1. Get out of my house, or I call the police.
=> If you don't get out of my house, I will call the police.
2. We always ate in that restaurant whenever we visited our grandparents.
=> If we hadn't visited our grandparents, we would not have eaten in that restaurant.
3. This area was hit by three successive storms; therefore, the damages are horrible now.
=> If this area hadn't been hit by three successive storms, the damages would be horrible now.
4. You do the washing, and I'll cook lunch.
=> If I didn't do the washing, I would cook lunch.
5. I didn't hear anything about their plan, so I couldn't give any of my comments.
=> If I had hear something about their plan, I could have given my comments.
6. I usually drink a glass of milk before bed, so I sleep very well.
=> If I didn't drink a glass of milk before bed, I would sleep very well.
7. The industrialization will demolish our earth. We need to stop it.
=> If we didn't stop industrialization, it will demolish our earth.
8. The Browns isn't very rich. They couldn't buy even a house last year.
=> If the Browns was rich, they could have bought even a house last year.
9. Thanks for giving us the directions to the building, otherwise we couldn't have found it.
=> If you hadn't given us the directions to the building, we couldn't have found it.
10. I don't know about the film, otherwise I will tell you about it.
=> If I knew about the film, I would have tell you about it.
11. Our traffic condition is terrible, so our traveling is very difficult.
=> If our traffic condition was not terrible, our traveling would be very difficult.