• Passive Voice: Be and By

• 
• A form of the verb be is always used in passive voice.

  -be in present tense = am, is, are

  -be in past tense = was, were

  
  

  subject + be + past participle
  

  -The keys are taken.

  -The boxes were packed.

  
  

  Add a by phrase* to show who completed the action.

  -The keys are taken by the tenant.

  -The boxes were packed by the movers.
•  Click on the play button to hear the audio

• I am told about a house for sale by my friend.	I was told about a house for sale by my friend.
  We are told about an apartment to rent by my sister.	We were told about an apartment to rent by my sister.

• *Remember! Some passive sentences do not have a by phrase to show who/what completes the action.

Source : Alison