is occured

USAGE SUMMARY

"is occurred" is not correct and not usable in written English.
In English, we use the verb "occur" without the "is". For example, "The earthquake occurred at midnight."

⚠ May contain grammatical issues

Science

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

Therefore, the red-shifted in absorption spectra is occurred with respect to the vacuum state.

Polymer

In the method, DHO is oxidized by the enzymatic reaction, and then reduction of DCPIP is occurred.

Nature

Meanwhile, a binodal coalescence of upper and lower miscibility gaps is occurred.

Polymer

The electrochemical impedance spectroscopy shows retards charge recombination is occurred on nitrogen-doped TiO2 spheres photoanode.

Electrochimica Acta

The EDS analysis has proven that the partial galvanic replacement is occurred.

Electrochimica Acta

After a crash is occurred, airbags must be deployed in a proper time along the crash situation.

IFAC Proceedings Volumes

The maximum deformation of rack is 8.037 mm: it is occurred in the position of accumulator head.

Physics Procedia

The maximum value of thermal performance obtained at η = 1.59 which is occurred for Re= 6000,λ= 0.07,PR="1.06.

Energy Conversion and Management

The significant increase (more than 30%) is occurred in H218O concentration in the final product of AGMD cascade system.

Chemical Engineering and Processing: Process Intensification

By applying voltage on the electrodes a periodic change in the free electrons is occurred along the optical core.

Microelectronic Engineering

The highest heat transfer coefficient is occurred at vapor quality of 0.53 and mass flow rate of 368 kg/m2 s.

Experimental Thermal and Fluid Science

Expert writing Tips

Best practice

Always use the correct form of the verb "occur". Avoid using "is" before "occurred"; instead, use auxiliary verbs like "has", "had", "will", or rephrase the sentence to use a continuous tense like "is happening".

Common error

Don't mistakenly construct sentences using "is occurred" when you mean "has occurred" or "did occur". The form "is occurred" suggests a passive construction where "occur" acts as a past participle, which is not grammatically correct in standard English.

Linguistic Context

The phrase "is occured" is intended to function as a verb phrase, typically aiming to describe an action or event that has taken place. However, it is grammatically incorrect. Ludwig AI clearly identifies this issue.

Expression frequency: Very common

Frequent in

Science

100%

Less common in

News & Media

0%

Formal & Business

0%

Academia

0%

Ludwig's WRAP-UP

In summary, the phrase "is occured" is grammatically incorrect and should be avoided in formal writing. As Ludwig AI indicates, the correct forms involve using auxiliary verbs such as "has", "had", or "did" with "occurred", or rephrasing the sentence entirely. Although examples can be found in scientific literature, these are instances of errors and do not reflect proper usage. Remember to use ""has occurred"", "did occur", or "is happening" for accurate and clear communication.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

has occurred

Uses the correct auxiliary verb "has" to form the present perfect tense.

did occur

Employs "did" to create an emphatic or interrogative past tense statement.

does occur

Uses "does" to create an emphatic or interrogative present tense statement.

had occurred

Corrects the tense to past perfect, indicating an action completed before another in the past.

will occur

Shifts to the future tense, indicating something that will happen.

is happening

Replaces the phrase with the present continuous tense, indicating an ongoing action.

took place

Uses a different verb phrase with a similar meaning.

came about

Employs an idiomatic expression with a comparable meaning.

transpired

Replaces "occurred" with a more formal synonym.

came to pass

Uses an archaic expression with a similar meaning.

FAQs

How to correctly use "occur" in a sentence?

Use auxiliary verbs like "has", "had", or "will" with "occurred" (e.g., "The event "has occurred""). Alternatively, use the continuous form: "is happening".

What is the difference between "is occurred" and "has occurred"?

"Is occurred" is grammatically incorrect. The correct phrase is ""has occurred"", which is in the present perfect tense and indicates an action that happened at an unspecified time in the past.

What can I say instead of the incorrect phrase "is occurred"?

Use alternatives such as ""has occurred"", "did occur", "took place", or "came about" depending on the intended meaning and tense.

Which is correct: "is occurred" or "has occurred"?

"Has occurred" is the correct grammatical form. "Is occurred" is not standard English.