https://esol.excellencegateway.org.uk/content/learners/grammar-and-vocabulary/grammar-lessons/regrets-third-conditional That's a nice old song: Edith Piaf singing about how she hasn't got any regrets, which is a good thing because it's not a good idea to spend too long thinking about the past because you can't change it: but you can learn from your past mistakes. Like my friend Jack, he made some silly mistakes earlier this year that could have had very serious consequences. You see, Jack was on holiday in the Mediterranean and he spent the first week happily sunbathing and swimming but then he started to get a little bit bored and he decided to explore the mountain that he could see behind his hotel. So one afternoon, about two or three o'clock, he set off up the mountain, with a bottle of water, wearing deck shoes, he remembered to change out of his sandals, and he told me it was lovely. It wasn't a difficult walk up the mountain, the view was beautiful and ...