Qual é a diferença entre chance e opportunity e occasion ?Podes indicar apenas respostas exemplo.

Chance implies randomness.
“By chance, I saw my friend in town yesterday”

Opportunity means a situation exists that makes it possible (or much more likely) for something to happen.
“I joined a yoga class to have the opportunity to make new friends”
“The house was empty for 2 hours. This gave Michael the opportunity to steal the papers”

Occasion has two meanings. The first is a period of time during which a specific event or activity occurs. “Christmas is an important occasion in the British calendar”
The second meaning is that someone has intended to do something and had the opportunity to. It is quite old-fashioned and not used very often.
“After my divorce I had occasion to learn how to sort out my finances”