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Justyna Jupowicz-Kozak quote

Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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you must know

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "you must know" is correct and usable in written English.
It can be used to emphasize the importance of a piece of information that the speaker believes the listener should be aware of. Example: "Before we proceed with the project, you must know the deadlines and requirements to ensure everything runs smoothly."

✓ Grammatically correct

News & Media

Academia

Wiki

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

"You must know that".

News & Media

The New Yorker

You must know Mrs Carter?

News & Media

Independent

This you must know.

You must know that already.

You must know Norman Shrapnel".

News & Media

The Guardian

You must know the answer".

News & Media

The Guardian

You must know about him".

You must know where they lead.

News & Media

The New Yorker

(It's Philip, if you must know).

You must know how the sport works".

It's hideous, if you must know.

News & Media

The New York Times
Show more...

Expert writing Tips

Best practice

Use "you must know" to emphasize information that is crucial for your audience to understand, especially when setting context or explaining underlying assumptions.

Common error

Avoid using "you must know" excessively, as it can come across as condescending or patronizing. Vary your language by using alternatives like "it's important to understand" or "bear in mind that" to maintain a respectful tone.

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

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

83%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "you must know" primarily functions as a directive, urging the listener or reader to acknowledge a piece of information deemed essential by the speaker. As seen in Ludwig examples, the phrase introduces context, background, or prerequisite knowledge. Ludwig AI confirms it is correct.

Expression frequency: Very common

Frequent in

News & Media

52%

Wiki

23%

Academia

13%

Less common in

Science

7%

Formal & Business

4%

Reference

1%

Ludwig's WRAP-UP

The phrase "you must know" is a grammatically sound and frequently used expression to emphasize the importance of a piece of information. As Ludwig AI confirms, the phrase is suitable across varied contexts but predominantly appears in News & Media, Wiki, and Academic sources. While versatile, it’s crucial to avoid overuse to prevent sounding condescending; alternatives like "it's important to understand" offer a softer approach. Remember to use this phrase to highlight essential details or prerequisites, ensuring clarity and comprehension in your communication.

FAQs

How can I use "you must know" in a sentence?

You can use "you must know" to emphasize information that the listener should be aware of. For example, "Before we start, "you must know" the project's goals".

What can I say instead of "you must know"?

You can use alternatives like "it is essential to know", "it is important to understand", or "you need to understand" depending on the context.

Is "you must know" too informal for academic writing?

While "you must know" is acceptable, it might be more appropriate to use a more formal alternative in academic writing, such as "it should be noted that" or "it is important to understand".

What's the difference between "you must know" and "you should know"?

"You must know" implies a higher degree of necessity or importance than "you should know". "You should know" suggests that the information is helpful but not necessarily critical, while ""you must know"" indicates the information is essential.

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Source & Trust

83%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Most frequent sentences: