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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
in those days
Grammar usage guide and real-world examplesUSAGE SUMMARY
"in those days" is correct and usable in written English.
You can use it to refer to a specific period of time in the past. For example: "In those days, cars were not very common."
✓ Grammatically correct
News & Media
Academia
Alternative expressions(20)
in that era
back then
in former times
in the past
in bygone days
at that time
during that period
in those years
in earlier times
in previous times
is equivalent to
in the wishes of
rapidly thereafter
for the immediate future
Very soon
somewhere later
one week before
at the early time
in the next weeks
during the previous 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
60 human-written examples
In those days, it was.
News & Media
You didn't in those days.
News & Media
No cars in those days, man.
News & Media
In those days, Palestine was predominantly Arab.
News & Media
In those days, we had illusions".
News & Media
They were totally unorganized in those days.
News & Media
Hollywood was like that in those days.
News & Media
"In those days I was handsome.
News & Media
There were deer everywhere in those days".
News & Media
People looked after things in those days.
News & Media
Decisions were shorter in those days.
News & Media
Expert writing Tips
Best practice
Consider the tone of your writing. "In those days" can evoke a sense of nostalgia or historical distance, so use it appropriately for the intended effect.
Common error
Don't assume your audience shares your understanding of "those days". Provide enough context so readers from different backgrounds can easily grasp the timeframe you're discussing.
Source & Trust
88%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "in those days" primarily functions as an adverbial phrase modifying a verb or clause. According to Ludwig AI, the expression is correct and usable in written English. Examples from Ludwig show it is used to specify when a particular situation or event occurred in the past.
Frequent in
News & Media
58%
Academia
18%
Wiki
3%
Less common in
Science
12%
Formal & Business
5%
Reference
4%
Ludwig's WRAP-UP
In summary, "in those days" is a versatile phrase used to denote a specific period in the past. As confirmed by Ludwig AI, it is grammatically correct and frequently employed across various contexts, particularly in news, media, and academic writing. To enhance clarity, always provide sufficient context when using the phrase and consider the tone of your writing. Alternatives such as "back then" or "in that era" may be more appropriate depending on the desired level of formality. Be sure not to assume your audience has the same understanding of the timeframe you are referencing.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
back then
This alternative is more concise and informal.
at that time
This alternative focuses on a specific moment or period in the past.
in that era
This alternative is slightly more formal and emphasizes a specific period in history.
during that period
This alternative emphasizes a defined duration in the past.
in those years
This alternative specifically refers to a period of several years in the past.
in former times
This alternative is more archaic and literary.
in earlier times
This alternative is similar to "in the past" but emphasizes a time relatively further back.
in previous times
This alternative is slightly more formal than "in earlier times."
in the past
This alternative is a general term for any time before the present.
in bygone days
This alternative evokes a sense of nostalgia and a more distant past.
FAQs
How can I use "in those days" in a sentence?
You can use "in those days" to refer to a specific period in the past. For example, "In those days cars were less common than they are today".
What's a more formal alternative to "in those days"?
A more formal alternative is "in that era", which emphasizes a specific period in history with a slightly more elevated tone.
Is there a difference between "in those days" and "back then"?
While both refer to the past, "back then" is generally more informal and concise, whereas "in those days" can carry a slightly more nostalgic or historical weight.
What are some other phrases similar to "in those days"?
Other similar phrases include "in former times", "in the past", and "in bygone days", each carrying subtle differences in tone and context.
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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
4.6/5
Expert rating
Real-world application tested