They have built a bridge.
What is the passive form?

- Active voice: They have built a bridge.
- Passive voice: A bridge has been built by them.

• Have/has/had + V3 যুক্ত Active voice থেকে passive voice করার নিয়ম:
- Active voice এর object টি passive voice এর subject হয়।
- Have/has/had + been হয়।
- তারপর মূল verb এর past participle হয়।
- preposition (by, with, at, to, in) বসে।
- Active voice এর subject টি passive voice এর object হয়।

• More examples:
- Active voice: The author has written a new novel.
- Passive voice: A new novel has been written by the author.