At the C1/C2 level, the challenge is not just knowing a word, but knowing when to use it. This textbook explicitly highlights differences between standard French ( courant ), formal French ( soutenu ), and colloquial expressions ( familier ). 2. Contextual Learning
: Abstract topics like "L'Espace" (space/environment), body and soul, and virtual worlds.
This is arguably better than a simple "PDF verified" because the platform verifies your answers in real-time.