did he know

USAGE SUMMARY

"did he know" is a correct and usable phrase in written English.
You can use it to ask a question, such as: "Did he know that she was planning to leave?".

✓ Grammatically correct

News & Media

Academia

Human-verified examples from authoritative sources

Exact Expressions

58 human-written examples

Did he know why?

The New Yorker

What did he know?

The Economist

Little did he know.

The New York Times - Sports

But what did he know?

The New York Times

Did he know about this?

The New York Times

Did he know that?

The Guardian - Books

Did he know something?

The New York Times - Sports

What did he know and when did he know it?

The New York Times

Did he know it?

The Guardian - Books

Human-verified similar examples from authoritative sources

Similar Expressions

2 human-written examples

How does he know?

The Economist

Does he know Benny Shacklett?

The New Yorker

Expert writing Tips

Best practice

Vary your sentence structure by sometimes using alternatives like "was he aware" or "had he realized" to maintain reader engagement.

Common error

Avoid using "did he knew". The auxiliary verb 'did' already indicates past tense, so the main verb should be in its base form: "did he know".

Linguistic Context

The primary grammatical function of "did he know" is to form an interrogative clause. It's used to ask a question about whether a male person had knowledge or awareness of something at a specific time in the past. Ludwig shows examples from news, books and academic articles.

Expression frequency: Very common

Frequent in

News & Media

60%

Academia

20%

Science

10%

Less common in

Formal & Business

5%

Wiki

3%

Encyclopedias

2%

Ludwig's WRAP-UP

The phrase "did he know" is a common and grammatically correct interrogative clause used to inquire about someone's past knowledge. As Ludwig AI confirms, it's widely used in various contexts, from news and media to academic writing. The phrase exhibits a neutral register and aims to elicit information about a person's awareness of a specific fact or situation. While alternatives like "was he aware" or "had he realized" exist, "did he know" remains a straightforward and frequently used option. Ensure correct tense agreement to avoid errors like "did he knew". This phrase is versatile and adaptable, making it a valuable tool for clear communication.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

did he have knowledge of

A more formal and direct way of asking if someone knew something.

did he understand

Focuses on comprehension rather than just awareness.

was he aware

Focuses on the state of being conscious or informed about something.

had he realized

Emphasizes the process of coming to understand or recognize something.

was he conscious of

Implies a deliberate awareness of something.

was he cognizant

A more formal way of asking if someone was aware or conscious of something.

was he informed

Highlights the act of receiving information.

was he up to date

Suggests being informed about the latest developments or news.

was he privy to

Suggests that the person had access to confidential or secret information.

was he in the loop

An informal way of asking if someone was part of a group that shares information.

FAQs

How do I use "did he know" in a sentence?

Use "did he know" to inquire if someone had prior knowledge of a specific fact or situation. For example: "Did he know about the surprise party?". It's a common way to start a question.

What can I say instead of "did he know"?

You can use alternatives like "was he aware", "had he realized", or "did he understand" depending on the context.

Is it correct to say "did he knew" instead of "did he know"?

No, "did he knew" is grammatically incorrect. The correct form is "did he know". The auxiliary verb 'did' already indicates the past tense, so the main verb should be in its base form.

What's the difference between "did he know" and "was he aware"?

"Did he know" is a more direct and common way to ask if someone had knowledge of something. "Was he aware" is a slightly more formal way of inquiring about someone's consciousness or understanding of a situation.