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Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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will certainly do

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "will certainly do" is correct and usable in written English.
It can be used to express a strong assurance or commitment to perform a task or fulfill a request. Example: "If you need assistance with the project, I will certainly do my best to help you."

✓ Grammatically correct

News & Media

Science

Formal & Business

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

It will certainly do the job.

"I will certainly do that," Cameron responded.

News & Media

The Guardian

"But I will certainly do my best".

News & Media

The New York Times

We will certainly do that on Saturday.

We will certainly do that because this is a World Cup semi-final.

News & Media

Independent

There isn't an album out by the New Jazz Quartet; until then this will certainly do.

And if your children have never cried wolf, they will certainly do so here.

News & Media

The New York Times

At the least, a stronger, firmer posture will certainly do no harm.

News & Media

The New York Times

We don't know why it snapped off and we will certainly do an investigation.

News & Media

The New York Times

He will certainly do until a more likely candidate for the title comes along.

News & Media

The New York Times

This will certainly do nothing to undo the movement toward uniformity".

News & Media

The New York Times
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Expert writing Tips

Best practice

In formal writing, ensure the tone remains professional and consistent with the level of certainty you are conveying. Avoid overuse in casual conversation as it might sound overly emphatic.

Common error

While "will certainly do" is grammatically correct, avoid overusing it in casual conversations. Over-reliance on this phrase can make your speech sound overly formal or even unnatural. Vary your language with synonyms like "definitely" or "surely" for a more relaxed 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

4.6/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "will certainly do" functions as a modal verb phrase expressing a strong intention, promise, or assurance. It combines the future auxiliary verb "will" with the adverb "certainly" to emphasize the commitment to perform an action. Ludwig's examples show its use in various contexts.

Expression frequency: Very common

Frequent in

News & Media

52%

Science

25%

Formal & Business

10%

Less common in

Reference

5%

Academia

5%

Encyclopedias

3%

Ludwig's WRAP-UP

In summary, "will certainly do" is a modal verb phrase used to express a strong commitment or assurance. It is grammatically correct and very common across various contexts, as affirmed by Ludwig. The phrase is versatile and can be used in neutral to formal registers, conveying confidence and reliability. However, it's advisable to avoid overuse in very informal settings where simpler alternatives might be more suitable. The phrase is widely used in news, science, and business contexts, showcasing its broad applicability.

FAQs

How can I use "will certainly do" in a sentence?

The phrase "will certainly do" expresses a strong commitment. For example: "I "will certainly do" my best to assist you with this task."

What are some alternatives to "will certainly do"?

You can use alternatives like "will definitely do", "will surely do", or "will absolutely do" to convey a similar level of assurance.

Is "will certainly do" formal or informal?

The phrase "will certainly do" is appropriate for both formal and informal contexts. However, in very casual situations, simpler alternatives like "definitely" or "sure" might be more suitable.

What's the difference between "will certainly do" and "will probably do"?

"Will certainly do" indicates a strong assurance, while "will probably do" suggests a higher likelihood but not a guaranteed outcome. The key difference lies in the level of commitment conveyed.

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Authority and reliability

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Most frequent sentences: