Ya tenía varios años de estar trabajando experimentalmente en transplantes cerebrales.
Ya | tenía | varios | años | de | estar | trabajando | experimentalmente | en | transplantes | cerebrales | |||||||||||||||||||
Already | had.1SG/3SG | several | years | of | be | working | experimentally | in |
'I/(S)he had already been working on brain transplants for several years.'
(NGLE: §26.13m)