mayhanlimei
attendtheseminarseminar研讨会属于会议一类的，包括meeting，conference等，动词用attend，表示出席的意思。participatein通常用于参加一些活动，如participateinanactivity/aparty/thegame/festivities
头发长很慢
meeting: is general term for people assembled for a paticular purpose conference: formal meeting and often lasts for several days symposium（学术交流会）: refers exclusively to the meeting for speciallized academic discussion congress（代表大会）: usually attened by representatives or delegates who belong to government or nongovernment convention（年会）:a kond of routine meeting annaually forum（论坛）:a public meeting at which people exchange ideas and discuss issues,especially public issue seminar（讨论会）:a class-like meeting where people discuss a particular topic or subject that presented by several major speakers workshop(研讨班):normally it lasts one week.A period discussion on a particular subject in which a group of people learn about the subject by sharing their knowledge or experience colloquium（学术报告会）： large seminar session（届，会期） panel discussion（小组讨论）： a small group discussion parallel sessions:分会场seminar（专家讨论会，大学的研究班）, forum, rap session (座谈会) symposium(专题讨论会) 一般用的比较常用的还是forum
