active前面加a还是an,take an active part take part in与join.jOinin有

active前面加a还是an,take an active part take part in与join.jOinin有 take an active part in 为什么加a 为什么take part in没有a,但是take an active part in要加an? join in、 join、take part in、take an active part in 的区别 take an active part in (doing) take an active part in=? 用take an active part in造句~ We should take an active part in take an active part in为什么有an? 英语中参加俱乐部参加用Join还是Take an active part in 是否有take an active part in?是否有take active part in?如果都存在,有什么区别 I advised you should take an active part in.