1. Football used to be played in the street by the children
2. She wasn't invited to the party
3. The passive was taught us at school by him
4. Interesting stories were told to the children by the old man
5. Football is being played in the yard by the boys
6. Employment is said that is in the most important thing to the youth today
QKĐ: S + was/ were + PP + (by O)
HTĐ: S + am/ is/ are + PP + (by O)
HTTD: S + am/ is/ are + being + PP + (by O)
HTHT: S + have/ has + been + PP+ (by O)
TLĐ: S + will be + PP + (by O)
TLG: S + is/ am/ are + going to + be + PP + (by O)
S + modal verb + be + PP + (by O)