joinjoin和join in区别用法！
2021-08-14
join和join in区别用法！join 指加入某组织并成为其中一员
(join the Party, join the army, join us)
join in 一般指参加活动,不过不是很大型
(join in the game, join in the conversation,join in the singing)
大型的一般用take part in
正式活动用attend
(meeting,wedding,funera...