join作及物动词时意为“参加、结合、连接”，作不及物动词时意为“加入、参加、结合”。那么join的过去式和过去分词是什么呢，下面让我们一起来看一下吧。
过去式和过去分词：
过去式：joined
过去分词：joined
第三人称单数：joins
现在分词：joining
常见例句：
People of various party allegiances joined the campaign.
各个不同政党的拥护者都参加了这次活动。
Over the past year, the company has joined the big league.
去年一年中，公司已跻身一流之列。
The two firms joined forces to win the contract.
两家公司联合起来争取合同。
She joined the company three months ago.
她三个月前进了这家公司。
The island is joined to the mainland by a bridge.
这个岛有一座桥与大陆相连。
Over 200 members of staff joined the strike.
200多名雇员参加了罢工。
I've had my doubts about his work since he joined the firm.
自从他加入公司以来，我对他的工作一直持有怀疑。
Their son ran away from home and joined a cult.
他们的儿子离家出走，加入了一个异教团体。
Hundreds have joined a police hunt for the missing teenager.
已有几百人和警方一同搜寻一名失踪的十几岁孩子。
