In Lesson 23 we take a further look at the imperfect tense, this time looking at the formation of -re and -ir verbs. We also consider some verbs with slightly different patterns and the only verb with an irregular stem in the imperfect tense: être. Please note that lesson 23 of Season 2 was originally known as lesson 63 of Coffee Break French. We have renumbered the lessons of each season as lessons 1-40 to make things more simple for our listeners.