aim at 和be aimed at 区别,非谓语用法

aim at 是主动,表打算、准备.
be aimed at 是被动,表被打算.
非谓语做放在句首如果后面的主语与动词是主动关系,用aiming at.例：Aiming at improving his grades,his parents sent him to the school.这里父母作为主语,是主动状态,想要送他去学校来提高成绩.父母（主语）和打算（谓语动词）之间是主动关系.
如果主语和谓语动词是被动关系,就用be aimed at.例：The picture,aimed at show off their love, was put in the dining room.这张被用来炫耀他们的甜蜜的照片被摆在了餐厅里.
主要是看主语与谓语动词的主被动关系来选择~

也就是 瞄准与被瞄准的 区别

就是一个主动aim at
一个被动 be aimed at
The punch was aimed at his opponent's head.
那一拳是冲著对手的头打去的。
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。
The subjuct is ai...