human
How do you know when to use the active voice and when to use the passive voice?
assistant
The key is whether the subject of the sentence is performing the action. If it’s not, then you should use the passive voice. For example, if I say “I was eaten by a lion,” that’s using the passive voice because I wasn’t the one who did the eating. However, if I say “I am being eaten by a lion,” then I’m using the active voice because I’m the one doing the eating.