`21,` He told Jack that he would phone him the following day. 

- Lùi thì : will -> would

- Đổi ngôi : I -> he , you -> him

- Lùi trạng từ : tomorrow -> the following day

`22,` He said that he wanted a camera for his birthday.

- Lùi thì : HTĐ -> QKĐ

- Đổi ngôi : I -> he , my -> his

`23,` George said to Mary that he had seen the film three times.

- Lùi thì : HTHT -> QKHT

- Đổi ngôi : I -> he

`24,` Helen told me that she was working the late-night show then.

- Lùi thì : HTTD -> QKTD

- Đổi ngôi : I -> she

- Lùi trạng từ : now -> then

`25,` Mr.Cooper said that he took my medicine regularly.

- Lùi thì : HTĐ -> QKĐ

- Đổi ngôi : I -> he 

`@` Câu tường thuật dạng câu kể : S + said (to O)/told O + (that) + S + V(lùi thì) + O 

`***` Câu tường thuật với statements:

S + said (to sb) that/told (sb) that + S + V (lùi thì)

`---------`

`21.` He told Jack that he would phone him the following day.

`-` Lùi thì: will `->` would

`-` Đổi ngôi: I `->` he, you `->` him

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

`22.` He said that he wanted a camera for his birthday.

`-` Lùi thì: HTĐ `->` QKĐ

`-` Đổi ngôi: I `->` he, my `->` his

`23.` George said to Mary that he had seen the film three times.

`-` Lùi thì: HTHT `->` QKHT

`-` Đổi ngôi: I `->` he

`24.` Helen told me that she was watching the late-night show then.

`-` Lùi thì: HTTD `->` QKTD

`-` Đổi ngôi: I `->` she

`-` Trạng từ: now `->` then

`25.` Mr. Cooper said that he took his medicine regularly.

`-` Lùi thì: HTĐ `->` QKĐ

`-` Đổi ngôi: I `->` he, my `->` his