1.→ If we had asked for direction earlier, we would reach Sally’s house now.

2.→ If he weren’t an only child, his parents wouldn’t have spoiled him.

3.→ If Bob had learned Chinese in high school, he would have many job opportunities.

4.→ If I were rich, I would have bought that house last month.

1. If we had asked for direction earlier, we would reach Sally’s house now.

2. If he weren’t an only child, his parents wouldn’t have spoiled him.

3. If Bob had learned Chinese in high school, he would have many job opportunities.

4. If I were rich, I would have bought that house last month.

Cấu trúc dùng ở câu 1 và câu 3

Vế 1:Giả sự một sự việc diễn ra theo một chiều hướng khác trong quá khứ

Vế 2:Kết quả khác với kết quả  ở hiện tại

⇒ If + S + had + V_3, S + would + V

Cấu trúc dùng ở câu 2 và câu 4

Vế 1:Một sự việc Không diễn ra trong quá khứ 

Vế 2:Một kết quả trong hiện tại nếu sự việc trong quá khứ xảy ra

⇒ If + S + V_2, S + would have + V_3