1. His car is washed everyday
2. Computers are used so often in schools today.
3. Stamps are sold in the post office.
4. Garbage bins are emptied every day.
5. Rice is exported to many countries in the world.
6. Many street accidents are cause of bad weather.
7. Butter and cheese is made from milk.
8. Classroom is swept by the students every day.
9. Paper is made from wood.
10. Oil is imported from other Asian countries.
`text{→}` Những câu trên đều được viết dưới dạng câu bị động ở thì hiện tại đơn. Ta có công thức như sau :
S + be + VPII + (by O)