hadn't visited

- Lùi thì : Quá Khứ Đơn -> Quá Khứ Hoàn Thành 

`1,` the girls had helped with the housework.

`2,` they hadn't enjoyed the show.

- Đổi ngôi : we -> they 

`3,` he hadn't had time to chat.

- Đổi ngôi : I -> he 

`4,` they had scored 6 goals in the match.

- Đổi ngôi : we -> they  

`5,` it hadn't rained much in February.

`---------`

had been + verb -ing 

- Lùi thì : Quá Khứ Tiếp Diễn -> Quá Khứ Hoàn Thành Tiếp Diễn 

`1,` he had been expecting the promotion.

- Đổi ngôi : I -> he 

`2,` they had been dancing at 98 o'clock.

- Đổi ngôi : we -> they 

`3,` it had been raining in the morning.

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

- Lùi thì : Hiện Tại Hoàn Thành -> Quá Khứ Hoàn Thành 

`1,` she had made a silly mistake.

- Đổi ngôi : I -> she 

`2,` they hadn't finished the project yet.

- Đổi ngôi : we -> they

`3,` the rain had killed some animals.

`4,` their son had graduated from college.

- Đổi ngôi : our -> their

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

`@` Quy tắc : lùi thì , lùi trạng từ , đổi ngôi 

`I.`

hadn't visited

`1.` Alice told me the girls had helped with the housework.

`2.` My friends said they hadn't enjoyed the show.

`3.` Albert told his friend he hadn't had time to chat.

`4.` Messi told reporters they had scored 6 goals in the match.

`5.` A farmer declared it hadn't rained much in February.

`II.`

had

`1.` Peter told us he had been expecting the promotion.

`2.` My sisters said they had been dancing at 98 o'clock.

`3.` Dad told us it had been raining in the morning.

`III.`

`2.` They said they hadn't finished the project yet.

`=>` Câu tường thuật: Câu kể: S + said/ said to sb/ told sb + (that) + S + V(lùi thì)

`->` Lùi thì của động từ: 

`-` QKĐ `->` QKHT

`-` QKTD `->` QKHTTD

`-` HTHT `->` QKHT