PASSIVE VOICE:
Rule: “to be” in the given tense+the past participle of the given verb 
Mohammed eats an apple every day.An apple is eaten by Mohammed every day.She reads a lot of books every month. A lot of books are read every month. Certain verbs need two objects, so we can construct two passive sentences: They give me a report once a week. I am given a report once a week.A report is given to me once a week.
: جدول توضيحي لأهم الأفعال محولة إلى المبني للمجهول
Tense/verb form
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Active voice
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Passive voice
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Simple present
Present continuous
Simple past
Past continuous
Present perfect
Past perfect
Present infinitive
Modal auxiliaries
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Keep/keeps
Is/are keeping
Kept
Was/were keeping
Has/have kept
Had kept
To keep
Modal auxiliary+infinitive
Will keep
Would keep
Should keep etc.
|
am/is/are kept
Is/are being kept
Was/were kept
Was/were being kept
Has/have been kept
Had been kept
To be kept
Modal auxiliary+be+past participle
Will be kept
Would be kept
Should be kept etc…
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Examples:
We keep the butter here.
The butter is kept here.
She writes the reports every night.
The reports are written every night.
They broke the window.
The window was broken.
They broke the windows.
The windows were broken.
People have seen a wolf in the streets.
A wolf has been seen in the streets.
They are repairing the bridge.
The bridge is being repaired.
They had already done their homework.
Their homework had already been done.
They were carrying the injured player off the field.
The injured player was being carried off the field.
You must shut these doors.
These doors must be shut.
He wants someone to take photographs.
He wants photographs to be taken.