Basically Spanish adverbs have the same function as in English: they modify (for example a verb or an adjective).
 
Like in the English language, we have two types of adverbs in Spanish:

1. The first type ist derrived from an adjective.
   To derive the adverb from the adjective, the general rule is to take the feminine singular form of the adjective and add “-mente” at the end.
   💡 For example:
    
   rapida (f, sg) → rapidamente (Adv.)
   Juan come rápidamente. – Juan eats fast.
    
   tranquila (f, sg) → tranquilamente
   María duerme tranquilamente. – Maria sleeps quietly.

2. The second type covers adverbs that exist on their own – and they are not derived from an adjective.
   💡 Examples for commonly used temporal adverbs in Spanish:
   pronto – soon, shortly
   ahora – now
   hoy – today
   
    
   💡 Examples for commonly used Spanish modal adverbs:
   solo – only, just
   ojalà – hopefully
   quizàs – maybe
   
    
   💡 Examples for commonly used causal adverbs in Spanish:
   por eso – therefore, hence
   es decir – namely
   
    
   💡Examples for commonly used Spanish local adverbs:
   arriba – above, up
   abajo – down, below
   a la derecha – on the right
   a la sinistra – on the left