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"Certain" is an adjective which is often translated as "seguro", and "as well as" is a phrase which is often translated as "además de". Learn more about the difference between "certain" and "as well as" below.
certain(
suhr
-
tihn
)
An adjective is a word that describes a noun (e.g., the big dog).
adjective
a. seguro
What is certain is that technology will keep advancing.Lo que es seguro es que la tecnología seguirá avanzando.
a. seguro
I can't be completely certain, it's just a suspicion.No estoy completamente segura, es solo una sospecha.
a. cierto
Certain things are better left unsaid.Ciertas cosas es mejor callárselas.
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as well as(
ahz
 
wehl
 
ahz
)
A phrase is a group of words commonly used together (e.g., once upon a time).
phrase
a. además de
The restaurant serves sushi as well as Chinese food.El restaurante sirve sushi además de comida china.
b. al igual que
I love to sing as well as dance.Me encanta cantar al igual que bailar.
c. y también
She saw his most recent movie, as well as a play he had been in.Ella vio su película más reciente, y también una obra teatral en la que había actuado.
a. tan bien como
I could never play soccer as well as my brother can.Nunca pude jugar al fútbol tan bien como puede mi hermano.
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