Using The Wrong Preposition

Accustomed to ,not with

Don't say: I'm accustomed with hot weather

Say: I'm accustomed to hot weather

NOTE; Also used to: He is used to the heat

Afraid of, not from

Don't say: Sara is afraid from the dog

Say; Sara is afraid of the dog

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)G