(+)
1. If I were you, I would come to the party;
2. I will cook for you when you arrive home;
3. If you hurried up, we would not be late;
4. When I get up earlier, I feel sleepy;
5. If somebody makes her happy, she will go with us.
(-)
1. If I did not do my homework, I would get a bad marks;
2. When Tom doesn't know what we are taking about, he looks very unpleasant.
3. If they didn't receive the email, we would have the problems.
4. If there is no rain, we will leave your house;
5. If Lora did not use to be interested in the mathematical sciences, she would be a great artist.