Relier Pairs first conditionalVersion en ligne First conditional par Andrey Parada Gómez 1 Structure of first conditional 2 First conditional 3 Future simple 4 Example of first conditional 5 Present simple If + present simple + future simple If it rains, I won't go to the park. For repeated or regular actions in the present time period. expresses a spontaneous decision, an assumption with regard to the future or an action in the future that cannot be influenced. 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.