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QUICK ANSWER
"Quién es tu mejor amigo" is a form of "quién es tu mejor amigo", a phrase which is often translated as "who's your best friend". "A" is a preposition which is often translated as "to". Learn more about the difference between "quién es tu mejor amigo" and "a" below.
quién es tu mejor amigo(
kyehn
ehs
too
meh
-
hohr
ah
-
mee
-
goh
)A phrase is a group of words commonly used together (e.g., once upon a time).
1. (informal) (general)
A word or phrase used to refer to the second person informal “tú” by their conjugation or implied context (e.g., How are you?).
a. who's your best friend
Si alguien te pregunta quién es tu mejor amigo, espero que digas que soy yo.If somebody asks you who's your best friend, I hope you say it's me.
a, la a(
ah
)A preposition is a word that indicates the relationship between a noun and another word (e.g., He ran through the door.).
a. no direct translation
This refers to an idiomatic word or phrase for which there is no word-for-word translation.
Podía respirar a duras penas.He was hardly able to breathe.
a. no direct translation
This refers to an idiomatic word or phrase for which there is no word-for-word translation.
¡A fregar los platos!Go do the dishes!
¡A la cama!Off to bed!
a. no direct translation
This refers to an idiomatic word or phrase for which there is no word-for-word translation.
Me encantaría ganar dinero a espuertas.I would love to earn lots of money.
Llovía a cántaros.It was pouring.
A feminine noun is almost always used with feminine articles and adjectives (e.g., la mujer bonita, la luna llena).
An abbreviation is the shortened form of a word or group of words (e.g., "UFO" = "unidentified flying object"; "p." = "page").
a. A
El circuito transporta una corriente de 1 A.The circuit carries a current of 1 A.
La intensidad de la corriente eléctrica se mide en A.The intensity of an electric current is measured in A.
