learn the rule: of / off

  • of is a preposition
    • It is used to express a relationship between two or more entities
      • The skin of my potato is brown
      • Don't take a photo of me, I'm really ugly.
  • Have is a verb meaning to be in possession of, or own
    • It is transitive, meaning it requires a direct object, i.e., have something
      • Do you have my potato?
      • I don't have your sock
    • Of and have are commonly confused in the following context:
      • I should of gone home
        • Correct: I should have gone home.
      • I shouldn't of got this wrong
        • Correct: I shouldn't have got this wrong.
  • Getting it wrong makes you look stupid. And really ugly.