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Justyna Jupowicz-Kozak quote

Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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cannot do

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "cannot do" is correct and usable in written English. You can use it to express an inability to perform a specific action or task. Example: "I cannot do this without your help." Alternative expressions include "unable to" and "not able to."

✓ Grammatically correct

News & Media

Academia

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

We cannot do that.

"We cannot do anything".

News & Media

The New York Times

You cannot do it.

News & Media

The New York Times

They cannot do both.

News & Media

The Economist

BUMBLEBEES cannot do it.

News & Media

The Economist

"That we cannot do.

News & Media

The New York Times

India cannot do that.

News & Media

The New Yorker

"They cannot do it.

News & Media

The New York Times

Some cannot do without.

News & Media

The New Yorker

They cannot do otherwise.

News & Media

The Economist

I cannot do coffee.

News & Media

The New York Times
Show more...

Expert writing Tips

Best practice

Use "cannot do" to express a clear inability to perform an action. Choose it over more verbose alternatives when directness and clarity are desired.

Common error

While grammatically correct, "cannot do" can sound overly formal in casual conversation. Opt for "can't do" or "not able to" in informal settings for a more natural 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 "cannot do" functions as a negative predicate, indicating an inability or impossibility to perform an action. As Ludwig AI confirms, it's a grammatically sound way to express that something is not feasible or permissible. The examples show it used in various contexts from personal limitations to broader systemic constraints.

Expression frequency: Very common

Frequent in

News & Media

88%

Academia

8%

Formal & Business

2%

Less common in

Science

1%

Encyclopedias

0%

Wiki

0%

Ludwig's WRAP-UP

In summary, the phrase "cannot do" is a grammatically correct and frequently used expression to indicate an inability or impossibility to perform an action. Ludwig AI confirms its validity and widespread usage across various contexts. It is particularly common in News & Media sources, offering a neutral to formal tone suitable for professional and academic writing. While "can't do" may be preferred in informal settings, "cannot do" provides a clear and direct way to communicate limitations, boundaries, or constraints, making it a valuable phrase for effective communication.

FAQs

How can I use "cannot do" in a sentence?

Use "cannot do" to express an inability to perform an action. For example, "I cannot do this without your help" or "They cannot do both at the same time".

What are some alternatives to "cannot do"?

You can use alternatives like "unable to do", "can't do", or "not able to do" depending on the context.

When is it more appropriate to use "cannot do" versus "can't do"?

"Cannot do" is more formal and suitable for professional or academic writing. "Can't do" is a contraction and is better suited for informal conversations or writing.

Is "cannot do" the same as "unable to do"?

While they have similar meanings, "cannot do" is generally more direct and forceful. "Unable to do" may imply a lack of skill or resources, while "cannot do" suggests a stronger prohibition or impossibility.

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Source & Trust

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Authority and reliability

4.5/5

Expert rating

Real-world application tested

Most frequent sentences: