join等于什么

jion in 和take part in意思比不多，但用法有差别

join in多指参加小规模的活动如“球赛、游戏”等，常用于日常口语。如：

Come along， and join in the ball game.

一起来，来参加球赛。

Why didn't you join in the talk last night?

昨晚你为什么没参加座谈

三 ， take part in 指参加会议或群众性活动等，着重说明句子主语参加该项活动并在活动中发挥积极作用。

We'll take part in social practice during the summer vacation.

暑假期间我们将参加社会实践。

We often take part in physical labor.

我们经常参加体力劳动。

take part in是惯用词组，part前一般不用冠词，但part前有形容词修饰时，要用不定冠词。

Lincoln took an active part in polities and was strongly against slavery.