没想到这样的问题会引起如此反响，看些例句吧： 1.The people that are doing illegal things in other countries - like begging - are already there. There won't be many to join th...

 

 

  一、概念 主动语态表示主语为动作的执行者；被动语态表示主语为动作的承受者。现在完成时的被动语态强调过去的动作对现在造成的影响或结果，但主语为动作的承受者，表示“……已经被……...

 

Focus Student Book 1 Focus Student Book 3 Focus Student Book 4