14. First Conditional Zero conditional If + simple present + simple present ‘ If you volunteer you don’t have to pay anything.’ Used for scientific facts and general truths
15. Type 1 if + Present simple + future simple ‘ If I pass my exams I will go with you’
16. Second conditional if + simple past + simple conditional ‘ If I were you, I would stay in Málaga and study’ Used for things which don’t or won’t happen. It is generally used in present for hypothetical things that may happen.