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
use to run
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "use to run" is not correct in standard written English.
It should be "used to run" when referring to a past habit or state. Example: "I used to run every morning before work."
⚠ May contain grammatical issues
News & Media
Science
Formal & Business
Academia
Wiki
Alternative expressions(2)
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
He continues: "It produces methane, which we use to run an engine generator.
News & Media
You can also look at how operators source the energy they use to run their camps.
News & Media
H.P. sells the computer servers and storage systems that customers use to run Oracle's database software.
News & Media
Nobody was sure what pace they ought to use to run uphill for so long.
News & Media
Computer Associates, based in Islandia, N.Y., makes software that big companies use to run their computer systems.
News & Media
The word 'crisis' doesn't even begin -" "And an industrial-strength motor, the kind they use to run jackhammers".
News & Media
The second is to possibly come up with cash that United can use to run its day-to-day operations.
News & Media
Instead, he developed a software framework — SpotLight Parking — that garages and valet operators can use to run existing businesses.
News & Media
PPS also provides link-level emission rates, which we are going to use to run very fine scale air quality models to estimate individual exposure to air pollution.
Academia
Companies including banks and airlines pay Micro Focus to extend the life of the computers they use to run their businesses, for example to manage data.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
1 human-written examples
So big, in fact, that they would be of little use to run-of-the-mill hackers.
News & Media
Expert writing Tips
Best practice
When referring to a past habit or state, always use "used to run" instead of "use to run". For example, "I used to run marathons" is correct.
Common error
Avoid omitting the 'd' in "used to" when describing past habits or repeated actions. Omitting the 'd' changes the meaning and makes the sentence grammatically incorrect.
Source & Trust
84%
Authority and reliability
2.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "use to run", while frequently encountered, functions incorrectly as an attempt to describe a past habit or state. Grammatically, it requires the past tense marker '-d' to be correct, thus becoming "used to run". Ludwig AI confirms that "use to run" is not correct in standard written English.
Frequent in
News & Media
38%
Science
24%
Formal & Business
14%
Less common in
Academia
11%
Wiki
8%
Reference
5%
Ludwig's WRAP-UP
The phrase "use to run" is frequently found across various sources, but, as Ludwig AI points out, it's grammatically incorrect. The correct form, "used to run", is used to describe past habits or states. While its intended purpose is clear, the missing 'd' makes the phrase inaccurate. When writing, ensure you use "used to run" to maintain grammatical correctness and clarity. Alternatives like "would run" or "formerly ran" can also be used, depending on the context.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
Used to run
This is the grammatically correct form of the phrase, indicating a past habit or state.
Would run
Indicates a past habit or typical behavior, similar to "used to run".
Formerly ran
Emphasizes that the action of running occurred in the past but is no longer happening.
Previously ran
Similar to "formerly ran", indicating a past action.
Habitually ran
Highlights that the running was a regular habit in the past.
Regularly ran
Indicates that the running occurred frequently in the past.
Ran often
A simpler way to express frequent running in the past.
Was known to run
Suggests a past reputation or characteristic related to running.
Had a habit of running
More explicitly states that running was a habit.
At one time ran
Indicates running occurred at some point in the past.
FAQs
What is the correct way to say "use to run"?
The correct way to express a past habit is to say "used to run". The phrase "use to run" is grammatically incorrect.
How can I use "used to run" in a sentence?
You can use "used to run" to describe something you did regularly in the past but no longer do. For example, "I used to run every morning before work."
What are some alternatives to "used to run"?
Alternatives include "would run", "formerly ran", or "previously ran", depending on the specific nuance you want to convey.
What's the difference between "use to run" and "used to run"?
"Use to run" is grammatically incorrect. "Used to run" is the correct phrase to indicate a past habit or state that is no longer true.
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
84%
Authority and reliability
2.8/5
Expert rating
Real-world application tested