Breakdown of Foi o pai quem tirou o telemóvel sem eles refilarem.
ser
to be
quem
who
eles
they (m)
o pai
the father / the parents
Questions & Answers about Foi o pai quem tirou o telemóvel sem eles refilarem.
Why do we use refilarem instead of the normal infinitive refilar after sem?
The main action was done by o pai, but the second action belongs to a different subject: eles. Because the preposition sem introduces an action by a new subject, we must conjugate the infinitive to match it. That is why the base verb refilar becomes refilarem.
Could I use que instead of quem after o pai?
What is the difference between refilar and other verbs for complaining?
Since refilarem already indicates 'they', do we strictly need the word eles?
No, you could just say sem refilarem. The personal infinitive ending already tells us the subject is a plural third party. Including eles just adds a bit of emphasis or ensures absolute clarity in the moment.