the search proved difficult ,这句话是怎么回事?difficult不是形容词吗?为什么可以这

the search proved difficult ,这句话是怎么回事?difficult不是形容词吗?为什么可以这 The search proved difficult.这句话为什么不用被动语态 the search proved difficult ,to mention imaginary ,为什么形容词dif The search proved difficult,为什么不是The search was proved diffi 新概念英语上一句The search proved difficult.这句话翻译是“搜寻工作很难”,但是prove后直 The search proved difficult和The search proved to be difficul 关于prove的问题The search proved difficult.的意思为什么是“事实上搜寻很困难”prove The operation proved to be very difficult这句中的prove是什么意思?它和Th Predicting the future can be difficult.这句话的开头的动词为什么要动名词形式? The car is difficult to repair.请问 形容词后的不定式是怎么回事?都主动表被动吗 The job proved to be much more difficult than I________ the operation proved to be very difficult.it proved to be __