Breakdown of In questo trimestre si sono registrate molte vendite.
essere
to be
questo
this (masculine)
molto
a lot of / much
in
in / made of (material)
Questions & Answers about In questo trimestre si sono registrate molte vendite.
Why do we use sono instead of hanno here, since recording sales normally takes the auxiliary avere?
This sentence uses the si passivante (passive "si"). A strict rule of the si passivante is that in compound tenses like the passato prossimo, it always uses the auxiliary verb essere, even if the active form of the verb usually takes avere.
Why does the past participle end in -e (registrate)?
In the si passivante construction, the thing being acted upon becomes the grammatical subject. Here, the subject is molte vendite (many sales), which is feminine plural. Because we are using the auxiliary essere, the past participle must agree with this feminine plural subject, making it registrate.
Why is the subject (molte vendite) placed after the verb?
Could I just use the regular passive and say sono state registrate?