1. The boy was punished by the teacher because of his bad behavior.

- Bị động QKD: S + was / were + V3 / ed + ( by O )

- Because of + N / V - ing: Vì ...

2. She said that it was very quiet there.

- Tường thuật gián tiếp: S + said ( that ) + S + V ( lùi thì )

- HTD -> QKD

- Here -> There

3. Intelligent as he is, he can't solve this problem by himself.

- Đảo ngữ mệnh đề chỉ sự nhượng bộ: Adj / adv + as + S + tobe / V, S + V + O.

- Mệnh đề chỉ sự nhượng bộ:: Although / though / even though + S + V, S + V + O: Mặc dù ...

- Can't + V - inf: Không thể làm gì

4. I wish I had time to go around the city.

- Ước ở hiện tại: S + wish(es) + S + V2 / ed + O

-> Ước điều không có thật ở hiện tại

5. Because of the thick fog, we couldn't drive the car.

- Mệnh đề chỉ lý do:

-> Because of + N / V - ing, S + V + O: Vì ...

-> Because / Since / As + S + V, S + V + O: Vì ...

6. One friend of my son whose parents I know will visit and stay with us

- N người / vật + whose + N

-> Thay thế tính từ sở hữu.

7. He is said to own a big company.

- Bị động kép: V1 chia ở hiện tại đơn.

- S1 + V1 + that + S2 + V2

-> S2 + am / is / are + V1 ( V3 / ed )  + to + V2 ( V - inf )

8. This swimming pool is not enough clean for me to swim in

- S + be + too adj + ( for O ) + to V: Quá .. để làm gì ...

- = S + be not enough + adj + ( for O ) + to V: Không đủ để làm gì

9. He is such a busy man that he can't go out with his friends

- S + be + so adj + that + S + V

- = S + be + such + ( a / an ) + adj + N + that + S + V

-> Quá ... để mà ...