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Justyna Jupowicz-Kozak quote

Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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is since

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase 'is since' is not correct or usable in written English.
Instead, you would use 'has been' or 'has been since' to express a similar meaning. For example, "He has been living in London since 2018."

⚠ May contain grammatical issues

Human-verified examples from authoritative sources

Exact Expressions

57 human-written examples

That is, since its birth.

News & Media

The New Yorker

Where is 'Since U Been Gone'?

News & Media

The New Yorker

It all is since Jeremy became leader.

News & Media

The Guardian

It turns out the answer is: since he was 12.

News & Media

Independent

The total is since thought to have risen.

News & Media

The Guardian

History "is what it is," since it can't be changed.

News & Media

The New Yorker

"Mystery liquids is exactly what this drilling waste is, since its ingredient toxins aren't known".

News & Media

The New York Times

No, what an American would ask is: Since when did Israel become part of Europe?

News & Media

The New Yorker

And delicate it is since Mr. Beard's cooking instructions work to the minute.

Show more...

Human-verified similar examples from authoritative sources

Similar Expressions

2 human-written examples

In fact, that figure is since last October.

News & Media

The Guardian

I mean, as someone who has known who Donald J Trump is since 1980.

Expert writing Tips

Best practice

Avoid using the phrase "is since". Instead, opt for grammatically correct alternatives like "has been since" or rephrase the sentence to use "because" or "as" if indicating causality.

Common error

A common mistake is using "is since" when trying to indicate a duration or a causal relationship. Always ensure the verb tense agrees with the intended meaning. For continuous actions or states, use "has been since".

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

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

60%

Authority and reliability

1/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "is since" is generally considered grammatically incorrect in standard English. It attempts to combine a present tense verb with a conjunction indicating time or cause, but it does not form a coherent grammatical structure. As Ludwig AI indicates, better alternatives should be considered.

Expression frequency: Missing

Frequent in

Science

0%

News & Media

0%

Formal & Business

0%

Less common in

Science

0%

News & Media

0%

Formal & Business

0%

Ludwig's WRAP-UP

In summary, the phrase "is since" is not grammatically correct in standard English. As Ludwig AI clearly points out, it's best to avoid this phrase altogether. Instead, use alternatives like "has been since" to indicate a continuing state or action, or "because" or "as" to indicate causality. Remember to check your verb tenses and sentence structures to ensure clarity and correctness in your writing. By using these tips, you can avoid this common error and enhance the precision of your communication.

FAQs

How can I correct a sentence using "is since"?

Replace "is since" with phrases like "has been since" or restructure the sentence. For example, instead of "The project is since delayed", use "The project has been delayed since last week."

What's a better way to express duration than "is since"?

Use "ever since" or "from then on" to show the time passed from a specific point. For example, "Ever since the change, performance improved."

When can I use "since" to show causality instead of time?

Use "since" to indicate a reason when it introduces a well-known or obvious fact. For example, "Since you're tired, you should rest" indicates a known reason for resting.

What is the correct tense to use with "since" when indicating time?

Use the present perfect tense (has/have + past participle) for the main clause and the simple past tense for the "since" clause. For example, "I have known her "since" we were kids."

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Source & Trust

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Authority and reliability

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Expert rating

Real-world application tested

Most frequent sentences: