Used and loved by millions

Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak quote

Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

MitStanfordHarvardAustralian Nationa UniversityNanyangOxford

he deduces that

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "he deduces that" is correct and usable in written English.
It can be used when indicating that someone has drawn a conclusion based on reasoning or evidence. Example: "After analyzing the data, he deduces that the experiment was a success."

✓ Grammatically correct

News & Media

Wiki

Encyclopedias

Human-verified examples from authoritative sources

Exact Expressions

14 human-written examples

Talking about "that dimension of intersubjectivity on which Epicureanism (and Leibnizianism too, for that matter) founders," he deduces that "what is in one today will be in another tomorrow, that by the end of our exchanges that which forms part of my essence at the moment of my writing to you may perhaps have entered yours".

"He deduces that killing a human is right in pursuit of a higher cause," she tells Grant.

Tintinologists cannot get enough of these buried treasures, and I applaud Tom McCarthy for the logical rigor with which he deduces that the jewel embedded in the title of "The Castafiore Emerald" is, in fact, Bianca Castafiore's clitoris.

News & Media

The New Yorker

From the failures of the Arab Spring, he deduces that it would have been better to leave Hosni Mubarak in power in Egypt and try to affect a more gradual transition.

News & Media

The Economist

He deduces that Jin-xi cannot possibly be the bumbling bumpkin he pretends to be, but must rather be a lost member of the dreaded 72 Demons gang, which soon shows up, making inquiries of its own.

News & Media

The New York Times

But Sperber's rigor also yields gems, as when he deduces that the Marxes must have conceived their first child in the summer of 1843, while on a visit to Marx's mother-in-law.

News & Media

The New Yorker
Show more...

Human-verified similar examples from authoritative sources

Similar Expressions

46 human-written examples

He deduced that instead of one continuous population of cod that moved, there seemed to be several sub-populations.

News & Media

The New Yorker

When he was still in his 20's, he deduced that mysterious radio emissions from Venus were caused by surface temperatures around 900 degrees Fahrenheit and that the planet had a crushing atmosphere.

News & Media

The New York Times

Nevertheless, Mr. Cusack said, in piecing together the records, he deduced that Kennedy initially sought counsel on matters of church and state -- Kennedy was hoping to become the first Roman Catholic president, and did so in 1961.

News & Media

The New York Times

He deduced that Reyes needed a cleaner swing.

News & Media

The New York Times

Here he deduced that electromagnetic radiation itself consists of "particles" of energy hν.

Show more...

Expert writing Tips

Best practice

Use "he deduces that" when you want to emphasize a logical inference drawn by a specific person based on available evidence or reasoning.

Common error

Avoid using "he deduces that" in casual or informal contexts. Simpler alternatives like "he thinks" or "he figures" may be more appropriate depending on the tone you want to achieve.

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

4.5/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "he deduces that" functions as a reporting clause, introducing a statement that represents someone's deduction or conclusion. It connects the person ("he") with the conclusion they have reached through reasoning. Ludwig's examples show how this phrase is used to convey a character's understanding or inference.

Expression frequency: Uncommon

Frequent in

News & Media

40%

Wiki

30%

Encyclopedias

10%

Less common in

Science

10%

Academia

0%

Formal & Business

0%

Ludwig's WRAP-UP

The phrase "he deduces that" serves to report a conclusion someone has drawn through reasoning, as affirmed by Ludwig. While grammatically sound, its frequency is uncommon, leaning towards neutral to formal contexts like news, encyclopedias, and analytical writing. Alternatives such as "he infers that" or "he concludes that" offer similar meanings. When employing the phrase, prioritize clarity and avoid its use in informal settings. With an expert rating of 4.5, it stands as a reliable but not ubiquitous element of the English language.

FAQs

What does "he deduces that" mean?

The phrase "he deduces that" means that someone has come to a conclusion based on reasoning or evidence. It implies a logical process of inference.

What can I say instead of "he deduces that"?

You can use alternatives like "he infers that", "he concludes that", or "he reasons that" depending on the specific nuance you want to convey.

Is it correct to say "he deduced that"?

Yes, "he deduced that" is the past tense form and is grammatically correct. "He deduces that" is present tense.

What's the difference between "he deduces that" and "he assumes that"?

"He deduces that" implies a logical conclusion based on evidence, while "he assumes that" suggests a belief or supposition without necessarily having solid evidence.

ChatGPT power + Grammarly precisionChatGPT power + Grammarly precision
ChatGPT + Grammarly

Editing plus AI, all in one place.

Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.

Source & Trust

86%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Most frequent sentences: