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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
is to be opened
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "is to be opened" is correct and usable in written English.
It can be used to indicate that something is intended or scheduled to be opened at a future time. Example: "The new art exhibit is to be opened next month, showcasing local artists."
✓ Grammatically correct
News & Media
Science
Alternative expressions(20)
is set to be opened
will be opened
is scheduled to open
is set to open
will open
is going to open
is due to open
is slated to open
is expected to open
will commence
will be inaugurated
is going to be opened
is to be initiated
is to be inaugurated
is to be operated
is to be contemplated
is to be reported
is to be involved
is to be incorporated
is to be demonstrated
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
39 human-written examples
A new visitor centre is to be opened in December.
News & Media
The Fair is to be opened by hookup between Earth and Arcturus.
News & Media
The White Garden is to be opened to the public again on Sept. 11.
News & Media
An inquest into the nurse's death is to be opened tomorrow.
News & Media
True, but if a track is to be opened to everyone, it should be safe for everyone.
News & Media
A single inquest covering all the British victims is to be opened by the West London Coroner.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
21 human-written examples
It was to be opened in 2000.
News & Media
Twenty new jails are to be opened by 2012, and 13 old ones shut.
News & Media
In addition, new sections of path are to be opened in Kent in a few weeks.
News & Media
The draws were to be opened to allow traffic to exit the beach by H+3 hours.
Wiki
A second stage was to be opened if ⩾1/21 responses were observed in the first stage.
Science
Expert writing Tips
Best practice
Use "is to be opened" when referring to future events with a sense of planning and certainty, especially in formal contexts like news reports or official announcements.
Common error
Avoid using "is to be opened" in casual conversation or informal writing. Opt for simpler alternatives like "will open" or "is going to open" to maintain a natural tone.
Source & Trust
90%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "is to be opened" functions as a passive construction indicating a future event or scheduled action. It's used to convey that something will be inaugurated or made accessible at a later time, as seen in Ludwig's examples regarding visitor centers, inquests, and exhibitions.
Frequent in
News & Media
67%
Science
22%
Formal & Business
11%
Less common in
Wiki
0%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "is to be opened" is a grammatically correct and relatively common construction used to indicate a planned future event, typically an inauguration or the commencement of access to something. According to Ludwig, it is most frequently found in News & Media and Science contexts, suggesting a neutral to formal register. While versatile, it's best suited for announcements and official reporting rather than casual conversation. Alternative phrases such as "will be opened" or "is scheduled to open" can provide similar meanings with slight variations in tone and formality. The Ludwig AI confirms the validity and usability of the phrase.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
will be opened
Indicates a future event with a slightly less formal tone than "is to be opened".
is scheduled to open
Emphasizes the planned and scheduled nature of the opening.
is set to open
Similar to "is scheduled to open", implying a confirmed plan.
is due to open
Suggests an expected or anticipated opening at a specific time.
is planned to be opened
Highlights the planning aspect of the opening.
is slated to open
Implies that the opening is officially planned and expected.
is expected to open
Indicates an anticipation or expectation of the opening.
will commence
Focuses on the beginning or starting of something, suitable for formal contexts.
will be inaugurated
Conveys a formal or ceremonial opening, often for significant events.
is going to be opened
A more informal way of expressing a future opening.
FAQs
How can I use "is to be opened" in a sentence?
You can use "is to be opened" to indicate a future event that is planned or scheduled. For example, "The new museum "is to be opened" next month."
What can I say instead of "is to be opened"?
You can use alternatives like "will be opened", "is scheduled to open", or "is set to open" depending on the context.
Is "is to be opened" formal or informal?
"Is to be opened" is generally considered a more formal way of expressing a future event. In informal contexts, phrases like "will open" or "is going to open" might be more appropriate.
What's the difference between "is to be opened" and "will be opened"?
"Is to be opened" often implies a plan or arrangement is in place, whereas "will be opened" simply indicates a future event without necessarily implying prior planning. The choice depends on whether you want to emphasize the planned nature of the event.
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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
90%
Authority and reliability
4.5/5
Expert rating
Real-world application tested