Present indicative becomes present subjunctive after a primary tense ( present, future, future perfect of primary perfect ), but it becomes imperfect subjunctive after a secondary one ( ie . after a tense of the past : imperfect, secondary perfect, pluperfect, and occasionally historic present)
2.
Nevertheless, the use of present subjunctive after a primary tense and imperfect subjunctive after a secondary tense is also strongly attested, especially when the future reference is obvious from contextual parameters and in the case of a passive verb ( passives luck the periphrastic conjugation-urus sim etc . ).
मोबाइल