"join"可用作动词或名词。
作为动词时，常用以下几种搭配和用法：
1. 加入：to join a club/class/team (加入俱乐部/班级/团队)
例句：I want to join the chess club because I love playing chess.
2. 参加：to join a party/wedding/event (参加派对/婚礼/活动)
例句：We were invited to join their wedding ceremony.
3. 进入：to join a conversation/discussion (加入谈话/讨论)
例句：I decided to join the discussion and share my opinion.
4. 结合：to join forces/efforts (联合努力/力量)
例句：The two companies joined forces to develop a new product.