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Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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certainly I do

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "certainly I do" is correct and usable in written English.
You can use it as an affirmative response to a question, indicating strong agreement or affirmation. Example: "Do you believe in the importance of education? Certainly I do."

✓ Grammatically correct

News & Media

Science

Human-verified examples from authoritative sources

Exact Expressions

18 human-written examples

"Certainly I do.

News & Media

The New York Times

"Yes, certainly I do.

News & Media

The Guardian

Certainly I do, as a Midwestern vegetable farmer.

News & Media

The New York Times

(Minister, approaching a pretty woman: "Do you believe in the hereafter?" Woman: "Certainly I do". Minister (leering): "Then you know what I'm here after").

News & Media

The New Yorker

"Certainly, I do have to defend my position, but you know, things like apologising and those sort of things, they don't have a place in golf here.

Certainly I do not suggest that review of the decision regarding the Philadelphia Naval Yard will bring the statutory scheme tumbling down.

News & Media

The New York Times
Show more...

Human-verified similar examples from authoritative sources

Similar Expressions

40 human-written examples

Certainly, I didn't.

News & Media

The New Yorker

Certainly I didn't.

News & Media

The New York Times

Almost certainly I didn't buy anything.

Certainly, I didn't want to hit anyone.

News & Media

The New York Times

Certainly I did not undergo a change of mind.

Science

SEP
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Expert writing Tips

Best practice

Use "certainly I do" to express a strong, affirmative agreement or confirmation, especially when aiming for a tone that is both polite and emphatic.

Common error

Avoid using "certainly I do" in very casual conversations, as it may sound overly formal or stilted. Opt for simpler affirmatives like "yes", "absolutely", or "sure" in informal settings.

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

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

88%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "certainly I do" functions as a strong affirmative response. It's used to convey agreement or confirmation in a direct and unambiguous manner. Ludwig AI indicates this is a correct and usable phrase.

Expression frequency: Uncommon

Frequent in

News & Media

50%

Science

25%

Formal & Business

25%

Less common in

Academia

0%

Encyclopedias

0%

Wiki

0%

Ludwig's WRAP-UP

In summary, the phrase "certainly I do" is a grammatically sound and usable expression to convey a strong affirmative response. Ludwig AI confirms its correctness and applicability. While not the most common phrase, it offers a polite and emphatic way to express agreement, suitable for various contexts including news, science, and formal settings. To vary your expressions, alternatives like "absolutely I do" or "indeed I do" can be used. Remember to reserve it for situations where a degree of formality is appropriate to avoid sounding overly stilted.

FAQs

What does "certainly I do" mean?

The phrase "certainly I do" is used to express strong agreement or affirmation to a question or statement. It indicates that you agree with something without any doubt.

When is it appropriate to use "certainly I do"?

It's appropriate in situations where you want to express strong agreement in a polite and somewhat formal manner. It can be used in discussions, interviews, or written communication where a clear and confident affirmation is needed.

What can I say instead of "certainly I do"?

You can use alternatives like "absolutely I do", "indeed I do", or "of course I do" depending on the context and desired level of formality.

Is "certainly I do" more formal than "sure I do"?

Yes, "certainly I do" is more formal than "sure I do". "Sure I do" is more casual and suitable for informal conversations, while "certainly I do" adds a level of politeness and emphasis that is better suited for more formal settings.

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Source & Trust

88%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Most frequent sentences: