Passive and Active Voice

What are they?  Why do we use them? When can we use them? 
    Click here to find out.
    Passive and Active Voice Verb Chart 1 or 2. 

Practice:

1. Passive Voice Quiz 1 (eflnet.com)
2. Passive Voice Quiz 2  (eflnet.com) 

3. Passive 1 (from eslclassroom.com

4. Passive 2 (from eslclassroom.com

5. Passive 3 (from eslclassroom.com

6. Passive 4 (from eslclassroom.com

7. Passive 5 (from eslclassroom.com

8. Passive 6 (from eslclassroom.com

9. Bill Gates' Car:  Passives (past tense/other tenses) (eslblues.com)
10. A good time to be away:  Passives (past tense) (eslblues.com)
11. Hurricane:  Past tense passives (3)  (eslblues.com)
12. Change into Passive (dog translators)  (isabelperez.com)

13. Pot Luck:  Focus: Passive verb forms in past (eslblues.com)  

14. Active or Passive Voice ( a4esl.org) 

15. Active or Passive ( a4esl.org) 

16. More at University of San Mateo here.

17. Passive Internet Grammar of English
    Passive SMIC
    Passive Monash Univ.
    Passive aprender inglés
    Passive English-Zone
    Passive eslgo.com
    Passive G. Smith
    Passive Vera Mello
    Passive Nonstop English

18. More exercises and practice here

19. And more from Longman: 

If you would like more explanation, here  is one more.