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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 span of three years
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "a span of three years" is correct and usable in written English.
You can use it to describe a duration of time that lasts for three years. Example: "The project was completed over a span of three years, from 2018 to 2021."
✓ Grammatically correct
News & Media
Science
Alternative expressions(20)
three years
a three-year period
over three years
throughout three years
a three-year timeframe
lasting three years
for a three-year duration
spanning three years
in the course of three years
covering three years
a period of three years
a term of three years
a span of three days
three years length
three years old
in three years
over the next three years
three years time
in the coming three years
within three years
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
2 human-written examples
The Rangers (16-22-2-1) have notheefeateDevilsDevils (21-11-8-0) in 21 regular-season gamespan span of three years.
News & Media
Although we had many frustrating debates in the process, the programs I developed with these men led the company going from bankruptcy to the top IPO in 1993 in a span of three years.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
57 human-written examples
The test specimens were tested as simple beams under three-point loadings on a span of 1,800 mm.
The specimen was laid on a universal testing machine of maximum capacity of 250 KN, where the test was conducted under a three-point load system with a span of 1,800 mm.
He had only five victories from May 23 , 2005 to April 30 , 2009 a span of 1,438 days.
News & Media
That was a span of 6,980 games in which the Yankees had at least one hit.
News & Media
Edmonton scored three goals in a span of 10 33 in the second.
News & Media
There is mention of "Bloop," the mysterious "low glugging burp" that can be heard over a span of 3,000 miles.
News & Media
Set in three hotel rooms over a span of 12 years, Donnelly's play follows the fortunes of the ambitious Jason.
News & Media
It has a span of 3,500 feet, stands 250 feet above the water, has four massive cables and eight roadways.
News & Media
QUESTIONER: Gary, how can any commissioner justify canceling two full seasons in a span of eight years in any major sport?
News & Media
Expert writing Tips
Best practice
When describing a project or event's duration, use "a span of three years" to emphasize the entire period from beginning to end.
Common error
Avoid using "a span of three years" when you need to specify the exact start and end dates. Instead, use specific dates or phrases like "from 2022 to 2025".
Source & Trust
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "a span of three years" functions as an adverbial phrase, modifying a verb or clause by specifying a duration of time. It provides context regarding the length of an event, project, or process, as evidenced by Ludwig's examples.
Frequent in
News & Media
50%
Science
50%
Formal & Business
0%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "a span of three years" is a grammatically sound and usable expression to indicate a duration of three years. According to Ludwig, it's suitable for various contexts, particularly in News & Media and Science domains, though its occurrence is relatively rare. While alternatives like "a three-year period" exist, "a span of three years" emphasizes the entire duration from beginning to end. When using this phrase, ensure it clearly describes a continuous period and avoid confusing it with specific start and end dates.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
a three-year period
This alternative uses a more straightforward construction, replacing "span" with "period" and slightly simplifying the phrase.
a duration of three years
This option replaces "span" with "duration", emphasizing the length of time involved.
a three-year timeframe
This alternative replaces "span" with "timeframe", implying a defined period within which events occur.
lasting three years
This alternative directly states the length of the period.
for a three-year duration
This alternative reorders the phrase, emphasizing the continuous nature of the time period.
spanning three years
Using the verb form of "span", this alternative focuses on the act of extending across time.
over three years
This alternative is a more concise way to express a period lasting longer than three years.
a three-year stretch
This alternative uses "stretch" to suggest a continuous and possibly uneventful period of time.
in the course of three years
This option highlights events happening throughout the duration of the three years.
covering three years
This option describes a process or study that extends across three years.
FAQs
How can I use "a span of three years" in a sentence?
You can use "a span of three years" to describe the duration of an event or project, such as "The research project was conducted over "a span of three years"." Alternatively you can write "The research project lasted "three years"".
What's a more formal way to say "a span of three years"?
For a more formal tone, consider using "a three-year period" or "a duration of three years".
Is there a difference between "a span of three years" and "for three years"?
"A span of three years" emphasizes the continuous period from start to finish, while "for three years" simply indicates the length of time. The difference is subtle but "a span of three years" might stress the entire timeframe more.
What are some alternatives to "a span of three years" in scientific writing?
In scientific writing, you can use phrases like "over three years", "during a three-year period", or "throughout three years" to maintain a formal and precise tone.
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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
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested