1. - If the film hadn't been so boring, I wouldn't have fell asleep.
Unless the film had been so boring, I wouldn't have fell asleep.
2. - Unless he had cut these young trees, he wouldn't have been punished.
- If he hadn't cut these young trees, he wouldn't have been punished.
3. Unless she works harder, she will lose the job.
4. - If my boyfriend had given me the address, I could have met him.
- Unless my boyfriend had given me the address, I couldn't have met him.
5. Why hasn't the car been locked?
6. If we had had enough time, we could have visited the museum.