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

five of days

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "five of days" is not correct in English.
It seems to be an incorrect construction and does not convey a clear meaning. An example could be: "I spent five of days at the beach," but it should be corrected to "five days."

⚠ May contain grammatical issues

News & Media

Science

Wiki

Human-verified examples from authoritative sources

Exact Expressions

1 human-written examples

For example a recent freedom of information request to a Russell Group university showed that one in five of days lost to sickness were due to stress or mental health issues.

News & Media

The Guardian

Human-verified similar examples from authoritative sources

Similar Expressions

59 human-written examples

On that figure, we have two of days in one window.

Four periods of six to seven days of fieldwork were conducted within the Baft region.

Four periods of six to seven days of fieldwork were conducted within Baft region.

Getting to the gym four out of seven days of the week is palatable.

News & Media

Huffington Post

Ninety percent of day traders are unsuccessful.

Five days of drizzle followed by one day of sun.

News & Media

The New Yorker

It was one of those days.

"It's one of your days.

News & Media

The New Yorker

"One of these days," the crowd answered.

News & Media

The New Yorker

This is just one of those days.

News & Media

The New York Times
Show more...

Expert writing Tips

Best practice

Always use "five days" instead of "five of days" for grammatically correct English. It is the standard way to express a duration of five days.

Common error

Avoid using "of" between a number and "days" when specifying a duration. Saying "five of days" is not standard English; instead, use the correct phrase "five days".

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

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

80%

Authority and reliability

2.2/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "five of days" is grammatically incorrect and does not function properly in English sentences. Ludwig AI flags it as incorrect. A correct expression would be "five days", functioning as a noun phrase modifying another noun or serving as an adverbial of duration.

Expression frequency: Rare

Frequent in

News & Media

33%

Science

33%

Wiki

33%

Less common in

Formal & Business

0%

Encyclopedias

0%

Social Media

0%

Ludwig's WRAP-UP

In summary, the phrase "five of days" is grammatically incorrect and should be avoided in formal writing. The correct form is "five days". As Ludwig AI points out, the phrase represents an incorrect construction. While there are a few examples available, they likely represent errors or non-standard usage. The phrase's intended purpose is to indicate a duration of time, but the incorrect grammar hinders effective communication. Correct alternatives include "five days", "a five-day period", and "a period of five days".

FAQs

How do I correctly use "five days" in a sentence?

Use "five days" directly before or after the noun it modifies. For example, "The project will take "five days" to complete" or "It's a "five days" journey".

What's the difference between "five days" and "a period of five days"?

"Five days" is a more concise and common way to express a duration. "A period of five days" is more formal and emphasizes the specified time frame.

Is "five-day" grammatically correct?

Yes, "five-day" is correct when used as an adjective before a noun, like in "a "five-day" trip". It functions as a compound adjective describing the noun.

Can I use "five days'" to show possession?

Yes, you can use "five days'" to indicate something that belongs to or is associated with a period of five days. For example, "five days' worth of work".

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

80%

Authority and reliability

2.2/5

Expert rating

Real-world application tested

Most frequent sentences: