`5`. Teacher asked Nam who helped him with his homework that day.

- Câu tường thuật với WH-question:

S + asked/ wanted to know/ wondered/... + (O) + WH-words + S + V (lùi thì)

( Hiện tại đơn -> Quá khứ đơn ; you -> him ; your -> his ; today -> that day)

`6`. He asked Liz to talk with her a while after she finished her work the next day.

- Câu tường thuật với câu cầu khiến: S + asked/told + O + (not) to V

( you -> her ; you -> she ; Hiện tại đơn -> Quá khứ đơn ; tomorrow -> the next day/ the following day )

`7`. Ann asked Peter when he would finish that spaceship model.

( you -> he ; will -> would ; this -> that )

`8`. The scientist said that he would be introducing his latest invention to public the following month.

- Câu tường thuật với câu trần thuật: S + said (that) + S + V (lùi thì)

- ( will -> would ; I -> he ; my -> his ; next month -> the next month/ the following month )