Ex 1:
1. She asked me how I knew that.
2. He wanted to know what the time was.
3. She asked me when they would meet agian.
4. He wanted to know where they had lived.
5. The teacher wanted to know who knew the answer.
6. She wanted to know why he didn't help her.
7. She asked me where my sister was.
8. She asked him where he had spent his money.
9. He wondered why I hadn't phone him.
10. She asked me where I had spent my holiday the year before.
→ S + asked + (O)/wanted to know/ wonderered+ wh/h + S + V(lùi thì): câu gián tiếp dạng wh/h question
* Các cách biến đổi động từ lùi thì:
+ hiện tại đơn/ tiếp diễn/ hoàn thành → quá khứ đơn/ tiếp diễn/ hoàn thành
+ quá khứ đơn → quá khứ hoàn thành
+ quá khứ tiếp diễn → quá khứ hoàn thành tiếp diễn
+ quá khứ hoàn thành → quá khứ hoàn thành
+ will/can/shall/may/must .. + V0 → would/could/should/might/ had to .. + V0
+ is/am/are going to + V0 → was/ were going to + V0
Ex 2:
1. He asked if he had to do it.
2. He wanted to know if I was going to cinema.
3. My friend asked me if Caron had talked to Kevin.
4. He asked her if she would be at the party.
5. She asked me if I could met her at the station.
6. He asked me if I had seen that car.
7. The mother asked the twins if they had tidied up their room.
8. He wanted to know if she knew Robert.
→ S +asked + (O)/ wanted to know/ wondered + if/wheter + S + V(lùi thì): câu gián tiếp dạng yes/no question