Using The Wrong Preposition

Angry with , not against

Don't say:The teacher was angry against him

Say: The teacher was angry with him

NOTE; We get angry with a person, but At a thing,(He was angry at the weather), G

NOTE; Also annoyed with, vexed with, indignent with a person, but At a thing

Anxious(=troubled) about , not for

Don't say: They are anxious for his health

Say : They are anxious about his health

NOTE; Anxious meaning wishing very much takes for; Parents are anxious for their children's success