PRES.PERF.SIMP:he comido/he.She.It(has)i have eaten-havent-have you eaten? PAS.PERF.SIMP:habia estudiado/i had studied-hadnt-had you studied? FUT.PER.SIM:habre perdido/i will have lost-won’t-wiil you have lost? PRES.PERF.CONT: he estado durmiendò / i have been sleeping-i haven’t been sleeping-have you been sleeping? PAS.PERF.CONT: habia estado estudiando/ i had been.ing-hadn’t been.Ing-had ou been.Ing? FUT,PERF.CON:habré estado estudiando/ i will have been –ing-i will haven’t ben.Ing-will you have been-ing?