1) If it's cold outside, I drive a car.
0-rule
2) If the car doesn't work, I go by bus.
O-rule
3) If you buy a car, we will go with you.
1-real
4) If I get paid today, I will buy a car tomorrow.
1-real
5) If I were a director, I would support you.
2-imagination
6) If I did this job, I would be promoted.
2-imagination
7) If I were you I would do it again.
2-imagination
8) If he had studied well, he would have got this job.
3 - unreal past
