1. As a pronoun:
* On: This is the most common translation and is used to represent an indefinite third person, similar to "one," "people," or "we" in English.
* L'on: This is a formal or literary variation of "on" but is rarely used in modern French.
2. As a preposition:
* Sur: This means "on" or "upon" and is used to indicate a location or position.
3. As part of a phrasal verb:
* Mettre en marche: This means "to start" or "to turn on."
* Allumer: This means "to light" or "to turn on."
Examples:
* On dit que... (One says that...)
* On devrait aller au cinéma. (We should go to the cinema.)
* Le livre est sur la table. (The book is on the table.)
* J'ai allumé la lumière. (I turned on the light.)
The best way to choose the correct translation of "on" is to consider the context of the sentence.