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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
during a certain period
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "during a certain period" is correct and can be used in written English.
It is a way to refer to a span of time in the past or present. For example, "Over the last ten years, there has been a decline in the number of businesses in the area during a certain period."
✓ Grammatically correct
Science
News & Media
Academia
Alternative expressions(3)
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
59 human-written examples
You could say it's more European during a certain period.
News & Media
Whether actualized or not, these possibilities continue during a certain period of time.
Encyclopedias
How many human connections did they enable to take place during a certain period?
News & Media
One path is to buy put options, which give you the right to sell a stock at a specified price during a certain period.
News & Media
Options confer the right to buy or sell a specific security, such as a stock or bond, for a fixed price during a certain period.
News & Media
They found that during a certain period, the entire developing egg spins several times around what will later becomes its long axis.
These genes were presumably not lost during evolution but might have been "switched off" during a certain period of time and "switched on" again at some later point.
Science
The state contended that she owed taxes as a resident because she spent most of her time there during a certain period; she said she was not a New York resident.
News & Media
For instance, when a police agency asks for a cell tower "dump" for data on subscribers who were near a tower during a certain period of time, it may get back hundreds or even thousands of names.
News & Media
They are structured in a way through which the company (with its cash flows) repays shareholders during a certain period of time until either the shareholder obtains an agreed upon return, or the schedule of repayments ends.
Academia
Human-verified similar examples from authoritative sources
Similar Expressions
1 human-written examples
LIM is a non-interventional prospective observational cohort that follows users of certain drugs during a certain period of time.
Expert writing Tips
Best practice
When using "during a certain period", ensure the context clarifies what period you are referring to. If not immediately obvious, specify the period explicitly to avoid ambiguity.
Common error
Avoid using "during a certain period" without providing enough context. Ensure the reader understands what timeframe you are referring to. If the time period is unclear, consider providing specific dates or events to clarify the temporal context.
Source & Trust
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "during a certain period" functions as a prepositional phrase modifying a verb or noun, indicating when an action occurred or a state existed. Ludwig AI confirms this is correct and usable in written English.
Frequent in
Science
39%
News & Media
32%
Academia
13%
Less common in
Formal & Business
8%
Encyclopedias
3%
Wiki
2%
Ludwig's WRAP-UP
The phrase "during a certain period" is a versatile prepositional phrase used to specify when an action or event occurred. Ludwig AI affirms its grammatical correctness and widespread usability in written English. It's frequently used across various domains, including science, news, and academia, but care should be taken to clarify the specific timeframe, as ambiguity can arise if the context is not clear. Alternatives such as "for a specific duration" or "over a defined timeframe" can add precision. When writing, ensure the surrounding context provides sufficient clues about the period being referenced.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
for a specific duration
Focuses on the length of time, emphasizing the duration.
over a defined timeframe
Highlights that the timeframe is clearly established or known.
within a particular time span
Emphasizes the limits or boundaries of the time.
in a given interval
Uses more technical or formal language.
during a set time
Focuses on the time being pre-arranged or determined.
for a limited time
Highlights that the time is not extensive.
throughout a phase
Implies a distinct stage or part of a process.
in a specific window
Suggests a focused or narrow timeframe.
while in that timeframe
Adds extra emphasis on time.
for a season
Specifies a longer timeframe or pattern.
FAQs
How can I use "during a certain period" in a sentence?
Use "during a certain period" to refer to a specific, though possibly unspecified, timeframe within which an event occurs. For example, "Sales increased /s/considerably during a certain period considerably", or "Symptoms worsened /s/markedly during a certain period markedly".
What are some alternatives to saying "during a certain period"?
You can use alternatives like "for a specific duration", "over a defined timeframe", or "within a particular time span" depending on the context.
Is it better to specify the exact time frame instead of using "during a certain period"?
While "during a certain period" is grammatically correct, specifying the exact time frame (e.g., "during the summer of 2024" or "between January and March") provides greater clarity and precision. Whether to use the phrase depends on the level of detail needed.
What's the difference between "during a certain period" and "at a certain time"?
"During a certain period" refers to a span of time, while "at a certain time" refers to a specific point in time. For instance, "The factory was closed /s/during+a+certain+period during a certain period due to renovations", versus "The meeting starts /s/at+a+certain+time at a certain time".
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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
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested