Passive Voice

1. Passive with Simple Present

Subject + is/are + past participle.

is <- is used with singuler words.

• The door is opened.
• The door is not opened.

are <- is used with plural words.

• The doors are opened.
• The doors are not opened.

more examples :

We set the table -> The table is set by use.

"We" thired person singular 

is + past participle.

They don't help you. -> You are not helped by them.

"you" is second person and a negative sentence.

are+ not + past participle.

Does the police office catched the thief -> Is theif caught by the police officer.

"thief" is thired person singuler and sentence is negative.

is + subject + past participle.

2. Passive with Simple Past

Subject + was/were + past participle.

was <- is used with singuler words.
e.g. :

• The cat was fed.
• The cat was not fed.

were <- is used with plural words.
e.g. :

• The cats were fed.
• The cats were not fed.

more examples.

3. Passive with Present Perfect

Subject + have/has + been + past participle.

has <- is used with singuler words.
e.g. :

• The door has been closed.
• The door has not been closed.

have <- is used with plural words.
e.g. :

• The doors have been closed.
• The doors have not been closed.

4. Passive with Future I

Subject + will+ be + past participle.

e.g. :

The car will be brought.