Translation:Having watched this movie, he decided to become a doctor.
(Recovered comments) 1: Is there a difference between "After watching this movie he decided to become a doctor" and "Having watched this movie, he decided to become a doctor"? Thank you
2 Theron126: I spent a couple minutes trying to think of a difference without any success. Both sentences strongly imply that the movie inspired the decision and that the decision was fairly immediate after watching.
1: Ok. Now I don't already remember, it seems that Duo rejected the first option
2 Theron126: "I don't remember anymore". Both sentences were accepted, perhaps you tried "after seeing this movie", which should have been accepted but wasn't.
1: quite possible, thank you