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"Also" is an adverb which is often translated as "también", and "either" is a conjunction which is often translated as "o". Learn more about the difference between "also" and "either" below.
also(
al
-
so
)An adverb is a word that describes a verb, an adjective, or other adverbs (e.g., to run quickly, very tired).
1. (too)
a. también
The suspects are also believed to have attacked a second person that night.Se cree que los sospechosos también atacaron a una segunda persona aquella noche.
2. (moreover)
a. además
I should say also that I'm going to need to take a few personal days.Debería decir además que voy a necesitar tomar algunos días personales.
either(
ay
-
thuhr
)A conjunction is a word that connects words, phrases, clauses, or sentences (e.g., The cat and the dog slept.).
An adjective is a word that describes a noun (e.g., the big dog).
b. ninguno de los dos (with a negated verb)
I don't think either team will win.No creo que gane ninguno de los dos equipos.
A pronoun is a word that stands in for a noun (e.g., she).
a. cualquiera
I like both of those popsicle flavors, so I can eat either.Me gustan las paletas de ambos sabores, así que puedo comerme cualquiera.
b. ninguno (with a negated verb)
I don't like beef or chicken sandwiches. I don't want either.No me gustan los sándwiches ni de carne ni de pollo. No quiero ninguno.
An adverb is a word that describes a verb, an adjective, or other adverbs (e.g., to run quickly, very tired).
5. (as well)
a. tampoco (with a negated verb)
I don't like cockroaches either.No me gustan las cucarachas tampoco.