this is the reason why

USAGE SUMMARY

The phrase "this is the reason why" is correct and usable in written English.
It can be used to indicate the explanation for something that has previously been stated. For example, "I have decided to move away from home. This is the reason why."

✓ Grammatically correct

Science

News & Media

Formal & Business

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

"This is the reason why I'm here.

The New York Times - Sports

This is the reason why I selected him always.

Independent

Of course this is the reason why communication is key.

The Guardian

This is the reason why IPA was created.

The Guardian

"This is the reason why I came here.

The New York Times - Sports

This is the reason why statistical evaluation becomes important.

Journal of Economic Structures

This is the reason why the swings were generated.

Nanoscale Research Letters

This is the reason why silica nanoparticles are strongly hydrophilic.

Nano Convergence

This is the reason why power output is decreased.

Bioresources and Bioprocessing

This is the reason why PLA sometimes was found late.

International Journal of Emergency Medicine

This is the reason why deltoid activity is high.

ROBOMECH Journal

Expert writing Tips

Best practice

Use "this is the reason why" to clearly introduce the explanation following a statement, ensuring a smooth flow of information and logical connection for your reader.

Common error

Avoid using "this is the reason why because" as it creates unnecessary redundancy. Choose either "this is the reason why" or "because" to introduce your explanation.

Linguistic Context

This is the reason why functions as a causal connector, linking a preceding statement with its explanation. Ludwig AI confirms its grammatical correctness and usability. It introduces the cause or justification for something previously mentioned.

Expression frequency: Very common

Frequent in

Science

54%

News & Media

28%

Formal & Business

18%

Less common in

Wiki

2%

Encyclopedias

0%

Reference

0%

Ludwig's WRAP-UP

In summary, the phrase "this is the reason why" serves as a clear and direct causal connector, frequently used to introduce the explanation behind a preceding statement. Ludwig AI validates its grammatical correctness and common usage, particularly in scientific and news contexts. While versatile, writers should be mindful of potential redundancies and may opt for more formal alternatives like therefore or hence in specific settings. Always make sure your writing style matches the one asked for by the target audience.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

that explains why

Focuses more on explaining a situation than directly stating the cause.

that's why

More concise and informal way to express the reason.

hence

A more formal and concise way of saying "therefore" or "as a result".

therefore

A more formal way of indicating a logical consequence.

consequently

Similar to "therefore", but emphasizes the result or effect.

as a result

Directly indicates that something is a consequence of a previous action or event.

for this reason

More formal and emphasizes the specific reason being given.

this accounts for

Focuses on explaining how something contributes to a particular outcome.

that is the explanation for

Highlights the explanation aspect more explicitly.

the explanation for this is

Inverts the structure to emphasize the explanation itself.

FAQs

How can I use "this is the reason why" in a sentence?

You can use "this is the reason why" to introduce an explanation or cause for a previous statement. For example, "I'm feeling tired today. "This is the reason why" I went to bed late last night."

What's a more formal alternative to "this is the reason why"?

For more formal writing, consider using phrases such as "therefore", "hence", or "for this reason". These alternatives maintain a professional tone.

Is it grammatically correct to say "the reason is because"?

While commonly used, "the reason is because" is often considered redundant. It's better to use either "the reason is that" or simply "because" to avoid repetition. For instance, instead of "The reason is because I was late", say "The reason is that I was late" or "I was late because..."

What is the difference between "this is the reason why" and "that's why"?

"This is the reason why" is slightly more formal and explicit, while "that's why" is more informal and conversational. Both are used to indicate a cause-and-effect relationship, but "this is the reason why" often introduces a more detailed explanation.