In Spanish, unlike adjectives, adverbs do not change according to the gender or number of any other word, and this is due to the fact that adverbs only modify verbs, adjectives and other adverbs, but never nouns.
- They usually come after the verb they modify: Ella corre rápido (She runs fast)
- Placing before the adjective and adverb they modify usually applies:
Eres muy inteligente (You are very smart)
Caminamos demasiado lento (We walk too slow)
- There are several types of adverbs, but the three more commonly used are adverbs of place, time and manner.