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Justyna Jupowicz-Kozak quote

Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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every two hour

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "every two hour" is not correct; it should be "every two hours." You can use it to describe an action or event that occurs at two-hour intervals.
Example: "The bus arrives every two hours, so plan your trip accordingly."

⚠ May contain grammatical issues

News & Media

Science

Wiki

Human-verified examples from authoritative sources

Exact Expressions

1 human-written examples

In every two hour segment, you can only check your phone once.

News & Media

Huffington Post

Human-verified similar examples from authoritative sources

Similar Expressions

58 human-written examples

"I was getting hungry every two hours.

News & Media

The New York Times

That soon became four every two hours.

Other services run every two hours.

I was stooling almost every two hours.

News & Media

The Guardian

"That's easily every two hours".

"It keeps changing every two hours, every three hours," said Shailendra Panchal, 26, an Avalon Cove resident.

News & Media

The New York Times

That's right: food kills one person every two hours.

News & Media

The New York Times

And every two hours from then you eat something.

News & Media

The New York Times

Remember to put on sunscreen every two hours.

News & Media

The New York Times

He required attention every two hours, even through the night.

Show more...

Expert writing Tips

Best practice

Always use the grammatically correct form, "every two hours", when describing events that occur at two-hour intervals. This ensures clarity and avoids misinterpretation.

Common error

Resist the temptation to omit the 's' in "hours". The phrase "every two hour" is incorrect. Remember that you're referring to multiple instances of the two-hour period, thus requiring the plural form.

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

2.8/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "every two hour" functions as an adverbial modifier intending to specify frequency or interval. As Ludwig AI points out, it's grammatically incorrect. The correct form, "every two hours", modifies a verb by indicating how often an action occurs.

Expression frequency: Rare

Frequent in

News & Media

30%

Science

30%

Wiki

20%

Less common in

Formal & Business

10%

Reference

5%

Social Media

5%

Ludwig's WRAP-UP

In summary, while the phrase "every two hour" might seem straightforward, it's grammatically incorrect. The proper form is "every two hours", indicating events occurring at intervals of two hours. Ludwig AI highlights the grammatical error. To ensure clarity and correctness in your writing, remember to use the plural form "hours". When aiming for more formal language, consider alternatives like "at two-hour intervals". By avoiding the common mistake of omitting the 's', you can communicate your intended meaning effectively across various contexts, from news reports to scientific studies.

FAQs

How do I properly use "every two hours" in a sentence?

The correct phrase is "every two hours", with the plural "hours". For example: "The medication should be taken "every two hours"."

What is a more formal alternative to "every two hours"?

A more formal way to express "every two hours" is "at two-hour intervals" or "at intervals of two hours". For example: "Measurements were taken "at two-hour intervals"."

Is there a difference between "every two hours" and "every other hour"?

"Every two hours" means something happens consistently at intervals of two hours. "Every other hour" implies something happens, then an hour is skipped, then it happens again. They are not interchangeable.

Can I use "bi-hourly" instead of "every two hours"?

"Bi-hourly" is a valid alternative, although it can sometimes be ambiguous and confused with "twice an hour." To avoid confusion, using "every two hours" is clearer.

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Source & Trust

80%

Authority and reliability

2.8/5

Expert rating

Real-world application tested

Most frequent sentences: