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Justyna Jupowicz-Kozak quote

Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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that's the key

Grammar usage guide and real-world examples

USAGE SUMMARY

"That's the key" is a correct and usable phrase in written English.
You can use it when you want to emphasize the importance of something or to draw attention to a point. For example: "Finding a way to motivate the team is essential - that's the key."

✓ Grammatically correct

News & Media

Human-verified examples from authoritative sources

Exact Expressions

58 human-written examples

Adaptability, that's the key.

That's the key to Bloomberg's success.

News & Media

The New Yorker

That's the key thing".

That's the key.

That's the key point.

News & Media

Independent

"That's the key test".

That's the key question".

News & Media

The New York Times

"That's the key intervention point.

"That's the key to it.

That's the key piece there".

News & Media

The New York Times

"That's the key benefit.

News & Media

The New York Times
Show more...

Expert writing Tips

Best practice

When using "that's the key", ensure the context clearly establishes what "that" refers to. Ambiguity can weaken the impact of your statement. For example, instead of saying "Adaptability, that's the key", you could say "Adaptability is the key to success in a rapidly changing environment."

Common error

Avoid using "that's the key" excessively in formal writing or presentations. While the phrase is grammatically correct, overuse can make your writing sound repetitive or simplistic. Consider using more sophisticated synonyms like "the crucial element" or "the pivotal factor" to maintain a professional tone.

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

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

89%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "that's the key" functions as a sentence fragment or a short declarative statement used to emphasize the crucial element or point being discussed. Ludwig AI confirms this usage is prevalent across various contexts, highlighting its role in drawing attention to significant details.

Expression frequency: Very common

Frequent in

News & Media

98%

Formal & Business

1%

Science

1%

Less common in

Wiki

0%

Encyclopedias

0%

Reference

0%

Ludwig's WRAP-UP

In summary, "that's the key" is a grammatically sound and frequently used phrase that serves to emphasize a crucial element or point. Ludwig AI affirms its widespread applicability across various contexts. It functions as a short declarative statement, guiding attention to significant details. While versatile, it's essential to ensure the context clearly defines what "that" refers to, and overusing it in formal settings should be avoided. Numerous alternatives, such as "that's the crux" or "that's the essential point", can add variety to your writing.

FAQs

How can I use "that's the key" in a sentence?

You can use "that's the key" to highlight the most important aspect of something. For instance, "Understanding the customer's needs; "that's the key" to successful marketing".

What are some alternatives to saying "that's the key"?

Alternatives include phrases like "that's the crux", "that's the essential point", or "that's the critical factor", depending on the context.

Is it grammatically correct to say "that's the key"?

Yes, "that's the key" is grammatically correct and widely used in spoken and written English to emphasize a crucial element or point.

What is the difference between "that's the key" and "that's the main point"?

"That's the key" emphasizes the crucial element needed for success or understanding, while "that's the main point" simply highlights the central idea being discussed. The former implies more importance or necessity.

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Source & Trust

89%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Most frequent sentences: