22. “Is your father working in the factory now?” Hoa said to Nam.

A. Hoa asked Nam if his father were working in the factory now.

B. Hoa asked Nam if his father is working in the factory now.

C. Hoa asked Nam if his father has been working in the factory now.

D. Hoa asked Nam if his father was working in the factory then.

⇒Lùi thì: Thì hiện tiện tiếp diễn→Quá khứ tiếp diễn

⇒Chuyển đổi sở hữu: Your←His

⇒Chuyển đổi thời gian: Now→Then

22. “Is your father working in the factory now?” Hoa said to Nam.

A. Hoa asked Nam if his father were working in the factory now.

B. Hoa asked Nam if his father is working in the factory now.

C. Hoa asked Nam if his father has been working in the factory now.

D. Hoa asked Nam if his father was working in the factory then.

Câu thường thuật của dạng câu hỏi Yes/No

Cấu trúc: S + asked + (O) + if/whether + S + V

- Vì câu hỏi ở thì hiện tiếp diễn tại nên phải lùi về thì quá khứ tiếp diễn.

- "your father" → "his father"

- "now" → "then"

@Bulletproof