that is the reason why

USAGE SUMMARY

The phrase "that is the reason why" is correct and usable in written English.
It can be used to explain the cause or justification for something that has been mentioned previously. Example: "I decided to take the bus instead of driving; that is the reason why I arrived late."

✓ Grammatically correct

News & Media

Science

Academia

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

Kids and dogs, that is the reason why people buy houses".

The New York Times

"So it is money, and only money, that is the reason why we are leaving today".

The Guardian - Opinion

Dihydroxyacetone is an ingredient that is the reason why your skin gets that color.

WikiHow

"That is the reason why.

The New York Times - Sports

That is the reason why the passive film formed on the NB304ss was more protective.

Electrochimica Acta

That is the reason why I wanted to explain this once more.

Yale University

Indeed, that is the reason why Apple recently acquired Quattro Wireless, a mobile advertising agency.

The Economist

That is the reason why there is no substantial free speech in India.

The New York Times

"That is the reason why Karzai is trying to negotiate now," a senior analyst said.

The New York Times

That is the reason why I decided to ask for her resignation, to make a change.

The Washington Post

That is the reason why fatigue is the main wear mechanism, and this process is called splat delamination.

Surface and Coatings Technology

Expert writing Tips

Best practice

Use "that is the reason why" to clearly connect a cause or justification to a statement, ensuring your writing flows logically and readers understand your reasoning.

Common error

Avoid using "that is the reason why" when a simpler construction like "that's why" or "therefore" would suffice. Overusing the phrase can make your writing sound repetitive and less impactful.

Linguistic Context

The phrase "that is the reason why" functions as a causal connector, establishing a relationship between a cause and its effect. It explicitly states the justification or explanation for a preceding statement. Ludwig's AI analysis indicates that this phrase is correct and commonly used.

Expression frequency: Very common

Frequent in

News & Media

45%

Science

40%

Academia

10%

Less common in

Wiki

3%

Formal & Business

2%

Reference

0%

Ludwig's WRAP-UP

In summary, "that is the reason why" is a grammatically correct and widely used phrase that functions as a causal connector. According to Ludwig AI, it serves to explain the cause or justification for something previously mentioned. While common in various contexts, particularly News & Media and Science, it's important to use it judiciously, avoiding redundancy by considering simpler alternatives like "that's why" or "therefore". By understanding its function and appropriate usage, writers can effectively convey reasoning and maintain clarity in their communication.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

that explains why

This alternative directly highlights the explanation aspect, shifting the emphasis from reason to explanation.

that's why

A shortened, more informal version that maintains the same meaning but reduces formality.

for that reason

This alternative is more concise and focuses on the cause-and-effect relationship.

that is why

A more direct and slightly less verbose version of the original phrase.

hence

A formal and concise term implying a logical consequence or result.

therefore

A formal alternative indicating a conclusion based on preceding evidence or reasoning.

consequently

This emphasizes the resulting effect or outcome of a preceding action or situation.

as a result

This phrase highlights the outcome or consequence of a specific action or event.

this implies that

This suggests a logical deduction or conclusion drawn from an existing statement or situation.

the cause of this is

This alternative shifts the focus to identifying the specific cause rather than simply stating the reason.

FAQs

What's a simpler way to say "that is the reason why"?

Alternatives include "that's why", "therefore", or "consequently". The best choice depends on the desired level of formality and the specific context.

Is it grammatically correct to use "that is the reason why"?

Yes, "that is the reason why" is grammatically correct and widely accepted. Ludwig AI confirms that the phrase is correct and usable in written English.

When should I use "that is the reason why" instead of "because"?

Use "that is the reason why" when you want to emphasize the connection between a previous statement and its cause. "Because" is generally more concise and suitable when the cause is already understood or implied.

How can I avoid overusing "that is the reason why" in my writing?

Vary your sentence structure and use synonyms like "that explains why", "for that reason", or "as a result" to maintain clarity and avoid repetition.