You will be told by grammarians that tense and voice are different as are mood and aspect.
This post was edited by Malizz at January 28, 2018 7:19 AM MST
Active: somebody does something Passive: something is done - (by whom may or may not be emphasized)
"Avoid using the passive voice." - active - subject: you (imperative) - verb: avoid "Use of the passive voice is to be avoided." - passive - subject: use or using (gerund) - verb: some form of to be