First Conditional.

First Conditional.

1. The first conditional refers to situations that we consider very probable. Instead, the second conditional is used to talk about things that we don't really think are going to happen or that we consider very unlikely.

   • In first conditional sentences, the structure is usually: if/when + present simple >> will + infinitive. It is also common to use this structure with unless, as long as, as soon as or in case instead of if. I'll leave as soon as the babysitter arrives.
     • As in all conditionals, we have a phrase that expresses the condition or condition clause (preceded by if) and a phrase that expresses the result or result clause. The conditional clause is formed with if + present simple and the result clause with will + infinitive.
       • Will + infinitive + if + present simple: I will make dinner for you if you come tonight.
       • If + present simple + will + infinitive: If you come tonight I will make dinner for you.
       • If he tells the truth, they will forgive him.
         • If we are not there when they arrive, they can wait at the pub.
           • If you find a mistake, I will correct it.
             • If you need money I will lend it to you.
               • If you train you will have a better performance.