SUBJECT + USED TO + V (infinitive)
My mother used to be a teacher. Now she is retired.
SUBJECT + DIDN´T USE TO + V (infinitive)
We didn´t use to take the bus, but now we do.
DID + SUBJECT+ USE TO + V (infinitive)?
Did they use to bring the homework?
My mother used to be a teacher. Now she is retired.
SUBJECT + DIDN´T USE TO + V (infinitive)
We didn´t use to take the bus, but now we do.
DID + SUBJECT+ USE TO + V (infinitive)?
Did they use to bring the homework?
