* of: "The book of the author" - "Le livre de l'auteur"
* from: "I'm from France" - "Je suis de France"
* some: "I want some water" - "Je veux de l'eau"
* to: "I go to the store" - "Je vais au magasin" (Note: "au" is a contraction of "à le" or "à la")
* by: "The book was written by the author" - "Le livre a été écrit par l'auteur"
* in: "I'm in the kitchen" - "Je suis dans la cuisine"
* on: "I'm on the sofa" - "Je suis sur le canapé"
* with: "I am with my friend" - "Je suis avec mon ami"
To accurately translate "de," you need to consider the surrounding words and the context of the sentence.