Using the wrong preposition
1. 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 donate 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).
2. Angry with, not against.
Don’t say: The teacher was 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.
