`1.` They wanted to know What the story was about.

`-` lùi thì: HTĐ `->` QKĐ

`2.` He said (that) he would leave there the following day

`-` will `->` would

`-` here `->` there

`-` tomorrow `->` the following day

`3.` Jack said that we lived in a small town in England

`-` lùi thì: HTĐ `->` QKĐ

`4.` Ma said: " she is reading a book about animals now"

`-` lùi thì: HTTD `-` QKTD

`-` now `-` then

`5.` While we were on the way to school, we met some foreigners

`-` While + QKTD, QKĐ

`->` Diễn tả hành động đang xảy ra thì có hành động khác xen vào

`6.` Hai asked Hoa How often she visited her grandparents

`-` lùi thì: HTĐ `->` QKĐ

`7.` She asked me What a UFO looked like.

`-` lùi thì: HTĐ `->` QKĐ

`8.` The student asked his teacher that why the climate on Mars was unsuitable for human life

`9.` I wondered which longer was, a day on Venus or a day on Earth

`10.` My son asked me Why people called Mars the Red Planet

`_______________________`

`***` Câu gián tiếp:

`@` S + said + (that) + S + V(lùi thì)

`@` S + said to + O + (That) + S + V(lùi thì)

`@` Dạng Wh_question:
S + asked / wondered/wanted to know + (O) + Wh_ + S + V(lùi thì)

`1`, what the story was about.

- Hiện tại đơn -> Quá khứ đơn

`2`, she would leave there the next day.

- Tương lai đơn -> would

- here -> there

- tomorrow -> the next day/ the following day

`3`, they lived in a small town in England.

- Hiện tại đơn -> Quá khứ đơn

`4`, I am reading a book about animals now.

- Quá khứ tiếp diễn <-> Hiện tại tiếp diễn

- then <-> now

`5`, going to school, we met some foreigners.

- While : trong khi

- Hành động đang diễn ra chia thì QKTD, hành động xen vào chia QKĐ

`6`, how often she visited her grandparents.

- Hiện tại đơn -> Quá khứ đơn

`7`, what a UFO looked like.

- Hiện tại đơn -> Quá khứ đơn

`8` why the climate on Mars was unsuitable for human life.

- Hiện tại đơn -> Quá khứ đơn

`9`, which was longer, a day on Venus or a day on Earth

- Hiện tại đơn -> Quá khứ đơn

`10`, why people called Mars the Red Planet.

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

Câu tường thuật với Wh-question : S + asked + (O)/ wondered/ wanted to know/... + Wh-word + S + V (lùi thì)