1. Apuntes 30-31 de octubre Los adverbios
Adverbs are words that modify verbs. Adverbs can also
modify adjectives and other adverbs. The following words
are common adverbs that you have seen and used.
aquí hoy nunca
ayer mal siempre
bien muy temprano

2. Most adverbs end in –mente, equivalent to the English suffix –ly.
positivamente positively
realmente really
normalmente normally

3. To form adverbs, add –mente to the feminine form of the adjective.
If the adjective has the same form for masculine and feminine, add
–mente to that form.
adjective feminine form suffix adverb
perfecto perfecta -mente perfectamente
verdadero verdadera -mente verdaderamente
fácil fácil -mente fácilmente

4. When a sentence contains more than one adverb, -mente
is attached only to the last adverb.
El hombre nos habló clara y lentamente.
The man spoke to us clearly and slowly.

5. Rápido can function as both an adjective and an adverb.
Tomamos un tren rápido. We’re taking a fast train.
El tren va rápido. The train goes fast.
You can also use the adverb rápidamente.
El tren va rápidamente a Madrid. The train goes quickly to Madrid.