Everything there is to know about the subjunctive mood in French. This is a verb tense (well, it's actually not technically a tense... ) which poses lots of difficulties for English speakers learning French since it doesn't really translate directly. My students in Senior French classes (Immersion and FSL) found this package really helpful. It has rules for formation, spots for writing in the various irregular forms and a guide to which expressions and circumstances will require a subjunctive in French, plus places for them to practice forming sentences. For example did you know that some expressions will need a subjunctive in the negative or the interrogative, but not in the affirmative? I've used this set of notes for years to make clear a form that can otherwise be baffling.