enter for 报名参加竞赛等 相当于及物名词 take part in ...activity 参加, 参与某种行动 如环保活动,婚礼仪式等 join连接,使结合.与什么会合. 加入参加某种组织,入党参军Join the Party/army join sb.in sth.和某人一起做某事 和我一起散步好吗(去给她买礼物) will you join me in a walk (in buying a present for her ) join up/together联合 相遇 相交 join in 参加某活动 join in the game attend the meeting 参加会议