`1,` If he hadn't been tired, he could have scored some goals.

`2,` If they hadn't made a lote of preparations, the Olympic Games wouldn't have been a great success.

`3,` If you had taken the trip last week, you would have seen a lot of beautiful sights.

`4,` If the buses weren't full up, they would stop.

`5,` If she had taken your advice, she wouldn't have crossed the streets against the red lights.

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`+` Cấu trúc câu điều kiện loại 2 diễn tả sự việc không có thật ở hiện tại:

If + S + V(past), S + would/could/might/... + V(inf)

`+` Cấu trúc câu điều kiện loại 3 diễn tả sự việc không có thật trong quá khứ:

If + S + had + Vp3/ed, S + would/could/might/... + have + Vp3/ed