English Grammar | The Passive Voice | Main use:
It is used to put the emphasis on the person or the thing which is affected by an action. It is used
in sentences where the object of the action is
more important than the people who perform the action.
Syntax: Subject + BE (tense of the active sentence) + Past participle
Important: If you need to tell who is doing the action, use BY
America was discovered by Christopher Columbus in 1492.
Examples:
Present (be+ing):
Peter is eating an apple.
>An apple is being eaten by Peter.
Present Simple:
They make shoes in this factory.
>Shoes are made in this factory.
Preterite:
They built this bridge in the 13th century.
>This bridge was built in the 13th century.
and so on...
http://learngrammar.blogspot.com/
It is used to put the emphasis on the person or the thing which is affected by an action. It is used
in sentences where the object of the action is
more important than the people who perform the action.
Syntax: Subject + BE (tense of the active sentence) + Past participle
Important: If you need to tell who is doing the action, use BY
America was discovered by Christopher Columbus in 1492.
Examples:
Present (be+ing):
Peter is eating an apple.
>An apple is being eaten by Peter.
Present Simple:
They make shoes in this factory.
>Shoes are made in this factory.
Preterite:
They built this bridge in the 13th century.
>This bridge was built in the 13th century.
and so on...
http://learngrammar.blogspot.com/
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