To talk about situations which are likely to happen in the future and their probable results or consequences:

- If we don´t leave now, we will miss the train.

​Probability

If the weather is nice tomorrow, there will be a lot of people on the beach.

​To Make Prediction

 If you pass the exam, I´ll buy you a motor bike.

​​It is also used to Make PROMISES

​If you don´t take more care, You´ll have an accident.

​​To Make WARNINGS

For Example

​Es de mañana, estás en tu casa, tu planeas jugar fútbol en la tarde, pero hay algunas nubes que oscurecen el cielo, imaginas que va a llover. Qué harias?

CONDITION + RESULT

If it rains, I will stay at home.

​Structure

El Primer Condicional se compone de dos clausulas que son:

"IF CLAUSE", "FUTURE/MAIN CLAUSE"

"if clause" = CONDITION

"future/main clause" = RESULT

If I study, I will get a good grade

"if clause" , "future/main clause"

CONDITION , RESULT