Chuyển sang bị động : 1. The Greens will paint their house for Christmas Day 2. Ann is writing an essay in the classroom at the moment

1. The Greens are going to paint this house and these cars for Christmas Day.
           S               V                                         O                                  M
=> This house and these cars are going to be painted for Christmas Day by the Greens

2. Ann had fed the cats before she went to the cinema.

     S        V            O                           M

=> The cats had been fed by Ann before she went to the cinema.

`1.` Their house will be painted  their house by the Greens for Christmas Day

`=>` Câu bị động thì Tương lai đơn

`=>` Cấu trúc: S + will be + V3/-ed + by + O

`2.` There are being written an essay by Ann at the moment

`=>` at the moment là `DHNB` thì hiện tại tiếp diễn

`=>` Câu bị động thì hiện tại tiếp diễn

`=>` Cấu trúc: S + am/is/are + being + V3/-ed + by + O