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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

the key is

Grammar usage guide and real-world examples

USAGE SUMMARY

The part of a sentence "the key is" is correct and usable in written English.
You can use it when introducing a solution or piece of advice. For example: "The key is to remain positive no matter what life throws at you."

✓ Grammatically correct

News & Media

Wiki

Formal & Business

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

The key is exercise.

News & Media

The New York Times

The key is consistency.

News & Media

The New York Times

"The key is story.

News & Media

The New York Times

The key is time.

News & Media

The New York Times

"The key is consumption.

News & Media

The New York Times

The key is tempo.

News & Media

The New York Times

"The key is the fastball".

The key is 'match-winning'.

The key is early diagnosis.

News & Media

The Guardian

But the key is running.

News & Media

The New York Times

"The key is emotional truth.

News & Media

Independent
Show more...

Expert writing Tips

Best practice

Use "the key is" to clearly and directly introduce the most important factor or solution in a discussion or explanation. It helps focus the reader's attention on the core element.

Common error

Avoid starting multiple consecutive sentences with "the key is" as it can sound repetitive and monotonous. Vary your sentence structure by using synonyms like "the crucial point is" or rephrasing the sentence entirely.

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

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

81%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "the key is" functions as a transitional phrase and a sentence introducer. It serves to highlight the most important element, solution, or factor in a discussion. As Ludwig AI confirms, it is a valid and frequently used construction in English. Ludwig shows many examples of this.

Expression frequency: Very common

Frequent in

News & Media

48%

Wiki

20%

Formal & Business

7%

Less common in

Science

7%

Reference

0%

Encyclopedias

0%

Ludwig's WRAP-UP

In summary, "the key is" is a grammatically correct and widely used phrase that functions as a sentence introducer to emphasize the most important element in a discussion. As confirmed by Ludwig AI, it’s a common construction, particularly in News & Media sources, Wiki, and Formal & Business contexts. To avoid repetition, consider using synonyms like "the most important thing is" or "the crucial point is". Remember to maintain a neutral tone and use the phrase judiciously to enhance clarity and focus. The provided examples via Ludwig show its versatile application across different writing styles.

FAQs

How can I use "the key is" in a sentence?

You can use "the key is" to introduce the most important factor or solution in a given situation. For example, "The key is patience" when learning a new skill.

What are some alternatives to saying "the key is"?

Alternatives include phrases like "the most important thing is", "the crucial point is", or "the secret lies in" depending on the context.

Is it grammatically correct to start a sentence with "the key is"?

Yes, it is grammatically correct to start a sentence with "the key is". It's a common and accepted way to emphasize a central point.

How can I avoid overusing "the key is" in my writing?

To prevent overuse, try to vary your sentence structure by using alternative phrases or rephrasing your sentences to directly state the key factor without using the phrase. For instance, instead of "The key is practice", you could say "Practice is essential".

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Source & Trust

81%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Most frequent sentences: