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 quote

Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

MitStanfordHarvardAustralian Nationa UniversityNanyangOxford

at different occasions

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "at different occasions" is not correct in standard written English.
The correct expression is "on different occasions." Example: "I have met her on different occasions throughout the year."

⚠ May contain grammatical issues

Science

Wiki

Human-verified examples from authoritative sources

Exact Expressions

31 human-written examples

This is because the prn values of referents are not synchronized between agents: agents may encounter the same referent at different occasions, and the number of coreferent items may differ between agents.

They consist of several affine dynamic subsystems, between which switchings occur at different occasions.

The above stated results demonstrate that, by controlling the size of WO3 nanorods, the electrochromic properties can be easily adjusted, especially the response time, indicating potential values for different response time required at different occasions.

We have analysed several gene control data sets of Enchytraeus albidus comparing standard control test conditions, i.e. (1) from experiments performed at different occasions in time, (2) to culture media, (3) to acetone control, (4) from exposure time series (2, 4 and 8 days) and (5) between replicates.

Refractory period of variable duration (1 10 min) was observed at different occasions.

Data were collected at different occasions during 2014 and 2015 with a focus on the leading practices of these 15 middle leaders.

Show more...

Human-verified similar examples from authoritative sources

Similar Expressions

29 human-written examples

All the radiographs were assessed by two examiners at two different occasions at an interval of at least a week to check the intraexaminer and interexaminer reliability.

There were 1,709 incident cases of T2DM identified over 320,703 person-years of follow up, from national registries requiring a physician's diagnosis, according to the criteria of FPG ≥7.0 mmol/L, fasting whole blood glucose ≥6.1 mmol/L measured at two different occasions, or at least two HbA1C values >6.0%.

Samples were taken at four different occasions, before intervention at -3 weeks, during intervention at two time points, 0 and 6 weeks, and after intervention at 24 weeks.

To evaluate precision and accuracy, QC samples were analysed within runs (intra-run validation) at 10 replicate analyses and between runs (inter-run validation) at 10 different occasions.

This assay was performed in duplicate at four different occasions.

Show more...

Expert writing Tips

Best practice

Although commonly used, prefer the grammatically correct phrase "on different occasions". While "at different occasions" appears in various sources, using "on" aligns with standard English.

Common error

Avoid using "at" before "different occasions"; the correct preposition is "on". For example, write "I saw her on different occasions", not "at different occasions".

Antonio Rotolo, PhD - Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

77%

Authority and reliability

3.5/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "at different occasions" functions as an adverbial phrase, modifying a verb by specifying when an action takes place. Although Ludwig AI suggests the standard form is "on different occasions", the phrase aims to provide temporal context.

Expression frequency: Common

Frequent in

Science

80%

Wiki

10%

Academia

5%

Less common in

News & Media

2%

Formal & Business

1%

Reference

2%

Ludwig's WRAP-UP

In summary, while "at different occasions" is a frequently used phrase to indicate events happening more than once, Ludwig AI identifies it as grammatically incorrect, suggesting "on different occasions" is the standard form. The phrase appears most commonly in scientific and academic contexts, although its presence on general websites indicates broader informal usage. It's best practice to use the grammatically correct "on different occasions" in formal writing. Alternatives such as "on various occasions" or "at various times" can also be considered.

FAQs

Is it grammatically correct to say "at different occasions"?

No, the grammatically correct phrase is "on different occasions". While "at different occasions" is sometimes used, it's not considered standard English.

What preposition should I use with "different occasions"?

The correct preposition to use with "different occasions" is "on", as in "on different occasions".

What can I say instead of "at different occasions"?

You can use alternatives like "on various occasions", "at various times", or "on separate occasions".

Which is correct, "at different occasions" or "on different occasions"?

"On different occasions" is the correct and preferred phrase. "At different occasions" is considered grammatically incorrect.

ChatGPT power + Grammarly precisionChatGPT power + Grammarly precision
ChatGPT + Grammarly

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.

Source & Trust

77%

Authority and reliability

3.5/5

Expert rating

Real-world application tested

Most frequent sentences: