In vain 有否定含义吗

In vain 有否定含义吗 介词后不是不能接形容词吗?可句中in vain,vain是一个形容词啊. everything is in vain in the vain 和in vain 的区别是什么 They tried to make the__audience calm down,but in vain.A）exciting B)excited C)excitement D)excitantA、B、D都有形容词的含义,我想知道有这几个有什么区别,导致B成为了答案. in vain attempt to do是什么意思啊..in vain effort to do和in the vain hope that 呢... in vain的意思及造句是? all in vain谁写的?rt 介词后能跟形容词吗?vain是形容词徒劳的.例句是这样的：Notwithstanding the disappointing results,it is our contention that the strategis were not in vain.介词后面能加形容词吗? 介词后加形容词相当于?如in+vain 求 Proof that Jesus died in vain 的翻译 All these efforts were in vain..是啥子意思? train in vain 想了好久想不明白 all my ____(努力）were in vain Against boredom the gods themselves fight in vain The person not loose are in vain few i dont wanna wait in vain for your love 什么歌? scientists tried in vain to do these experiments,翻译