The phrase "it draws on someone that..." is not a standard or commonly used idiom in modern English. However, it may appear in literary or older texts, often implying that a situation or realization gradually becomes apparent or emotionally impactful to a person.
In contemporary usage, you might be thinking of similar constructions like:
- "It dawns on someone that..." — meaning someone suddenly realizes something.
- "It weighs on someone that..." — meaning something causes emotional burden.
Example (hypothetical/literary):
"It drew on him that he had been wrong all along."
If you encountered this phrase in a book or conversation, context is key. It likely conveys a slow, reflective realization rather than a sudden insight.
For learners of English, focusing on more common expressions like "it dawned on me" will be more practical for everyday communication.