`1.` Many doctors say that teenagers undergo many physical and mental changes during their puberty.

`2.` Sometimes my mother tells me that I don't have to be so tense.

`3.` Peter said he was looking forward to his grandfather's gift.

`-` Lùi thì: HTTD `->` QKTD

`4.` Peter said if he passed that test, his father would buy him a new skateboard.

`-` Lùi thì: HTĐ `->` QKĐ `|` will `->` would

`5.` I told my teacher that I had forgotten to do my homework.

`-` Lùi thì: QKĐ `->` QKHT

`6.` Jim said that Mr. Brown owned two cars and three houses.

`-` Lùi thì: HTĐ `->` QKĐ

`7.` She said to me that she couldn't do it by herself.

`-` Lùi thì: can `->` could

`8.` My mother said that she would go on a business trip the following week.

`-` Lùi thì: will `->` would

`-` ĐTCTG: next week `->` the following week

`----------`

`@`Câu tường thuật:
`-` Kể: S + told sb/said/said to sb + (that) + S + V (lùi thì)

Câu tường thuật - dạng câu kể 

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

S + said + (that) + S + V (lùi thì)

---------------------------------------------------------------------

S + say(s) / tell(s) + that + S+ V (k lùi thì)

---------------------------------------------------------------------

HTTD --> QKTD 

If 1 --> If 2

this --> that 

QKD --> QKHT

HTD --> QKD 

can --> could 

will --> would 

next week --> the next week / the following week 

---------------------------------------------------------------------

1. Many doctors say that teenagers undergo many physical and mental changes during their puberty.

2. Sometimes my mother tells me that I don't have to be so tense.

3. Peter said that he was looking forward to his grandfather's gift.

4. Peter said that if he passed that test, his fatehr would buy him a new skateboard.

5. I told my teacher that I had forgotten to do my homework.

6. Jim said that Mr. Brown owned two cars and three houses.

7. She told me that she couldn't do it by herself.

8. My mother said that she would go on a business trip the next week.

`color{orange}{~LeAiFuRuiHuiBao~}`