Unite 12. Across the generations:

First Conditional: 

  We use the First Conditional to talk about future events that are likely to happen.

·      * If we take John, he'll be really pleased.

 * If you give me some money, I'll pay you back tomorrow

      

         Zero Conditional

 Is use  when we talking about things that are always true.
 In this topic is used If/When/Unless plus a present form PLUS present simple or imperative.

*If you borrow me money, I will give you more.

*If you see to medusa to her eyes. you become in rock.