- Use: Indicates one impossibility
- Forme: If + Past + Conditional Would OU Conditional Would + If + Past
- Forme: If + Past + Conditional Would OU Conditional Would + If + Past
- Affirmative:
If I went to London, I would visit the Big-Ben. OU I would visit the Big-Ben If I went to London.
- Negative:
If I were you, I wouldn't eat so much fast food. OU I wouldn't eat so much fast food, If I were you.