The passive voice is used whenever we emphasize the action (the verb) and the object of a sentence rather than subject is either less important than the action itself or that we don't know who or what the subject is.

1. All About Passive Voice Tense
We use Passive Voice Tense when we dont know about subject that who is s
ubjec to at that time we focus on object so there we takes help from passive
voice tense it has very important role in Basic English grammar and it is less
spoken in english language for more visit here all about passivevoice tense.
List of Passive voice Tense
 Present Simple Passive
 Present Continuous Passive
 Present Perfect Passive
 Past Simple Passive
 Past Continuous Passive
 Past Perfect Passive
 Future Simple Passive
 Future Perfect Passive

2. Present Simple Passive
The use of Present simple passive voice tense is to tell about universal truth,acti
ons which repeated, daily activities, habitual activities and those actions which
happens again and again same like present simple active voice tense but we
use verb 3rd form in passive voice.
Present Continuous Passive
present Continuous passive voice tense is used for running that action which i
s in process at the time of speaking. when we indicate to some one that this
work is in working and its helping verb is (Is/Am/Are + being). Here are som
e examples of present progressive passive tense.

3. Present Perfect Passive
Present perfect passive voice tense is used for those action which started in t
he past and ended in the past but connected with the present. we use has /
have as a helping verb with third form. here are some examples of present p
erfect passive voice tense.

4. Past Simple Passive
Past simple passive voice tense talks about those action which started in past
and ended in the past. we use was / were + (been) these helping verbs. and
as we know that we use verb third form in passive.

5. Past Continuous Passive
Past continuous passive voice tense is used for past running action which is in
working at the time of speaking. when we indicate to some one that this wo
rk was in working and its helping verb is (was/were + being). Here are some
examples of past progressive passive tense.

6. Past Perfect Passive
Past perfect passive voice tense is used for completed action before past sim
ple tense its helping verb is had + (been) and as we know that we use verb
3rd form in passive.

7. Future Simple Passive
Future simple passive voice tense is used for future prediction, threat, instant
decision and possibility. and its helping verb is (will be).

8. Future Perfect Passive
We use future perfect passive for those actions which will be completed in fut
ure may be its near in future and its helping verb is will have + been and al
so verb third form will be used.