Matching Pairs first conditionalOnline version First conditional by Andrey Parada Gómez 1 Future simple 2 Example of first conditional 3 Present simple 4 First conditional 5 Structure of first conditional 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. For repeated or regular actions in the present time period. If + present simple + future simple If it rains, I won't go to the park.