在学习专业英语词汇中，有时同义词的'辨析是很不容易的，我们一般从三方面进行区分，即：语法、语义和文体。语法主要是词性、搭配、句式等的区分;语义主要是词义的本义、引申义、比喻义和内涵和外延等的区分;文体主要是正式和非正式、褒义和贬义等的区分。
1.事情,事件
(事) thing: An event, a fact, a subject. He talked of many interesting things.
(事情) matter: Seth that you have to deal with, something to be discussed, thought over. There are several matters to be dealt with at the meeting.
(事务 责任) business: A special duty, something that has to be done. Public business is every ones business.
(事务) affair: An event or set of connected events. (pl) private and personal life. I have many affairs to look after.
(事件) event: An important happening. Events such as birthdays and anniversaries are often celebrated. Do you know the chief events of 1986.
incident: Not as important as an event. Incidents seldom are celebrated. Sometimes an event becomes an incident after many years have passed.
(偶然事件) happening: An occurrence, and sometimes an unusual one. There have been strange happenings here lately.
(偶发事件) occurrence: An incident that is usually unexpected and has not been planned ahead of time. Flood is practically an annual occurrence in this district.
