join in ,take part in ,attend与join 有何区别

join in ,take part in ,attend与join 有何区别 take part in, attend,join,join in 的区别 求join. join in. take part in. attend区别用法 join in,join,take part in,attend 的区别用法 求attend,take part in,join,join in的区别 join in ,take part in ,enter for,attend之间有何区别 请问join…(in); join in; take part in; attend有什么区别? join attend take part take part in区别 take part in,join ,join in和attend有什么区别? attend,take part in,join in的区别 attend,take part in,join的区别（take part in=join吗?） join\ join in与take part in的区别