Formal:
* Un apprenant rapide: This is the most literal and formal translation, emphasizing the speed of learning.
* Un élève doué: This translates to "a gifted student" and implies natural talent for learning.
* Un élève à l'esprit vif: This translates to "a student with a sharp mind" and suggests quick understanding and adaptability.
Informal:
* Quelqu'un qui apprend vite: This is a more informal way to say "someone who learns quickly."
* Un élève brillant: This translates to "a brilliant student" and emphasizes intellectual ability.
* Quelqu'un qui a la bosse des langues: This translates to "someone who has a knack for languages" and implies a natural aptitude for language learning.
The best way to choose the right phrase depends on the specific situation and the level of formality you need.