6. She was made do chores by her step-mother all day.

→ câu bị động thì QKĐ dạng khẳng định: S + was/were (not) + V3/ed + (by+O) + time

7. Was he seen come down the lane?

→ câu bị động thì QKĐ dạng nghi vấn: Was/Were (not) + + S + V3/ed + (by+O) + time?

8. It's years since I last enjoyed myshelf so much.

→ S + have/ has + not + V3/ed + for + khoảng thời gian: Ai đó không làm gì trong bao lâu

= It’s + khoảng thời gian + since + S + last + V2/ed.

$6$. She was made do chores all day by her step-mother

`->` Câu bị động thì QKD: S + was/were + Ved/3 + by O

$7$. Was he seen come down the lane by anybody?

`->` Câu bị động thì QKD: S + was/were + Ved/3 + by O

$8$. It’s years since I enjoyed myself so much.

`->` since + mênh đề ( thì QKD )