1. Henrik Salum
PASSIVE VOICE

2. Doctors cure patients.
Patients are cured by doctors

3. Tom opens the door.
The door is opened by Tom.
Tom is opening the door.
The door is being opened by Tom.
Tom has opened the door.
The door has been opened by Tom.

4. Tom opened the door.
The door was opened by Tom.
Tom was opening the door.
The door was being opened by Tom.
Tom had opened the door.
The door had been opened by Tom.

5. Tom will open the door.
The door will be opened by Tom.
Tom is going to open the door.
The door is going to be opened by Tom.
Tom will have opened the door.
The door will have been opened by Tom.

6. Tom can/could/would/should/may/ might/must/has to open the door.
The door can/could/would/should/ may/might/must/has to be opened by Tom.

7. Passive voice is formed:
BE + Past Participle