Bonjour,
Réponse :
2. It’s the most difficult subject I've ever studied.
3. I've always enjoyed studying.
4. I've done a lot of exams in my life.
5. I've never written an essay
6. I've done several part-time courses.
7. She’s the best teacher I’ve ever had.
8. I‘ve never failed an exam.
Explications :
Il faut utiliser le present perfect ( have/has + participe passé )
Toutes les phrases sont à la première personne:
== > I have + participe passé
( I've ) +participe passé
Attention : les adverbes de fréquence se placent entre l'auxiliaire et le participe passé.
;)
