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"I do" is a form of "I do", a phrase which is often translated as "hago". "But" is a conjunction which is often translated as "pero". Learn more about the difference between "but" and "I do" below.
but(
buht
)
A conjunction is a word that connects words, phrases, clauses, or sentences (e.g., The cat and the dog slept.).
conjunction
a. pero
I want to go, but it's really far.Quiero ir pero es muy lejos.
b. sino
He wasn't from New York, but from New Jersey.No era de Nueva York, sino de Nueva Jersey.
a. pero
But it is still too early to go to bed!¡Pero si aún es muy temprano para acostarse!
An adverb is a word that describes a verb, an adjective, or other adverbs (e.g., to run quickly, very tired).
adverb
a. no ser más que
She is but a poor philosopher.No es más que una pobre filósofa.
A preposition is a word that indicates the relationship between a noun and another word (e.g., He ran through the door.).
preposition
a. salvo
I have read all his books but the last one.He leído todos sus libros salvo el último.
A noun is a word referring to a person, animal, place, thing, feeling, or idea (e.g., man, dog, house).
noun
a. pero
I don't want any buts or excuses.No quiero ni peros ni excusas.
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I do(
ay
 
du
)
A phrase is a group of words commonly used together (e.g., once upon a time).
phrase
a. hago
My mom lets me stay out all night with my friends when I do my chores.Mi mamá permite que pase toda la noche fuera con mis amigos cuando hago los quehaceres.
a. sí, quiero
Do you promise to comfort him in sickness and in health? - I do.¿Promete consolarlo en la salud y en la enfermedad? - Sí, quiero.
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