Confusion

[Parabashi]

Dear Sir,

Sometimes I am confused using the ‘as’ and ‘when’. As example:
“When I was three, I visited my grandparents’ house.”
Or
“As I was three, I visited my grandparents’ house.”

Which one correct sentence?

[Anglika]

Both are correct, but for different contexts.

"When I was three..." = I had reached the age of three, so I did something

"As I was three..." = Because I had reached the age of three, I was able to do something. Before that I was not able to do it.

[Parabashi]

Both are correct, but for different contexts.

"When I was three..." = I had reached the age of three, so I did something

"As I was three..." = Because I had reached the age of three, I was able to do something. Before that I was not able to do it.

_________________________________________________

I am highly pleased to receive the answer and thanks a lot.

[Anglika]

A pleasure to be of assistance