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
every three courses
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "every three courses" is correct and usable in written English.
It can be used to indicate a frequency or occurrence related to a set of three courses, such as in a meal or an academic curriculum. Example: "The restaurant offers a special dessert every three courses to enhance the dining experience."
✓ Grammatically correct
Science
News & Media
Wiki
Alternative expressions(5)
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
5 human-written examples
Assessment was performed every three courses.
Science
A computed tomography scan was repeated every three courses to assess the objective response.
Science
Patients were monitored for neurotoxicity every three courses with full neurological examination, electroneurography, electromiography and somatosensorial evoked potentials.
Science
Restaging was planned every three courses of chemotherapy: all target lesions were reassessed with the same method used on study entry according to WHO criteria (Miller et al, 1981).
Science
Even if activity was not the end point of the phase I part of the study, considering the fact that all patients enrolled were chemotherapy naïve, responses were assessed, with the same criteria of phase II, every three courses of treatment.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
55 human-written examples
Antitumour activity was evaluated every two courses (i.e. 6 weeks) on all measurable lesions.
Science
The evaluation was repeated every two courses, or more frequently in patients with clinically suspected progression.
Science
Tumour response was assessed every two courses using the Response Evaluation Criteria in Solid Tumors (RECIST).
Science
CT scanning was performed prior to study entry, after every two courses and 4 6 weeks after the last treatment.
Science
CT scans were repeated to evaluate lesions every two courses, and tumour markers were measured at the same time.
Science
The clinical tumor response was assessed radiologically by computed tomography after every two courses of chemotherapy, according to the Response Evaluation Criteria in Solid Tumors (ver. 1.0) [ 23].
Science
Expert writing Tips
Best practice
When using the phrase "every three courses" in a scientific or medical context, ensure that the term "course" is clearly defined. For example, specify whether a "course" refers to a cycle of chemotherapy, a module in a training program, or a specific set of treatments.
Common error
Avoid assuming that "courses" always refers to academic classes. The term can apply to various sequential treatments or procedures. Clarify the meaning in your specific context to prevent confusion.
Source & Trust
83%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "every three courses" functions primarily as an adverbial phrase of frequency. It modifies a verb by specifying how often an action or event occurs in relation to a set of three courses, as demonstrated by Ludwig AI's examples, especially in medical and academic research.
Frequent in
Science
80%
News & Media
10%
Wiki
10%
Less common in
Formal & Business
0%
Academia
0%
Encyclopedias
0%
Ludwig's WRAP-UP
In summary, the phrase "every three courses" is grammatically sound and primarily used in scientific and medical contexts to indicate the frequency of evaluations or procedures, according to Ludwig AI. While the phrase is correct, it is relatively rare. Ludwig's examples reveal that its register is formal and scientific, suitable for technical writing where precision is key. When using this phrase, ensure that the term "course" is clearly defined to avoid ambiguity, and consider that it's more common to see "every two courses".
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
every third course
Replaces "three" with its ordinal form, slightly altering the phrasing but retaining the meaning.
at intervals of three courses
Emphasizes the interval aspect with a more formal tone.
following each set of three courses
Rephrases the timing to emphasize a set of courses rather than individual ones.
after every two courses
Changes the interval to every two courses, altering the frequency.
every set of three treatments
Replaces "courses" with "treatments", suitable for medical contexts.
every three segments of the course
Substitutes "courses" with "segments", which might apply in a specific academic context.
every three units of study
Replaces "courses" with "units of study", relevant in educational settings.
in three-course increments
Focuses on the increment size rather than the frequency of occurrence.
following three modules
Substitutes "courses" with "modules", often used in educational or training programs.
at the completion of every three stages
Changes "courses" to "stages", appropriate in contexts involving phased processes.
FAQs
How can I use "every three courses" in a sentence?
You can use "every three courses" to indicate a frequency of evaluation or assessment, particularly in medical or academic contexts. For example: "Restaging was planned "every three courses" of chemotherapy".
What is the difference between "every three courses" and "every third course"?
"Every three courses" specifies an interval of three courses, whereas "every third course" refers to a specific course in a sequence (e.g., the 3rd, 6th, 9th course). The former defines a frequency, and the latter refers to a specific item.
Which is more appropriate, "every three courses" or "after every three courses"?
Both "every three courses" and "after every three courses" are grammatically correct and often interchangeable. However, "after "every three courses"" might be more precise when emphasizing the timing of an event in relation to the completion of the three courses.
What alternatives can I use instead of "every three courses"?
Depending on the context, you might use alternatives like "every three sessions", "every three cycles", or "at intervals of three courses".
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
83%
Authority and reliability
4.1/5
Expert rating
Real-world application tested