`16`. Daisy asked Dick if he left that place the next day.

- Câu tường thuật với Yes/No-questions : S + asked/ wanted to know/ wondered/... + (O) + if/whether + S + V (lùi thì)

- Đổi ngôi : you `->` he

- Lùi thì : Hiện tại đơn `->` Quá khứ đơn $(+)$ S + Ved/ V2

- This `->` that

- Trạng từ : tomorrow `->` the next day/ the following day

`17`. Mary asked Peter if he had gone to the cinema with his girlfriend the week before.

- Đổi ngôi : you `->` he

- Lùi thì : Quá khứ đơn `->` Quá khứ hoàn thành $(+)$ S + ahd + Vpp

- Tính từ sở hữu : your `->` his

- Trạng từ : last week `->` the week before/ the previous week

`18`. She asked if they were going to stay at home that night.

- Lùi thì : Tương lai gần `->` was/ were + going to V

- this `->` that

`19`. Richard asked Mary if she could swim.

- Đổi ngôi : you `->` she

- Lùi thì : can `->` could

`20`. I asked her if her father took her to school every day.

- Tính từ sở hữu : your `->` her

- Lùi thì : Hiện tại đơn `->` Quá khứ đơn

- Tân ngữ : you `->` her

`-` Tường thuật NV ( Yes / No ) :

`=>` S + asked + O + if / whether + S + V ( lùi thì )

`-` HTĐ `->` QKĐ : S + Ved / V2

`-` QKĐ `->` QKHT : S + had + VpII

`-` TLG `->` TLQKG : S + was / were + going to do sth

`-` Can `->` Could

`16`.Daisy asked Dick if he left that place the following day

`17`.Mary asked Peter if he had gone to the cinema with your girlfriend the previous week

`18`.She asked whether they were going to stay at home that night

`19`.Richard asked Mary whether she could swim

`20`.I asked her if her father took her to school everyday

`\text{# TF}`