`1.` You forgot your umbrella; therefore, that's why you got wet. `->`But for _________________________________________________________ . `2.` Oh my! Why didn't I insist on his staying at home? He wouldn't be in hospital now if I did. `->`I should ________________________________________________________ . `3.` My father wishes he had seen the rugby match, but he didn't have time. `->`My father would have __________________________________________ .

1. But for forgetting your umbrella, you wouldn't have gotten wet.

2. I should have insisted on his staying at home to prevent him from being in the hospital now.

3. My father would have liked to see the rugby match, but he didn't have time.

Công thức : 

Câu điều kiện loại 1:
- If + S + V (present simple), S + will + V (infinitive)
- Ví dụ: If it rains, I will stay at home. (Nếu trời mưa, tôi sẽ ở nhà.)

Câu điều kiện loại 2:
- If + S + V (past simple), S + would + V (infinitive)
- Ví dụ: If I had more money, I would buy a new car. (Nếu tôi có nhiều tiền hơn, tôi sẽ mua một chiếc xe mới.)

Câu điều kiện loại 3:
- If + S + had + V3 (past perfect), S + would + have + V3 (past participle)
- Ví dụ: If I had studied harder, I would have passed the exam. (Nếu tôi học chăm chỉ hơn, tôi đã qua kỳ thi.)

Những câu trên chỉ sử dụng Đk 3 . 

@Thaonguyen0309 

`1.` But for forgetting your umbrella, you wouldn't have got wet.

`->` ĐK`3`: But for + Ving/N, S + would/could/should + have P2.

`->` Nếu không phải vì quên chiếc ô, bạn sẽ không bị ướt.

`2.` I should have insisted on his staying at home, he wouldn't be in hospital now.

`->` Should + have P2 : Đáng lẽ nên làm gì trong quá khứ

`->` Lẽ ra tôi nên khăng khăng bắt anh ấy ở nhà, anh ấy sẽ không nằm viện bây giờ.

`3.` My father would have seen the rugby match if he had had time.

`->` ĐK`3`: If + S + had + P2, S + would/could/should + have P2.

`->` Cha tôi sẽ xem trận đấu bóng bầu dục nếu ông có thời gian.