`33`. Hung asked Ba if his parents made him study hard for the exam.

`->` Câu trần thuật yes, no: S + asked + O + if + S2 + V lùi thì

`34`. This house was built 10 years ago.

`->` Câu bị động quá khứ đơn: S + was/were + Vpp

`35`. My father has taught English in this school since 1997.

`->` S + started + Ving/to V + in + mốc thời gian `=` S + have/has + Vpp + since + mốc thời gian

`36`. If I knew something about the story, I could tell you how it ends.

`->` If 2: If + S1 + V2/ed, S2 + would/could + Vinf

Câu 33

=> Hung asked Ba if his parents made him study hard for the exam

Câu gián tiếp: S+ask(chia)+O+if+S+V lùi thì+O

Câu 34 

=> This house was built 10 years ago

Câu bị động thì QKĐ: S+was/were+p2+(by Os)+trạng từ chỉ thời gian

Câu 35

=> My father has taught English in this school since 1997

Cấu trúc : S+started+Ving+O+in+năm trong QK=S+have/has+p2+O+sin+năm trong QK

Câu 36

If I knew something about the story,I could tell you how it ends

(Câu điều kiện loại 2 : If+QKĐ+S+would/could+V)