1. I don't have a computer, so I don't play computer games.

      If I don't have a computer, then I don't play computer games.

2. Ben has to get up early on Mondays, so he doesn't go out on Sunday evenings.

       If Ben has to get up early on Mondays, then he doesn't go out on Sunday evenings.

3. I have a lot of homework, so I'll stay in this evening.

       If I have a lot of homework, then I'll stay in this evening.

4. We don't have to help with the cooking, so we can watch a DVD.

       If we don't have to help with the cooking, then we can watch a DVD.

5. There isn't a football match on TV this evening, so they're going out.

       If there isn't a football match on TV this evening, then they're going out.

6. Jane doesn't have a ticket for the concert, so she isn't going.

       If Jane doesn't have a ticket for the concert, then she isn't going.

7. I don't drive too close to the animals on safari. They don't get scared.

       If I don't drive too close to the animals on safari, then they don't get scared.

8. Tom doesn't have a passport. He can't travel abroad.

       If Tom doesn't have a passport, then he can't travel abroad.

9. There are so many tourists visiting the national parks. The environment there is badly damaged.

      If there are so many tourists visiting the national parks, then the environment there is badly damaged

10. Tourists throw litter in the river. The water is polluted.

      If tourists throw litter in the river, then the water is polluted.

`1`. If I had a computer, I would play computer games.

`2`. If Ben didn't get up early on Mondays, he would go out on Sunday evenings.

`3`. If I didn't have a lot of homework, I wouldn't stay in this evening.

`4`. If we had to help with the cooking, we couldn't watch a DVD

`5`. If there was a football match on TV this evening, they wouldn't go out.

`6`. If Jane had a ticket for the concert, she would go.

`7`. If I drove too close to the animals on safari, they would get scared.

`8`. If Tom had a passport, he could travel abroad.

`9`. If there weren't so many tourists visiting the national parks, the environment there wouldn't be badly damaged.

`10`. If tourists didn't throw litter in the river, the water wouldn't be polluted.

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`@` Câu điều kiện loại `2`:

`-` If + S + V2/ed ~ (Were) adj/O, S + would/could/might + V-bare

`-` If + S + didn't + V-bare, S + would/could/might + V-bare

`=>` Hành động không có thật ở hiện tại.