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
they lasted for
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "they lasted for" is correct and usable in written English.
You can use it to describe the duration of an event, object, or situation. Example: "The fireworks display was spectacular; they lasted for over an hour."
✓ Grammatically correct
News & Media
Science
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
24 human-written examples
Sometimes they lasted for minutes.
News & Media
They lasted for four hundred and fifty years — and then they vanished.
News & Media
The onset of systemic hypotension and bradycardia occurred within 1 min of NnV injection and they lasted for 1 35 min, depending on the NnV doses.
They lasted for three years, during which time he reputedly told Jones she'd never make it as an actress – though she has since denied this.
News & Media
Elsewhere in the Europa League, Northern Ireland's Linfield were unable to hold on to their 1-0 home-leg leagainstnSwedenden's AIK Solna, although they lasted for 56 minutes until Kennedy Igboananike put Solna ahead.
News & Media
They lasted for six years from 2005.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
36 human-written examples
How long do they last for?
News & Media
We devise a simple parameter that represents both the areal extent of polynyas and how long they lasted for each year.
Science & Research
They only lasted for one series, due to ratings dropping to 1.6 million during their tenure.
Wiki
Patient-doctor relationships are generally more trustful when they have lasted for a few years [ 18].
Science
Pseudo steady states were observed, however they lasted only for few minutes and then switched back to 'real' steady states.
Science
Expert writing Tips
Best practice
When describing the length of time something existed or continued, ensure the subject clearly refers to what is being measured by "they lasted for".
Common error
Avoid using "they lasted for" without a clear antecedent. Ensure the reader knows exactly what "they" refers to in order to prevent confusion.
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "they lasted for" functions as a verbal phrase indicating the duration of an event, state, or object. As evidenced by Ludwig, it commonly describes how long something persisted.
Frequent in
News & Media
48%
Science
42%
Formal & Business
5%
Less common in
Encyclopedias
0%
Wiki
3%
Reference
2%
Ludwig's WRAP-UP
In summary, the phrase "they lasted for" is a versatile and grammatically sound way to express duration. As noted by Ludwig AI, its use spans across varied contexts, from formal scientific reports to casual news articles, underlining its widespread applicability. When using this phrase, clarity is key, ensuring the antecedent is easily identifiable. While alternatives exist, "they lasted for" remains a straightforward and effective choice for indicating how long something continued or existed.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
they continued for
Replaces "lasted" with "continued", focusing on the ongoing nature of the duration.
they persisted for
Emphasizes the endurance or resistance over a period of time.
their duration was
Uses a more formal and technical phrasing, highlighting the length of time.
they extended for
Highlights how something spreads out over a period of time.
they spanned
Conveys the idea of covering a specific period, often implying a range or scope.
they existed for
Focuses on the time frame in which something was present or in effect.
they held out for
Implies a struggle or resistance to maintain existence during the specified time.
the period of their existence was
A formal and detailed alternative expressing the time during which something existed.
the timeframe was
A more direct and concise way of indicating the period.
the duration spanned
Focuses on the length of time that the duration covered.
FAQs
How can I use "they lasted for" in a sentence?
Use "they lasted for" to indicate the duration of an event, object, or state. For example, "The negotiations were intense; "they lasted for" several days."
What's a more formal alternative to "they lasted for"?
A more formal alternative could be "their duration was". For example, instead of saying "The study sessions, "they lasted for" three hours", you could say "The duration of the study sessions was three hours".
Is it grammatically correct to say "they lasted during" instead of "they lasted for"?
While "during" indicates when something happened, "for" indicates the duration. "They lasted during" is not standard English. You should use ""they lasted for"" when specifying a period.
What can I say instead of "they lasted for a long time"?
Consider using alternatives such as "they were lengthy", "they were protracted", or "they continued for an extended period" depending on the context.
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
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested