1. If I bought a new phone, I wouldn't have any money for the next month.
2. If I didn't have any money, I couldn't go out.
3. If I couldn't go out, I'd spend more time on my studies.
4. If I spent more time on my studies, I'd get great exam results!
5. If I got great exam results, you would be very happy!
But Katie….
6. If you stayed at home every night, you would be bored.
7. If you got very bored, you would spend a lot of time on your phone.
8. If you spent a lot of time on your phone, you wouldn't have time to study.
9. If you didn't have time to study, you wouldn't pass your next exam.
10. If you didn't pass your next exam, I'd be really cross!
Учите правила Second Conditional предложений!