Suppose I say:
It is foolish to lick a metal pole.
Is this in the passive voice?
Would this sentence be better as:
To lick a metal pole is foolish.
How about:
Licking a metal pole is foolish.
Suppose I say:
It is foolish to lick a metal pole.
Is this in the passive voice?
Would this sentence be better as:
To lick a metal pole is foolish.
How about:
Licking a metal pole is foolish.
The passive is very simple. You take the forms of to be + as special complement the past participle.
Active: The soldiers destroyed the bridge.
Passive: The bridge was destroyed (by the soldiers).
The passive conjugation is (I give only the forms of the third person singular):
is destroyed, was destroyed, will be destroyed, would be destroyed.
has been destroyed, had been destroyed, will have been destroyed, would have been destroyed.
You can form continuous forms by using "being" before the past participle:
The bridge was being destroyed (when we arrived).