Formal:
* J'ai une envie: This literally translates to "I have a desire," but it's the most common and formal way to express craving.
* Example: J'ai une envie de chocolat. (I am craving chocolate.)
* J'ai un besoin: This means "I have a need." It's less common than "envie" but can be used for stronger cravings.
* Example: J'ai un besoin de pizza. (I am craving pizza.)
Informal:
* J'ai envie de... This is the same as the formal version but less formal.
* Example: J'ai envie de frites. (I am craving fries.)
* J'ai une fringale: This is a slang expression that means "I have a hunger pang" and implies a strong craving.
* Example: J'ai une fringale de gâteau. (I am craving cake.)
You can also use "j'ai la bouche en eau" (my mouth is watering) to express that you are craving something.
Remember to use the correct definite article ("le", "la", "l'") before the noun you are craving, as in English.