Convert this into Present tense forms.. He had decided to climb Mount Erebus, an active volcano alone. Share with your friends Share 0 Nitesh Yadav answered this He has decide to climb Mount Erebus,an active volcano alone. 0 View Full Answer Krishnan Unni answered this He is deciding to climb Mount Erebus , an active volcano, alone. 0 Josh Stark answered this Simple Present> He decided to climb Mount Erebus alone, an active volcano alone.Present Perfect> He is deciding to climb Mount Erebus, an active volcano alnoe.Present Continuous> He has decided to climb Mount Erebus, an active volcano alone.Present Perfect Continuous> He has been deciding to climb Mount Erebus, an active volcano alone.Cheers all the best! 1