Passive voice made easy

PASSIVE VOICE:

We use the passive when we are more interested in the action itself than in the person who did it.

Just follow these tips:

ACTIVE:  The postman delivered the post
                   
                The photographer was taking a photo

 PASSIVE:  The post was delivered by the postman

                  
    The photo was being taken by the photographer


1. Active subject becomes agent preceeded by the preposition by
2. Direct object becomes  passive subject
3. Auxiliary Be is used  in the same tense as the main verb
4. Main verb always in past participle

Have a look at all the changes in passive  you'll understand how tenses change much better.
Once you have read the chart you can practice passives here, thanks to Caroline and Pearson Brown.


Now, go through this excellent glog by Englishtips. Play the games, watch the explanations, do the exercises. After doing everything, you'll be able to do any kind of passive sentence.