If you are not reading this article in English, I highly recommend that you turn off the automatic translation on your browser.
This particular expression is used when talking about the past to express that something happened prior to the time we are describing, and it emphasizes that much time passed between that event and the time we are talking about.
Example: “It was a long time since he drove a car, yet he did it very well.”
RECEIVE SPECIAL DIDACTIC MATERIAL
JOIN THE YOUGRAMMAR COMMUNITY!
Thanks for visiting YouGrammar.com – By Marco Cossu