Qué otra palabra invariable que expresa circunstancias y modifica al verbo, al adjetivo o a otro adverbio conoces? Nómbra e indica sus tipos o clases. Pon un ejemplo de cada una de sus clases.

What other invariable word that expresses circumstances and modifies the verb, the adjective or another adverb do you know? It is named and indicates its types or classes. Give an example from each of their classes

Explanation:

18th century i believe it is.