=>
1. We asked Jack if his parents still lived in the Philippines then.
2. The teacher asked Hoa if she was interested in English.
3. I asked Betty where she bought that hat.
Câu tường thuật dạng Yes/No questions : asked sb if S V(lùi thì)
Câu tường thuật dạng WH-questions : asked sb + từ để hỏi + S V(lùi thì)
Lùi thì trong câu tường thuật
HTĐ -> QKĐ