passive voice
1.My father waters this flower every morning
➝My father watered that flower every morning
2.John invited Fiona to his birthday party last night
➝john had invited fiona to his birthday party the night before
3.Her mother is preparing the dinner in the kitchen
➝Her mother was preparing the dinner in the kitchen
passive voice
1.My father waters this flower every morning
➝ This flower is watered (by my father) every morning.
2.John invited Fiona to his birthday party last night
➝Fiona was invented to John’s birthday party last month.
3.Her mother is preparing the dinner in the kitchen
➝ The dinner is being prepared (by her mother) in the kitchen.