被动语态主动变为被动一.They will sing an English song at the party.An E

一.They will sing an English song at the party.
An English song will be sung by them at the party.
二.We often eat moon cakes on Mid-Autumn Festival.
Moon cakes are often eaten by us on Mid-Autumn Festival.
三.The students water the flowers every day.
The flowers are watered by the students every day.
四.They will plant some more trees in a few years.
Some more trees will be planted by them in a few years.
五.The worker built this factory in 1987.
This factory was built by the worker in 1987.

1 will be song
2 moon cake is often be eaten (by us)
3 the flowers are watered by the students
4 will be planted by them
5 was built by

1.will be sung
2.Moon cakes are often be eaten (by us)
3.Flowers are watered by
4.will be planted (by them)
5.was built by