Dạng 1: Passive voice • Simple present ( hiện tại đơn) S + Vs/es + O + AP + AT  S + is /am/ are V3/ed ...+AP + (by O) + AT 1. People play the violin with a bow.  The violin..................................................................... 2. Nam collects water from the river.  Water ............................................................................. 3. Factories in the town pollute the air.  The air............................................................................. 4. Farmers play Sao truc in the evening.  Sao truc.............................................................................. 5. People reuse plastic bottles many times.  Plastic bottles.....................................................................