Aim at ,be aimed at的区别

一个意思后面的是前面的被动语态吗错了 就是一个被动 一个主动The punch was aimed at his opponent's head.那一拳是冲著对手的头打去的。We must aim at increasing/to increase exports.我们要力求增加出口货物。You should always aim at doing your job well.你永远应该以搞好你的工作为目的。Aim at one bird, don't blaze into the brown.瞄准一只鸟打，不要向整个鸟群开枪。比如说，the subjuct is aimed at students.这个科目是针对于学生的，也不是被动啊被针对于学生的 但是学生是主语 subject是宾语