"Sein" is commonly used in the present tense and the past tense. This conjugation chart shows how to conjugate the verb in the present and the past tense.Wann treffen wir uns? – When do we meet? There are two categories of the German subjunctive: Konjunktiv 1 and Konjunktiv 2. Learn about the German verb haben, meaning "to have", in the present and imperfect tense. Article 12 provides no greater protections with respect to the admissibility of hearsay than does the confrontation clause. Learn German modal verbs to express what would could, should, would, must, and can be done. Add deeper meaning to your German conversations. Rule 25(a) deals with the substitution of the proper parties in the event of the death of any party.