QUICK ANSWER
"Well" is a form of "well", an adjective which is often translated as "bien". "I do" is a form of "I do", a phrase which is often translated as "hago". Learn more about the difference between "well" and "I do" below.
well(
wehl
)An adjective is a word that describes a noun (e.g., the big dog).
An adverb is a word that describes a verb, an adjective, or other adverbs (e.g., to run quickly, very tired).
2. (properly)
4. (probably)
a. probablemente
He may well come with us to the auction.Probablemente vendrá con nosotros a la subasta.
A noun is a word referring to a person, animal, place, thing, feeling, or idea (e.g., man, dog, house).
An interjection is a short utterance that expresses emotion, hesitation, or protest (e.g., Wow!).
I do(
ay
du
)A phrase is a group of words commonly used together (e.g., once upon a time).
1. (I perform)
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.