1. Harry ate six shrimp at dinner. (= ACTIVE)
Six shrimp were eaten by Harry at dinner.
2. Beautiful giraffes roam the savannah. (= ACTIVE)
The savannah is roamed by beautiful giraffes.
3. The critic wrote a scathing review. (= ACTIVE)
A scathing review was written by the critic.
4. The whole suburb was destroyed by the forest fire. (= PASSIVE)
The forest fire destroyed the whole suburb.
5. The kangaroo carried her baby in her pouch. (= ACTIVE)
The baby was carried in her pouch by the kangaroo.