passive voice

	Active	Passive
Simple Present	S + do/does + not + V1	S + to be (am, are, is) + not + V3 + by + O
Simple Past	S + did + not + V1	S + to be (was, were) + not + V3 + by + O
Simple future	S + will + not + V1 + O	S + will + not + be + V3 + by + O
Present countinous	S + to be (am, are, is) +  not + V1-ing	S + to be (am, are, is) + not + being + V3 + by + O
Past countinous	S + to be (was, were) + not + V1-ing + O	S + to be (was, were) + not + being + V3 + by + O
Future continous	S + will + not + be + V1-ing + O	S + will + not + be + being + V3 + by + O
Present perfect	S + have/has + not + V3 + O	S + have/has + not + been + V3 + by + O
Past perfect	S + had + not + V3 + O	S + had + not + been + V3 + by + O
Future perfect	S + will + not + have + V3 + O	S + will + not + have + been + V3 + by + O

1.Simple present

Active : She waters this plant every two days.
Passive : This plant is watered by her every two days.

2. Simple past

Active : He met them yesterday
Passive : They were met by him yesterday

3.Simple future
Active : He will meet them tomorrow.
Passive : They will be met by him tomorrow.

4.Preset countinous
Active : She is watering this plant now.
Passive : This plant is being watered by her now.

5.Past countinous
Active : She was watering this plant.
Passive : This plant was being watered by her.

6. Future continous
Active : He would be meeting them.
Passive : They would be being met by him.

7. Present perfect
Active : He has met them
Passive : They have been met by him

8. Past perfect
Active : She had watered this plant for 5 minutes when I got here
Passive : This plant had been watered by her for 5 minutes when I got here

9. Future perfect
Active : He will have met them before I get there tomorrow.
Passive : They will have been met by him before I get there tomorrow.