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
I used to study
Grammar usage guide and real-world examplesUSAGE SUMMARY
The sentence "I used to study" is correct and usable in written English.
You can use this sentence to talk about something that you did in the past but no longer do. For example, "I used to study Spanish, but I haven't done so in a while."
✓ Grammatically correct
News & Media
Science
Academia
Alternative expressions(20)
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
"I have now become part of the system I used to study," she said.
News & Media
You are studying in the same classrooms as I used to study.
Academia
I used to study weather and the scandalous beginnings of weather forecasting.
News & Media
I used to study Kevyn Aucoin's book "About Face" when I was a kid.
News & Media
But I was a big fan of Adam And The Ants - I used to study the pictures on the back of this sleeve for hours.
News & Media
This is exactly like when I used to study Latin America in the 1980s: then, it was American and British banks, now it's German and French banks".
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
36 human-written examples
I use to study my dad's old records -- he listened to all those old blues and rock guys.
News & Media
They asked me to be an expert court witness in a First Amendment case, applying to erotic dance the semiotic, socio-linguistic paradigm I had used to study dance in Africa, on school playgrounds and in American theaters.
News & Media
In this study, a heavy oil of 14°API was used to study the effect of the composition of the water phase on wettability alteration in the heavy oil/water/sand system.
The comparison of ε I and M I is generally used to study the localized dielectric relaxations processes from long-range conductivity.
Both τ and τ−1I can be used to study, via Laplace transform representation, the disappearance of chromate ions from the solution.
Science
Expert writing Tips
Best practice
When using "I used to study", ensure you clearly imply or state that this activity is no longer current. This avoids confusion and provides context for your statement.
Common error
Avoid using "I used to study" when the context implies that you still study the subject. Instead, reserve this phrase for activities you have discontinued.
Source & Trust
87%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "I used to study" functions as a statement of past habit or state. It indicates an action (studying) that was performed regularly or continuously in the past but is no longer a current activity. Ludwig AI confirms its usability in written English.
Frequent in
News & Media
32%
Science
28%
Academia
20%
Less common in
Formal & Business
0%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "I used to study" is a phrase used to describe a past habit of studying that is no longer current. Ludwig AI confirms that it's grammatically correct and widely used across various contexts, including news, science and academia. It is a neutral expression, suitable for both formal and informal communication. When using this phrase, ensure clarity by implying or stating that the activity is no longer ongoing, which will make the sentence more precise.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
I formerly studied
Replaces "used to" with "formerly", emphasizing the previous nature of the study.
I once studied
Substitutes "used to" with "once", highlighting a past period of study.
I previously studied
Replaces "used to" with "previously", indicating that the studying happened at an earlier time.
I studied in the past
Rephrases the sentence to explicitly state that the study occurred in the past.
I had studied before
Uses the past perfect tense to indicate the study occurred before a certain point in time.
I have studied in the past
Uses the present perfect tense to relate past studying to the present.
I am a former student of
Changes the structure to focus on the person's past role as a student.
I was once a student of
Similar to "I am a former student of", emphasizing the past student status.
My past studies included
Shifts the focus to the subjects of study rather than the act itself.
I don't study anymore
Expresses the cessation of studying, implying it was a past activity.
FAQs
How do I use "I used to study" in a sentence?
Use "I used to study" to describe an activity that you regularly did in the past but no longer do. For example, "I used to study French, but now I focus on Spanish".
What's the difference between "I used to study" and "I studied"?
"I studied" simply states that you studied something at some point in the past. "I used to study" implies that you studied it regularly for a period of time, but you no longer do so. The phrase "I studied" does not necessarily mean that you have stopped studying now.
What can I say instead of "I used to study"?
You can use alternatives like "I formerly studied", "I once studied", or "I previously studied" depending on the context.
Is it correct to say "I used to studying"?
No, "I used to studying" is grammatically incorrect. The correct form is "I used to study" because "to" is followed by the base form of the verb.
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
4.6/5
Expert rating
Real-world application tested