Câu hỏi Yes/No — dùng if hoặc whether
S + asked (+ O) + if/whether + S + V (đã lùi thì)
- "Do you like coffee?" he asked. → He asked if I liked coffee.
- "Are you ready?" she asked me. → She asked me whether I was ready.
if và whether thay thế nhau được, nghĩa như nhau.