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Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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did not existed

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "did not existed" is not correct in English.
The correct form is "did not exist." You can use it when negating the existence of something in the past. Example: "The ancient civilization did not exist in the time period we previously thought."

⚠ May contain grammatical issues

Science

Wiki

News & Media

Human-verified examples from authoritative sources

Exact Expressions

6 human-written examples

(1) One part is the birth particles X k b i, w ˜ k b i, which did not existed in the previous time and are sampled from proposal distribution, when E k - 1 b i = e ¯, but E k (b)i = e.

One part is the birth particles X k b i, w ˜ k b i, which did not existed in the previous time and are sampled from proposal distribution, when E k - 1 b i = e ¯, but E k (b)i = e.

In March 2012, the team was not ranked in the world by FIFA and a senior national team still did not existed.

Although it was well-organized, the National Hurricane Center did not initiate advisories on the depression until 1500 UTC on June 24, since it operationally appeared that a surface circulation did not existed until then.

S100A3 was demonstrated to be overexpressed in gastric cancer by dataset GSE2669 and GSE2701, which did not existed in dataset GSE3438.

Science

BMC Cancer

However, the effects of LP to the EPEC-induced change of intestinal permeability was inhibited with the transfection of Ad-zonulin to NCM460 cells (P > 0.05, Figure  5C and D), while the impact did not existed when Ad-lacZ was transfected instead (P < 0.05, Figure  5C and D).

Human-verified similar examples from authoritative sources

Similar Expressions

53 human-written examples

It did not exist.

News & Media

The Economist

They did not exist.

lately said did not exist.

News & Media

The New Yorker

The address did not exist.

News & Media

The New York Times

Those pictures did not exist".

News & Media

The New York Times
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Expert writing Tips

Best practice

Always use "did not exist" instead of "did not existed". The auxiliary verb "did" requires the base form of the main verb.

Common error

Avoid using the past participle form of a verb after the auxiliary verb "did". Always use the base form. For instance, it's "did not exist", not "did not existed".

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

1.8/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "did not existed" attempts to negate the existence of something in the past. However, it is grammatically incorrect, as Ludwig AI points out, because the auxiliary verb 'did' requires the base form of the verb 'exist'.

Expression frequency: Rare

Frequent in

Science

40%

News & Media

40%

Wiki

20%

Less common in

Encyclopedias

0%

Formal & Business

0%

Reference

0%

Ludwig's WRAP-UP

The phrase "did not existed" is an incorrect construction. As Ludwig AI indicates, the correct form is ""did not exist"". While some instances appear in varied sources, the grammatical error undermines the intended meaning. Always remember to use the base form of the verb after the auxiliary "did". Appropriate alternatives include "never existed" or "was nonexistent", depending on the specific context. Proper grammar ensures clarity and credibility in communication.

FAQs

What is the correct way to say something didn't exist in the past?

The correct phrase is "did not exist". The word "did" is an auxiliary verb, and it requires the base form of the verb after it. For example, "That technology "did not exist" back then".

Is "did not existed" grammatically correct?

No, "did not existed" is grammatically incorrect. The correct form is "did not exist". The auxiliary verb "did" always takes the base form of the verb.

What are some alternatives to "did not exist"?

Depending on the context, you could use alternatives such as "never existed", "was nonexistent", or "had not existed".

How can I remember the correct verb form to use with "did not"?

Think of "did not" as a helper phrase that sets the tense. The main verb should always be in its simplest form. So, it's always "did not exist", "did not happen", "did not occur", and so on.

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Real-world application tested

Most frequent sentences: