I knew how

USAGE SUMMARY

The phrase "I knew how" is correct and usable in written English.
You can use it when referring to a past understanding or ability to do something. Example: "When I was younger, I knew how to ride a bike without training wheels."

✓ Grammatically correct

News & Media

Human-verified examples from authoritative sources

Exact Expressions

58 human-written examples

I knew how Bodkin felt.

The New Yorker

"I knew how to draw.

The New York Times - Arts

I knew how things worked there.

The New Yorker

"I knew how to generate excitement.

The New Yorker

I knew how lame that sounded.

The New York Times

I knew how to make her laugh.

The New York Times

I knew how it would look.

The New Yorker

And I knew how to walk.

The New York Times

I knew how critical the situation looked.

The Guardian - Sport

I knew how vicious she could be.

The New Yorker

I knew how he would sound.

The New Yorker

Expert writing Tips

Best practice

When using the phrase "I knew how", follow it with a specific action or situation to give it context. For example: "I knew how to solve the problem"

Common error

Avoid using "I knew how" without providing context. Saying "I knew how" without specifying what you knew can leave the reader wondering.

Linguistic Context

The phrase "I knew how" functions as an independent clause expressing past knowledge or ability. It is typically followed by an infinitive phrase specifying the action or task the speaker understood how to perform. As confirmed by Ludwig, the phrase is grammatically correct and widely used.

Expression frequency: Very common

Frequent in

News & Media

100%

Less common in

Science

0%

Formal & Business

0%

Encyclopedias

0%

Ludwig's WRAP-UP

In summary, the phrase "I knew how" is a grammatically sound and frequently used expression to convey past understanding or ability. As Ludwig AI confirms, it’s widely accepted and appears across various sources, particularly in news and media. While versatile, ensure the context clarifies the specific skill or knowledge you possessed. Alternatives like "I understood how" or "I was aware of how" offer subtle nuances for different situations. By being specific and avoiding overuse, you can effectively communicate your past competencies with clarity and precision.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

I understood how

Emphasizes comprehension or grasping of something.

I was aware of how

Highlights being conscious or informed about something.

I realized how

Indicates a sudden understanding or recognition.

I perceived how

Focuses on the way something was interpreted or viewed.

I figured out how

Suggests solving or discovering a method or solution.

I had the ability to

Highlights the capacity or skill to perform an action.

I was capable of

Similar to 'ability', but can also imply inherent talent.

I had the knowledge to

Emphasizes possessing the required information or expertise.

I was trained in

Implies formal instruction or preparation in a particular skill.

I had experience with

Highlights familiarity and practical understanding gained over time.

FAQs

What's a more formal way to say "I knew how"?

In more formal contexts, you could use phrases like "I understood how", "I was aware of how", or "I possessed the knowledge to". Each alternative, like "I understood how", introduces a slight nuance, so choose the one that best fits your intended meaning.

Is it ever incorrect to use "I knew how"?

The phrase "I knew how" is generally correct when referring to a past ability or understanding. However, avoid using it in contexts where you want to express current knowledge; in such cases, "I know how" is more appropriate. Make sure that it makes grammatical sense in the full sentence.

What can I say instead of "I knew how" to emphasize skill?

To emphasize skill or proficiency, consider using "I was skilled in", "I had mastered", or "I was proficient in". Alternatively you can use "I was capable of" depending on the context.

How does "I knew how" differ from "I found out how"?

"I knew how" implies prior knowledge or understanding, whereas "I found out how" suggests that you acquired the knowledge or skill at some point in the past. Therefore, to show that something was new for you, use the alternative "I found out how".