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Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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is mainly because

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase 'is mainly because' is correct and can be used in written English.
It is used to explain the primary reason for something happening. For example: The reason I missed the meeting is mainly because I got stuck in traffic.

✓ Grammatically correct

News & Media

Science

Academia

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

This is mainly because, as her track record demonstrates, she is fearless.

That is mainly because of language.

News & Media

The Economist

This is mainly because of the bears.

News & Media

The Guardian

That is mainly because of the slowing Chinese economy.

News & Media

The New York Times

That is mainly because of an increase in US arrivals.

News & Media

The Guardian

This is mainly because of the film "Deutschland.

This is mainly because the dashboard and leather are nicer.

News & Media

The New York Times

This is mainly because of the difference between drivers' behaviors.

This is mainly because of a fall in immigration.

News & Media

Independent

That is mainly because the new merged companies perform badly.

News & Media

The Economist

But that is mainly because of robust tax revenues.

News & Media

The Economist
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Expert writing Tips

Best practice

When using "is mainly because", ensure that the reason you provide is indeed the primary one, not just a contributing factor. Avoid overuse by varying sentence structure with alternatives like "primarily due to" or "largely attributable to".

Common error

Avoid stating minor reasons after "is mainly because". This phrase should introduce the most significant cause. If there are multiple important factors, consider using "is partly because" or listing all the contributing reasons.

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

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

86%

Authority and reliability

4.6/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "is mainly because" functions as a causal connector, linking a result or situation to its primary cause. It indicates that the following statement is the most significant reason for the preceding statement. As Ludwig AI confirms, this phrase correctly explains causes.

Expression frequency: Very common

Frequent in

News & Media

53%

Science

35%

Academia

7%

Less common in

Formal & Business

3%

Encyclopedias

1%

Wiki

1%

Ludwig's WRAP-UP

In summary, "is mainly because" serves as a causal connector, used to highlight the primary reason or cause behind a situation. As Ludwig AI confirms, the phrase is grammatically sound and prevalent across various contexts, including news, science, and academia. While versatile, writers should ensure the stated reason truly is the dominant cause and avoid overuse by exploring alternatives like "primarily due to" or "largely attributable to". When structuring sentences, place the primary subject first for clarity. By adhering to these guidelines, writers can effectively use this phrase to convey clear and accurate explanations.

FAQs

What can I say instead of "is mainly because"?

You can use alternatives like "is primarily due to", "is largely attributable to", or "stems primarily from" depending on the context.

How do I use "is mainly because" in a sentence?

The phrase "is mainly because" should be followed by the primary reason or cause for something. For example, "The delay is mainly because of the weather."

What's the difference between "is mainly because" and "is partly because"?

"Is mainly because" indicates the primary reason, while "is partly because" suggests one of several contributing factors. Use "is mainly because" when one reason is significantly more important than others.

Is it grammatically correct to start a sentence with "is mainly because"?

While grammatically correct, starting a sentence with "is mainly because" can sound awkward. It's generally better to structure the sentence so that the subject comes first (e.g., "The reason is mainly because...").

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Source & Trust

86%

Authority and reliability

4.6/5

Expert rating

Real-world application tested

Most frequent sentences: