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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
CEO of Professional Science Editing for Scientists @ prosciediting.com
had realised
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "had realised" is correct and usable in written English.
It is typically used to indicate that someone became aware of something in the past before another past event. Example: "By the time she arrived at the meeting, she had realised that she forgot her presentation materials."
✓ Grammatically correct
News & Media
Science
Formal & Business
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
59 human-written examples
He was also, they had realised, David Beckham.
News & Media
Poignant indeed, but Harvey had realised his operatic vision.
News & Media
Pragmatists within the government had realised that Islamism was prolonging the civil war.
News & Media
One reason was that risk was more concentrated than anyone had realised.
News & Media
I had realised that Phil had frozen to death," he said.
News & Media
At college in her mid-teens, Pinto had realised that theatre and literature were her "calling".
News & Media
Energy giants like Gazprom and Lukoil are in much worse shape than people had realised.
News & Media
By the next year, the Izbickis had realised they had to get out.
News & Media
We just must, because now there is even more at stake than some had realised.
News & Media
But neither of us had realised quite how calamitous an effect it would have on Facebook.
News & Media
But by the late 1970s, Feldman had realised he had to go further.
News & Media
Expert writing Tips
Best practice
Use "had realised" to clearly establish that an understanding occurred before another event in the past. This helps maintain a clear chronological order in your writing.
Common error
Avoid using "had realised" when referring to a present or future realization. This tense is specifically for past perfect actions. Ensure the surrounding sentences are also correctly tensed to match the past perfect.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "had realised" functions as the past perfect form of the verb 'realise', indicating an action of becoming aware or understanding that was completed before another action in the past. As confirmed by Ludwig, this is a grammatically sound construction.
Frequent in
News & Media
57%
Science
15%
Wiki
8%
Less common in
Formal & Business
7%
Reference
3%
Encyclopedias
2%
Ludwig's WRAP-UP
In summary, "had realised" is a grammatically correct and very common phrase used to express a past perfect action of becoming aware or understanding. As Ludwig AI confirms, it's suitable for various contexts, particularly in news, media, and scientific writing. When using "had realised", ensure it accurately reflects a sequence of past events, with the realization occurring before another action. Remember to avoid using it in the present tense, as this would be grammatically incorrect. Consider alternatives such as "had become aware" or "had come to understand" depending on the specific nuance you wish to convey.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
had become aware
Focuses on the process of becoming conscious or informed about something.
had come to understand
Implies a gradual process of gaining comprehension.
had recognized
Highlights the act of identifying something previously known but not acknowledged.
had grasped
Emphasizes a firm understanding or comprehension.
had perceived
Indicates an awareness gained through the senses or intuition.
had apprehended
Suggests a more formal or intellectual understanding.
had discerned
Implies careful observation leading to a realization.
had figured out
Conveys a sense of solving a problem or puzzle to reach understanding.
had worked out
Similar to 'figured out', but can also imply planning or arrangement.
had discovered
Highlights the finding or uncovering of new information.
FAQs
How do I use "had realised" correctly in a sentence?
Use "had realised" to indicate an action of becoming aware or understanding that was completed before another action in the past. For example, "She "had realised" her mistake before he pointed it out".
What are some alternatives to using "had realised"?
Depending on the context, you can use phrases like "had become aware", "had come to understand", or "had recognized" instead of "had realised".
Is it correct to use "had realised" in present tense?
No, "had realised" is in the past perfect tense, used to describe an action completed before another past action. Using it in the present tense would be grammatically incorrect. Use "realise" or "realises" for present tense.
What is the difference between "had realised" and "realised"?
"Had realised" indicates an action completed before another point in the past, while "realised" (simple past) indicates an action that occurred at a specific point in the past. Example: "She "realised" she was late" vs. "She "had realised" she was late before the meeting started".
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested