Aim at, not on or against
Don’t say: She aimed on (or against) the target
Say: She aimed at the target
Note: Use the preposition at to denote
direction: throw at, shout at, fire at, shoot at, shoot (without the at)
means to kill: He shot a bird (=he hit and killed it).
Angry with, not against.
Don’t say: The teacher angry against him
Say: The teacher was angry with him
Note 1: We get angry with a person but at a thing: He was angry at the weather (not: with the weather).
Note 2: Also annoyed with, vexed with, indignant with a person, but at a thing