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"Tu" is a form of "tu", an adjective which is often translated as "your". "Yo estoy bien, gracias" is a phrase which is often translated as "I'm fine, thank you". Learn more about the difference between "yo estoy bien, gracias" and "tu" below.
yo estoy bien, gracias(
yoh
 
ehs
-
toy
 
byehn
 
grah
-
syahs
)
A phrase is a group of words commonly used together (e.g., once upon a time).
phrase
a. I'm fine, thank you
¿Y tú? ¿Cómo estás? - Yo estoy bien, gracias.And you? How are you? - I'm fine, thank you.
b. I'm OK, thank you
Yo estoy bien, gracias. Pero, ¿cómo está tu hermana?I'm OK, thank you. But, how's your sister?
c. I'm all right, thank you
Yo estoy bien, gracias. Pero mi hermano todavía está asustado.I'm all right, thank you. But my brother is still scared.
d. I'm good, thank you
Yo estoy bien, gracias. Por suerte, tengo trabajo y buena salud.I'm good, thank you. Luckily, I have a job and good health.
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tu(
too
)
An adjective is a word that describes a noun (e.g., the big dog).
adjective
1.
A word or phrase used to refer to the second person informal “tú” by their conjugation or implied context (e.g., How are you?).
(informal)
(possessive)
a. your
Mi casa es tu casa.My house is your house.
Ahora es tu turno.Now it's your turn.
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