Source: https://elearn.univ-tlemcen.dz/pluginfile.php/125583/mod_folder/content/0/Unit%C3%A9%20%286B%29%20Cours%202%20LES%20SUBORDONEES%20CIRCONSTANCIELLES%20de%20temps%2C%20de%20cause%2C%20de%20cons%C3%A9quence%2C....pdf