是join in army还是 join in a army?

是join in army还是 join in a army? 一般来讲是join the army 还是 join army 还是join an army 是join the army（陆军）还是take part in army（陆军）? 是JOIN SB 还是JOIN IN SB ,JOIN,JOIN IN,TAKE PART IN 有什么区别? take part in 是等于 join还是join in? 请问：是join in party（派对） 还是 join party 是join the game还是join in the game 到底是 join 还是 join in a group.I intend to join (in) your research group. join hands 对吗,还是join in hands join organizations还是join in organizations 参加军队英语应该怎么说?Join in army还是Join army 还有,要不要the呢?我觉得应该是不能要吧! serve in the army和join the army的区别比如serve in the army是完成时里的,只是状态.join the army是现在或将来的,表动作, 是attend the party 还是take part in 还是join in还是join并且给出理由 join in the army里的in为什么要去掉 join join in 区别? 是join in the event还是 join the event? 活动event,不知好用join in吗? 英语翻译是join the party还是join in the party?有没有in啊? he is old enough _____the army.A.to join in B.joined C,join D.to join