`1,` If I had known their address in Rio de Janeiro, I would have visited them.

`2,` If they had practiced more, they would have played better in the match last week.

`3,` What would you do if you lost your passport?

`4,` If Richard had set the alarm clock, he wouldn't have been late for work.

`5,` If the wind hadn't been so strong, the bridge wouldn't have collapsed.

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${\text{Giải thích: }}$

`-` Câu đk loại `3` : If `+` S `+` had `+` V3.., S `+` would `+` have `+` V3….

`+` Tưởng tượng kết quả của một tình huống không có thật trong quá khứ.

`1`. If I had known their address in Rio de Janeiro, I would have visited them.

`2`. If they had pracised more, they would have played better in the match last week.

`3`. What would you have done if you had lost your passport?

`4`. Richard would have been late for work if the alarm clock net had gone off.

`5`. The wind hadn't been so strong, the bridge wouldn't have been collapsed.

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`***` Câu điều kiện loại `3`:

`-` Không có thật trong quá khứ

`-` If + S + had + V-pII, S + would have + V-pII