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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
Three decades ago
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "Three decades ago" is correct and usable in written English.
It can be used to refer to a time period that is thirty years in the past. Example: "Three decades ago, the world was a very different place, with technology and culture evolving rapidly."
✓ Grammatically correct
Science
News & Media
Formal & Business
Alternative expressions(20)
three decades ago
three decades
it has been three decades
decades ago
several decades ago
in the past three decades
two decades ago
some decades ago
three decades old
few decades ago
for the past three decades
Several decades ago
just decades ago
a handful of decades ago
for three decades now
were three weeks ago
in the last three decades
during three decades
a couple decades ago
spanning three decades
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified similar examples from authoritative sources
Similar Expressions
60 human-written examples
More than 9,000 women were involved originally, and were divided into three groups.
News & Media
What happened four months ago is forgotten, whether that's good, bad or indifferent.
News & Media
"They gave me their word a year ago and now I want them to honour that.
News & Media
"It's only what happened a couple of weeks ago or next week that matters.
News & Media
Specifically, the Nasdaq excludes anyone who was employed the company in the past three years.
News & Media
Since last July the state has opted to use just one massive dose of the sedative pentobarbital as its lethal injection, instead of a cocktail of three different drugs.
News & Media
"Five years ago I stood here and said we had made history here in Brighton," Lucas said to loud cheers inside the Brighton Centre conference venue.
News & Media
The shares have underperformed the market by 6% in the last three months and now trade at a discount to the oil service peers.
News & Media
Behind this summer's heat are greenhouse gases emitted decades ago.
News & Media
Congress is currently considering a bill increasing the minimum wage to $10.10 over the next three years.
News & Media
But the fact that more than fifteen per cent of personal consumption expenditures now go to medical care, when in 1930 only three per cent of personal consumption did, isn't a reflection of frivolity, and that's not going to change any time soon.
News & Media
Expert writing Tips
Best practice
Use "three decades ago" to provide historical context, grounding current events in a relatable timeframe. For instance, "Three decades ago, the internet was in its infancy, and now it dominates global communication."
Common error
Avoid using "three decades ago" when you actually mean a different time frame. For example, don't use it if you are referring to a period of 20 or 40 years; use the specific number of years or a more general term like "many years ago".
Source & Trust
60%
Authority and reliability
3.5/5
Expert rating
Real-world application tested
Linguistic Context
"Three decades ago" functions as an adverbial phrase of time, specifying when something occurred. It pinpoints a period approximately thirty years prior to the present, providing temporal context.
Frequent in
Science
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News & Media
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Formal & Business
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Less common in
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Ludwig's WRAP-UP
In summary, "three decades ago" is a grammatically sound and clear way to refer to a time period approximately thirty years in the past. Ludwig AI indicates the phrase is correct but there are no examples provided in the data. While "thirty years ago" offers a more direct alternative, "three decades ago" provides a slightly broader sense of historical context. It's important to use the phrase accurately, ensuring it aligns with the intended timeframe to avoid confusion. Alternative phrases like "in the past thirty years" can also be useful for adding variety to your writing.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
Thirty years ago
Directly specifies the thirty-year period without additional context.
In the past thirty years
Emphasizes the span of thirty years leading up to the present.
Approximately thirty years prior
Uses "prior" to indicate the time frame is before the present.
Three decades in the past
Explicitly states the time is in the past.
Around thirty years back
Uses "back" to denote a time in the past, maintaining an informal tone.
Thirty years in the previous century
Highlights the position of the thirty-year period within the past century.
In the last three decades
Emphasizes the duration of the period.
About three decades since
Focuses on the elapsed time 'since' a past event.
Roughly thirty years earlier
Uses 'earlier' to denote a time before the present moment.
A generation ago
Refers to a time period roughly equivalent to the length of a generation, which is about thirty years.
FAQs
How can I use "three decades ago" in a sentence?
Use "three decades ago" to set a point in time approximately thirty years in the past, such as, "Three decades ago, personal computers were not as ubiquitous as they are today."
What is a more formal way to say "three decades ago"?
A more formal alternative to "three decades ago" could be "in the past thirty years" or "over the course of three decades". These alternatives provide a similar meaning but in a slightly more formal tone.
Is it better to say "three decades ago" or "thirty years ago"?
Both "three decades ago" and "thirty years ago" are correct. The choice depends on the context and desired tone. "Thirty years ago" is more direct, while "three decades ago" can add a sense of historical perspective.
What's the difference between "a few decades ago" and "three decades ago"?
"A few decades ago" refers to an unspecified number of decades, usually more than two, indicating a general period in the past. "Three decades ago" specifically means thirty years in the past.
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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
60%
Authority and reliability
3.5/5
Expert rating
Real-world application tested