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
they were opened
Grammar usage guide and real-world examplesUSAGE SUMMARY
The sentence 'they were opened' is correct and usable in written English.
This sentence is usually used in the context of a subject having been opened (usually a container of some sort). For example: 'The boxes were opened, revealing a pile of books inside.'.
✓ Grammatically correct
News & Media
Science
Academia
Alternative expressions(17)
they had been unsealed
they became accessible
they were released
they were discovered
they were made public
they were initiated
they were commenced
they were incorporated
they were demonstrated
they were involved
they were operated
they were promised
they were contributed
they were reported
they were receptive
they were opening
they were elected
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
They were opened with battery-powered letter openers.
News & Media
AHRENS: Open or before they were opened?
Academia
They were opened after the revolution that overthrew Nicolae Ceausescu.
News & Media
But they were opened, each one of them.
News & Media
They were opened several hours later, so that the place might be aired.
News & Media
In 1979, the year they were opened to the public, 20,000 visitors came.
News & Media
The cookies might be pulverized by the time they were opened.
News & Media
They were opened and adjourned in 1983, and reopened after Sampson submitted his reports in 1987.
News & Media
First they were opened up down the left side, where Howedes seemed to be targeted by Messi and Ezequiel Lavezzi.
News & Media
They might start closing gates in as soon as a week, in the same gradual manner as they were opened.
News & Media
Unusually, he had the chance to take action to stop the archives being 'weeded' before they were opened to historians".
News & Media
Expert writing Tips
Best practice
When using "they were opened", ensure the subject (the 'they') is clearly defined to avoid ambiguity. For example: "The files were opened" is clearer than "They were opened."
Common error
Avoid using "they were opened" without a clear antecedent. Ensure the reader knows what 'they' refers to. Without context, the sentence can be confusing.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "they were opened" functions as a passive voice construction, indicating that an unspecified agent performed the action of opening something. Ludwig AI validates its grammatical correctness and widespread usage.
Frequent in
News & Media
63%
Science
23%
Academia
5%
Less common in
Encyclopedias
2%
Wiki
2%
Formal & Business
0%
Ludwig's WRAP-UP
The phrase "they were opened" is a versatile and commonly used passive voice construction, as confirmed by Ludwig. It effectively communicates a state change from closed to open, whether literally or metaphorically. Predominantly found in news and media contexts, its neutral register makes it suitable for a broad audience. Ludwig's AI identifies the phrase as grammatically correct, although it emphasizes the importance of contextual clarity to avoid ambiguity. For alternative expressions, consider "they had been unsealed", or "they became accessible" to tailor the meaning to specific situations.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
they had been unsealed
Focuses on the action of unsealing something previously sealed.
they had been revealed
Emphasizes the act of making something visible or known.
they were discovered
Highlights the finding or uncovering of something previously unknown.
they became accessible
Indicates that something is now available or reachable.
they were made public
Focuses on the act of sharing information or making something available to everyone.
they were unlocked
Implies a process of gaining access or freedom.
they were released
Highlights the act of freeing something from confinement or restriction.
they were initiated
Focuses on the commencement or start of something.
they were commenced
Similar to 'initiated', but often used in more formal contexts.
they were initiated
Emphasizes the beginning or launch of something.
FAQs
What does "they were opened" mean?
The phrase "they were opened" indicates that something, referred to as "they", was in a closed or sealed state and has now been accessed or made accessible. The context usually implies physical opening (like a door or container) or metaphorical opening (like an investigation).
How can I use "they were opened" in a sentence?
Use "they were opened" when you want to describe the action of something being unsealed or accessed after being closed. For example, "The archives "they were opened" to the public in 2002."
What are some alternatives to "they were opened"?
Depending on the context, you can use alternatives like "they had been unsealed", "they became accessible", or "they were released".
Is it better to use active or passive voice with the verb 'open'?
The choice between active and passive voice depends on the context. Use active voice (e.g., 'Someone opened the door') when you want to emphasize the actor. Use passive voice ("they were opened") when you want to emphasize the object or when the actor is unknown or unimportant.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
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
4.5/5
Expert rating
Real-world application tested