Sagot :
1/my uncle bought a new car last month.
2/the birds have eaten all the grains.
3/emma sold all the the tickets for the concert.
4/my sister keeps a secret diary.
voix passive se forme avec "to be" conjugué au temps de la voix active + part passé du verbe/
le COD devient sujet et le sujet s'introduit par by
1/my uncle bought a new car last month.
bought = preterit donc to be va être conjugué aussi au preterit
last month a new car was bought by my uncle
2/the birds have eaten all the grains.
al the grains have been eaten by the birds
3/emma sold all the the tickets for the concert.
all the tickes were sold by Emma for the concert
et a secret diary is kept by my sister
