Matching Pairs first conditionalOnline version First conditional by Andrey Parada Gómez 1 Structure of first conditional 2 Future simple 3 Example of first conditional 4 Present simple 5 First conditional If + present simple + future simple For repeated or regular actions in the present time period. It's used to talk about things which might happen in the future. Of course, we can't know what will happen in the future, but this describes possible things, which could easily come true. If it rains, I won't go to the park. expresses a spontaneous decision, an assumption with regard to the future or an action in the future that cannot be influenced.