1. Active and Passive Voice

2. Active to Passive

3. Passive to Active

4. Active voice is used most of the time.
Direct object
Active voice is used most of the time.
Passive
:Subject
Verb with auxillary (be)
Preposition
Subject is not active, but is, instead, being acted upon by the verb - or passive
Active
Subject (from passive’s preposition)
Active verb (minus auxillary)
Direct object (passive sentence’s subject)
The subject is doing the action denoted by the verb.

5. One more example:

6. Source