since two decades

USAGE SUMMARY

The phrase "since two decades" is not correct in standard written English.
The correct expression is "for two decades" when referring to a duration of time that has lasted for twenty years. Example: "The organization has been providing support for two decades."

⚠ May contain grammatical issues

Science

News & Media

Human-verified examples from authoritative sources

Exact Expressions

6 human-written examples

Cohesive zone models are common tools for the simulation of delamination since two decades.

Engineering Fracture Mechanics

Artificial intelligence (AI) researchers created new techniques, developed and applied them to solve engineering problems since two decades.

Engineering Failure Analysis

Combating the action of plant pathogenic microorganisms by mycoparasitic fungi has been announced as an attractive biological alternative to the use of chemical fungicides since two decades.

BMC Genomics

Multidrug-resistant (MDR) strains of Salmonella; resistant to chloramphenicol, ampicillin and trimethoprim are commonly observed since two decades and responsible for numerous outbreaks [ 8].

BMC Public Health

Since two decades, MDR S. Typhi strains have been responsible for numerous outbreaks in several South Asian countries including Pakistan, India, and Bangladesh [ 8].

BMC Public Health

A feed additive containing microorganisms that is claimed to detoxify DON by enzymatic de-epoxidation is on the market since two decades but its efficacy has often been questioned.

Applied Microbiology and Biotechnology

Human-verified similar examples from authoritative sources

Similar Expressions

53 human-written examples

The extreme right is today the main force of anti-communism in France and organised itself as Front National since three decades (Moch 1978).

Asian Journal of German and European Studies

Additive Manufacturing, a technology which has been in existence since three decades, is now successfully being transitioned from a research setting to finding technologically and financially viable end-user applications.

Procedia Technology

This fall, Myanmar, also known as Burma, will hold its first nationwide elections since five decades of military rule ended in 2011.

Los Angeles Times

As Myanmar prepares this fall to hold the first nationwide democratic elections since five decades of military rule ended in 2011, it is weighing further restrictions on the Rohingya and other minorities.

Los Angeles Times

A nationwide cease-fire would be a historic achievement in Myanmar, formerly known as Burma, which is gearing up for nationwide elections scheduled for November, the first since five decades of military rule ended in 2011.

Los Angeles Times

Expert writing Tips

Best practice

Prefer "for two decades" when indicating a duration of twenty years. This is the grammatically correct and widely accepted form.

Common error

Avoid using "since" to express a duration. "Since" is best used to indicate a starting point in the past, not a length of time. Instead of saying "since two decades", use "for two decades".

Linguistic Context

The phrase "since two decades" functions as an incorrect adverbial phrase attempting to specify a duration. The correct usage should employ "for" to denote the period, as confirmed by Ludwig AI.

Expression frequency: Uncommon

Frequent in

Science

57%

News & Media

43%

Formal & Business

0%

Less common in

Encyclopedias

0%

Wiki

0%

Social Media

0%

Ludwig's WRAP-UP

In summary, while the phrase "since two decades" appears in some contexts, it is generally considered grammatically incorrect. The correct way to express a duration of twenty years is "for two decades". As highlighted by Ludwig AI, using "since" to indicate duration is a common mistake. Therefore, it is advisable to use the alternative phrases like "over the past two decades" to ensure grammatical accuracy and clarity in writing. Though example usages may exist, adhering to standard grammatical conventions will improve the overall quality and credibility of your writing.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

for two decades

Uses "for" instead of "since" to indicate duration.

over the past two decades

Emphasizes the time period leading up to the present.

in the last twenty years

Specifies the duration using a numerical value.

during the last two decades

Similar to "in the last twenty years", but uses "during".

in the course of twenty years

More formal way to indicate a time period.

throughout the last two decades

Suggests a continuous action or state during the period.

spanning two decades

Focuses on the time period as a span or range.

for a period of twenty years

Emphasizes the length of the time.

over a twenty-year period

Similar to "for a period of twenty years", but with a slightly different structure.

since twenty years ago

Indicates the starting point twenty years in the past.

FAQs

What is the correct way to say "since two decades"?

The correct way to express a period of twenty years is "for two decades". Using "since" is grammatically incorrect in this context.

When should I use "since" versus "for"?

"Since" indicates a starting point in the past (e.g., "since 2000"), while "for" indicates a duration (e.g., "for twenty years").

Are there other ways to say "for two decades"?

Yes, you can also say "over the past two decades", "in the last twenty years", or "during the last two decades".

Is "since two decades" ever acceptable?

While occasionally found in writing, "since two decades" is generally considered grammatically incorrect. It's best to use "for two decades" or another similar phrase to ensure clarity and correctness.