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
once the task is completed
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "once the task is completed" is grammatically correct and commonly used in written English.
It is often used to indicate a condition or event that will happen after a certain action is completed. Example: Once the task is completed, the team can take a break and celebrate their hard work.
✓ Grammatically correct
News & Media
Science
Wiki
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
5 human-written examples
"Once the task is completed – which I expect to be soon – if there is any doubt at all regarding the enrolments, I will take further steps, including, if necessary, referral to the AFP".
News & Media
Once the task is completed, it should give an indication that the task was done successfully.
News & Media
Simply describe your task, name your price or request a bid, get a "TaskRabbit," and once the task is completed to your quality standard, pay your dues.
News & Media
However, while they execute the task, participants in the prospective condition are aware that a time judgment will be required; on the other hand, participants in the retrospective condition are informed of this additional requirement only once the task is completed.
Science
DOI: http://dx.doi.org/10.7554/eLife.02938.002 Persistence in performing a goal-orientated behavior must be balanced by behavioral termination cues once the task is completed.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
55 human-written examples
The Modified Dyspnoea Borg Scale data were again recorded immediately once the task was completed.
Make it a rule to immediately delete lists once the tasks are completed or items purchased.
Wiki
Once the map task is completed and reported back to the server, each mapper's address is stored in the VMR server's database.
Once the first task is completed, both groups are asked to complete a second task that requires some effort — solving complex anagrams, for example, or turning down free beer knowing that a driving test will follow.
News & Media
Once initiated, each of the tasks was completed through auditory plus vocal system interactions.
Once this task was completed, we were allowed into Club 21 where we then received another birthday cheque to spend on ourselves.
News & Media
Expert writing Tips
Best practice
Use "once the task is completed" to clearly indicate a sequence of events, where one action must finish before another begins. This improves clarity and avoids ambiguity.
Common error
Avoid using future tenses in the main clause when "once the task is completed" is in the subordinate clause; instead, use the present tense or 'will' + base form. Incorrect: "Once the task is completed, we will have started the next phase." Correct: "Once the task is completed, we will start the next phase."
Source & Trust
80%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "once the task is completed" functions as an adverbial clause of time, modifying the main clause by indicating when the action in the main clause will occur. It establishes a temporal relationship, dependent on the completion of the task. As Ludwig AI shows, it’s often used to set a condition for a subsequent event.
Frequent in
News & Media
33%
Science
46%
Wiki
21%
Less common in
Formal & Business
0%
Encyclopedias
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, "once the task is completed" serves as a temporal clause indicating that a subsequent action will occur after a specific task is finished. Ludwig AI confirms that the phrase is grammatically correct and commonly used. It functions primarily to clarify the sequence of events and dependencies. Usage is common across news, scientific and general contexts with the most frequent usage in scientific publications. When using the phrase, ensure to use correct verb tenses in the main clause, and consider more formal alternatives like "upon completion of the task" for professional writing.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
after the task is completed
Changes the leading word to "after", focusing directly on the time following completion.
when the task is completed
Replaces "once" with "when", indicating a time-based condition.
upon completion of the task
Uses a more formal structure with "upon completion", emphasizing the moment of finishing.
as soon as the task is completed
Adds urgency with "as soon as", highlighting immediacy after completion.
following the task's completion
Employs a possessive structure emphasizing the task's state of being finished.
subsequent to completing the task
Uses a more formal and less common phrasing.
with the task completed
Uses a participial phrase indicating the task is in a finished state.
the moment the task is completed
Highlights a specific point in time immediately after the task's end.
on the task being completed
A more stylised way to say that something happens in the instant of task completion.
after finishing the task
Focuses on the action of finishing, rather than the state of being completed.
FAQs
How can I rephrase "once the task is completed" to sound more formal?
For a more formal tone, consider using phrases such as "upon completion of the task" or "subsequent to completing the task". These options add a layer of professionalism to your writing.
Is it grammatically correct to say "once the task will be completed"?
No, it is generally incorrect. The proper phrasing is "once the task is completed". The 'once' clause typically uses the present simple tense to refer to a future event.
What's the difference between "after the task is completed" and "once the task is completed"?
Both phrases are very similar. "After the task is completed" simply indicates a time sequence, while "once the task is completed" often implies a condition or trigger for a subsequent action.
Can I use "once the task is completed" at the beginning of a sentence?
Yes, it's perfectly acceptable to start a sentence with "once the task is completed". Just ensure that the following clause makes sense in relation to the completion of the task, for example: "Once the task is completed, the team can proceed to the next phase".
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
80%
Authority and reliability
4.5/5
Expert rating
Real-world application tested