1 She said me if she were me, she wouldn't buy the coat.

2 She said if she had any money, she would buy a drink.

3 He said if he caught the plane, I would be home by five.

4. My mother said to me that I should stay in bed if I felt unwell 

→ Trong câu tường thuật dạng câu điều kiện, nếu là câu điều kiện loại 1 thì ta lùi thì, ngôi và trạng ngữ.  Còn câu ĐK loại 2 và 3 thì ta chỉ lùi ngôi và trạng ngữ, không lùi thì.

* Một số thì của động từ lùi thì:

- HTĐ → QKĐ

- HTTD → QKTD

- HTHT → QKHT

- HTHTTD → QKHTTD

- QKĐ → QKHT 

- QKTD → QKHTTD

- is/am/are going to → was/were going to

- will/ động từ khuyết thiếu → would/ động từ khuyết thiếu + be

* Cách biến đổi trạng từ chỉ thời gian và nơi chốn:

- today → that day

- tonight → that night

- tomorrow → the next day/the following day

- yesterday → the day before/ the previous day/ the period day

- ago → before

- now → then

- this → that

- these → those

- here → there .

1. "IfI were you, I wouldn't buy that coat," she said.

-She said (that) if she were me, she wouldn’t buy that coat.

2. "If I had any money, I'd buy you a drink," she said to me.

-She told me if she had had some money, she would have bought me a drink

3. "If I catch the plane, l'll be home by five," he said.

- He said if ​he caught the plane, he would be home by five

4. "You should stay in bed if you feel unwell," my mother said.

-My'mother said (that) if I felt unwell, I should stay in bed

 S1 + said... +(that) +if+ S2 + V(lùi thì), ...........