incident 指偶然事件accident 指偶然事故event 指大事（多政治上的） 或一般性事件event / incident / happeningAll these words describe something that happens.An event is often something important or interesting: I'll never forget the terrible events of that summer. It can refer to something such as a concert, festival or sports competition:The tourist guide lists the major events in the town throughout the year.Occurrence is a formal word and is usually used, with words like common or rare, to talk about how often something happens: Divorce has become a common occurrence in this country.An incident is often something not very important but that you remember because it is unusual or unpleasant: The movie is based on a real-life incident. It can also refer to a crime or an accident:The police reported several thefts and one violent incident.Happening is used to describe something unusual or strange: strange happenings in the town.
