How do you identify passive sentences?

Related questions

1. What's wrong with passive voice?
2. Is this sentence passive voice?
3. What is passive voice in writing?
4. What is passive voice definition?
5. How do you correct passive voice?
6. How can you tell if a sentence is active or passive?
7. What is the formula of passive voice?
8. What makes a sentence passive?
9. How do you tell if a sentence is active or passive?
10. What are passive words?

Tags

1. #subject
2. #voice
3. #therefore
4. #zombies
5. #after
6. #active
7. #action
8. #passive
9. #location
10. #makes
11. #basically
12. #sentence
13. #doing
14. #sense
15. #probably