
Therefore, we calculated for each pair of T3E gene a frequency of association, and we considered only cases where both T3E genes in a pair are present in the tested strains (Figure 4).
Science
Turning to the locus of effect, the first two experiments provided evidence that the requirement for millisecond-level simultaneity was the same whether the two members of a pair were presented to the same hemiretina, i.e., in the same half of the visual field, or were shown with one member falling on the nasal hemiretina and the other on the temporal hemiretina.
Science
When a telephone call was answered, an attempt was made to determine whether an adult child pair was present.
In the B genome, all Bj and Bc alleles for which a homologous chromosome pair was present (i.e., excluding Bj3 and Bj7) segregated with high fidelity (Fig. 4b).
Science
The removal of flanking sequence was done when an ambiguous base pair was present in the sequence trace file.
Science
On each trial, a stimulus pair was presented (e.g., A2 C2).
A target shape from each pair was presented.
The couples were eliminated one by one by several judges, who considered the elegant bearing of the men, the grace of the women, and the inventiveness of the dancers; the last remaining pair was presented with a highly decorated cake.
Encyclopedias
Each odor pair was presented in a discrete block of 24 trials.
Science
Expert writing Tips
Best practice
Use "a pair was present" when you want to specifically highlight the existence or attendance of two related or matching items or individuals, especially in contexts where the pairing is significant.
Common error
Avoid using "a pair was present" when simply stating that two entities were at a location; simpler alternatives like "two people were there" might be more appropriate if the pairing isn't crucial.
Source & Trust
82%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "a pair was present" functions as a statement of existence or attendance. Ludwig shows it is frequently used in scientific articles to denote the presence of paired elements or individuals within a study or observation. This usage aligns with Ludwig AI suggestion that it communicates the presence of two items or individuals in a specific scenario.
Frequent in
Science
100%
Less common in
News & Media
0%
Formal & Business
0%
Encyclopedias
0%
Ludwig's WRAP-UP
In summary, the phrase "a pair was present" is a grammatically correct expression used to indicate the existence or attendance of two related entities. Ludwig AI confirms its usability in written English. While relatively rare, as evidenced by a low number of examples, it is most commonly found in scientific contexts where the relationship between the two entities is relevant. When considering alternatives, it is important to reflect if two entities are part of a unit or collection. If they aren't, it may be appropriate to use "both were there", "two individuals were there" or "two were present".
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
both were there
Simplifies the phrase to its core meaning, suitable when the 'pair' aspect is already understood.
a duo existed
Replaces "pair" with "duo" and uses "existed" instead of "was present", focusing on the existence of two items or people.
two individuals were there
Breaks down "pair" into "two individuals" and uses "were there" for a more direct statement of presence.
the pair existed
Similar to 'a duo existed', focusing on the existence rather than the presence.
a couple attended
Replaces "pair" with "couple" and uses "attended", implying presence at an event or location.
two items were available
Similar to 'a brace was available' but specifies that the two available things are items.
a twosome was in attendance
Uses "twosome" as a synonym for pair and "was in attendance" to emphasize formal presence.
a set of two occurred
More abstract replacement, suitable when referring to non-human pairs or data points.
a matching set was there
Emphasizes that the items are not only a pair, but also matching or related.
a brace was available
Uses 'brace' as a synonym for 'pair' and 'available' instead of 'present', implying readiness or accessibility.
FAQs
How can I use "a pair was present" in a sentence?
You can use "a pair was present" to indicate that two related or matching entities were in attendance or existed in a particular context. For instance, "During the study, "a pair was present" to evaluate the software." Remember that "two individuals were there" might be more fitting depending on the specific situation.
What are some alternatives to "a pair was present"?
Alternatives include "both were there", "a couple attended", or "two individuals were there". The best choice depends on the nuance you want to convey regarding the relationship between the two entities.
Is "a pair was present" formal or informal?
The phrase "a pair was present" is relatively neutral in tone and can be used in both formal and informal contexts. However, in very informal settings, simpler phrasing such as "both were there" might be preferred.
What's the difference between "a pair was present" and "two were present"?
While both phrases indicate the presence of two entities, "a pair was present" emphasizes that the two entities are related or form a set. "Two were present" simply states that two entities were there without implying a relationship.
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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
82%
Authority and reliability
4.1/5
Expert rating
Real-world application tested